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2,659,994
Nov. 24, 1953 M. w. YALE
SELF-LOADING SEMIAUTOMATIC PISTOL
ZSheetS-Sheet 1
Filed Feb. 3, 1950
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2,659,994
NOV. 24, 1953 M, W, YALE
SELF-LOADING SEMIAUTOMATIC PISTOL.
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Filed Feb. 3, 1950
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Patented Nov, 24, 1953
,tsaet
TENT OFFICE
2,659,994
SELF-LOADING SEMIAU'I'OMATIC PISTOL
Marion W. Yale, Salida, 0010.
Application February 3, 1950, Serial N0. 142,231
(01. 42-69)2 Claims.
i
This invention relates to a novel construction
Of self-loading semiautomatic pistol having an
enclosed action and no outside moving parts ex
cept an operating rod for rendering the piston
action dirt-proof.
Still a further object of the invention is to pro
vide a pistol of extremely simple construction
which may be very readily dismantled for clean
ing, repair or replacement of parts and which is
capable of being quickly and easily reassembled.
Still a further object of the invention is to pro
vide a pistol which may be readily constructed to
provide a well balanced weapon to afford the
maximum degree of accuracy in ?ring.
Various ‘other objects and advantages of the
invention will hereinafter become more fully ap
parent from the following description of the
drawings, illustrating a presently preferred em
bodiment thereof, and wherein:
Figure l is a side elevational view looking to
ward the right-hand side of the pistol;
Figure 2 is an enlarged longitudinal central
sectional view, partly in side elevation thereof and
showing the bolt and hammer in retracted posi
tions;
Figure 3 is a fragmentary longitudinal sectional
view showing the bolt in a forward position pre
paratory to ?ring and with the hammer in a re
tracted, cocked position;
Figure 4 is a view similar to Figure 3 but show
ing the hammer in a forward position and illus
trating the parts in their positions as the car
tridge is ?red; _
Figure 5 is an exploded perspective View of cer
tain of the operating parts of the pistol;
Figure 6 is a bottom plan View of the bolt; _
Figure 7 is an enlarged cross sectional view
taken substantially along a plane as indicated by
the line 'l—‘l of Figure 2; .
Figure 8 is an enlarged cross sectional view
taken substantially along a plane as indicated by
the line 8—8 of Figure 2; _
Figure 9 is a horizontal sectional view taken
substantially along a plane as indicated by the
line 9-9 of Figure 2, and '
Figure 10 is a fragmentary perspective View of
the upper end of a cartridge clip especially de
signed for use with the pistol.
Referring more speci?cally to the drawings, the
semiautomatic self-loading pistol in its entirety
is designated generally is and includes a frame,
designated generally [3 to the upper end of which
is secured a receiver, designated generally 14. A
barrel bushing I5 is press ?t into the forward end
of the receiver Ill and a barrel It has a restricted
threaded rear end H which is threaded into the
10
15
20
25
35
40
45
50
2
threaded bore of the bushing It. The barrel and
bushmg are connected together and to the re
ceiver by a screw Iastemng is which also forms a
part of the connection between the receiver 14
and frame l3. A cartridge ramp Is is disposed in
the receiver 54 onectiy behind the barrel and
bushing and is secured to the bushing is‘ by an
extension at of said ramp ls which hits a recess
2| 1n the bottom of the rear end or‘ the bushing
i 5 and which is secured thereto by a fastening 22A
The ramp I s is relatively short and has a concave,
longitudinally extending upper surface as best
illustrated in Figure 8. 'ihe opposite, rear end
of the receiver is is internally threaded and nor
mally closed by a removable, externally threaded
plug 24.
A bolt 25 which is generally circular, externally »
in cross section, is mounted for longitudinal slid
ing movement in the receiver it behind the bush
ing I5 and for movement toward and away from
the rear end of the bushing l5 and barrel It. A
hammer 26, which is likewise of substantially cir
cular external cross section, is also reciprocally
mounted for longitudinal movement in the re
ceiver it between the bolt 25 and plug 24. The
bolt 25 at its rear end is provided with a rear
wardly opening recess 27 and a restricted thread
ed recess 28 Which extends forwardly from the
bed of the recess 21. The hammer 28 has a bore
29 extending longitudinally and centrally there
through and which is provided with an enlarged
rearwardly opening rear end portion all. An ac
tion rod 3! extends reciprocally through a cen
tral bore 32 in the plug 24, through the bore 28
and recess 21 and has a threaded forward end 33
which threadedly engages the threaded recess 28.
The action rod 3! has a knob or head 36 at its
rear end which is disposed rearwardly of the plug
213, in the forwardmost position of said action rod,
as illustrated in Figure 1. A long action spring
35 of relatively small diameter is mounted on the
action rod 3| within the receiver 14 and has one
end thereof seated in a forwardly opening recess
36 of the plug 26 and extends forwardly there
from through the hammer bore 29 into the bolt
recess 21 and has its opposite end bearing against
the bed of the recess 21. A shorter main spring
3'! of larger diameter is disposed around the rear
portion of the action spring 35 and has its rear
end seated in the recess 36 and its forward end
seated in the hammer recess or bore enlargement
38 so that the spring 35 urges the bolt 25 toward
its forward position of Figures 3 and 4 and the .
main spring 37 urges the hammer 26 toward its
forward position of Figure 4.
As best seen in Figures 2, 3, 4 and 5, the bolt '25
W
2,659,994
3
is provided in its upper portion vwith a groove '38
which extends from end-to-end thereof and
' which has a'deep cut forward portion 39. The
forward end of the bolt 35 is provided with a
recess or depression 40 for receiving the rim or
rear end of a cartridge case. As seen in Figure 6,
the underside of the bolt 25 is provided with
spaced longitudinally extending grooves A! which
extend from intermediatejof its ends to its for
ward end and which combine to form a longi
tudinally extending rib 42 therebetween which
has'a beveled forward end 43 terminating at the
4
of the frame i3~into a longitudinally extending
recess 66 formed in the upper portion of the frame
It and which opens upwardly of its upper edge.
