US2634548A - Toy paper bursting six-shooter - Google Patents

Description

April 14, 1953 o. E. LANGos 2,634,548

TOY PAPER BURSTING SIX-SHOOTER Filed Sept. 6, 1949 2 SHEETS-SHEET l 0 2 w l Jl, 52

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TOY PAPER BURSTING SIX-SHOOTER Filed Sept. 6, 1949 72 SHEETS-SHEET 2 IN VEN TOR.

ZIQR 03, BY

Patented Apr. 14, 1953 2,634,548 'I OY PAPER BURSTING SllX-SIVIOO'I'ERI` Otto E. Langes, Chicago, Ill. Application September 6, 1949, Serial No. 114,113

(Cl. dii-V195) 13 Claims'. 1

This invention relates to paper bursting toy guns Yof the type in which a movable breech intermittently seals a paper strip against the mouth of a cylinder lstructure within which a piston works for compressing air to burst the paper.

lIn constructing paper bursting guns of the above type, it has been the practice to provide a multi-part link assembly for actuating the piston rod and the breech, as well as the paper feeding means. In assembling the gun care must be taken that the various parts of the link mechanism are properly aligned with each other and accurately positioned in the gun housing. This requires a substantial amount of time and skill on the part of the operator. Furthermore, it has been customary to connect the trigger to the link system by a pivot pin or rivet, and pivotally mount the trigger on the gun housing thus requiring careful alignment of the link system with the gun housing.

The production of paper bursting guns has presented another important problemover the years, and even generations of children, that such toys have been available. The true pistol conguration, or western type of gun, has been the universal favorite of the children, and they always prefer an automatically operated toy gun to a single shooter. However, no acceptable toy paper-burster-gun of this exact outside shape and appearance has ever been produced due to the difficulty of providing mechanism which would produce the actions for an automatically operated paper-burster in a housing of this shape, and of a size and weight to be handled by a child.

A general object of the present invention is to provide an improved paper bursting gun which enables a more accurate and rapid assembly of parts to be accomplished, by a less skilled operator or assembler than heretofore was required.

Another object is to provide an improved paper bursting gun construction Which permits greater tolerance in the positioning `and alignment of the parts.

Another object is to provide mechanism that can be provided and assembled at a relatively low cost. i

A further object is to provide an improved link mechanism for a'paper bursting gun of the variety described above, wherein a single slid- I able member performs the same function as several interconnected links in conventional gun assemblies, thereby eliminating the problem of alignment among a pluralityof parts.

A still further object is to provide a ,paper burning 110i/ elle resembling a Western Pietel in its appearance, with the movable breech of the gun simulating the hammer employed in this type of pistol, and with mechanism'w'hich provides automatic operation for intermittent but continuous paper bursting by merely pulling the trigger.

A feature of the invention is the provision of a cooking and ring mechanism in which a single, horizontally reciprocable member has a central portion adapted to be cammed by the trigger, and end portion for an operative connection to both actuate and release the piston rod of the toy gun, and an opposite end portion for an operative connection to actuate the breech.

Another feature is the provision of a novel breech mechanism which simulates the hammer of a western pistol, said breech mechanism having a lost-motion connection to the aforesaid reciprocable member to afford the necessary retarding actionof the breech and to protect the gun mechanism from damage if an attempt'is made to force the action of the breech.

Still another feature is the provision of an improved breech and link mechanism which can be preassembled as a unit before being mounted in the gun housing.

The foregoing and other objects and features of the invention will be better understood from a study of the following description thereof taken in connection with the accompanying drawings, wherein:

Fig. 1 is a side elevational view of a paper bursting gun constructed in accordance with the principles of the invention;

Figs. 2 and 3 are longitudinal sections through the gun, illustrating the moving parts thereof in different steps of their operation;

Fig. 4 is a side elevational View of a subassembly in the gun;

Fig. 5 is an elevational view looking at the interior of a gun housing part; and

Figs. 6 and 7 are cross-sectional views taken on the line 5 6 and 1 1, respectively, in Fig. 2.

