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2,688,203 Sepn 7 1954 A. F. GAlDos FOLDING LIGHT AUTOMATIC
RIFLE
5 Sheets-Sheet l Filed Feb. l, 1950
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2,688,203 Sept. 7, 1954 A. F. GAlDos FOLDING LIGHT AUTOMATIC
RIFLE
5 Sheets-Sheet 2 Filed Feb. l, 1950
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2,688,203 Sept. 7, 1954 A. F. GAlDos FOLDING LIGHT AUTOMATIC
RIFLE
5 Sheets-Sheet 5 Filed Feb. l, 1950
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2,688,203 Sept. 7, 1954 A. F. GAlDos FOLDING LIGHT AUTOMATIC
RIFLE
5 Sheets-Sheet 4 Filed Feb. l, 1950
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Sept. 7, 1954 A. F. GAlDos 2,588,203 FOLDING LIGHT AUTOMATIC
RIFLE
Filed Feb. 1, 195o 5 sheets-sheet 5
24/
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Patented Sept. 7, 1954 2,688,203
UNITED STATES PATENT OFFICE ' ' 2,688,203 `
vFoLDn'to LIGHT AUTOMATIC RIFLE
_ Alonzo F. Gordos, Redwood City, Calif. Applica-tionvFebruary
1, 1950, Seral'No. 141,801
l (o1. L12-vm
(Grranted'v under Title 35, U. S. Code (1952), sec. 266) _ '
l4 Claims.
1 .
This invention relates toa small- light weight automatic>
rearm. An objectY of this invention is to` provide an
easily transported firearm which. canv bev stowed in a
smallpackor similar. carrier. A particular objectof this
invention> is. tol pro- `
Vide a firearm which can> be disassembled. into small units
and. then stowed in. a small. pack which can be readily carried on
the back of a paratrooper. orv theA like. Another object of this
invention is tox provide
a rearm which canv be quickly disassembled into aI small number
of; units. or assembled. in~ the optimumottime without theuse of..
tools.. Another obiectfof thisY invention is to provide Y
a.- light-Weight rearm whichA can be red semi automatically or
automatically. Another object of this invention is. to- provide
a` rearm having a; simple safety- mechanism whichiis- easily
operated. Another object of this. invention is to provide
a-` iirearm with an improved. means for locking the-bolt inthe
battery position.
Another4 object of. this invention is` to provide a rearmwhiclr
may be readily assembled or dis assembled with a. minimum number of
tools. Thespeciiic nature of the invention as Wellas
other" objects and. advantages thereof Willi clearly appear from
a-description of- a preferred embodi ment as-shownvin: the
accompanying drawings in -. which.:
Fig. 1 is a longitudinal cross sectional; view of the receiver
and bolt with the' striker in the cockedr position.
Fig.Y 2 isf alongitudinal View partly- in. section I of a-
portion~ of- the=ba~rrel~ assembly andi is'iden tified to=be- read
asi` though: attached; to: the right
. handedge of Fig. 1. - Fig.. 3 is a longitudinal view partlyl
in section
ot the muzzle-,end of the' barrel. andis` a-_conti'nu ation
ofzFig; 2; .
Fig. 4'. isza longitudinall view.v of the'three units comprising
this invention disassembled.
Fig. 5>I isar perspectiveI view.r of` the` actuator bar. Fig.
bis7 a View similar'to Figa 1' but inthe red
position. v
Fig. 7 is anA enlarged plan View of the bolt re turn spring
rodassembly: .
Fig. 8l is' an enlarged' cross sectionalview taken on line
8`---8'of Fig. 1". '
Fig.. 9 is a right side enlarged View ofthe auto matic Sear.
v
Fig. l0. is a crossA sectionalview> taken on- line
10
.20
Fig. 11. is a View similar to Fig.. 1' showing the bolt in the.
recoiled position.
Fig. 12> is a cross. sectional. view taken on line |2-I2 of
Fig. 11. Fig. 13 is a cross sectional view taken on line
l3-I.3 of Fig. 1. . Fig. 14 is an enlarged side. view of' the.
ejector. Fig. 15 is an enlarged side view of the. extrac
tor. Fig. 1-6` is a partial longitudinal cross sectional
View ci the firing. mechanism in the. full- auto matic position.
.
Fig. 17v is an enlarged. crosssectional. view taken online
I1--l1.of.Fig.13.