The upper end of the trigger 64 is pivotally
mounted at 61 on a block 68 of the frame ‘3 and
which extends into the forward portion of the
I recess 66. A spring pressed plunger 69 which is
10
bed of the pocket or depression ML The-pocket ,
or depression :18 opens downwardly into the
grooves 41 at the forward end of the rib 152'. The
underside of the bolt 25 is also providedwith a,
transversely extending depression or groove 45
which is disposed rearwardly of the longitudinal ‘
grooves 4| and which is provided’ with, rounded
forward and rear ends, as best seen in’ Figures 2,
3 and 4. As seen in Figure 5v the right-hand side
of the bolt 25 is'provided with a longitudinally
extending groove 45 which extends to its forward 1
end and laterally thereof into the recess’ GB for
receiving an extractor: 46 which is, pivotally
mounted therein, intermediate of its ends on a pin
4'! which extends vertically through an opening
48 of the bolt 25 and through an- opening 49 of
the extractor £56. The extractor 46 isv provided
with a laterally extending hook 59 at its forward
end which extends radially'inwardly of the for
ward end of the bolt 25 and into the depression
40. The opposite, left-hand side of the bolt 25
is provided with a longitudinally extending rela
tively deep groove or channel 5! for slidably re
ceiving an ejector 52 which extends laterally in—
wardly through an opening 53 in the left side of
the receiver 14, as seen in Figure 7, and which
has an upturned?ange 54 at its outer end which
engages a portion of the outer side of the re
ceiver M and which is secured thereto by a
fastening 55. The groove 51 extends from the
forward end of the bolt 25 and is of a depth so
that its bed portion opens into the depression
40 and the ejector 52 is of a length to extend to
adjacent the bed of the groove 5! so as to move
into the depression 40 as the bolt 25 approaches
its retracted position of Figure 2.
The hammer 26 is provided with a substantially
T-shaped forwardly opening recess» 56 in its upper
part and a groove 51 in the bottom part thereof
which opens outwardly of the forward end of the
hammer 26 and which terminates intermediate
of the ends of said hammer to form a forwardly
facing shoulder 58. A ?ring pin 59 is provided‘
with a T-shaped head 60 at its rear end which
?ts into the hammer recess 56 and said ?ring pin
extends forwardly therefrom in the groove 38 and
has a depending flange M at its forward end
which is reciprocally disposed in the deep cut
groove portion 39 of the bolt 25. The ?ange 6i
terminates at its forward end and bottom edge in
a forwardly extending pin portion 62 which’ pro-'-'
jects into the depression 49, in its forwardmost
position of Figure 4. It will be readily apparent
that the hammer is nonrotatably connected to
the bolt 25 by the ?ring pin 59 and the bolt 25
is prevented from turning in the receiver M by
engagement of the ejector 52 with the bolt
groove 5|. I
The frame [3 is provided in its forward portion
with an opening de?ning a trigger guard 63 in
which the lower portion of a trigger 54 is swing
ably disposed. The trigger Eel extends upwardly
from the trigger guard E3 through an opening 65
mounted in a recess 10 of the frame 13 and which
extends into the opening 65 bears against the
trigger 64 and urges it to spring forwardly within
the trigger guard 63,asil1ustrated in Figures 3
and 4. A sear bar, designated'generally ‘H, is
disposed longitudinally in the recess 66 and is
pivotally connected at its forward end at 12 tothe
trigger 64', beneath and adjacent its pivot 8'3. The
sear bar ‘H is provided near its forward end with
' an elongated clip receiving opening 13 and be
20
25
30
40
45
hind and adjacent thereto has an upstanding,
rigid disconnector pin ‘M which extends upwardly
through an opening 15 in the bottom portion of
the receiver M. The frame :3 is provided with
a hanger ‘is which extends downwardly into the
recess 66, near the rear end thereof and through
which the rear end portion of the sear bar ‘H
loosely extends. Said sear bar ‘H is provided in
its underside with longitudinallyspaced notches
11 for receiving the'ends of an arcuate, leaf-type ,
spring 18, the intermediate portion of which is
bowed downwardly to rest uponthe bottom pore
tion of the hanger ‘F6 for urging the rear end of
the sear bar ‘II upwardly. The sear bar ‘H near
its rear end is provided with a notch in its upper
side forming a ramp surface 19'.’ A sear 80 is
pivotally mounted intermediate of its ends by a
' pin 8! on the hanger 16 above the sear bar ‘H
and has an upwardly extending forward, end 132
which extends upwardly into or through an open
ing 83 in the bottom of the receiver 14. The
opposite end of the sear8? terminates in a down
turned portion 84 which normally engages the
ramp surface 19. A spring 85 which seats against
the bottom of the receiver I4 and bears on the
upper rear end portion of the sear 80 urges said
sear to rock in a counterclockwise direction on its
pivot 8! for urging the rear end portion 84 down
wardly against the ramp surface 19 and the for-
- ward sear end 82 upwardly into the receiver I4.
50
60
65
70
75
A safety 86 extends transversely through the
recess 66-, beneath the forward end of the sear
8t and has a cross bar 8'5 located beneath the
sear 8E] and a knurled head 88 located on the outer
left-hand side of the frame l3. By rotating the
catch 86 the crossbar 81 thereof will urge the
forward end of the sear 8i} upwardly and the sear
bar ‘H downwardly for locking the sear in a posi
tion for engagement with the hammer so as to
prevent ?ring of the piston [2 when the safety
catch cross bar 81 is in an upright position rather
than in a horizontal position, as illustrated in
Figures 3 and 4.
