Improvements in Magazine Guns.
Year: 1891

page_text: Date of Application, 30th June, 1891-Accepted, 26th Sept., 1891
COMPLEMIE DIDOTTICATION.
Improvements in Magazine Guns.
I, ROBERT DINSMORE, of Weston, in the County of Lewis, and State of West
Virginia, United States of America, Inventor, do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
This invention has relation to magazine firearms and to that class thereof which
are hammerless.
The objects of the invention are to provide an extremely simple and economically'
constructed firearm of the magazine pattern, the magazine, carrier-block and
firing-pin of which are all adapted to be operated by a single movement of the
trigger; to press and snugly hold the cartridge in the breech of the barrel previous
to and during the time of exploding of the cartridge, thereby preventing any
reaction caused by said explosion; and to provide certain other improvements all
as will hereinafter fully appear.
With said objects in view, the invention consists in certain features of con-
struction hereinafter specified and particularly pointed out in the claims.
Referring to the drawings:-
Fig. 1 is a side elevation of a magazine gun constructed in accordance with my
invention.
Fig. 2 is a longitudinal section, the interior mechanism being viewed in right side
clevation.
Fig. 3 is a similar section, the view being taken from the left side.
Fig. 4 is a similar view to Fig. 3, the piece being cocked and ready for
firing.
Fig. 5 is an enlarged perspective of the tumbler and trigger.
Fig. 6 is a detail of the carrier-block.
Fig. 7 is a detail of the pump.
Fig. 8 is a sectional view of the pump.
Fig. 9 is a transverse section through the piece and through the valve of the
pump.
Fig. 10 is a similar view in front of the carrier-block.
Fig. 11 is a detail in perspective of the plunger.
Fig. 12 is a detail in perspective of the connection between the plunger and
pneumatic feed device.
Fig. 1 is a longitudinal section of the magazine gun, showing a slight modifi-
cation in the interior mechanism, the latter being shown in side elevation and
the parts shown in the position they occupy after the elevation of the cartridge
from the magazine by the carrier-block and previous to inserting the same into
the breech.
Fig. 2 is a similar view, the parts being illustrated in the position they occupy
after the cartridge has been inserted and locked into position in the breech and just
previous to a liberation of the firing bolt or pin.
Fig. 34 is a similar view to Fig. 1A the piece having been fired and the trigger
liberated from the finger.
Fig. 4 is a transverse section on line a― of Fig. 1A,
Fig. 5 is a detail in perspective of the tumbler.
Fig. 6A is a detail in perspective of the sleeve operating-yoke.
Fig. 7 is a similar view of the trigger.
Fig. 8 is a detail in cross section on line -z of Fig. 5^.
Fig. 9 is a detail in elevation of the yoke-operating lever.

page_text: Fig. 1B is a vertical longitudinal section, (the parts being in position as assumed
by them immediately after firing and previous to the release of the trigger) of
another modification of my improved fire-arm.
Fig. 2 is a similar section after the release of the trigger and the ejection of the
empty shell.
Fig. 3 is a transverse section on the dotted lines of Fig. 1º.
Fig. 4 is a detail in perspective of the trigger.
Fig. 5 is a detail in perspective of the carrier-block.
Fig. 6 is a similar view to Fig. 1B, the parts being in the position assumed by
them in the act of loading.
Fig. 7" is a similar view, the parts being in the position assumed by them when
the piece is loaded and immediately before firing.
Fig. 8 is a detail in perspective of the cartridge-throwing lever.
Referring to the drawings, and more particularly to Figs. 1 to 12 thereof,
I designates the barrel of the piece to which is secured upon its underside in any
usual manner, the magazine 2, said magazine and barrel being connected to the
fore-arm 3. The rear ends of the barrel and magazine fit in suitable sockets
formed in the front end of the lock-frame 5, which latter is connected in the usual
imanner to the butt or stock 6. The lock-frame has passed therethrough a bearing-
bolt 7 upon which is pivoted the trigger 8.
The trigger 8 is provided with a rearward extension formed by a pair of
bearing-ears 9 and pivoted within the cars as at 10 is an arın 11 provided near its
upper free end with a pair of transverse bearing-lugs or trunnions 12, upon which
bears the bifurcated end 13 of the back-spring 14 of the piece, the rear end
of said back-spring being connected to the lock-frame by means of the usual
screw 15. The tendency of the spring 14 is to press the trigger
forward as
is usual.
Diametrically opposite the depending portion or finger of the trigger 8, the same
is provided with a pair of bearing-cars 16 in which is pivoted as at 17 a link 18,
the opposite end of which is pivoted as at 20 to the lower bifurcated portion 21 of
a tumbler 22 which latter is mounted for oscillation upon a bearing-bolt 23, passing
through the lock-frame at a point in rear and above the bearing-bolt 7. Diametrically
opposite the pivot 20 there is pivoted as at 24 to the tumbler 22 at its upper end,
a pawl 25 provided at its side with a liberating-pin 26 and between the ears in the
recess formed thereby there is interposed a light coiled spring 27 which serves to
elevate the free or engaging end of the pawl.
28 designates a partition which separates or divides the lock-frame into a front
and rear chamber and in the latter chamber is located the parts just described. In
suitable guide-openings 29 formed in the partition just mentioned and the rear wall
of the carrier-block opening, is the plunger 30, the underside of which is cut away
to form a shoulder 31 near the rear end thereof, which shoulder is normally
engaged by the spring-pawl 25. The plunger is provided at its front end with a
head 32 from the rim of which projects the firing-pin 33, and a pair of spring-
catches 34. A collar 35 is secured to the plunger by means of a set screw 36
and interposed between the collar and the partition 28 and encircling the
plunger is a coiled spring 37 the tendency of which is to project the bolt to
the front.