In practicing the invention, a paper bursting top gun is built to resemble a western pistol, with a breech in the form of a simulated hammer being pivoted on the housing in back of a simulated cartridge chamber. Within the housing, in front of the breech, there is mounted a cylinder assembly having an exposed mouth portion across which a paper strip is fed. A piston working within the cylinder has a piston rod which extends forwardly therefrom through the gun barrel. A coiled compression spring in the front end of the barrel tends to urge the'piston rod rearwardly. VThe gun.l differs from the l'present commercially available paper bursting guns in that the trigger is not positively linked to the means for actuating the piston rod and the breech. The trigger is operated in the fashion of an ordinary pistol and the mechanism acts to automatically cock the gun, feed the paper, and fire the gun in repeated bursts upon repeated pulling of the trigger. In the present instance the actuating means referred to comprises an intermediate member, referred to herein as a key member, movable in a path paralleling the piston rod, with the key member and the trigger having cooperating edge portions adapted to have camming engagement with each other. At its rear end the key member is connected to the breech through a lost-motion linkage. A lever subassembly has a rst lever which is fulcrumed on the gun housing and a second lever which is fulcrumed both on said first lever and on said key member. The second lever has a pin adapted to seat in a notch in the edge of the piston rod. A spring biases the second lever toward the piston rod and also biases the key member toward a rearward position thereof. As the trigger is pulled, the key member is cammed forwardly causing the second lever to push the piston rod forwardly. A paper feeding pawl actuated by the trigger moves the paper strip to bring an unbroken area thereof over the cylinder mouth, and as the key member nears the end of its forward travel, taking up the lost-motion between this member and the breech, the breech moves ahead to seal the paper against the cylinder mouth. The key member ultimately strikes a pin anchored in the housing, which pin bears against a cam portion at the front end of the key member to swing the lever subassembly and disengage the pin from the notch in the piston rod. The piston rod then is snapped rearwardly by its spring, building up air pressure within the cylinder to rupture the paper which has been sealed against the cylinder mouth by the breech.

Referring now to the drawings the gun therein illustrated has a two-part die-cast housing I (the exterior of which is shown in Fig. l) with a forwardly extending barrel portion I2, a simulated cartridge chamber I4 and a grip portion I 6. The gun resembles a western pistol in its configuration, and like that type of pistol, it has a simulated hammer I8 pivoted on the housing I0 and projecting upwardly to the rear of the cartridge chamber I4. As will be explained subsequently, this simulated hammer I8 is actually a breech member adapted to form a rupturable seal with a paper strip employed in the gun. The trigger 2G of the gun is, in the present instance, elongated so that it extends below the trigger guard 22. This enables the trigger to be grasped by two ngers and affords greater leverage, for the purpose explained subsequently.

Each of the two mating parts of the gun housing IU has a semi-cylindrical cavity 24 (Fig. 5) therein at the rear end of the upper part of the gun. A sheet metal cylinder 26 is positioned in this cavity in horizontal alignment with the gun barrel I2. A piston 28 works within the cylinder 25. A fiat piston rod 30 secured to the piston 28 extends forwardly from the cylinder 26 through a portion of the barrel I 2. The piston rod 30 4terminates in a disc 32, and a coiled compression spring 34 is mounted in the barrel I 2 between the disc 32 and a muzzle cap 36 on the front end of the barrel I2.

The cylinder 26 terminates at its rear end in a mouth having an inwardly turned annular lip 38. A rubber grommet 4u mounted on the, lil? 38 aords a resilient annular cushion against which a paper strip 42 may be sealed by the movable breech or simulated hammer I 8. The grommet 40 also serves to hold a flat plate 44 against the mouth of the cylinder 25. The paper strip 42 is fed from a roll 46, Figs. 2 and 3, positioned within a cylindrical cavity 48 in the grip I6. A paper guideway 50 extends through the gun housing from the cavity 48 upwardly in vertical alignment with the outer end of the grommet 48. The paper strip 42 is intermittently fed upwardly, clamped against the grommet 4U in sealing engagement therewith, and ruptured by air pressure within the cylinder 26, in the manner hereinafter explained.