Fig.. 1-8v is- a- right side enlarged View of the semiautomatic
sear. n
Fig. 19 is- an- enlarged partiallongitudinal cross sectional
view of the hinge portions.Y The gun disclosed in. this invention
comprises
primarily three units for ease of transportation, particularlyv
a stock. assembly- |2,. a receiver as sembly I3 which` is hinged.
thereto, and a-'barrel assembly Ul> which is bestshown in Fig.
4.
Stock assembly I2. comprises. a shoulder stock l5., a, stock
hingel 16,.. stock.. hinge. screws I1 and a .connector rod assembly
|18. The connector. rod assembly I8. comprises a red |l9..a.knob 2U
anda pin 2.| for fastening the knob 20,- on rod i9. The rear endv
of stock i5 is. provided with` a conven tional butt plate |29.
Receiver assembly I3 comprises ay housing or intermediatev stock
portion 22,. a receiver 23J and a trigger guard. 24- Receiver
housing; 22 is formed as an extensionof shoulder stock I5 and is
pro vided` vvith> an` anchor plate 25.. on' the rear end
. thereof which is fastenedl thereto by- screws 2B,
55
anchor plate 25V being provided. with a. threaded hole 21 to
receiveva threaded end. H33y of connector rod I!!> (Fig.
19).
Receiver 23 isprovidedwith a threadedlongi~ tudinal recess 2.8
in the' upper rear end thereof to receive a striker retainer 29.
The forwardend
off receiver 23 hasv a` longitudinal protruding. cy lindrical
boss 30. with. exterior threads 3-| pro vided for a purposevwhich
will be explained later. Receiver 23 is provided with. a dovetailV
trans verse slot 226 tov receive a conventional- rear sight 221.
`
A longitudinal. bore 32 is provided in theupper forward part of
receiver 23. extending outA through boss- 3i)` to receive a bolt
assembly 33.A Receiver 23 has a downward> depending, rectangular
por tion Sii beingv provided with a vertical magazine opening 35.
andv an angular slot> 3.61 to- receivev a lock 31 which will
belater> described.
-
2,688,203 3
Extending forwardly from threaded recess 28 ` a longitudinal
bore 38 is provided to receive a striker 39. Forwardly of
longitudinal bore 38 a small bore 4U is provided to slidably
support a reduced end 4| on striker 39. Forwardly of bore 40 and
connected to bore 32 an enlarged bore 42 is provided to receive a
buffer 43. On the forward upper right side of receiver 23 angularly
disposed is a slot 44 to permit ejection of a , fired round, and
for the accommodation of a bolt handle 80. On the rear surface of
portion 34 a transverse slot 242 is provided to receive a retainer
45 of la bolt return spring rod 48. Depending from the lower rear
end of receiver
23 a rectangular projection 41 is provided to receive a trigger
retaining clamp 48. tion 41 is provided with a vertical
cylindricalre cess 49 to receive clamp 48. Centrally disposed
Projec- ' 15
in. recess 49 a threaded hole 50 is provided to ' receive a
trigger guard screw 5I. Forwardly of projection 41 a depending lug
52 is provided with a transverse slot 53 to receive a retainer v54
of rod 46. A helical spring 1I surrounds bolt return spring rod 46
for a purpose to be later described. A pair of longitudinally
disposed holes 55 is pro vided in projection 41 to receive Sear
return plunger 56.l A transverse hole 51 is provided approximately
at the rear of kreceiver 23l below bore. 38 and at right angles
therewith to receive a safety lever 58. Forwardlyof hole 51 and in
line therewith a transverse hole 59 is provided to receive a sear
pin 60. Sear pin 6U is pro vided to receive an automatic Sear 6|
and a semi automatic sear 62, such sears being pivotally mounted
thereon. Forwardly of hole 59 another transverse hole 63 is
provided to receive a stop pin 64 which limits the
counterclockwise'move lment of sear 62.
Striker 39 comprises an enlarged diametrical rear end 65 having
an angular projection 66 on the bottom end thereof forming a hook
for the engagement of the sears. A cylindrical recess 61 is
provided in the rear end of striker 39 to receive the forward end
of ya striker spring 68. _Striker retainer 29 is provided with a
cylindrical bore 89 oppositely disposedrto recess 61 to re ceive
the rear end of striker spring 68. Striker retainer 29 is provided
with a knurled cylindrical head 10 to permit such retainer to be
assembled >in threaded recess 28.