38 represents a latch provided at its rear end upon one side with a hub 39
loosely seated for oscillation in a countersunk recess 40 formed in the side wall
of the lock-frame.
The latch is provided with a curved slot 41 between its pivot and free end and
adapted to ride in the same is a pin 42 projecting from the adjacent side of the
tumbler 22. In advance of its cut-away portion or shoulder 31, the bolt is provided
with a groove or notch forming a forward shoulder 43 (see Fig. 11).
In an opening in the lock-frame in rear of the breech of the barrel is located the
vertical carrier-block 44, said block being adapted for vertical reciprocation in icar
of the barrel and the magazine. The carrier-block is vertically recessed upon its

page_text: upper side at 26 to form a cartridge-receiving portion and said recess is flared at
its front end as at 45 to receive the head 32 of the plunger.
46 designates the carrier-block elevating lever or arm and the same is pivoted as
at 47 in advance of the bolt 7 of the trigger. The rear end of the arm is extended
to form a tail 48 and the front end of said arm terminates in a head 49 which takes
A flat
loosely within a recess 50 formed in the rear wall or side of the block.
spring 51 is secured in position under the arm 46 and has its free bent end abutting
against a shoulder 52 formed upon the under edge of said arm and serving to
normally raise the free end of the arm. Above and below the tail portion 48 of the
arm 46 there project upper and lower cam lugs 53 and 54 respectively, said lugs
being designed to operate upon opposite sides of the tail portion 48 and are formed
upon the trigger. The underside of the carrier-block is provided with a channel 55
for the passage of the cartridges to the magazine and in said channel there is
mounted a flat spring 56, the free end of which is bent to form a gate 57 adapted
to cover the rear end of the magazine when the carrier-block is in a raised position
as in the act of firing or elevating a cartridge.
In Figs. 3, 4, 7, 8, and 9, 58 designates a pump-cylinder the inner side of which
is longitudinally slotted as at 59 and in the bore of the cylinder is mounted for
reciprocation a piston-head 60 which is actuated by and connected to a pump-
arm 61 of angular shape and rigidly connected with or forms a part of the
collar 35.
At the front end of the cylinder upon the upper side there is located valve-
An air-tube
chamber 62 in which is mounted for reciprocation a check-valve 63.
section 64 is connected by a collar 65 to a longer section of tubing 66, the front end
of which terminates within the front end of the magazine 2.
.
To load the piece, the same is inverted and the cartridges placed successively
into the cartridge-channel of the carrier-block, the gate readily yielding from a
slight pressure and permitting the cartridges to pass from the channel into the
magazine which in this way may be entirely filled. Pressure being removed from
the block and gate, they resume their normal positions as shown in Fig. 3. Taking
the parts in the position shown in Fig. 3 and supposing a cartridge to be upon the
carrier-block ready for elevation to the breech of the barrel, a pull to the rear
upon the trigger 8 serves, first to retract the plunger 30 by reason of the rearward
oscillation of the tumbler 22 which is in engagement with the plunger through the
medium of the spring-pawl 25. The oscillations of the tumbler it will be readily
observed, are obtained through the medium of the link 18 and against the tension
of the spring 14. As the trigger 8 is drawn to the rear the cam lug. 53 thereof
presses downwardly upon the tail 48 of the arm 46 and raises the carrier-block 44
to a point opposite the breech. In this position, the carrier-block is maintained
until the plunger has reached the end of its rearward movenient and is released
from connection with the spring-pawl 25. This releasing is secured by means of
contact of the pins 26 with the upper portion of the lock-frame which tends to
depress the pawl from below the plane of the shoulder 31 of the plunger and the
spring 37 throws the plunger forward and projects the cartridge into the bore of
the barrel. When thus projected, the spring catches 34 take over the flange
or rim of the shell of the cartridge and the firing-pin serves to explode the
same. When the spring-pawl 25 is liberated from connection with the bolt 30
the spring 14 serves to return the tumbler and trigger to their normal positions
and in so doing, the cam lug 34 takes under and elevates the rear end or tail
portion 48 of the hoisting-arm or lever 46 and consequently depresses the front
end of said lever and with it lowers the hoisting-block 44. As the plunger 30
is drawn to the rear as above described, so also is the plunger-arm and piston of the
pump, the latter to such an extent as to permit air to enter the pump-cylinder
through the front end of the slot in advance of the piston. When, therefore, the
plunger is released and is projected by its spring 37 to the front, in a similar
manner is moved the planger or pump-arm and the piston and by the latter the
air within the cylinder in advance of the piston is forced through the valve-

page_text: chamber and by the check-valve into the air-tube and from thence to the front
end of the magazine 2 in rear of the line of cartridges contained therein so that
a pneumatic feed is provided and the series of cartridges are by compressed air
forced toward the rear end of the magazine and the rearmost cartridge into the
carrier-block.
After the piece has been fired and the trigger again drawn to the rear, the fresh
cartridge in the carrier-block is elevated by the carrier-block but not before the
plunger by the pawl 25 has been retracted out of the path of the carrier-block.
When the bolt is retracted, the spring catches 34 serve to withdraw the empty
shell and the same is loosely suspended in the carrier-block passage and in the path
of said block, the movement of the latter serving to disengage the shell from the
catches and throw the same upward out of the gun. When this operation has
taken place, the parts it will be observed are in condition for a second discharge
and it will be apparent that the piece may be successively and as rapidly discharged
as the trigger is pulled. When the tumbler is oscillated in the act of retracting
the bolt and after said bolt has been released from connection with the pawl 25,
the free end of the latch 38 will, by reason of the curvature of the slot 41 be
elevated until it takes into the groove and abuts against the shoulder 43 thereof.
