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Патент USA US2406981

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Sept 3, 1946-
/ ‘ c. A. YOUNG
Filed Dec. 7, 1942
23/57. 3.
villi/11E: xiii-‘q
8%? I 034%; Nays
Patented Sept. 3, 1946
Charles A. Young, Spring?eld, Ohio
' Application December 7, 1942, Serial No. 468,089
4 Claims.
(01. 42—s9)
by the housing. The sear for the hammer 6 is
indicated at l 0, this sear being pivotally mounted
upon a ?xed rod II which is supported by the
especially relates to means for readily converting
housing, the sear being spring-pressed to a posi
the gun into a straight ?re or a release ?re gun,
tion to engage a notch in the hammer by the
the construction being especially adapted to a gun
spring l2. The rear end of the sear overlies the
of the repeating type.
trigger in close contact therewith so that when
One of the objects of the invention is to provide
the trigger is swung to the position shown in
a more simple and effective means in a gun of the
Figs. 2. and 4 it will release the hammer. A de
type referred to to place ‘the mechanism in a po
10 tent, which in the present case is gravity-oper
sition for straight ?re or for release ?re.
ated to inoperative position, is indicated at l3,
A further object of the invention is to provide
this detent being pivoted upon the rod II and
improved means for the purpose speci?ed more
having a bent nose M which is adapted to en
particularly adapted to a gun in which the sup
gage with the lower inclined wall 15’ of a recess
porting frame or housing for the gun is neces—
15 IS in the hammer when the gun is to be used
sarily con?ned as to dimensions.
for release ?re. This detent has a rearwardly
Referring to the drawing:
extending tail l6 having its rear end bent to form
Fig. 1 is a longitudinal section of so much of
a nose. l'l adapted to cooperate with a projec
a gun as is necessary to illustrate the invention,
tion 7’ on the trigger when the gun is to be used
a portion of the parts being shown in side eleva
tion, the parts being shown arranged for release 20 for release ?ring but to be entirely free there
from when the gun is to be used for straight
?re and in the position they occupy before the
hammer has been released by the sear.
Referring now to Figs. 3 and 4, for straight
Fig. 2 is a longitudinal section showing some
?re the trigger ‘I is moved to its rearmost posi
of the parts in Fig. 1 but showing the parts in the
position occupied after the sear has been oper 25 tion so that the ?xed pin 9 will engage with the
forward end of the slot 8. When the trigger is
ated to release the hammer.
moved to this position, this removes the projec
Fig. 3 is a longitudinal section of so much of
tion 1’ on the trigger out of the path of the nose
a gun as is necessary to illustrate the invention
vI‘! of the detent whereby the nose M of the de
showing the parts in a position for straight ?re.
tent will be out of the path of the inclined wall
Fig. 4 is a longitudinal section of some of the
15' so that the detent therefore will have no
parts shown in Fig. 3 showing the parts in the
effect in holding the hammer cooked, the hammer
position assumed after the sear for the hammer
being held in cocked position only by the sear
has been released.
l 0. Further pressure upon the trigger will cause
As is now well known in the art, release ?re
guns are those which ?re upon releasing pressure 35 it to swing about the pin 9 to the position shown
in Fig. 4 to operate the sear to release the ham
upon the trigger after it has been drawn to its
mer and permit the gun to ?re as a straight
rearmost position as distinguished from guns
gun, the hammer being impelled to ?ring posi
which ?re upon a rearward pull upon the trigger,
tion by its spring 6’.
the release ?re being desirable to avoid ?inching
Referring now to Figs. 1 and 2, when the gun
upon the part of the shooter, and it is desirable 40
This invention relates to guns, it more particu
larly relating to guns of the small arm type and
to provide for using the gun either as a release
?re gun or‘ as a straight ?re gun.