The grip portion of the frame [3 has a bore 89
of oblong cross section extending from the bot
tom thereof diagonally upwardly and forwardly
and opening into the recessv 66 and which‘ aligns
with an opening Qt in the bottom of the receiver
M. The ‘core 39' is adapted to receive a cartridge
clip 9| which is inserted therein from the lower
end of said here and which extends upwardly
through the bore 849 through the recess 66 and
opening 90 into the lower part of the receiver Hi.
The clip 91 has a portion extending loosely
through th'eclip opening 13 of the sear bar ‘H,
which opening 73 is of sufficient length to‘ allow
the clip bar 1! to reciprocate longitudinally in the
recess 66 and relatively to the clip 9l. A spring
2,659,994
5
projected latch 92 which is pivotally mounted in
a recess 93 of the frame I3 and which has a hook
portion disposed beyond the lower end of the
frame i3, is normally held in a position with its
hook portion engaging the lower end of the clip
25 for retaining the clip in an applied position,
as illustrated in Figure 2. By manually swinging
the clip latch 92 clockwise or to the left as seen
in Figure 2, the clip ?ange 94 can be engaged for
removing the clip 9| for reloading the pistol l2.
' The clip 9| differs from a conventional clip in
that the sides thereof are slit longitudinally from
its upper, open end to provide strips 95 the rear
edge portions of which are bent inwardly to pro
vide lips 96, for a purpose which will hereinafter
become apparent.
Assuming that the pistol I2 has just been
loaded with a clip 9| containing cartridges 9‘!
which are urged toward the open, upper end of
said clip by a conventional spring follower, not
shown, as is common in ?rearm clips, and fur
ther assuming that the bolt and hammer are in
forward positions, as illustrated in Figure 4, the
uppermost cartridge 9'3 will be held below the
open top of the clip 9| by engagement with the
bolt rib 42 which extends into the open top of the
clip 91. To initially load and cook the piece l2,
the knob 34 of the action rod is grasped and
pulled rearwardly to its position of Figure 2. It
will be readily apparent that the bolt 25 and
hammer 2G will be carried rearwardly therewith.
As the hammer and bolt commence their rear
ward movement the disconnector pin ‘Id will be
disposed in the hammer groove 57. As the ham
mer and bolt move rearwardly the rounded upper
end of the disconnector pin 14 will engage the
rounded rear portion 98 of the bottom of the bolt
25 which will function as a cam for initially cam
ming the disconnector pin 74 and sear bar ‘I!
downwardly. Said parts are again cammed down
wardly by the forward rounded end of the bolt
recess i313 and held in a depressed position by the
rib 42, as illustrated in Figure 2, as the bolt and
hammer reach a fully retracted position and in
which position the sear end 82 is disposed in the
bolt recess 45 and the sear end 86 is out of en
gagement with the sear bar ‘II. By then releas
ing the knob 34, the springs 35 and 31 will pro
ject the bolt 25 and hammer 26 forwardly. As
the bolt 25 moves forwardly the forward end of
its rib 42 will engage the rear or rim end of the
uppermost cartridge 91 which has been raised by
the cartridge follower into the open upper end of
the clip 9! when the rib 42 was moved rearwardly
and out of engagement with the clip 9|. There
after, said upper cartridge 91 will be carried for
wardly with the bolt 25 and during its initial
movement will be displaced upwardly by engage
ment of its rim with the inwardly curved lips 96
to thereby cause the rim of the cartridge 97 to
be displaced upwardly into the depression 40 of
the forward end of the bolt face and as the ogive
portion of the cartridge or projectile moves into
engagement with the groove 23 of the ramp I9,
which is disposed just forwardly of the forward,
upper end of the clip 9!, so that said uppermost
cartridge ill is displaced upwardly by the ramp I9
and the inturned lips 95. As the cartridge rim
portion moves upwardly into the bolt face de
pression all, a part of the rim will assume a posi
tion behind the hook 50 of the extractor. The
ramp l9 will guide the nose of the projectile into
the barrel chamber 99 so that when the bolt 25
reaches its forwardmost position, as seen in Fig
ure 3, the cartridge 91 will be chambered and the
10
15
20
30
35
40
50
55
60
65
70
6 .
inclined forward surface 43 of the rib 42 will be
in engagement with the groove 23 of the ramp 19.
During this forward movement of the bolt 25, as
previously stated, the hammer 26 will initially be
moved forwardly therewith under the biasing ac
tion of the main spring 37 but as the sear end 32
clears the rounded bolt surface 98 the sear spring
85 will rock the sear 8B counterclockwise on its
pivot 8| for projecting the sear end 52 upwardllr
through the opening 83 into the receiver I2 and
into the hammer recess 51 to engage the hammer
shoulder 58 so that the hammer 26 will be held in
a partially retracted position by the sear end 82.