This elevation of the latch against the shoulder occurs just previous to the
explosion of the cartridge and hence said latch serves to prevent the plunger from
being thrown to the rear by the recoil of the shell. As soon however as the
pressure of the finger upon the trigger 8 is removed, the spring 14 serves to
oscillate the trigger forward and the tumbler in a similar direction and lower the
latch out of the groove and from behind the shoulder 43.
The rear end of the plunger is chamfered or beveled as at 67. A threaded
opening 68 is formed in the side of the lock-frame and threaded in said opening is
a conical set or adjusting-plug 69.
By means of this plug 69 it will be observed that the rear end of the bolt may
be adapted to travel a greater or less distance before the same shall release
itself from the spring-pawl 25. In this manner a most accurate timing may be
secured between the movements of the bolt and carrier-block.
Although herein shown and described in connection with a magazine rifle, it will
be apparent that the same principle and substantially the same construction may
be employed in magazine shot-guns.
It will be seen that I avoid the use of the usual spring for feeding the cartridges
from the magazine and substitute therefor a very perfect pneumatic attachment
which, however, it will be observed may be omitted if desired.
The modified construction of my gun shown in Figs. 14 to 94 of the drawings
differs only in certain details from the construction just described, the essential
features of construction being the same.
The differences reside in the means for holding the cartridge firmly in position
and locking the firing bolt in position during the explosion of the cartridge and
also in the construction and operation of the firing-bolt.
The sleeve 30 which is designed to reciprocate within the openings 29 has an
extension or arm 19 which at its rear extremity is notched as at 20 for a purpose
presently explained. The firing-pin or bolt 21 is here mounted for reciprocation
within the sleeve and is considerably longer than said sleeve as shown, the rear
extremity of the pin being reduced as at 22 and seated within a socket 23" within
the metal of the lock-frame. A spring 24 is coiled about the reduced portion
and is also located within the socket just mentioned, said spring serving to throw
the firing-pin in a similar manner as the spring 37 throws the sleeve.
In the recess in the rear side of the carrier-block terminates the front or free
end of the fulcrumed lever 46 operating in a slot 32" formed in the front partition
below the bearing therein.
The trigger 8 is provided with the upper and lower lugs or cars 53, 54, and the
lug or ear 43 (see Fig. 7). The lower bifurcated portion 21 of the tumbler 22
has the extension 46 and the upper side or edge of said tumbler is bifurcated as

page_text: at 47. Pins 50 are passed through the upper bifurcations near the front and
rear ends of the tumbler, the front pin having loosely mounted thereon the pawl 25
and the rear pin having loosely mounted thereon the longer pawl 52". Springs 27
serve to maintain the short ends of the pawls against stops 53 when said pawls
are not otherwise influenced. The front or short pawl has the laterally extended
pin which rides upon the underside of a curved track 55ª (see Fig. 4*).
The rear partition is slotted and provided with opposite grooves 57× Figs. 14,
24 34 in which is mounted for vertical movement a yoke 58 (Fig. 6A). The yoke
consists of the upper bifurcated end 59" the front edges of the bifurcations being
inclined as shown at 60" and the lower stem portion 61 being provided with a
slot 65 through which passes a transverse bearing-pin 66".
67* designates a yoke-operating lever pivoted upon a pin 68 near its middle.
The front end of the lever is provided with an elongated slot 67° which loosely
receives the transverse bearing-pin 66 of the yoke. The rear end of the lever is
forked or bifurcated as at 67 and loosely embraces the free end of the lower lug on
the trigger.
Above its point of fulcrum the lever is provided with a shoulder 67 against
which rests the bent lower end of a flat spring 63. The lower end of the spring
is adapted to be thrown above and below the bearing-pin of the lever and to act
upon the same in opposite directions in accordance with the position it occupies.
The operation of the construction just described is very nearly the same as that
of the first described construction. The magazine having been filled with
cartridges, the first movement of the trigger to the rear serves to operate the
pump and raise the carrier-block opposite the breech of the piece and close the
rear end of the magazine. The movement of the plunger of the pump injects
compressed air into the front end of the magazine in rear of the line of cartridges
so that when the trigger is liberated from the pressure of the finger, spring 14
serves to throw the same to the front and the lower lug on the trigger coming
into contact with the tail of the carrier-lever, said lever is rocked and depressed at
its front end so that the opening in the block registers with the magazine, where-
upon by reason of the compressed air pressing upon the line of cartridges, the rear
cartridge 12" is forced into the opening of the block. When the trigger is pulled,
the upper lug on same comes in contact with the tail of the carrier-arm and raises
said arm so that the cartridge is brought opposite to the breech of the piece.
At the same time the tumbler is oscillated to the rear and the longer pawl engaging
with the notch of the firing-pin takes said firing-pin or bolt to the rear against the
tension of its spring.
By the time that the bolt has reached its rearmost position, the short pawl has
engaged the notch 20 of the arm 19 of sleeve 30 and a further oscillation upon
the part of the tumbler serves to draw the longer pawl out of the notch 21" and
before such withdrawal the curved track 55 liberates the short pawl from the
sleeve and the spring 37 throws said sleeve, the throw of the sleeve being followed
immediately by the throw of the firing-pin. The movement of the sleeve forces
air into the rear end of the magazine as before described in rear of the line of
cartridges.
Previous to the liberation of the firing-pin and after the liberation of the sleeve,
lug 43" operating in the bifurcated end of lever 67* elevates the front end of the
lever and with it the yoke 58" so that its bifurcations take into the opposite
notches 70 of the sleeve and by reason of its inclined faces said yoke is wedged
within the notches and forces the sleeve toward the cartridge. In this manner the
cartridge is forced snugly into the breech and the sleeve is held against rebounding
from the explosion of the cartridge. As the sleeve 30 is retracted the ejecting
arms engage the rim of the cartridge shell and said shell is thrown out of the gun
in the manner before described with reference to the first construction.
