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Патент USA US2406980

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Sept- 3, 1946.
c. A.' YOUNG
2,406,980 I
COMBINED RELEASE FIRE AND STRAIGHT FIRE GUN
-Filed De‘o. '7. 1942
2 *Sheets-Sheet 1
,Ki/W4» Vf.
BY
INVENTOR.
`
`
A TTOQNEYÖ
Sept. 3, 1946.
`2,406,980
c. A. YOUNG
COMBINED RELEASE FIRE AND STRAIGHT FIRE GUN
' Filed Dec. 7, 1942
1
2 Sheets-Sheet 2
Patented Sept. 3, 1946
2,406,980
UNITED STATES PATENT OFFICE
2,406,980
COMBINED RELEASE FIRE AND STRAIGHT
FIRE GUN
1
Charles A. Young, Springfield, Ohio
Application December 7, 1942, Serial No. 468,088
6 Claims. (Cl. 42-69)
This invention relates to guns, it more partic
ularly relating to guns of the small arm type
and especially relates to means for readily con
verting the gun into a straight iire or release fire
gun.
One of the objects of the invention is to pro
vide more simple and effective means in a gun
2
Fig. 10 is a transverse section on the line Iû-I I)
of Fig. '7.
As is now well known in the art, release ñre
guns are those which fire upon releasing pres
sure upon the trigger after it has been drawn to
its rearmost position as distinguished from guns
which fire upon a rearward pull upon the trigger,
of the type referred to to place the mechanism
the release ñre'being desirable to avoid “ñinch
in the position for straight iire or for release
ing” upon the part of the shooter, and it is de
fire.
10 sirable to provide for using the gun either as a
A further and more specific object is to provide
release iire gun or as a straight fire gun.
a mechanism of the character referred to in
Referring first to Figs. 1 to 4, inclusive, of the
which the function of converting the gun into
drawings, I represents a portion of the stock of
a straight fire or release fire is accomplished by
the gun, 2 the barrel, 3 an intermediate metallic
`a movement of the trigger from a forward po 15 housing to which the stock I is connected and
sition to a rearward position in the housing in
which supports the barrel and the firing mech
which the ñring mechanism is located.
anism, this housing having connected thereto the
A further object of the invention is to provide
usual finger guard `‘I and also carrying the firing
a device for holding the sear for the impact mem
pin 5. The hammer is indicated at 6, being piv
ber in inoperative position when the trigger is 20 otally mounted upon the stationary pin 6" which
to be shifted from one of its positions to the other
is supported by housing 3. The trigger is indi
and for also having said device operate to lock
cated at 'I and in the present case has a detent
the sear in its engaged position with the hammer
B integrally formed therewith, the detent having
and also have said device adapted to permit the
a bent nose 8'. 'I'he trigger has an elongated slot
free movement of the sear to a position to engage
9 and extended through this slot is a fixed pin I0
the impact member when said member is cocked.
which is supported by the housing. The sear for
In the accompanying drawings:
the hammer is represented at II, this sear being
Fig. 1 is a longitudinal section of a portion of
pivotally mounted upon the fixed pin I0 and
a gun of the lbreak-down type embodying the im
having a lateral extension II’ adapted to engage
provements, a portion of the parts being shown 30 in a notch in the hammer to hold it cocked, the
in elevation, the parts being shown in released
sear being pressed to engaging position with the
fire position.
‘
notch by the coil spring I3. The sear lies close
Fig. 2 is a longitudinal section of some of the
to the trigger ‘I and has its rear end laterally
parts shown` in Fig. l, but in a different position.
offset as indicated at I I" which oifset portion lies
Fig. 3 is a longitudinal section of a gun show 35 over the trigger. The trigger extends through an
ing the parts in arposition for straight firing,l a
elongated slot 3' of the housing and is capable not
portion of the parts being shown in elevation.
only, of a rearward and forward movement in
Fig. 4 is a plan view of the sear.