Thereafter, the forward movement of the bolt 25
is accomplished by the pressure of the action
spring 35 only. As the bolt surface 98 clears the
disconnector pin ‘Ed, the spring 73 will swing the
disconnector bar ll upwardly on its pivot 72 to
its position of Figure 3. As the bolt 25 moves
forwardly relatively to the hammer 26 after the
hammer has been caught by the sear end 82, the
?ring pin 59 will slide relatively to the groove 38
in the deep portion 39 thereof so that the hammer
pin flange {5! will move from its position of Fig
ure 2 to its position of Figure 3 when the bolt has
reached its projected position and the hammer 26
is held in a cocked position. Approximately .003
inch clearance exists between the bolt face and
the barrel breach Ill and bushing i5 when the bolt
25 is in a forwardmost position as the bed of the
recess 40 holds the cartridge rim tight against the
barrel breech to provide proper head space, as
seen in Figure 3. When a rearward pull is then
exerted on the trigger 66, said trigger in swing
ing rearwardly will displace the sear bar ‘H rear
wardly from its position of Figure 3 to its position
of Figure 4. As the sear bar ‘ll moves rearwardly
the sear end 84 will ride up the sear bar ramp 79
to thereby cause the sear 86 to rock clockwise on
its pivot 8| so that the forward sear end 82 will
be drawn downwardly out of engagement with the
hammer shoulder 53 thus releasing the hammer
which is then projected forwardly by the main
spring 3'! to its position of Figure 4, in which
position the disconnector pin ‘M is disposed in the
hammer recess 51. The ?ring pin 59 likewise
moves forwardly with the hammer 26 and rela
tively to the bolt groove 38, 39 so that as the ham
mer approaches its fully projected position of
Figure 4 the pin portion 62 will strike and deto
nate the primer of the cartridge 9? for ?ring the
piece. The recoil of the powder charge of the
cartridge 91 will force the bolt and hammer rear
wardly to their positions of Figure 2, as previously
described heretofore in reference to the initial
loading of the piece and which therefore need not
be again described in detail. However, as the bolt
25 is propelled rearwardly by the recoil from the
powder charge, the cartridge case mil will be ex
tracted from the chamber 99 by the extractor
hook 50 and carried rearwardly with the bolt 25
until a portion of the rim of the cartridge case
I!!!) strikes the stationary ejector 52 which is slid
ably engaged by the bolt groove 51 and which will
“kick” the cartridge case I08 laterally of the re
ceiver l4 and outwardly through the ejector open
ing lill in the right-hand side of said receiver id.
As the bolt moves rearwardly it engages the dis
connector pin 14 to depress the sear bar ‘H, as
previously described, so that the sear bar ‘(I is
held in its position of Figure 2 until the bolt and
hammer have returned to their positions of Fig
ure 3. Accordingly, the trigger 64 must be allowed
to move forwardly under the action of the spring
pressed plunger 69 before the spring 78 can return
aged-994
7.
the rear end. of the sear bar ‘II: to its position‘- of
Figure 3 and, from which the sear 801 can. be again
rocked out‘ of engagement with the hammer
shoulder 58', thus preventing the piece H from‘- re
?ring automatically under the action of the spring
31. As previously stated, the safety catch‘ 86’ cari
be revolved 90° from its position of Figures 3 and
4 to lock the sear end 82 in a raised position to
prevent ?ring of the piece. The sides of theframe
13 are covered and closed by suitable check stocks
I02 which are detachably secured to the sides of
the frame I3. 7
By unscrewing the plug 24, the bolt, hammer,
action rod, action spring and main spring may be
removed as a unit for cleaning thus providing a
weapon which may be readily assembled and dis-*
assembled, and by removing the receiver 14 from
the frame it the remainder of the parts, c'on->
tained within the recess 6% will be exposed. When
the piece i2 is constructed for ?ring large caliber
ammunition a suitable bolt look, not shown, may
be provided for locking the bolt in its forward-I
most position until after the cartridge has been
?red.
Various modi?cations and changes are con
templated and may obviously be resorted to, with
out departing from the spirit or scope of the in->
vention as hereinafter de?ned by the appended
claims.
I claim as my invention:
1. In a clip fed semiautomatic ?rearm, a re‘
ceiver having an open rear end, a plug detach‘
ably connected to and closing the rear end of the
receiver, a bolt slidab-ly mounted for longitudinal
movement in the receiver, a hammer mounted
for sliding movement‘ in the receiver between the
bolt and plug, said bolt and hammer being re
movable from the receiver through its open rear
end when the plug is disconnected. therefrom, an
action rod detachably connected at its forward
end to said bolt and extending rearwardly there~
from loosely through the hammer and plug and
having an exposed rear end located rearwardly of
the plug and adapted to be manually engaged‘ for
retracting the bolt and hammer, spring means
10
15
20
35
40
45
mounted on the action rod and disposed within
the receiver including springs individual to the
bolt‘ and hammer for urging the bolt and ham
mer forwardly of the receiver toward the breach,
and a ?ring pin detachably connected to the ham~
mer and slidably engaging the bolt, said bolt,
hammer, spring means and ?ring pin being re->
movable as a unit with the action rod through
the rear end of the receiver when the plug is dis
engaged therefrom.
2. In a ?rearm, a receiver having an open rear
end, a closure detachably connected to the rear
end of the receiver, a bolt slidably mounted in the
receiver, a hammer slidably mounted in the re
ceiver between the bolt and closure, an action rod
extending slidably through the closure and ham
mer and having a forward end detachably s'e
cured, in the’ bolt, spring means mounted on the
action rod and disposed in the receiver and in
dividual to the bolt and hammer for urging the
bolt- andv hammer forwardly of the receiver and
away from the closure, and a ?ring pin detachably
connected to the hammer for sliding movement
therewith and having a forward portion slidably
engaging in and guided by the bolt, said closure,
action rod, bolt, hammer, ?ring pin and spring
means being removable from the receiver as a
unit through its open rear end when the closure
is detached from the receiver, said hammer being
adapted to be released from a retracted cocked
position. by a sear for sliding movement away
from the closure and toward the bolt.
MARION W. YALE.