Other means may be employed for withdrawing and liberating the sleeve 30
and bolt.
·
To provide a ready means for timing the short pawl so as to liberate the sleeve

page_text: described shown in Fig. 84 which is provided with an eccentric bearing 56" at one
end and the same is mounted in a perforation 57ª formed in the pawl. The pin
may be rotated so as to bring various portions of its cylindrical bearing surface
into contact with the track 55" so that it will be depressed at a proper time with-
relation to the liberation of the longer pawl. The pin may be held in adjustment
by a set-screw 54 passed through the pawl and resting upon the bearing portion of
the pin.
I will now describe the modified construction of my gun shown in Figs. 1" to 8"
of the drawings.
The rear end of the carricr-frame 1° embraces the grip-portion 2b of the stock
said grip-portion being provided with a magazine-passage 3 leading from the butt
and screwed into the rear end of the carrier-frame, which passage is continued
through said rear end as shown. Any means may be employed for automatically
feeding the cartridges through the magazine, such for instance as a spring or
pneumatic power as in the other constructions of my gun described.
A threaded socket 4 is formed at the front end of the carrier-frame and in the
same is threaded the rear reduced end of the barrel 1.
The carrier-frame is provided with an opening 6 upon its upper side partially
covered by an oblong-plate 7" the rear end of which is downwardly curved and
perforated and forms a bearing-eye 8" and in rear of same a flat shoulder 9. A
bearing-pin 10 passes through the walls of the carrier-frame near the rear end of
the opening 6 and also through the bearing opening 8. of plate 7° upon which
therefore, said plate is pivoted and is normally depressed below the opening by
means of a flat spring 11 secured to the rear end of the frame and having its front
or free end terminating under the bearing against the shoulder 9". Upon its under-
side, the, plate is provided with a lug 12 and with a downwardly curved bent
plate 13º.
The carrier-block 14 is of oblong shape and has formed upon its underside a
forwardly projecting supporting arm 15 which near its front end is provided with
an elliptical or elongated slot.16 through which and the walls of the carrier-frame
below the breech of the piece is passed a cylindrical bearing-pin 17" on which the
carrier-block has both a rotary and a reciprocatory movement, the latter being but
slight and for a purpose presently described.
Upon the underside of socket 4" is provided a cylindrical recess 18" in which is
seated a short lug 19. Opposite the lug 19" upon the upper side of the carrier-
block arm 15 is a short lug 20 and encircling the two lugs is a coiled spring 21
the tendency of which is to depress the hoisting-block which latter is guided, in its
movements by means of a pair of lugs 22° formed upon the opposite sides of the
block and riding in opposite ways or grooves 23 formed in the inner faces of the
opposite sides of the carrier-frame.
These grooves or ways are curved toward the rear of the piece a slight distance
and are formed upon a circle slightly eccentric with the pin 17" so that as the block
is depressed by the spring 21" the same does not move upon an exact circle but
slightly to the rear and the front edge or end of the slot 16 of arm 15" is brought
against the front face of the pin 17. In this manner the block, whose face is
square, may swing downward from its close contact with the rear or square end of
the breech.
In the front end of the breech-block a cylindrical opening 21" is formed in the
bottom of which is formed a smaller continuation of the opening 25". The front
end of the opening 24" is threaded and in the same is screwed a plug or fillet 26"
having a central perforation 27"; a head 28" is mounted for reciprocation in the
cylindrical opening 24" and is provided at its front end with a firing-pin 29 designed
for movement in the perforation 27 and at its rear side with a pin 30 designed for
movement in the opening 25" and said pin 30' being encircled by a small coiled
spring 31 seated in the opening 25" and interposed between the bottom of the same
and the rear side of head 28". The upper side of the carrier-block is provided with

page_text: a recess 32" which in form approximates a cartridge but is shallow so that when
occupied by a cartridge a portion of the cartridge will be above the block. Small
trunnions 33 project from the opposite sides of the head 28" and extend laterally
through parallel slots 34 formed in the sides of the carrier-block. The inner faces
of the walls of the breech-frame are provided with opposite triangular cam-lugs 35"
the upper edges of which are provided with shallow notches 36. In the vertical
movement of the carrier-block, the trunnions traverse the three faces of the cam-
lugs 35 and thus it will be apparent that the firing-pin and its adjuncts will be
reciprocated and released.
:
37 designates a bell-crank shaped trigger one branch of the bell-crank forming
a pull 38. The remaining branch is wedge-shaped and provided with a slot or
opening 39 in its edge at each side of which at its rear end are formed perforated
lugs or ears 40".
The trigger is of circular shape at its centre and is centrally perforated as. at 41"
and mounted upon a transverse bearing-pin 42" extending through the walls of the
carrier-frame. The periphery or edge of the circular plate is provided with the
cam-slot 43 and in the same terminates the rear or free end of a flat spring 44°
secured at its front end by a screw 45" passed through the guard 46 the spring,
and into the carrier-frame upon its underside. The spring is of such length as not
to engage with the slot when the trigger is near or at its rearmost position and
therefore exerts but a slight tension upon the trigger to return the same and what
pressure does occur when the trigger is in this position is by reason of the fact that
the free end of the spring is in front of a vertical axial line through the trigger
bearing.
When, however the trigger has rotated to such a degree as to engage the cam-
slot, the full force of the spring is felt and the trigger promptly returns to its
normal position and with it certain mechanism hereinafter described. A pair of
perforated lugs 47 are formed upon the underside of the carrier-block and pivoted
as at 48h to the lugs is a link 496 the lower end of whieli rests in the slot 39" of the
trigger and is pivoted as at 50 between the lugs 40 thereof. 51" designates an
ejector-lever, the lower end of which is laterally bent to form a lug or projection 52"
and the upper end of which takes in a recess 53 formed in the breech of the barrel
and is provided with an ejecting-finger 54' adapted to take in front of the rim of a
cartridge-shell 55.