the slot to the extent allowed by the movement
Fig. 5 is a longitudinal section of a modifica
of the slot 9 in relation tothe fixed pin ID, but
tion showing the `mechanism applied to a pump 40 also of a swinging movement about the pin I0.
gun, with some of the parts shown in side eleva
Referring now to Fig. 3, -for straight fire, with
tion; the parts being shown in the position as
the hammer 6 down, the trigger 'I is pulled back
sumed after the gun has been fired and also in
Wardly so as to remove the integral detent 8 out
the position for straight ñring.
of the path of the hammer when the hammer is
Fig. 6 is a view similar to Fig. 5 but showing 45 cocked, the rearward movement of the trigger
the impact member in cocked position.
being limited by the forward wall of the slot 9
Fig. 7 is a longitudinal sectional view of some
engaging with the stationary pin I0. When the
of the parts showing the trigger shifted to a po
hammer is cocked the sear II engages with the
sition for release fire and also showing the parts
notch in the hammer to hold the hammer cocked
in the position assumed after the impact mem 50 by the pressure of the sear spring I3. When
ber has been released by the sear.
the sear spring I3 throws the sear II to a po
Fig. 8 is a View similar to Fig. 7 but showing
sition to engage the notch in the hammer a pro
the impact member in cocked position.
jection I4 on the rear end of the sear will enter
Fig., 9 is a vertical section on the line 9-9 of
a notch I5 on the upper surface of the trigger.
Fig. 7.
55 Tofîre, further pressure in a rearward direction
2,406,980
3
is put upon the trigger which causes the trigger
to swing about the stationary pin Il) and lift
the rear end of the sear || to cause it to disen
gage the hammer to permit it to move to firing
position by the action of its spring |6. This
swinging movement of the trigger, however, is
not sufficient to place the bent nose 8' of the de
tent 8 in engagement with the hammer so that
the firing is a straight rire action.
`
'
4
mer is cocked the sear 3l engages with the notch
in the hammer to hold the hammer cocked by
the pressure of the sear spring 33.
When the
sear spring 33 throws the seal- to a position to
engage the notch in the hammer a projection
34 on the rear end of the sear will enter a notch
35 on the upper surface of the trigger. To ñre,
further pressure in a rearward, direction is put
upon >the trigger to cause the trigger to swing
Referring now to Figs. 1 and 2, when the gun l@ about the stationary pin 3|) and lift the rear end
of`> the sear 3| to'cause the forward end of the
is to be used as a release fire gun, with the ham
sear to disengage the hammer to permit it to
mer down, the trigger '| is moved forwardly to
move to ñring position by the action of its spring
place the nose 8' of the detent 8 in the path. of
3-6. This swinging movement of the trigger how
the hammer when the hammer is cocked, the
ever isr not sufficient to place the bent nose 28’
bent nose of the detent 8 beingÍ placed in the
ofthe detent 23 in engagement with the ham
path of the lower inclinedwall of the notch 6' in
the hammer but does not come in contact with, ' mer so. that thefiring is a straight fire action.
_ Referring now to Figs. 7 and 8, when the gun
the lower wall of the notch, a slight clearance
is to be used as a release ñre gun, withn the ham
being left between the walls of the notch and the
bent end of the detent to prevent binding. The , mer down, the trigger 2l is moved forwardly to
place the nose 2-8’ of the detent 28 in the path
projection I4V has also been placed in line with
of the hammer when the hammer is cocked, the
the notch |'| in the trigger so that when pressure
bent nose ofthe detent in the present case being
is put upon Vthe trigger in a rearward direction
placed in the path of a laterally extending pin 26’
it will swing about the pin I0 to cause the walls
of the slot tor engage with the projection |4 to .` carried by the hammer but does not come in
close contact therewith, as shown inrdotted lines
tilt the sear to cause the sear to be released from
in Fig. 8, a slight clearance being left between
the hammer, but does not entirely remove the
the nose of the detent andthe pin to'prevent
bent nose 3" of the detent from the notch ‘ö’ but
binding. The projection 34 on the rear end of
does cause this nose to'come in Contact with the
lower wall of the notch 5’ so that the hammer ; "Í the sear has also been placed in line with a notch
3l in the triggerl s0 that when> pressure is put
is still held from firing by continued pressure
upon the trigger in a rearward direction it will
upon the trigger. When pressure upon ‘the trig
swing about the pin 30 to cause the walls ofthe
gerv is released, however, the lower wall of the
slot to engage with the projection 3'4 to tilt the
notch will have a camming action upon the nose
ofthe detent so >as to permit the hammer to be ‘Y 'Í sear to cause the sear to be released' from the
hammer, but does not entirely remove the bent
Y
nose 28’ of the detent from the path of the pin
Referring now to Figs. 5 to 10, inclusive, there
26" so that the hammer is still held vfrom firing
is shown a modification in which the mechanism
by continued pressure upon'the trigger. When
is rmore particularly intended for a pump gun
where 2| represents a portion of the Stock'of the 40 thev pressure upon the trigger is released, however,
released.