References Cited in the ?le of this patent
UNITED STATES PATENTS
Number Name Date
“ 909,398“ Gobel ____________ __ Jan. 12, 1909
1,083,872 Berthier ____________ Jan. 6, 1914
1,460,672 Hines _______________ July 3, 1923
1,571,592 Loomis ____________ __ Feb. 2, 1926
2,049,776 Hyde _____________ __ Aug. 4:, 1936
2,296,242 Brewer ____________ Sept, 22, 1942
2,464,427 Wilson ____________ Mar. 15, 1949

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内圆击锤

  • 1. 2,659,994 Nov. 24, 1953 M. w. YALE SELF-LOADING SEMIAUTOMATIC PISTOL ZSheetS-Sheet 1 Filed Feb. 3, 1950 E7971. 4/ 7?; 4g 46 a a ‘E’. #9596! H7 I? / a 79 34 ‘7/32 E .90 7.7 I 42 4a 40 65 64 ‘as’ 8. Im 1 Mar Allorm’y
  • 2. 2,659,994 NOV. 24, 1953 M, W, YALE SELF-LOADING SEMIAUTOMATIC PISTOL. Sheets-Sheet ') L. Filed Feb. 3, 1950 Z4 53 _ wm“ T #1”mm 9W sm;x a7 I:I)”MM 6,7.,4“f//H./1 I.,r m wa W-a”w.9,9 L_ wa.‘ “1|; fl'févrz'on M Evie Allnrncy
  • 3. Patented Nov, 24, 1953 ,tsaet TENT OFFICE 2,659,994 SELF-LOADING SEMIAU'I'OMATIC PISTOL Marion W. Yale, Salida, 0010. Application February 3, 1950, Serial N0. 142,231 (01. 42-69)2 Claims. i This invention relates to a novel construction Of self-loading semiautomatic pistol having an enclosed action and no outside moving parts ex cept an operating rod for rendering the piston action dirt-proof. Still a further object of the invention is to pro vide a pistol of extremely simple construction which may be very readily dismantled for clean ing, repair or replacement of parts and which is capable of being quickly and easily reassembled. Still a further object of the invention is to pro vide a pistol which may be readily constructed to provide a well balanced weapon to afford the maximum degree of accuracy in ?ring. Various ‘other objects and advantages of the invention will hereinafter become more fully ap parent from the following description of the drawings, illustrating a presently preferred em bodiment thereof, and wherein: Figure l is a side elevational view looking to ward the right-hand side of the pistol; Figure 2 is an enlarged longitudinal central sectional view, partly in side elevation thereof and showing the bolt and hammer in retracted posi tions; Figure 3 is a fragmentary longitudinal sectional view showing the bolt in a forward position pre paratory to ?ring and with the hammer in a re tracted, cocked position; Figure 4 is a view similar to Figure 3 but show ing the hammer in a forward position and illus trating the parts in their positions as the car tridge is ?red; _ Figure 5 is an exploded perspective View of cer tain of the operating parts of the pistol; Figure 6 is a bottom plan View of the bolt; _ Figure 7 is an enlarged cross sectional view taken substantially along a plane as indicated by the line 'l—‘l of Figure 2; . Figure 8 is an enlarged cross sectional view taken substantially along a plane as indicated by the line 8—8 of Figure 2; _ Figure 9 is a horizontal sectional view taken substantially along a plane as indicated by the line 9-9 of Figure 2, and ' Figure 10 is a fragmentary perspective View of the upper end of a cartridge clip especially de signed for use with the pistol. Referring more speci?cally to the drawings, the semiautomatic self-loading pistol in its entirety is designated generally is and includes a frame, designated generally [3 to the upper end of which is secured a receiver, designated generally 14. A barrel bushing I5 is press ?t into the forward end of the receiver Ill and a barrel It has a restricted threaded rear end H which is threaded into the 10 15 20 25 35 40 45 50 2 threaded bore of the bushing It. The barrel and bushmg are connected together and to the re ceiver by a screw Iastemng is which also forms a part of the connection between the receiver 14 and frame l3. A cartridge ramp Is is disposed in the receiver 54 onectiy behind the barrel and bushing and is secured to the bushing is‘ by an extension at of said ramp ls which hits a recess 2| 1n the bottom of the rear end or‘ the bushing i 5 and which is secured thereto by a fastening 22A The ramp I s is relatively short and has a concave, longitudinally extending upper surface as best illustrated in Figure 8. 'ihe opposite, rear end of the receiver is is internally threaded and nor mally closed by a removable, externally threaded plug 24. A bolt 25 which is generally circular, externally » in cross section, is mounted for longitudinal slid ing movement in the receiver it behind the bush ing I5 and for movement toward and away from the rear end of the bushing l5 and barrel It. A hammer 26, which is likewise of substantially cir cular external cross section, is also reciprocally mounted for longitudinal movement in the re ceiver it between the bolt 25 and plug 24. The bolt 25 at its rear end is provided with a rear wardly opening recess 27 and a restricted thread ed recess 28 Which extends forwardly from the bed of the recess 21. The hammer 28 has a bore 29 extending longitudinally and centrally there through and which is provided with an enlarged rearwardly opening rear end portion all. An ac tion rod 3! extends reciprocally through a cen tral bore 32 in the plug 24, through the bore 28 and recess 21 and has a threaded forward end 33 which threadedly engages the threaded recess 28. The action rod 3! has a knob or head 36 at its rear end which is disposed rearwardly of the plug 213, in the forwardmost position of said action rod, as illustrated in Figure 1. A long action spring 35 of relatively small diameter is mounted on the action rod 3| within the receiver 14 and has one end thereof seated in a forwardly opening recess 36 of the plug 26 and extends forwardly there from through the hammer bore 29 into the bolt recess 21 and has its opposite end bearing against the bed of the recess 21. A shorter main spring 3'! of larger diameter is disposed around the rear portion of the action spring 35 and has its rear end seated in the recess 36 and its forward end seated in the hammer recess or bore enlargement 38 so that the spring 35 urges the bolt 25 toward its forward position of Figures 3 and 4 and the . main spring 37 urges the hammer 26 toward its forward position of Figure 4. As best seen in Figures 2, 3, 4 and 5, the bolt '25 W