The ejecting-lever is pivoted or fulcrumed near its lower end as at 55ª and the
lug 52 of the lever is in the path of and adapted to be struck by a lug 56' upon
the side of the carrier-block arm 15° so that with a lowering of the carrier-block
occurs a tilting of the extractor-lever and consequently the withdrawal or extraction
of a cartridge shell in the breech or barrel. 57' designates a cartridge-throwing
hammer or lever and the same consists of a shank portion 58 pivoted upon a
bearing-pin 59b passed through the lower end of the lever and the opposite walls of
the carrier frame and at its upper end in a head 60°. The length of the head
agrees with the distance from the rear end of the carrier-block to the inner surface
of the rear wall of the breech-frame and the front face of the head is inclined
contrary to the rear wall of the block so that said faces meet and form a tight
wedge or backing for the rear edge of the cartridge when in the barrel. The
upper side of the head is provided with a longitudinal slot 61° and the same com-
municates with an inclined bore 62 passing longitudinally through the head and at
its upper rear end a lug or rib 63 is provided, the latter extending above the
surface of the head. 64 designates a flat spring, the rear end of which is interposed
between the rear end of the guard and through the guard, spring and breech-frame
passes a screw 65°. The front end of the spring terminates under a shoulder 66"
formed upon the lower end of the cartridge-throwing lever in rear of its pivot. In
front of its pivot, the same is provided with an upper and a lower inclined cam
face 67 and 68 designated to be operated upon by the free end of the wedge-
shaped branch of the bell-crank trigger.

page_text: .
This completes the construction of the gun and the operation of the same is as
follows:-
Taking the piece in the position shown in Fig. 1" which is as assumed by the
parts immediately after firing and before the trigger is released by the finger, a
releasal of the trigger causes the same to swing to the position shown by dotted
lines in Fig. 1B and the parts to assume the position shown in Fig. 2B.
The parts reach the position shown in Fig. 2B by reason of the springs 21°
and 44 and it will be apparent that the support of the cartridge being removed
from under the plate 75, the spring 11 depresses the front end of the plate so that
it is below the breech.
As the carrier-block descends the lug 56' of its arm strikes the lug 52 at the
lower end of the extractor so that the upper end is suddenly withdrawn from
the recess 53 and the empty shell thrown up the inclined plate 7b and out of the
opening 64. A pull upon the trigger gives a slight upward movement to the
carrier-block and the free end of the upper branch of the bell-crank lever comes in
contact with the lower cam-face 68 of the cartridge-throwing lever 58.
This causes said lever 58" to swing to the rear and assume a vertical position out
of the path of the carrier-block over which it was swung by its spring 64³ at the
time of the lowering of the carrier-block.
After the cartridge-throwing lever has been pressed to the rear and the end of
the bell-crank trigger passed beyond the cam-face 68" said lever is momentarily
released by reason of the intervening space between the two cam-faces 67 and 68
and at the time that this intervening space is reached by the bell-crank lever the
carrier-block has been elevated to a point directly opposite the breech of the
barrel; so that the spring 64 suddenly throwing the lever 58 causes its front
face to come suddenly into contact with the rear end of the cartridge and throw
the same into the barrel cither partially or wholly, such being immaterial as will
hereinafter appear.
The curved plate 13 has previous to this time extended down
in front of the cartridges so that the advance cartridge of the series has been
prevented from being forced out by the pneumatic, spring or other pressure in rear
of the same.
When the sudden throw, however, of the lever takes place, the lug 63' thereof
suddenly strikes the lug 12 upon the underside of the plate 7b and the plate is thus
momentarily elevated and the cartridge released so that it is forced through the
bore 62 of the head of the lever and over into the shallow recess 32 of the
carrier-block and by the time it has reached this point the shock of the blow upen
the plate 7" has been overcome and said plate returned by the spring 11' so that it
rests upon the cartridge lying in the carrier-block by which it is supported.
The last portion of the pull of the trigger elevates the carrier-block and at the
same time by reason of the inclined faces between the carrier-block and the head of
the lever, said carrier-block may properly be said to be wedged into position and
in so doing forces the cartridge to its seat in the breech of the piece.
At this time, the trunnions 33 have passed up the rear nearly straight face of
the cam lugs 35" and have about reached the upper edge of the cam. Here
pressure upon the trigger being removed, they may be maintained in that they take
into the shallow notches 36" in the cam-lugs or if desired, the pull of the trigger
may be continued.
In either instance, however, when the trunnions have reached
the shallow recesses 36 it requires but the slightest imaginable pull to explode the
cartridge and carry the trunnions out of the shallow recesses so that regardless of
the fact that the entire operation is accomplished by the single movement of the
trigger yet a practically light pulling or what is commonly known as hair-trigger
gun is secured.
By increasing the shallow notches of the cams, the pull may be more or less
increased as may be desired.
Either of the constructions of gun hereinabove described may, in principle, be
embodied in single-shot rifles, shot-guns or pistols with but very slight changes.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
1. In a magazine-gun, the combination with a reciprocating plunger and means
for operating the same of a pneumatic cylinder, a tube connecting the same with the
front end of the magazine, a piston mounted in the cylinder and an arm actuated by
the plunger and connected with the piston, substantially as described.
2. In a magazine-gun, the combination with a reciprocating plunger, means for
operating the same, of a pneumatic cylinder, a tube connecting the same with the
front end of the magazine, a valve located in the cylinder opposite its connection
with the tube a piston mounted in the cylinder in rear of the valve and an arm
connected with the plunger and with the piston, substantially as described.