A e011; 12 cylindrical in Centaur is provided with a
longitudinal bore 13 therein to receive a ring pin 14 of a
conventional shape and ` such Vbolt is reciprocable in bore 32. A
firing pin spring 232 surrounds pin 14 thereby biasing such pin
rearwardly. Bolt 12 is provided on the rear end thereof with
vertically positioned ways 15 to re--
' ceive a ring pin retainer 16. Firing pin 14 has a reduced
diametrical portion 11 on the rearrend
j thereof which is slidably received in a hole 18 of retainer
16. Bolt 12 is provided with a lon gitudinal dovetailed slot 19 on
the forward right side angularly disposed above the lhorizontal
axis thereof to receive bolt handle 88. A longi tudinal slot 8|
with a semi-cylindrical bottom is provided oppositely opposed to
slot 19V on the left side of bolt 12 in the forward end thereofA to
slidably receive an ejector 82. p ,
Bolt 12 is provided with a longitudinal shallow slot 234
rearwardly of and aligned with slot 19 therein to receive a bolt
handle strap 228. Strap 228 is provided with a protruding stud 243
which nests in a detent 244 thereby retaining bolt handle 80 in
position. Rearwardly of and in line with a slot 8| there is
provided an ejector
20
25
30
35
40
60
70
75
.. 44.
4 stop clearance longitudinal slot 235 to permit the free
movement of bolt 1'2 in bore 32 of re ceiver 23. In the forward
part of slot 8| there is provided a raised square lug 236 to limit
the rearward movement of ejector 82. Ejector 82 has an elongated
longitudinal lnotch 231 arranged for slidable engagement over vlug
236 in slot 8|. Ejector 82 is urged rearwardly" by an ejector
spring 238 which is assembled in slot 8| between a rear surface 239
of lug 236 and a rear surface 240 of notch 231. When the bolt
assembly 33 moves rearwardly in recoil after discharging car tridge
|3|, ejector 82 comes in contact with an ejector stop.24| secured
to receiver 23 and pro truding into bore 32 whereby ejector 82
stops in `relation to the bolt thereby ejecting spent car tridge
I3I out of the receiver 23 through slot
Bolt 12 is provided with a transverse slot 83 on the bottom near
the rear end to receive lock 31.
Bolt handle 80 has a- depending arcuate han dle portion 84 for
manually operating bolt '12. A longitudinal rectangular slot 85 is
provided on bolt handle 80 to receive a spring biased'ex tractor
8'6 which is pivotally secured thereto by an extractor pin 81.
Retainer 16 is provided with a rectangular open slot 88 on the
bottom end thereof to permit a bolt return slide 89 to contact bolt
12. Bolt return slide 89 is provided with a depending body portion
90 having an axial hole 9| therein. Bolt return slide 89 is
slidably mounted on bolt return spring stud 4B by means of hole 9|.
Bolt return slide 89 is biased for wardly by'bolt return spring 1I
thereby urging bolt 12 into the battery position. Lock 31 is pro
vided with' a rectangular open slot 92 angularly disposed on the
left side thereof for a purpose t0 be later described. `
Trigger guard 24 is provided with a rear hinge portion 93
terminating in a depending boss 94 having a transverse hole 95
therethrough. Shoul der stock I5 is pivotally mounted to receiver
housing 22 by a hinge screw 96 which passes through _hole 95 of
boss 94 and is threadably se cured to Stock hinge I6. A vertical
counterbored hole 91 is provided near the rear end to receive screw
5I. A longitudinal rectangular recess 93 terminating in
semi-cylindrical ends 99 is pro vided on the top of trigger guard
24 to receive a trigger retainer |00. A vertical threaded hole |0|
is provided on the forward part of recess -98 to receive a trigger
retainer screw |02. Trigger retainer |00 is held in position at
the
rear end by retainerclamp 48. An elongated longitudinal slot |04
opening from the rear end is provided in trigger retainer |00 to
permit a trigger |05 to slidably pass therethrough. Trig ger |05 is
provided with the conventional type linger piece |06 depending
therefrom. A cylin drical longitudinal recess |01 is provided in
the rear end of trigger |05 to receive a spring biased trigger
return plunger |08 to urge such trigger forwardly. Opposed
longitudinal rectangular slots |09 are provided to slidably mount
trigger |05 on retainer |00. A rectangular longitudinal seat IIO
opening on the top and right side of trigger |05 is provided to
receive trigger latch body | I I which is welded thereto or can be
made integral therewith. A transverse cylindrical re cess II 2 is
provided on the rear right side of trigger |05 to receive an
automatic lever pin II3 for the pivotal mounting of an automatic
lever I I4.