  • 4. 2,659,994 3 is provided in its upper portion vwith a groove '38 which extends from end-to-end thereof and ' which has a'deep cut forward portion 39. The forward end of the bolt 35 is provided with a recess or depression 40 for receiving the rim or rear end of a cartridge case. As seen in Figure 6, the underside of the bolt 25 is provided with spaced longitudinally extending grooves A! which extend from intermediatejof its ends to its for ward end and which combine to form a longi tudinally extending rib 42 therebetween which has'a beveled forward end 43 terminating at the 4 of the frame i3~into a longitudinally extending recess 66 formed in the upper portion of the frame It and which opens upwardly of its upper edge. The upper end of the trigger 64 is pivotally mounted at 61 on a block 68 of the frame ‘3 and which extends into the forward portion of the I recess 66. A spring pressed plunger 69 which is 10 bed of the pocket or depression ML The-pocket , or depression :18 opens downwardly into the grooves 41 at the forward end of the rib 152'. The underside of the bolt 25 is also providedwith a, transversely extending depression or groove 45 which is disposed rearwardly of the longitudinal ‘ grooves 4| and which is provided’ with, rounded forward and rear ends, as best seen in’ Figures 2, 3 and 4. As seen in Figure 5v the right-hand side of the bolt 25 is'provided with a longitudinally extending groove 45 which extends to its forward 1 end and laterally thereof into the recess’ GB for receiving an extractor: 46 which is, pivotally mounted therein, intermediate of its ends on a pin 4'! which extends vertically through an opening 48 of the bolt 25 and through an- opening 49 of the extractor £56. The extractor 46 isv provided with a laterally extending hook 59 at its forward end which extends radially'inwardly of the for ward end of the bolt 25 and into the depression 40. The opposite, left-hand side of the bolt 25 is provided with a longitudinally extending rela tively deep groove or channel 5! for slidably re ceiving an ejector 52 which extends laterally in— wardly through an opening 53 in the left side of the receiver 14, as seen in Figure 7, and which has an upturned?ange 54 at its outer end which engages a portion of the outer side of the re ceiver M and which is secured thereto by a fastening 55. The groove 51 extends from the forward end of the bolt 25 and is of a depth so that its bed portion opens into the depression 40 and the ejector 52 is of a length to extend to adjacent the bed of the groove 5! so as to move into the depression 40 as the bolt 25 approaches its retracted position of Figure 2. The hammer 26 is provided with a substantially T-shaped forwardly opening recess» 56 in its upper part and a groove 51 in the bottom part thereof which opens outwardly of the forward end of the hammer 26 and which terminates intermediate of the ends of said hammer to form a forwardly facing shoulder 58. A ?ring pin 59 is provided‘ with a T-shaped head 60 at its rear end which ?ts into the hammer recess 56 and said ?ring pin extends forwardly therefrom in the groove 38 and has a depending flange M at its forward end which is reciprocally disposed in the deep cut groove portion 39 of the bolt 25. The ?ange 6i terminates at its forward end and bottom edge in a forwardly extending pin portion 62 which’ pro-'-' jects into the depression 49, in its forwardmost position of Figure 4. It will be readily apparent that the hammer is nonrotatably connected to the bolt 25 by the ?ring pin 59 and the bolt 25 is prevented from turning in the receiver M by engagement of the ejector 52 with the bolt groove 5|. I The frame [3 is provided in its forward portion with an opening de?ning a trigger guard 63 in which the lower portion of a trigger 54 is swing ably disposed. The trigger Eel extends upwardly from the trigger guard E3 through an opening 65 mounted in a recess 10 of the frame 13 and which extends into the opening 65 bears against the trigger 64 and urges it to spring forwardly within the trigger guard 63,asil1ustrated in Figures 3 and 4. A sear bar, designated'generally ‘H, is disposed longitudinally in the recess 66 and is pivotally connected at its forward end at 12 tothe trigger 64', beneath and adjacent its pivot 8'3. The sear bar ‘H is provided near its forward end with ' an elongated clip receiving opening 13 and be 20 25 30 40 45 hind and adjacent thereto has an upstanding, rigid disconnector pin ‘M which extends upwardly through an opening 15 in the bottom portion of the receiver M. The frame :3 is provided with a hanger ‘is which extends downwardly into the recess 66, near the rear end thereof and through which the rear end portion of the sear bar ‘H loosely extends. Said sear bar ‘H is provided in its underside with longitudinallyspaced notches 11 for receiving the'ends of an arcuate, leaf-type , spring 18, the intermediate portion of which is bowed downwardly to rest uponthe bottom pore tion of the hanger ‘F6 for urging the rear end of the sear bar ‘II upwardly. The sear bar ‘H near its rear end is provided with a notch in its upper side forming a ramp surface 19'.’ A sear 80 is pivotally mounted intermediate of its ends by a ' pin 8! on the hanger 16 above the sear bar ‘H and has an upwardly extending forward, end 132 which extends upwardly into or through an open ing 83 in the bottom of the receiver 14. The opposite end of the sear8? terminates in a down turned portion 84 which normally engages the ramp surface 19. A spring 85 which seats against the bottom of the receiver I4 and bears on the upper rear end portion of the sear 80 urges said sear to rock in a counterclockwise direction on its pivot 8! for urging the rear end portion 84 down wardly against the ramp surface 19 and the for- - ward sear end 82 upwardly into the receiver I4. 