3. In a magazine-gun, the combination with a reciprocating plunger and means
for operating the same of a pneumatic cylinder longitudinally slotted for a portion
of its length and provided at its front end with a valve-chamber having a check-
valve, a piston mounted for reciprocation in the cylinder, an arm connecting the
same with the plunger and passing through the slot of the cylinder and adapted to
move the piston in rear of the end of the slot and a pneumatic tube leading from
the upper end of the valve-chamber to the front end of the magazine, substantially
as described.
4. In a gun, the combination with a reciprocating plunger and a spring for
throwing the same, said plunger being provided with a shoulder, of an oscillating
tumbler provided at its upper end with a spring pawl adapted to engage said
shoulder and a trigger pivotally mounted below the tumbler and a loose connection
between the tumbler and trigger, substantially as described.
5. In a gun, the combination with a reciprocating plunger and means for
operating the same, said plunger being provided with a shoulder, of a pivoted
locking-latch and devices for operating the same simultaneous with the movement
of the plunger and so as to take in rear of said shoulder, substantially as described.
6. In a gun, the combination with a reciprocating plunger and means for
operating the same, of a pivoted locking-latch having a curved slot, an oscillating
tumbler having a pin engaging the slot and means for operating the tumbler,
whereby the latch is thrown against the stop on the plunger, substantially as
described.
7. In a gun, the combination with a reciprocating plunger and a coiled spring
for throwing the same in one direction, said plunger being provided on its underside
with front and rear notches of an oscillating tumbler provided at its upper end
with a spring-latch for engaging the rear notch of the plunger, a pivoted latch
having a slot adapted at its front end to engage the forward shoulder and a pin
projecting from the tumbler and riding in the slot and mechanism for liberating the
pawl and oscillating the tumbler and for elevating the free end of the latch in
rear of the front notch subsequent to a liberation of the pawl, substantially as
described.
8. In a gun, the combination with a reciprocating plunger and a spring for
throwing the same, of means for retracting the plunger against the tension of its
spring and releasing the same and means for temporarily locking said plunger
against retraction, simultaneous with the throw of the plunger, substantially as
described.
9. In a gun, the combination with a reciprocating plunger and an oscillating
tumbler having a spring pressed pawl for engaging the shoulder on the plunger, of
means for oscillating the tumbler and for adjusting the rear end of the plunger,
substantially as described.
10. The combination with the reciprocating plunger, the rear end of which is
beveled and provided with a notch or shoulder, said beveled end projecting through
an opening in the lock-frame of the gun, of an oscillating tumbler and means for
operating the same, a spring-pressed pawl connected to the tumbler and adapted to
B

page_text: engage the notch or shoulder of the plunger and provided with laterally projecting
liberating pins adapted to strike against the inner surface of the lock-frame, and
an adjustable plug, threaded in the aforesaid opening below the beveled end of the
plunger substantially as described.
11. In a magazine-gun, the combination with the lock-frame having the carrier-
block passage, the carrier-block mounted therein, the pivoted carrier-arm connected
at its front end to the block and at its rear end extended beyond its pivot to form
the tail, of the pivoted trigger having opposite cam-lugs adapted to actuate said
arm by taking against the upper and lower sides of the tail portion, substantially
as described.
12. In a magazine-gun, the combination with a plunger, a spring for throwing
the same in one direction, said plunger being provided with front and rear notches
an air-cylinder having a valve, a tube leading from the valve-chamber to the
magazine, a piston head mounted in the cylinder and a plunger-arm connecting
said head to the plunger, a pivoted oscillating tumbler, a pivoted pawl mounted in
the upper end of the tumbler and spring-pressed into connection with the rear
notch of the plunger and means for liberating said pawl, a latch pivoted at one
side of the tumbler and provided with a cam-slot to receive a pin projecting from
the tumbler whereby said latch is adapted to be thrown against the rear notch
subsequent to the release of the plunger, a carrier-block mounted in advance of
the plunger, a carrier-block arm pivoted in the lock-frame and terminating in rear
of its pivot in a tail portion, a trigger pivoted below the tumbler a link loosely
connecting the upper end of the trigger with the lower end of the tumbler, said
trigger being provided with a pair of cam-lugs for operating upon opposite sides of
the tail portion of the said carrier-block arm or lever, an arm projecting from the
rear side of the trigger and a spring secured to the frame and having its free end
resting upon the said arm, substantially as described.
13. In a magazine-gun, the combination with a carrier-block, an arm for
operating the same and a plunger, of a trigger connected with and operating said
arm and plunger-operating devices connected to and actuated by the trigger,
substantially as described.
14. In a magazine-gun, the combination with a reciprocating plunger and a
carrier-block, of a pivoted trigger and trigger-operated devices for operating the
block and plunger, substantially as described.
15. In a gun, the combination with a plunger, a spring for throwing the same in
one direction, said plunger being provided with front and rear notches, a pivoted
oscillating tumbler, a pivoted pawl mounted in the upper end of the tumbler and
spring-pressed into connection with the rear notch of the plunger and means for
liberating said pawl, a latch pivoted at one side of the tumbler and provided with
a cam-slot to receive a pin projecting from the tumbler whereby said latch is
adapted to be thrown against the rear notch subsequent to the release of the
plunger, a trigger pivoted below the tumbler, a link loosely connecting the upper
end of the trigger with the tumbler and a spring for supporting the trigger, sub-
stantially as described.
16. In a gun, the combination with a reciprocating sleeve, a firing-pin mounted
in the sleeve and means for independently throwing the sleeve and pin, of means
for locking the sleeve after its throw against recoil, a pivoted trigger and devices
connecting said trigger with the locking means, substantially as described.