Trigger latch body | I I is provided with a trans verse hole II5
in the center thereof to receive
-
Y scar pin 60.>
5 a trigger latch. H6. A transverse raised projec tion ||`| is
provided on the rear endV of body ||J| with. a forwardly openingv
slot ||8 tol receive a flat trigger latchr spring H5 which.' biases
trig ger latch |16 clockwise. Automatic lever H4 has a transverse
hole |20y for mounting'such lever on pin || 3. Automatic lever H54
is provided with an opstanding arm |2|fffor the functioningl of the
semi-automaticv sear 62. and a downwardly projecting arm |22v for
limiting'the pivotal move ment of lever |14 in the automatic
position. Automatic sear 6| is provided with> al transverse
hole |24 for pivotallyv mounting such~ scar on An upstanding.'
projection |25- is
provided on the forward` top portion of auto matic- sear 6| for
the engagement of projection 66' on striker 39. On the lower left
hand side of automatic sear 6| a transverse projecting lug |26 vis
provided for engagement with latch |~ |6. Semi' automatic sear 62
is constructed similar to auto matic sear 6| with the exception
thata ledge |21 is' provided on the front end thereof for engage
ment with pin 64 and a lower transverse pro' jecting lug |20 being
on the right side similar to lug |26 of sear 6| but roppositely
disposed. Semiautomatic sear 62 is also provided with a projection
|23 on the rear' end arcuatel'y formed for engagement with safety
lever 56. A conventional magazine |30v constructed to
receive a double row of cartridges |"3`f is used with this
invention and is removably retained in magazine opening 35l of
depending portion 34 by a resilient latch |32 which is plvotally
secured toV the lower front surface of receiver 23. Latch |32 has a
rearwardlyr projecting hori zontal ledge |33> which engages a
slot |34 in magazine |30 to position such magazine in> the
operative position. Barrel assembly |4 comprises a barrel |35,
a
barrel nut |36, an actuator assembly |31A and a forestock
assembly |38. The rear end of bar rel |35 is of reduced diameter as
shown at |39 to slidably lit in borev 32 of receiver 23. For wardly
of end |36 an enlarged diameter portion |40 is provided to be
rotatably received in' a counterbore |4| of nut tt.l `The rear end
of counterbore |4'| in barrel nut |36 is interiorly threaded as
shown at |45 to engage with threads 3| and thereby secure barrel
|35 in- receiver 23. The rear portion of the enlarged diameter |40
is provided with a longitudinal keyway |42 on the top and bottom to
receive a pair' of keys' |43 which are also receivable in slots |44
in boss 30 of receiver 23' to properly align and position the
barrel in the receiver and also to prevent rota tion of'barrel |35
and prevent upsetting the head space. Forwardly of enlarged
diameter |40, bar rel |35 is provided with annular ribs |46 equi
distant apart and extending approximately one half the length of
the barrel to eiiect the cooling of the barrel. Forwardly of ribs
|46 barrel |315 is provided with a reduced diameter' portion |41 to
receive a rear barrel band |48. Portion |41 is provided with a
longitudinal keyway |49 on the top surface thereof which is in
alignment with keyway |42. The muzzle end of barrel |35 is a
reduced portion |50 to slidably receive an actuator |5|. Rearwardly
of portion |50 a threaded diameter |52 is provided to receive a
front barrel band retaining nut |53; An enlarged diameter |54
rearwardly of threads |512 is pro vided to receive a front barrel-
band |55. Diame ter |54 has a keyway |56 providedl on the top which
is in longitudinal alignment' with keyways |42 and |49. ' -
5
10
30
70
Rear barrel' band?v |48=y isprovided: with'.` a; longt tudinal`
loref |51; to.` receive.> portion4 |4lf ofv barrel |35. A.
longitudinal lceywayA |58' is- prmii'decly on the top< part of
bore i513 toz receive` a. key |58?. Verticali-.v below bore lz't
and inlalignmentxthere with a- counterbore> |60. is provided to
receive the rear endl.v or.y an. actuator springy housing: |:6-|;'.
Rearwardlyf of counterbore: Mill a. reduced:> diame terv hole
|62 is' provided to slidably receiveb an actuator' rod:- |63'.