gun, 22' the barrel and 23 an intermediate me?
tallic housing to which the stock 2|> is connected
and» which supports the barrel and the firing
mechanism, this housing having connected there
vthe pin 26’y will have a camming action upon
the nose of the detent to permit the hammer to
be released, the lower wall of the nose 28’ being
inclined sufûciently to permit of this camming
action. In the present case the trigger and de
tent'V are gravity-operated and will be arrested by
the lower end ofthe triggerl coming in contact
to the usual finger guard 24 and also carrying
the breech bolt 25’ in which is located the usual’
-spring-pressedv ñring pin 25". The impact mem
with the finger guard’ 24.
'
‘
ber in the Vform of va hammer is indicated at 26,
In this modified arrangement it- is desirable
being pivotally mounted upon the stationary rod
or pin 26” which is supported by the housing ‘50 that means be provided to hold the sear 3| in in-Y
operative position when the trigger is being shift
23.' The trigger is indicated at 21 and in the
ed from one position to another and to also pro
present case has a detent 23' rigidly formed
vide means for locking the scar in engagement
therewith, the detent having a bent nose 28’ on
with lthe hammer for safety purposes. To this
the free end thereof. The trigger has anelon
gated slot 29 formed in each portion 2l' of its '55 end, there is provided a pin 40 which is mounted
for slidable movement in a lateral direction in
outer bifurcated end and extending through these
the side walls of the housing 23, this pin having
slots is a fixed pin 30 which is supported by the
three .positions of adjustment, being held in
housing. The sear for the hammer is represented
each position of adjustment by a spring-pressed
at 3|, this sea-r being pivotally mounted upon
the fixed pin 30 and has its rear end laterally off 60 detent 4| which is engageable with any one of the
notches 42, 43 and 44 in the pin, the detent being
set as indicated at 3|', which offset portion lies
mounted in one side wall of the housing 23. The
over the trigger. The triggerextends through
pin has an intermediate groove 45 and also over-i
an elongated slot 23’ in the removable bottom of
thel housing and is Vcapable not only of a rear Y , hanging this groove is a lip 46. When it is`Y de
ward; and forward movementin the slot 23’ to 'G5 sired to shift the trigger from one of its positions
-to theV other theV pin is moved axially Auntil the
the extent ‘allowed by the movement of the slots
lip 46 4overlies the end ’off the sear 3| so that the
29‘ in relation to the ñxed pin 3l! but also a swing
sear will be held in inoperative position with re
ing movement about the pin.
lation to the notch in the hammer 25, the detent
Referring now to Figs. 5` and 6, for straight
fire, with the hammer down, the ltrigger is pulled 70 4| then engaging in the notch 42. After the
trigger has been shifted the pin will be moved
until the detent engages .the central notch 43 so
the path of the hammer when'the> hammer is
that the sear will be permitted lto moveinto op- .