17. In a gun, the combination with the reciprocating sleeve, a spring for
throwing the same, said sleeve being provided with opposite notches and a bolt
mounted in the sleeve for reciprocation and a spring for throwing said bolt, of a
trigger pivoted below the sleeve, devices operated by the trigger for simultaneously
withdrawing the sleeve and bolt and successively liberating the same, a recipro-
cating yoke mounted below the sleeve and adapted to embrace the same at its
notches, a lever pivoted between the yoke and the trigger and at one end to the
yoke and having its tail extended in the path of the trigger, substantially as
described.

page_text: 18. In a gun, the combination with the reciprocating sleeve extended at its rear
end to form an arm, having a notch, a firing-bolt mounted in the sleeve and also
provided with a notch, said sleeve being provided with opposite notches, of a yoke
mounted for sliding below the sleeve and adapted to embrace the same at its
notches, a lever for operating the yoke, said lever having its rear end extended in
the path of the trigger, substantially as described.
19. In a gun, the combination with the reciprocating sleeve, the spring for
throwing the same, said sleeve terminating at its rear end in an extension arm
having a notch and the reciprocating bolt or pin mounted in the sleeve, provided
with a notch and a spring for throwing the pin, of a tumbler pivoted below the pin
and provided with a pair of pawls spring-pressed into engagement with the notches
of the pin and the arm, means for successively depressing the pawls, a pivoted
trigger, connections between the same and the tumbler and a spring for the trigger,
substantially as described.
20. In a gun, the combination with the lock-frame having the front and rear
partitions, the latter having the guides formed in a slot therein and each provided
with bearings, the sleeve mounted in the bearings and provided with opposite
notches, the outer walls of which are inclined, said notches registering with the
ways and said sleeve being provided with a rearwardly-extending arm having a
notch and a bolt mounted for reciprocation in the sleeve and having a notch, of a
track located at one side of the bolt, springs for throwing the sleeve and bolt,
a tumbler pivoted below the bolt and provided with a pair of pawls, one having a
pin extending into the track, the formation of which is such as to depress the pin,
a pivoted trigger, a link connecting the same with the tumbler, a spring for
depressing the trigger, a yoke mounted for reciprocation in the guides of the
partitions and having the front faces of its bifurcations inclined to operate against
the inclined walls of the notches, substantially as described.
21. In a gun, the combination with the reciprocating spring-pressed sleeve and
firing-pin, the former provided with a notched arm, and the latter with a notch, of
a tumbler pivoted below the sleeve and provided with a short pawl adapted to
engage with the notched extension of the sleeve and a long pawl adapted to
engage with the notch of the firing-pin, a pin extending from the short pawl into a
track formed in the lock-frame at one side of the same and a trigger connected
with and adapted to oscillate the tumbler, substantially as described.
22. In a gun, the combination with a reciprocating sleeve, a spring for throwing
the same, said sleeve being provided with an independently reciprocating firing-
pin, a spring for throwing the same and at opposite sides of the sleeve with
notches, of a vertically sliding yoke having wedge-shaped faces for engaging the
notches, a lever loosely connected to the yoke at the front end terminating at its
rear end in a bifurcation and opposite its fulcrum provided with a shoulder, a flat
spring secured to the frame and having its lower bent end bearing upon the
shoulder, a trigger pivoted in rear of the lever and provided with a lug, for
operating the same, and engaging with the lever at its bifurcated end, substantially
as described.
23. In a gun, the combination with the reciprocating sleeve, a spring for
throwing the same and an arm extending from the sleeve and provided with a
notch, a firing-pin mounted in the sleeve and provided with a notch, of an
elliptical tumbler, the upper edge of which is bifurcated, a long and short pawl
pivoted therein and provided with extensions for resting against stops formed on
the tumbler, springs for raising the pawls into engagement with the notches,
means for successively liberating the long and short pawls and a trigger pivoted
below the tumbler and at its upper end loosely connected with the tumbler,
substantially as described.
24. In a gun, the combination with a reciprocating sleeve or its equivalent
provided with a notch, of a tumbler pivoted under the sleeve and provided with
means for operating the same, a pawl pivoted in the tumbler and a pin having a

page_text: concentric end mounted in the pawl and extending therefrom and means for
setting the same, substantially as described.
25. In a gun, the combination with a hinged carrier-block and devices for
operating the same, of a pivoted cartridge-throwing lever and devices for operating
the lever when the carrier-block is in line with the bore of the gun, substantially
as described.
26. In a gun, the combination with the carrier-frame, the barrel secured at the
front end of the same, of a swinging carrier-block having an inclined rear face,
means for operating said block and a pivoted cartridge-throwing lever having an
inclined front face in contradistinction to the rear face of the block and means for
operating the lever and wedging the same between the block and the rear wall of
the carrier-frame, substantially as described.
27. In a gun, the combination with the carrier-frame provided at its front end
with the barrel, of a hinged carrier-block, a trigger for raising and lowering the
same and a cartridge-throwing lever pivoted below the block and having a head
fitting between the rear end of the same and the rear wall of the frame,
substantially as described.
28. In a gun, the combination with the carrier-frame and the swinging carrier-
block, of a trigger pivoted below the same and connected with the block and
devices for throwing the cartridge from the block into the breech of the gun,
substantially as described.
29. In a gun, the combination with the carrier-frame and the barrel, of a
carrier-block adapted to receive a cartridge and provided with an arm having an
elongated opening, a pin passed through the opening and permitting of a rotary
and reciprocatory movement of the block, means for throwing the cartridge from
the block and a trigger for operating the block, substantially as described.