Bifurcated downwardly des pending- ears Hill. are provided at'they
bottom of rear'barrelband |148'fto receiveiseyebolt t65ltlfxere
between.. Ears |l64 are provided with> suitable transverse holes
|616` to threadably secure an eye bolt screw |:6;'|> which>
passes'` freely through the eye in bolt |;6'5 totv permit pivotal
movement` of torestoclc |38" aboutlscrew> |161 in rear barrel
band |481 Front barrel> band |515? is provided' with a lon
gitudinal' bore |158' to receive diameter 54 of barrel |3i5. A
keyway' |69 i's provided ontheztop part of bore |;68 to: receive a
keyf |10 for secur ing: such: band on barrel |35. vertically above
and transverse therewith front band |155 is pro vided: with. a
dovetailed slot -`| If to receive a'. front sightv ||'|2..
vertically below here |,68 and oppos ing; counterbore |.6f of rear
band |248; fronti band t55 is.l provided with a counterbore
|i.'|.f3 tov re ceive the' forward end of actuator spring hous
|6|f. li'orwardly'r of counterbore |13 a small diameter hole
|314 is;- providedy to slidably receive anactuator rod extension
|81. Front barrel band retaining nut- |53. is: provided withv a
longitudinal ttmeadedl.l bore |15 for' thread'ab-le engagement
with. threaded diameter | 52 of barrel |l35 thereby securely
positioning fron-t band |2515; Actuator |5| is` provided with a
longitudinal
bore' HB at thev fronti end thereof' to permit pas: sage of;` a
iired- bullet |111. A bore |f'|8 is pro vided in the rear end of
actuator | 5| and is slid abiiy receivable on-` portion |150v of
barrel' |35. A gas; chamber |19- is provided between bores |16 and
|18- to permit the expansion of the gases andv also' the impinging
of' samev on the forward inside Wall |00 of actuator |5|,f.
Downwardly depending from actuator |5| there is providedy a lug mit
havin-g a longitudinal bore |62 therein to receive an actuator rod;
nuit 1&3. Bore |82). is provided withr a transverse hol-'e |84
toy receive a lock pin |05' for securing.' nut |83: in position.
Nut i3 is: provided with a knurled head |66- to facilitate
assembly.. (Nut |483. is provided with; a longitudinal cylindrical
recess |188? in the rear end: tloereoiv a threaded recess` |189
forwardly
l therefrom to receive a threaded end 901 of ex tension is?.
Actuator spring housing [6| is pro vided with a longitudinal
counterbore |191: on each end thereoior a purpose to be: later de
scribe-d.
A. thin vertical wall section |92 is provided. in actuator
spring housing |6| between countei'bores IBI and having a
longitudinal small: hole |93'y to slidablfy receive extension |81.
An enlarged di ameter portion` |94 is provided on the rear end of
extensionv |81y andl is slidably received in the rear counterbore
|91 of housing i-Gl. Enlarged portion |94 is provided with a
longitudinal threaded recess |85> therein to> threadably
secure a threaded end |96 of rod- |63~. Forwardly of enlarged
portion |94 an. intermediate reduced diameter portion |9~`| is
provided toy be slide-bly received in hole |93 of. housing |6|1.