A swinging plate or disc 5I, Fig. 1, mounted on the outside of the grip I6 normally covers the cavity 48 in which the paper roll 45 is disposed. When a new roll is to be inserted, the cover 5I is swung aside, and is then moved back to its initial position when the roll is in place. The cover 5I is held by small detent projections or in any other suitable manner.

Within the gun housing I0, below the cylinder 26, there is disposed a horizontally movable flat member 52, herein referred to as a key member. Near its mid-portion the key member 52 has a slanting cam surface 54 that cooperates with a roller 56 on an arm 51 of the trigger 28 above the pivot or fulcrum 58 of this trigger. When the trigger 28 is pulled rearwardly, the member 52 is cammed forwardly, moving from the position thereof shown in Fig. 2 to the position thereof shown in Fig. 3. The member 52, near its forward end, cooperates with a lever subassembly comprising a pair of levers 6U, Figs. 2, 3, 4 and 7, and a pair of levers 62. The two levers 68 straddle the piston rod 30 and are fulcrumed at 64, Figs. 2 and 3, on the gun housing I0 above the piston rod 3U. The two short levers 62 disposed below the piston rod 30 straddle the forward end of the key member 52, being fulcrumed on a pin 66 carried by the member 52. The lower ends of the levers 62 are pivotally connected by a pin 68 to the lower ends of the levers 64. A coiled spring 'i8 tensioned between the pin 66 and an anchor l2 on the housing In biases the levers 62 upwardly and also biases the key member 52 toward the rear of the gun.

A pin 'I2 extends between and is secured to the upper ends of the levers 62, and this pin 'I2 normally is received in a small notch or recess 'I4 in the lower edge of the piston rod 35. When the trigger 28 is pulled, moving from the position thereof shown in Fig. 2 to the position thereof shown in Fig. 3, the key member 52 moves forwardly, and the pin 'I2 pushes the piston rod 38 forwardly against the action of the compression spring 34. The extended length of the trigger 20 affords the requisite leverage.

The trigger 20 has an arm 'I6 thereon which supports a paper feeding pawl 'I8 of resilient material such as rubber which is pivotally mounted. at 'I1 Within a small slot or recess 'I9 in the arm '16. When the trigger 20 is pulled, the pawl 'I8 bears against the paper strip 42 in the guideway 58 (becoming wedged between the guideway 50 and the pivot 'I'I) and pushes the strip 42 upwardly a certain amount before the pawl 'I8 becomes disengaged from the paper strip 42 near the upper end of its stroke. This serves to bring an unbroken area of the paper strip 42 over the grommet 4I) at the mouth of the cylinder 25. The breech I8 is connected by a link 8U to the rear end of the key member 52. There is a lostmotion connection aorded by a pin 82 on the key member 52 which is received within a yslot 84 in the link 30. Hence, the breech i8 does not move forwardly until the paper feeding step is completed. Then the breech I8 is pulled by the link 80 tightly against the grommet 49 to clamp the paper strip 42.

At the front end of the key member 52 there is a rounded shoulder or cam surface 85 which engages a stationary pin 88 in the housing I0 when the key member 52 nears the forward limit of its travel. This position is illustrated in Fig. 3. As the shoulder 86 strikes the pin 83 andcontinues to move forwardly the member 52 is tilted downwardly. It will be noted that the fulcrum pin 63 that connects the levers 50 and 62 together normally bears against a round shoulder 50 on the lower edge of the member 52. As the member 52 reaches the forward end of its travel, however, the pin 58 rides olf of the shoulder Si] and enters a recess 92 adjoining the shoulder 95, as shown in Fig. 3. rlhis prevents any further pivoting of the levers 62, which are held locked against angular movement by the combined action of the lever 60 and the key member 52 so long as the key member 52 is in the extreme forward part of its travel. Therefore, as the key member 52 is tilted downwardly by being cammed against the stationary pin 88, the levers 62 likewise drop slightly to clear the pin l2 from the notch M in the piston rod 3G. The piston rod then is free to move rearwardly under the pressure of its spring 34. The trigger 26 meanwhile is held in its rearward position as shown in Fig. 3.