30. In a gun, the combination with the carrier-frame, the hinged carrier-block
and the cartridge-throwing lever pivoted in rear of the same, spring-pressed and
provided with separated cam-faces, of the bell-crank shaped trigger, one branch
forming the pull, the other operating against the cam-faces in rapid succession and
a link connecting said other branch with the carrier-block, substantially as
described.
31. In a gun, the combination with the carrier-frame, the barrel secured to the
front end of the same and provided with a recess at its breech, of a pivoted lever
having one end terminating in the recess of the breech and forming an extractor
and at its opposite end provided with a lug, a carrier-block pivoted to one side of
the lever and adapted to actuate the same at each depression of the block and
means for operating the block, substantially as described.
32. In a gun, the combination with the carrier-frame, the barrel secured to the
front end of the same and provided with a recess at its breech, of a pivoted lever
having one end terminating in the recess of the breech and forming an extractor
and at its opposite end provided with a lug, a carrier-block pivoted to one side of
the lever and adapted to actuate the same at each depression of the block and a
trigger connected with the block for operating the same, substantially as
described.
33. In a gun, the combination with the carrier-frame having an opening at its
upper side and a barrel secured at the front end of the frame, of a plate pivoted
in the opening, a spring for depressing the same below the barrel, a carrier-block
hinged below the barrel and an ejecting-lever having its ejecting end lying in a
recess formed in the breech of the barrel and at its lower end bent into the path of
the block, substantially as described.
34. In a gun, the combination with the carrier-frame provided with opposite
rearwardly curved grooves or ways, of a loosely pivoted carrier-block provided with
laterally extending lugs riding in the grooves which grooves are eccentric with
relation to the pivot of the carrier-block, substantially as described.
35. In a gun, the. combination with the carrier-frame, of the carrier-block pivoted
therein and provided with a hollow bore, a firing-pin spring-pressed and mounted

page_text: within the bore and provided with a trunnion extending between the slot and beyond
the same and a substantially-triangular block or track against which the trunnion
operates so as to withdraw the pin at the raising of the block and a trigger for
operating the block, substantially as described.
36. In a gun, the combination with the carrier-frame, the hinged carrier-block
having a bore and opposite slots formed in the wall of the bore, of a trigger
pivoted to and operating the block for raising and lowering the same, a firing-pin
mounted in the bore and provided with trunnions extending through and beyond
the slots, a spring for throwing the pin, an opposite triangular track formed upon
the inner sides of the carrier-frame against which said trunnions operate to withdraw
and liberate the firing-pin, substantially as described.
37. In a gun, the combination with the carrier-frame, the carrier-block hinged
therein and provided with a hollow bore and opposite slots, a cylindrical head
mounted in the bore and having trunnions extending through and beyond the slots
and provided at its front end with a firing-pin and at its rear end with a guide-
pin, coiled spring encircling the guide-pin and a perforated fillet threaded in the
front end of the bore and receiving the firing-pin, of a trigger pivoted within the
frame and loosely connected with and adapted to operate the block and opposite
triangular cams formed upon the inner sides of the frame against which the
trunnions operate, said cams being provided upon their upper sides with shallow
grooves for a retention of the trunnions, substantially as described.
38. In a gun, the combination with a pivoted carrier-block provided upon its
upper side with a shallow cartridge-receiving recess, and a pivoted trigger for
operating the block, of a magazine arranged in rear of the block, a pivoted
cartridge-throwing lever located between the magazine and the block and
provided with a bored head for the passage of the cartridges from the magazine
to the block, means for detaining cartridges within the head and means for tilting
said lever when the carrier-block is opposite the breech of the gun, substantially as
described.
39. In a gun, the combination with the carrier-frame having an opening at its
upper side, a hinged cover for the same, a spring for normally depressing the cover,
a pivoted carrier-block provided upon its upper side with a shallow recess for the
reception of a cartridge and normally pressed upon by the pivoted cover, of means
for raising and lowering the carrier-block, a pivoted cartridge-throwing lever
adapted to strike the plate and raise the same above the carrier-block, means for
rearwardly pressing the lever and a spring for throwing the same so as to strike the
cover and the cartridge upon the block, substantially as described.
40. In a gun, the combination with the carrier-frame provided at its front end
with a threaded socket having a cylindrical recess upon its under side, and a barrel
threaded in the socket, the recess being provided with a lug, of a pin passing
through the frame below the socket, a carrier-block having an arm provided with
an elongated slot for the reception of the pin and opposite the lug of the socket
having a similar lug, a spring interposed between the arm and the socket and
encircling the two lugs, a trigger pivoted in the frame, a link connecting the same
with the block and a spring for throwing the trigger, substantially as described.
41. In a gun, the combination with the carrier-frame, a swinging carrier-block,
of a trigger pivoted below the block, a link pivoted to the block and eccentrically
pivoted to the trigger, said trigger having a slot of cam-shape formed in its edge
at one side of the centre and a flat spring secured to the frame and taking into
said slot when the trigger is at rest, substantially as described.
42. In a gun, the combination with the swinging carrier-block having a cartridge-
receiving recess upon its upper side, a spring for depressing the block and a bell-
crank trigger pivoted below the block and a link connecting the same with the
block whereby the trigger is adapted for elevating the block and a cartridge-
throwing lever pivoted in rear of the trigger and provided with separated cam-
faces operated upon by one branch of the bell-crank trigger, a spring for throwing
the lever, said lever being provided with an upper bore, a cartridge passage located

page_text: in rear of the lever and communicating with the bore, an opening formed in the
upper side of the carrier-frame, a spring-pressed plate or cover mounted therein
and having a depending plate adapted to take into a slot in the upper end of the
lever and prevent the escape of the cartridges from the passage and a lug formed
on the upper end of the lever and one upon the plate whereby a throw of the lever
causes an elevation of the plate so as to liberate the cartridges, substantially as
described.
Dated this 30th day of June 1891.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.