50 60 65 70 75 A safety 86 extends transversely through the recess 66-, beneath the forward end of the sear 8t and has a cross bar 8'5 located beneath the sear 8E] and a knurled head 88 located on the outer left-hand side of the frame l3. By rotating the catch 86 the crossbar 81 thereof will urge the forward end of the sear 8i} upwardly and the sear bar ‘H downwardly for locking the sear in a posi tion for engagement with the hammer so as to prevent ?ring of the piston [2 when the safety catch cross bar 81 is in an upright position rather than in a horizontal position, as illustrated in Figures 3 and 4. The grip portion of the frame [3 has a bore 89 of oblong cross section extending from the bot tom thereof diagonally upwardly and forwardly and opening into the recessv 66 and which‘ aligns with an opening Qt in the bottom of the receiver M. The ‘core 39' is adapted to receive a cartridge clip 9| which is inserted therein from the lower end of said here and which extends upwardly through the bore 849 through the recess 66 and opening 90 into the lower part of the receiver Hi. The clip 91 has a portion extending loosely through th'eclip opening 13 of the sear bar ‘H, which opening 73 is of sufficient length to‘ allow the clip bar 1! to reciprocate longitudinally in the recess 66 and relatively to the clip 9l. A spring
  • 5. 2,659,994 5 projected latch 92 which is pivotally mounted in a recess 93 of the frame I3 and which has a hook portion disposed beyond the lower end of the frame i3, is normally held in a position with its hook portion engaging the lower end of the clip 25 for retaining the clip in an applied position, as illustrated in Figure 2. By manually swinging the clip latch 92 clockwise or to the left as seen in Figure 2, the clip ?ange 94 can be engaged for removing the clip 9| for reloading the pistol l2. ' The clip 9| differs from a conventional clip in that the sides thereof are slit longitudinally from its upper, open end to provide strips 95 the rear edge portions of which are bent inwardly to pro vide lips 96, for a purpose which will hereinafter become apparent. Assuming that the pistol I2 has just been loaded with a clip 9| containing cartridges 9‘! which are urged toward the open, upper end of said clip by a conventional spring follower, not shown, as is common in ?rearm clips, and fur ther assuming that the bolt and hammer are in forward positions, as illustrated in Figure 4, the uppermost cartridge 9'3 will be held below the open top of the clip 9| by engagement with the bolt rib 42 which extends into the open top of the clip 91. To initially load and cook the piece l2, the knob 34 of the action rod is grasped and pulled rearwardly to its position of Figure 2. It will be readily apparent that the bolt 25 and hammer 2G will be carried rearwardly therewith. As the hammer and bolt commence their rear ward movement the disconnector pin ‘Id will be disposed in the hammer groove 57. As the ham mer and bolt move rearwardly the rounded upper end of the disconnector pin 14 will engage the rounded rear portion 98 of the bottom of the bolt 25 which will function as a cam for initially cam ming the disconnector pin 74 and sear bar ‘I! downwardly. Said parts are again cammed down wardly by the forward rounded end of the bolt recess i313 and held in a depressed position by the rib 42, as illustrated in Figure 2, as the bolt and hammer reach a fully retracted position and in which position the sear end 82 is disposed in the bolt recess 45 and the sear end 86 is out of en gagement with the sear bar ‘II. By then releas ing the knob 34, the springs 35 and 31 will pro ject the bolt 25 and hammer 26 forwardly. As the bolt 25 moves forwardly the forward end of its rib 42 will engage the rear or rim end of the uppermost cartridge 91 which has been raised by the cartridge follower into the open upper end of the clip 9! when the rib 42 was moved rearwardly and out of engagement with the clip 9|. There after, said upper cartridge 91 will be carried for wardly with the bolt 25 and during its initial movement will be displaced upwardly by engage ment of its rim with the inwardly curved lips 96 to thereby cause the rim of the cartridge 97 to be displaced upwardly into the depression 40 of the forward end of the bolt face and as the ogive portion of the cartridge or projectile moves into engagement with the groove 23 of the ramp I9, which is disposed just forwardly of the forward, upper end of the clip 9!, so that said uppermost cartridge ill is displaced upwardly by the ramp I9 and the inturned lips 95. As the cartridge rim portion moves upwardly into the bolt face de pression all, a part of the rim will assume a posi tion behind the hook 50 of the extractor. The ramp l9 will guide the nose of the projectile into the barrel chamber 99 so that when the bolt 25 reaches its forwardmost position, as seen in Fig ure 3, the cartridge 91 will be chambered and the 10 15 20 30 35 40 50 55 60 65 70 6 . inclined forward surface 43 of the rib 42 will be in engagement with the groove 23 of the ramp 19. During this forward movement of the bolt 25, as previously stated, the hammer 26 will initially be moved forwardly therewith under the biasing ac tion of the main spring 37 but as the sear end 32 clears the rounded bolt surface 98 the sear spring 85 will rock the sear 8B counterclockwise on its pivot 8| for projecting the sear end 52 upwardllr through the opening 83 into the receiver I2 and into the hammer recess 51 to engage the hammer shoulder 58 so that the hammer 26 will be held in a partially retracted position by the sear end 82. Thereafter, the forward movement of the bolt 25 is accomplished by the pressure of the action spring 35 only. As the bolt surface 98 clears the disconnector pin ‘Ed, the spring 73 will swing the disconnector bar ll upwardly on its pivot 72 to its position of Figure 3. As the bolt 25 moves forwardly relatively to the hammer 26 after the hammer has been caught by the sear end 82, the ?ring pin 59 will slide relatively to the groove 38 in the deep portion 39 thereof so that the hammer pin flange {5! will move from its position of Fig ure 2 to its position of Figure 3 when the bolt has reached its projected position and the hammer 26 is held in a cocked position. Approximately .003 inch clearance exists between the bolt face and the barrel breach Ill and bushing i5 when the bolt 25 is in a forwardmost position as the bed of the recess 40 