As the piston rod 36 moves to the rear, the piston 28 builds up air pressure within the cylinder 26 in back of the paper strip d2 which is being clamped against the grommet 4% by the breech I8. The breech i8 has a hole 54 extending therethrough in registry 'with the hole in the grommet 40. When the air pressure within the cylinder 26 reaches a certain point, the area of the paper strip 42 which seals the mouth of the grommet lli) suddenly bursts with a loud report. The trigger 2G then is released, allowing all of the parts controlled thereby to assume their normal positions as illustrated in Fig. 2. The paper feeding pawl 78 does not bear against the paper strip 42 with any appreciable force in its return travel, inasmuch as the pawl 'i3 is not wedged against its pivot 'Il and is free to pivot a small amount during this movement. The trigger 2Q is restored by the action of the spring 'lli and comes to rest against the shoulder 95 on the trigger guard 22, thus dening the initial position of the pawl 18.

The pin 12 in the lever pair 62 rides along the n lower edge of the piston rod il@ and eventually seats again in the notch ifi.

From the foregoing description it will be seen that tlf'e key member 52 performs the functions of cooking the piston, releasing the piston and actuating the breech i8. It should be noted further that the key member 52 is not pivotally connected to the trigger 25, but is more or less floatingly supported within the housing it. These features greatly simplify the manufacture of the gun inasmuch as the parts need not be accurately aligned in order to work properly. In prior gun constructions, a certain amount of skill and time were required to insure proper alignment of pvvotally interconnected links and. the like. In the present construction a single element (key member 52) performs all of these operative func: tions of the gun except the feeding of paper. I-Ielie, it is merely necessary to see that the other parts such as the levers 50. and 6.2, andthe link are properly connected to the member 52. In assembling the gun it is found convenient to pre-l assemble the member 52, levers 60 and 52, link 80 and breech iB before mounting the parts in the gun housing. Similarly, the cylinder 2G, muzzle plate M and grommet 48 may conveniently be preassembled as a unit, together with the pi-ston 28 and piston rod 30. The cylinder 26 is secured in any suitable manner to the gun housing I0.

The appearance of the gun, simulating a western pistol, is very attractive to children. The simulated hammer or breech I8 is in a position Where it can readily be manipulated, and there may be a temptation to force the operation of this breech. The lost-motion connection between the breech i8 and the key member 52 prevents damage from being done by rough handling of the breech i3. This ,connection affords a certain amount of free play so that the parts are not thrown seriously out of alignment. In the present gun construction a slight misalignment of the parts is of no consequence. The provision of the compression spring 34 in a separate compartment ahead of the piston rod 30 is another feature which expedites production of the gun. In prior guns the spring had to be coiled around the piston rod, requiring a higher degree of accuracy in the formation and alignment of the spring coils.

While there has been illustrated and described what is at present considered to be the preferred embodiment of the invention, it is contemplated that there may be modifications of such embodiment within the true spirit and scope of the invention as set forth in the appended claims.

I claim:

l. An operating mechanism for a paper bursting gun of the type in which a pneumatic cylinder and an associated piston rod are supported by the gun housing, such mechanism comprising a horizontally movable key member, a breech lever fulcrumed on the gun housing for movement toward and from the cylinder, link means connecting said breech lever to said key member, and lever means having a fulcrum on said key member and another fulcrum on the gun housing, said lever means including a portien cooperable with the piston rod, and means biasing said lever means into cooperation with the piston rod to actuate said piston rod as said key member moves, said key member having a cam portion thereon engageable with iixed means on the housing for moving said key member and said lever means against the action of said biasing means to release the piston rod from said lever means.

2. An operating mechanism for a paper bursting gun of the type in which a pneumatic cylinder and an associated piston rod are supported by the gun housing, such mechanism comprising a horizontally movable key member, a breech lever fulcrumed on the gun housing for movement toward and rrom the pneumatic cylinder, a lost-motion linkage connecting said breech lever to one end of said key member, lever means having a fulcrum on said key member near the other end thereof and having another fulcrum on the gun housing, said lever means including a portion coonerable with the piston rod, and means biasing said lever means into cooperation with the piston rod to actuate the piston rod as said key member moves, a Xed parten said gun houssing, said key member having a part at said other end thereof engageable with said fixed part on the housing, with one of said two parts having a cam surface for moving said key member and said lever means against the action of said biasing means to release the piston from said lever means.