The forward end of extension |81 is a reduced diameter por tion
|98V andv is slidably received> in holev |141 of Vbarrel' band
|55. A shoulder |99> formed at
-
2,688,203 7
the intersection of portions |91 and |98 provid ing ` a stopping
surface for a washer 200. . An' actuating spring 20| is assembled
in the> forward counterbore of housing |6| between the bottom
surface of counterbore |13 of front band |55 and against washer 200
to bias actuating rod extension - |81 rearwardly. An- actuator rod
buffer 202 is slidably mounted in the rear coun terbore of housing
|6| to slidably receive portion |91 of extension |81 to absorb the
shock when the large` portion |94 goes forwardly under the impact
of the actuating gases. 'Ihe rearward end of actuator rod |63 has
an annular recess 203 to receive a stepped notch'204 of an actuator
bar 205 which is loosely coupled therein (Fig. 5). Actuator bar 205
is provided with an offset lug
206 facing to the right and on the front end to accommodate
notch 204. A lock actuating stud 201 is provided in the center and
protrudes to the right of actuator bar 205 for a purpose to
bedescribed later. An offset projection 208 protruding to the right
on the rear end is pro vided on actuator bar 205 for a purpose to
be later described. Forestock assembly |38 comprises a
forestock
209 which is approximately rectangular in cross section and is
arcuately relieved on the top por tion to receive barrel |35. A
latch housing re tainer 2|0 is secured. to the rear end of stock
209 by conventional wood screws. Latch hous ing retainer 2|0 is
provided with a longitudinal hole 2|| to receive a latch bar 2|2
for locking forestock assembly |38 to the firearm through the means
of a latch plate 2|3 which is secured to receiver housing 22 on the
front end thereof by conventional wood screws. A longitudinal
recess 2|4 axially aligned with
hole 2|| in forestock 209 is provided to receive a latch housing
2|5. Latch housing 2|5 is pro vided with a longitudinal recess 2|6
to receive latch bar 2|2. A helical spring 2|1 is provided to bias
latch bar 2|2 rearwardly in latch hous ing 2 I5. Latch bar 2|2 is
provided with a ver tical threaded recess 2 |8 to receive a latch
screw 2| 9. Latch housing 2| 5 is provided with a longi tudinal
slot 220 in the bottom side thereof to permit passage therethrough
of latch screw 2I9. An enlarged knurled head 22| is provided on
latch screw 2|9 and extends through the bot tom of forestock 209 to
permit the manual for ward release of latch bar 2|2 thereby
allowing the forestoek assembly |38 to be pivoted down wardly
through the means of eye bolt |65 Which is threadably secured in
the forward part of fore stock 209. Forestock 209 is provided with
a rectangular
longitudinal slot 222 opening from the top on the rear end
thereof to receive a barrel nut lock 223 which is secured to the
bottom surface thereof. Barrel nut lock 223 is provided with a
resilient upstanding tooth 224 which cooperates with longitudinal
serrations 225 on barrel nut |36 whereby such nut secures barrel
|35 at the proper headspace in relation to bolt 12, and secures
such barrel to receiver 23. A narrow longitudinal slot 233 is
provided forwardly of slot 222 in forestock 209 to accommodate rod
|63.
ToV disassemble` the barrel assembly |4 for stowing purposes, as
shown in Figs. 2 and 4, it is only necessary to rst pull latch
screw 2|9 for wardly thereby removing latch bar 2|2 out of
engagement with latch plate 2 | 3 of receiver hous ing 22 whereby
forestock assembly |38 can be swung downwardly; second, disconnect
actuator .rod |63 from notch 204 of actuator bar 205; and*Y
15
25
30
35
40
45
50
55
60
65
70
75
8 third, unscrew barrel nut |36 forwardly from out of engagement
with thread 3| vof receiver 23. The hinging of the stock assembly
|2 `in relation to the receiver assembly |3,` as shown in Fig. 4,
can be accomplished simply by unscrewing con nector rod assembly I8
rearwardly from anchor plate 25 of receiver housing 22. ' .
Bolt 12 can be removed from the receiver as sembly |3 after the
barrel assembly I4 is detached therefrom by first removing bolt
handle strap 228 which resiliently holds bolt handle 80 secured in
bolt 12; second, depressing'lock 31 out of en gagement with slot 83
in bolt 12 which may be accomplished either by pulling actuator bar
205 forwardly which protrudes- ,out of the front of receiver
assembly |3, or by pushing forwardly manually operated bolt release
lever 229 which protrudes through a slot 230 in the left side of
the rifie and is secured to actuator >bar 205; third, retract
bolt 12 rearwardly suiiiciently to remove handle 80 out of slot 44
of receiver 23; and fourth, release striker 39 and under the bias
of striker spring 68, bolt 12 will be forced forwardly clear of the
receiver assembly |3. 'Y
Operation After the insertion of the magazine |30 loaded
with the cartridges |3| into the magazine open ing 35 of
receiver 23 and secured therein-by mag azine latch |32, lock 31 is
angularly cammed downwardly out of slot 83 of bolt 12'by pressing
forwardly lever 229 with the thumb of the left hand, such lever
being> on the left side of the rie. The bolt 12 is then
retracted to the rear by handle 80 permitting the uppermost round
|3| in the magazine |30 to enter the chambering space between the
bolt 12 and the end of the barrel |35 whereby on the return of the
bolt into the battery position, the round is chambered in the