holds the cartridge rim tight against the barrel breech to provide proper head space, as seen in Figure 3. When a rearward pull is then exerted on the trigger 66, said trigger in swing ing rearwardly will displace the sear bar ‘H rear wardly from its position of Figure 3 to its position of Figure 4. As the sear bar ‘ll moves rearwardly the sear end 84 will ride up the sear bar ramp 79 to thereby cause the sear 86 to rock clockwise on its pivot 8| so that the forward sear end 82 will be drawn downwardly out of engagement with the hammer shoulder 53 thus releasing the hammer which is then projected forwardly by the main spring 3'! to its position of Figure 4, in which position the disconnector pin ‘M is disposed in the hammer recess 51. The ?ring pin 59 likewise moves forwardly with the hammer 26 and rela tively to the bolt groove 38, 39 so that as the ham mer approaches its fully projected position of Figure 4 the pin portion 62 will strike and deto nate the primer of the cartridge 9? for ?ring the piece. The recoil of the powder charge of the cartridge 91 will force the bolt and hammer rear wardly to their positions of Figure 2, as previously described heretofore in reference to the initial loading of the piece and which therefore need not be again described in detail. However, as the bolt 25 is propelled rearwardly by the recoil from the powder charge, the cartridge case mil will be ex tracted from the chamber 99 by the extractor hook 50 and carried rearwardly with the bolt 25 until a portion of the rim of the cartridge case I!!!) strikes the stationary ejector 52 which is slid ably engaged by the bolt groove 51 and which will “kick” the cartridge case I08 laterally of the re ceiver l4 and outwardly through the ejector open ing lill in the right-hand side of said receiver id. As the bolt moves rearwardly it engages the dis connector pin 14 to depress the sear bar ‘H, as previously described, so that the sear bar ‘(I is held in its position of Figure 2 until the bolt and hammer have returned to their positions of Fig ure 3. Accordingly, the trigger 64 must be allowed to move forwardly under the action of the spring pressed plunger 69 before the spring 78 can return
  • 6. aged-994 7. the rear end. of the sear bar ‘II: to its position‘- of Figure 3 and, from which the sear 801 can. be again rocked out‘ of engagement with the hammer shoulder 58', thus preventing the piece H from‘- re ?ring automatically under the action of the spring 31. As previously stated, the safety catch‘ 86’ cari be revolved 90° from its position of Figures 3 and 4 to lock the sear end 82 in a raised position to prevent ?ring of the piece. The sides of theframe 13 are covered and closed by suitable check stocks I02 which are detachably secured to the sides of the frame I3. 7 By unscrewing the plug 24, the bolt, hammer, action rod, action spring and main spring may be removed as a unit for cleaning thus providing a weapon which may be readily assembled and dis-* assembled, and by removing the receiver 14 from the frame it the remainder of the parts, c'on-> tained within the recess 6% will be exposed. When the piece i2 is constructed for ?ring large caliber ammunition a suitable bolt look, not shown, may be provided for locking the bolt in its forward-I most position until after the cartridge has been ?red. Various modi?cations and changes are con templated and may obviously be resorted to, with out departing from the spirit or scope of the in-> vention as hereinafter de?ned by the appended claims. I claim as my invention: 1. In a clip fed semiautomatic ?rearm, a re‘ ceiver having an open rear end, a plug detach‘ ably connected to and closing the rear end of the receiver, a bolt slidab-ly mounted for longitudinal movement in the receiver, a hammer mounted for sliding movement‘ in the receiver between the bolt and plug, said bolt and hammer being re movable from the receiver through its open rear end when the plug is disconnected. therefrom, an action rod detachably connected at its forward end to said bolt and extending rearwardly there~ from loosely through the hammer and plug and having an exposed rear end located rearwardly of the plug and adapted to be manually engaged‘ for retracting the bolt and hammer, spring means 10 15 20 35 40 45 mounted on the action rod and disposed within the receiver including springs individual to the bolt‘ and hammer for urging the bolt and ham mer forwardly of the receiver toward the breach, and a ?ring pin detachably connected to the ham~ mer and slidably engaging the bolt, said bolt, hammer, spring means and ?ring pin being re-> movable as a unit with the action rod through the rear end of the receiver when the plug is dis engaged therefrom. 2. In a ?rearm, a receiver having an open rear end, a closure detachably connected to the rear end of the receiver, a bolt slidably mounted in the receiver, a hammer slidably mounted in the re ceiver between the bolt and closure, an action rod extending slidably through the closure and ham mer and having a forward end detachably s'e cured, in the’ bolt, spring means mounted on the action rod and disposed in the receiver and in dividual to the bolt and hammer for urging the bolt- andv hammer forwardly of the receiver and away from the closure, and a ?ring pin detachably connected to the hammer for sliding movement therewith and having a forward portion slidably engaging in and guided by the bolt, said closure, action rod, bolt, hammer, ?ring pin and spring means being removable from the receiver as a unit through its open rear end when the closure is detached from the receiver, said hammer being adapted to be released from a retracted cocked position. by a sear for sliding movement away from the closure and toward the bolt. MARION W. YALE. References Cited in the ?le of this patent UNITED STATES PATENTS Number Name Date “ 909,398“ Gobel ____________ __ Jan. 12, 1909 1,083,872 Berthier ____________ Jan. 6, 1914 1,460,672 Hines _______________ July 3, 1923 1,571,592 Loomis ____________ __ Feb. 2, 1926 2,049,776 Hyde _____________ __ Aug. 4:, 1936 2,296,242 Brewer ____________ Sept, 22, 1942 2,464,427 Wilson ____________ Mar. 15, 1949