3. An operating mechanism for a paper bursting gun of the type in which a pneumatic cylinder and an associated piston rod are supported by a gun housing on which a trigger for actuating the piston rod also is supported, such mechanism comprising a horizontally movable key member. a breech lever fulcrumed on the gun housing for movement toward and from the pneumatic cylinder, link means connecting said breech lever to said key member, lever means having a fulcrum on said key member and another fulcrum on the gun housing, said lever means including a portion coop-erable with the piston rod, and means biasing said lever means into cooperation with the piston rod to actuate the piston rod as said key member moves, said key member having a rst cam portion engageable with fixed means on the housing for moving said key member and said lever means against the action of said biasing means to release the piston from said lever means, and a second cam portion on said key member engageable by a part of the trigger for moving said key member as said trigger is actuated.

4. A pneumatic gun for bursting successive o areas of a paper strip, such gun comprising a housing having a forwardly extending barrel portion, air compression means mounted within said housing rearwardly of said barrel portion, a breech member fulcrumed on said housing and disposed to the rear of said air compression means, a guideway for` directing a paper strip between said air compression means and said breech, said breech being cooperable with said air compression means to form a rupturable paper seal with the intervening paper strip, an actuating rod for said air compression means, said rod extending through said barrel portion, a key member in said housing movable in a substantially linear path parallel with said actuating rod, means linking the rear portion of said key Member to said breech, coupling means at the forward end of said key member for providing a separable driving connection between said key member and said actuating rod, a fixed member in said housing cooperating with a portion of said key member to uncouple said actuating rod from said key memb-er, and a trigger pivotally supported on said housing for actuating said key member.

5. In a .paper bursting gun having a stationary cylinder and means for feeding a paper strip intermittently past the mouth of said cylinder, a piston rod extending from said cylinder, a shiftable member adjacent to and outside o-i said cylinder and movably supported on said gun, said member being movable in a path substantially parallel with said piston rod, said piston rod having a notch in one edge thereof, lever means fulcrumed on said member and having a portion adapted to seat in said notch, said lever means being effective to move said piston rod when said member is shifted in a given direction, said shiftable member having an engageable portion thereof, a xed member on said gun having an engageable portion, with one of said engageable portions having a cam surface for tilting said member to move said lever means out of said notch when said portions are engaged at the cam surface, spring means for moving said piston rod to compress air in said cylinder when said piston rod is released fromA said lever means, a breech supported on the gun and movable toward and from the mouth of said cylinder, and a linkage connecting said breech to said shiftable member whereby said breech seals the paper strip against said cylinder mouth while said piston rod is moving to compress air 'within said cylinder.

6. In a paper bursting gun having a stationary cylinder with a guideway for a paper strip extending across the rear -end of said cylinder, the combination of a piston in said cylinder having a piston rod extending forwardly therefrom, a spring acting upon said piston rod to urge said piston into said cylinder, a shiftable member movable in a path substantially paralleling said piston rod, said piston rod having a notch in one edge thereof, lever means fulcrumed on said shiftable member and having a portion thereof normally received in said notch, spring means biasing said lever means toward said piston rod and biasing said shiftable member rearwardly, a trigger having camming interengagement with said shiftable member for moving said member forwardly when said trigger is pulled, said lever means pushing said piston rod forwardly against the action of said spring when said member is thus moved, a fixed member engageable with a part of said shiftable member when the members are engaged for tilting said shiftable member to disengage said lever means from said piston rod, whereby said piston is moved into said cylinder by said spring, a breech at the rear of said cylinder movable into and out of engagement with the paper strip, and a linkage between said shiftable member and said breech for bringing said breech into sealing engagement with the paper when said piston rod moves rearwardly, with said shiftable member, trigger, fixed member, and said breech all being supported on said gun.