cocked,_ the rearward movement of the trigger
erative relation with the notch in the hammer>
being limited by the forward wall of, the slots 2?:
engaging the stationary pin 30. When the ham 75 after the hammer has been cocked. When it is
backwardlyv so as- to remo-ve the detent 2B out of
5
2,406,980
desired to lock the sear in its engaged position
with the notch in the hammer the pin is shifted
until the detent engages the notch 44, in which
position that portion of the pin occupied by the
notch ¿i2 Will move under the sear to lock it in
its engaged position with the notch in the ham
mer. The under side of the sear is provided with
6
pact member, a pivoted sear for holding said
impact member cocked, a trigger separate from
said sear for operating said sear having an elon
gated slot, a fixed pivot pin extending through
said slot, a detent rigidly connected with said
trigger to hold said impact member cocked when
the gun is to be used for release firing, said trig
a projection 41 so as to limit its movement into
ger having a movement limited by the contact of
the depression or groove 45 of the pin when the
one Wall of said slot with said pin to position said
sear has been moved to disengaged position with 10 detent in inoperative relation with said impact
the notch in the hammer and to strengthen the
member when the gun is to be used for straight
sear at the point where the lock-ing portions of
nre.
the pin engage it.
4. In a gun of the character described, an im
The mechanism hereinbefore described is set
pact member, a pivoted spring-pressed sear for
in either of the release ñre or straight fire posi
holding said member cocked, a trigger separate
tions by manual forward and rearward move
from said sear but operable atall times upon
ment of the trigger respectively. It is obvious
retraction of the trigger to release said sear from
that suitable indicia may be placed upon the fire
said impact member, a detent rigidly connected
arm adjacent the trigger so as to indicate the
with
said trigger to hold said impact member
firing position of the latter.
20 cocked when the gun is to be used for release lir
Having thus described my invention, I claim:
1. In a gun of the character described, an im~
pact member, a sear for holding said member
cocked, a detent for also holding said member
cocked under certain conditions, a trigger inte- »
grally connected with said detent, a mount upon
which the trigger and detent are movable in uni
son relative to the sear and impact member in a
fore and aft direction of the gun into and out of
engaging relation of the detent with the impact
member, but at all times maintaining engaging
relation of the trigger with the sear to disengage
the latter from the impact member under influ
ence of retractive pressure applied to the trigger
and in one such position of adjustment to simul
taneously engage the detent with the impact
member, from which it is subsequently disen
gaged to release the impact member upon relaxa
tion of retractive p-ressure previously »applied to
the trigger.
2. In a gun of the character described, an im
pact member, a. sear for holding said member
cocked, a trigger engageable with the said sear
to disengage the sear from the impact member
at all times when the trigger is retracted, a, de
tent rigidly connected to said trigger to hold said
impact member cocked when the gun is to be
used for release firing, said trigger having a lim
ited movement in a longitudinal direction of the
ing, said trigger having a limited longitudinal
movement of the gun to position said detent out
of operative relation with said impact member
when the gun is to be used for straight firing.
5. In a gun of the character described, an im
pact member, a releasable sear normally biased
toward operative position for temporarily holding
the impact member in cocked position, a com
bined trigger and detent, and means for slidably
and pivotally mounting said combined trigger
and detent in operative relation to said impact
member and sear, said detent being slidable for
wardly by the trigger into a position for engaging
and holding the impact member independently
of the sear when the latter is released by the trig
ger during release ñre position of the trigger and
said detent being slidably rearwardly out of the
path of movement of the impact member when
the trigger is in straight fire position for directly
releasing the sear.
6. In a gun of the character described, an im
pact member, a pivoted sear normally biased to
ward operative position for releasably holding the
impact member in cocked position, means for piv
otally mounting said sear, a combined trigger and
detent slidably and pivotally supported on the
sear mounting means and having a pair of spaced
notches therein, and means carried by the sear
for selectively engaging either of said notches
gun to position said detent out of operative rela 50 when the trigger and thereby the detent is shifted
tion with said impact member when the gun is to
to either its release nre or straight ñre position.
be used for straight firing.
CHARLES A. YOUNG.
3. In a gun of the character described, an im
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