is to be used as a release ?re, with the hammer
down the trigger is moved forwardly to the limit
of its forward movement which causes the in
Referring to the drawing, I represents a por
clined projection ‘l’ thereon to be aligned with
tion of the stock of the gun, 2 the barrel and 3
an intermediate metallic housing to which the 45 the nose I‘! of the detent; the forward movement
of the trigger being‘ limited by the contact of the
stock -.| is connected and which supports the bar
pin 9 with the rear wall of the slot 8. Further
rel and the ?ring mechanism, this housing hav
pressure upon the trigger will cause it to swing
' ing connected thereto the usual ?nger guard 4
upwardly about the ?xed pin 9 to not only cause
and also carrying the ?ring pin 5. The impact
member shown in the present case as a hammer 50 the sear N to release the hammer but also move
the nose M of the detent into the path of the
is indicated at 6. being pivotally mounted upon
the stationary rod 3’ which is supported by the
housing 3. The trigger is indicated at ‘l and is
provided with an elongated slot 8 through which
‘extends the stationary pin 9 which is supported 55
inclined wall l5’ of the recess in the hammer so
as to still maintain the hammer cocked, the in
clined portion of the projection ‘I’ riding on the
nose I‘! as shown in Fig. 2.
When pressure
upon the hammer is released, however, it will
swing by gravity, in the present case, to the posi
tion shown in Fig. 1 so as to permit the hammer
under the influence of its spring to cam the de
tent out of the path of the inclined wall I5 and
2. A ?rearm convertible from straight ?re to
release ?re operation and vice versa, said ?rearm
comprising a trigger, a trigger releasable impact
member, a sear normally biased into engagement
with said impact member for temporarily holding
permit the gun to ?re.
the latter in cocked position, a detent independ
The guard 4 acts as a 7'
stop for the trigger when it falls by gravity. Cross
reference is made to the companion application
Serial No.V468,088, ?led concurrently herewith
ent of the sear and trigger engageable with the
impact member to hold the impact member in its
cocked position subsequent to disengagement of
wherein an alternate construction is shown for 10 the‘sear therefrom by the trigger while the ?re
accomplishing a similar purpose and wherein
arm is in condition for release ?re operation, and
generic claims are contained ‘covering the in
stant disclosure;
The mechanism hereinbefore described is set
means for mounting the trigger for bodily move
ment into and out, of release and straight ?re
in either of the release ?re or straight ?re posi
area engageable with said detent to move the lat
tions by manual forward or rearward movement
ter into operative engagement with the impact
control positions, said trigger having a contact
of the trigger, respectively. It is obvious that
member when the ?rearm is conditioned for re
suitable indicia may :be placed upon the ?rearm
lease ?re operation and for movement out of op
adjacent the trigger so as to indicate the ?ring
erative relation with the detent by the bodily
position of the latter.
20 movement of the trigger when the ?rearm is con
Having thus described my invention, I claim:
ditioned for straight ?re operation, the detent
1’; A‘ ?rearm convertible from straight ?re to
being disengageable from the impact member by
release ?re operation and vice versa, said ?re arm
release of retractive pressure upon the trigger
comp-rising an impact member, a trigger, a sear,
when the ?rearm is conditioned for release ?re
a detent separate from the sear and trigger tem 25 operation.
porarilylholding the impact member cocked in
3. A ?rearm convertible from straight ?re to
dependently of the sear under certain condi
release ?re operation and vice versa, in accord
tions, said trigger being common to said sear
ance with claim 1, wherein the detent is mounted
and detent, and‘ a, mounttherefor upon which
for pivotal movement between the impact mem
the trigger is bodily slidable into alternate oper
her and the trigger.
ative positions, in one of which upon manual re
4'. A ?rearm ‘convertible from straight ?re to
traction it will disengage the sear to release the
release ?re operation and vice versa, in accord
impact member independently of actuation of the
ance with claim 1, wherein the trigger is mount
detent and in the other of which the trigger is
ed for pivotal and sliding movement relative to
operative upon manual retraction to disengage
the sear and detent.
the sear from the impact member and simultane
ously engage the detent with the impact member,
from which latter it is automatically disengaged
upon release of the trigger.
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