barrel and the gun is charged for ring. Before firing, the safety
lever 50 must be set in the "re position. . -
Semia'utomatic and automatic lire are both ac complished by
pulling the trigger |05 rearwardly ina horizontal plane Varying
distances, that is, pulling the trigger only part way operates the
gun in semiautomatic reand pulling it all the way until it stops,
operates the gun in automatic fire. When the trigger |05 is pulled
rearwardly the spring biased latch ||6 pivotally attached thereto,
trips the automatic and semiautomatic sears 6| and 62,
respectively, thereby releasing the striker 39 allowing same to go
forwardly under the urging of striker spring 68, striking firing
pin 14 in bolt 12 thereby discharging car tridge |3|. As the bullet
|11 travels along the bore 23|, the bolt is locked. When the bullet
|11 has cleared the bore 23| at the muzzle end and while passing
through gas chamber |19 in the actuator. I5 l , the gases escaping
from the bore 23| impinge on the front wall |80 thereby forcing the
actuator |5| forwardly which in turn moves the actuator bar 205
also forwardly thereby cam ming the look 31 downwardly, With the
assist ance of the back pressure of the gases developed at the
instant bullet |11 is passing through bullet aperture |16 of
expansion chamber |19 of actu ator |5|, bolt 12 is driven
rearwardly and the spring pressed striker is then returned rearward
ly and is engaged by the automatic and semi automatic sears. - At
the end of the recoil stroke the bolt 12 is returned to the battery
position under the bias of spring 1|, picking up the up permost
cartridge |3| from the magazine |30 and chambering same in the
barrel. scavenging
-
of remaining gases in chamber |19 isaceorn' pli'shed` by vacuum
formed by the baseof bullet IEW ass it leaves aperture> |162`
The actuator bar 205i is=v returned rearwardly under the vbias-
>of spring-2M thereby camming' theI lock upwardly and locking'
the bolt in the- battery position. In automatic fire when thev
trigger |05? is: pulled
to the. stop- position, the. automatic liever H4 holds ther
semiau-tomatic sear 62 only rearwardly pre venting its engagement
with striker projection 66. When the semiautomatic Sear is thus
held out of engagement, the automatic sear 6| func tions normally
and is- released from the striker 30 by the projection M8y of
actuator' bar 205fa'fter the actuator |5| returns to the normal
position under the bias of spring 20| thereby continuing the firing
until the trigger is released. In semi automatic fire when trigger
|05 is pulled rear wardly and the latch | |-6 disconnects both the
sears, such latch then overrides the bottom por tions |20 and |28
of automatic and semiauto matic sears, respectively, under the bias
of plungers 56 thereby allowing the sears to re engage the striker
39 and the trigger |05 then has to be returned to its forward
position before latch I|6 can re-engage the sears.
It will therefore be apparent to one skilled in the art that
application of the principle of the invention disclosed herein
provides novel and improved firearm construction which is out
standingly characterized by a small number of parts and simplicity
of configuration of such parts. In addition, a light weight rifle
is dis closed which can quickly and without the aid of tools be
disassembled in three small units for convenience in transportation
of such light rifle.
I claim: 1. In an automatic firearm having a hinged
stock unit and a receiver unit, the combination of, a barrel
unit comprising a barrel, a sleeve re leasably coupling said barrel
to the receiver unit in longitudinal alignment, a barrel band xedly
secured to said barrel, a forestock pivotally se cured to said
barrel band, latching means to releasably secure said forestock to
the receiver unit in longitudinal alignment, and a lock lo cated in
the bottom of a longitudinal recess in said forestock under said
sleeve and provided with an upstanding portion terminating in an
apex top portion to cooperate with longitudinal serrations on said
sleeve whereby rotation of said sleeve is prevented when said
barrel unit and said fore stock are in longitudinal alignment with
the re ceiver unit and whereby said lock cannot be dis engaged from
said serrations when said forestock is in longitudinal alignment
with said barrel unit.
2. In a firearm having a receiver, a barrel re movably coupled
thereto, and a trigger guard secured to the Iunderside of the
receiver, the com bination of an intermediate stock portion form
ing a seat for the receiver and having an open ing in the underside
thereof for passage of the trigger guard therethrough, a strip-like
exten sion projecting rearwardly from the trigger guard in abutment
with the underside of said interme diate stock portion, a shoulder
stock portion hingedly secured to the terminal end of said trigger
guard extension for pivotal movement between an extended position
forming a continu ation of said intermediate portion and a stowed
position wherein said shoulder portion is folded forwardly beneath
said intermediate portion, means for locking said shoulder stock
portion in
10
25
30
35
40
45
50
55
60
65
70
75
10 thei'extended- position thereof, a forestock por tion mounted
to the underside of, the barrel for wardly of said intermediate
stock portion, and releasable latch means forv locking said
forestock portion to said intermediate stock portion in lon
gitudinal lalignment therewith'.
In a firearm, the combination of a receiver, a bolt slid'ably
mounted" in said receiver for lon gitudinal reciprocal movement, a
barrel having a. depending' front bandA thereom a sleeve cou pling'
said barrel to said receiver in the proper headspace relationship
relative to said bolt,> key means for preventing relative;
rotation between said- barrel >and said receiver, an
intermediate stock portion forming a seat for said receiver and
substantially coextensive therewith, a shoul der stock portion
hingedly secured to said inter mediate stock portion for pivotal
movement be tween an extended position forming a continu ation of
said intermediate portion and a stowed position wherein said
shoulder portion is folded forwardly beneath said intermediate
portion, screw means releasably locking said shoulder stock portion
to said intermediate portion in said extended position of said
shoulder portion, a fore stock portion pivotally mounted at the
front end thereof to said barrel band, latch means in the rear end
of said forestock portion engageable with the front end of said
intermediate portion to hold said forestock portion in longitudinal
alignment therewith, said barrel coupling sleeve having a plurality
of annularly disposed serrations on the exterior thereof, an
upwardly projecting detent in said forestock engageable in one of
said ser rations for locking said coupling sleeve against rotation
and thereby preventing any change in the headspace relationship
between said bolt and said barrel, and means for releasing said
latch means to disengage said forestock portion from said
intermediate stock portion whereby said forestock portion is free
to pivot about the front end thereof and thereby withdraw said
detent from locking engagement in one of said serra tions in said
sleeve to permit uncoupling of said barrel from said receiver.
4. In a firearm having a receiver and a barrel removably coupled
thereto, the combination of an intermediate stock portion forming a
seat for the receiver and substantially coextensive there with, a
shoulder stock portion hingedly secured to the rear end of said
intermediate stock por tion for pivotal movement between an
extended position wherein said shoulder portion forms a
continuation of said intermediate portion and a stowed position
wherein said shoulder portion is , folded forwardly beneath said
intermediate por tion, means for locking said shoulder portion in
the extended position thereof, a forestock por tion having a screw
secured in the front end thereof and projecting forwardly therefrom
to terminate in an eye portion, a depending front band on the
barrel, key means for locking said front band against rotation
relative to said bar rel, said front band having a bifurcated
portion on the underside thereof for rotatably receiving said eye
portion of said screw therebetween, a bolt threadably secured in
said front band bifur cated portion and passing through said eye
por tion whereby said forestock portion is pivotally secured to
said front barrel band, and releasable latch means for locking said
forestock portion to the front end of said intermediate stock por
tion in longitudinal alignment therewith.
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2,688,203
References Cited in the 111e of this patent UNITED STATES
PATENTS
Number 525,151 543,138 652,583
1,084,848 1,144,994 1,363,262 1,425,810 1,460,807 1,994,489
2,077,415
Name Date Mason __________ __ Aug. 28, 1894 Murray _________ __
July 23, 1895 Baird ____________ __ June 26, 1900 Demele _________
__ Jan. 20, 1914 Berthier __________ __ July 6., 1915 North
____________ __ Dec. 28, 1920 Thompson ________ __ Aug. 15, 1922
Walther et al. ____ __ July 3, 1923 Simpson ________ __ Mar. 19,
1935 House ___________ __ Apr. 20, 1937
5
10
Number 2,187,640 2,216,022 2,308,598 2,341,260 2,364,548
2,423,854 2,437,137 2,485,155
Number 373,5 17 589,475
12 Name ' Date
Bost _____________ __ Jan. 16, 1940 Pomeroy ________ __ Sept.
24, 1940 Ferrel ___________ __ Jan. 19, 1943 Barnes ___________ __
Feb. 8, 1944 Pederson _________ __ Dee. 5, 1944 Simpson ________ __
July 15, 1947 Swebilus __' ______ __ Mar. 2, 1948 Koucky _________
__ Oct. 18, 1949
FOREIGN PATENTS Country Date
Italy ____________ __ July 27, 1939 France ___________ __ Feb.
21, 1925