7. In a paper bursting gun having an air compression device with an actuating rod extending therefrom, the combination of a lever system normally biased into engagement with a portion of said rod, pivoted breech means movable toward said air compression device to seal the paper thereagainst, a movable member interconnecting said lever system and said breech means, a trigger having direct camming engagement with said member for actuating the same to cock said rod and to move said breech means into its papersealing position, said member also being movable relative to said trigger, and means for moving said member relative to said trigger in a direction to release the cocked rod without releasing said breech means, thereby causing the paper seal to be burst, with said lever system and said trigger being supported on said gun.

8. In a paper bursting gun having an air compression device with a piston rod extending therefrom, the combination of a housing for said gun, a key member iioatingly supported within said housing for principal movement in a direction paralleling said piston rod and for secondary movement in a direction normal to said piston rod, means for imparting the principal movement to said key member, a pusher element on said key member for actuating said piston rod to cock the same when said key member is given its principal movement, a breech supported on said housing and movable toward said air compression device to seal paper thereagainst, a link coupling said breech to said key member, and means for imparting the secondary movement to said key member to release the cocked piston rod without releasing said breech, thereby causing the paper seal to be burst.

9. In a paper bursting gun having an air compression cylinder with a piston working therein, a piston rod extending from said piston, a breech supported on the gun and movable toward and from said cylinder to seal paper thereagainst, a key element iloatingly supported within the gun for principal movement in a direction paralleling said piston rod and for secondary movement in a direction awav from said piston rod, a trigger supported on the gun and adapted to bear against said key element for imparting the principal movement thereto, said key element having a portion cooperating with said piston rod to cock said rod when said key element is moved by said trigger, stationary means adapted to have camming engagement with said key element to move the same away from said piston rod and thereby release said piston rod, a spring acting upon said piston rod to move said piston into the cylinder when said rod is released, and means linking said key element to said breech for bringing said breech into cooperation with said cylinder when said key element has its principal movement and for maintaining said breech in cooperation with said cylinder when said key element has its secondary movement, whereby a rupturable paper seal is formed while said piston is compressing the air within said cylinder.

10. A paper bursting gun comprising a housing having an opening in the rear portion thereof, an air compression cylinder within said housing having its mouth at said opening, a trigger pivoted on said housing, means actuated by said trigger for intermittently feeding a paper strip past the mouth of said cylinder, a breech pivoted on said housing in back of said cylinder, said breech simulating a gun hammer and being adapted to cooperate With the mouth of said cylinder to form an air seal with the paper strip, a piston within said cylinder having a piston rod extending forwardly therefrom, a key member within said housing movable in a direction paralleling said piston rod and also movable away from said piston rod, a lost-motion linkage connecting said key member to said breech, lever means fulcrumed on said key member and normally adapted to engage said piston rod, said piston rod having a recess in the edge thereof to receive a portion of said lever means, means biasing said lever means toward said piston rod, said trigger having camming engagement with said key member to actuate the same in a direction parallel to said piston rod for thereby cooking said piston rod, and a stationary element in said housing for camming said key member away from said piston rod to release said piston rod from said lever means.

11. A paper bursting gun with a housing, and said gun comprising a stationary cylinder, a piston within said cylinder having a piston rod extending therefrom, a spring acting upon said piston rod for urging said piston into said cylinder, a key member supported in said gun for movement parallel to said piston rod and also being capable of movement away from said piston rod, said piston rod having a recess in one edge thereof, a first lever fulcrumed on said key member having a portion normally adapted to seat in said recess, a second lever fulcrumed on said housing and pivotally connected to said rst lever, spring means biasing said rst lever towards said piston rod, means for moving said key member parallel to said piston rod in a direction opposed to the action oi said spring acting upon said piston rod, whereby said piston is cocked by said rst lever, said first lever having a portion engageable with an edge of said key member to limit the pivoting movement of said first lever after a predetermined travel of said key member, and a stationary abutment cooperable with said key member to cam the same away from said piston rod While said first lever is blocked by the edge of said key member against further pivotal movement, thereby to withdraw said rst lever from said piston rod and release said piston rod to the action of its spring.

12. In a paper bursting toy pistol of the western type having air compressing mechanism with a piston rod, and piston, and a cylinder having an air expelling opening therein, the combination of means for cocking said mechanism and sealing paper at the air expelling opening, said means including a simulated pistol hammer on the outside of the pistol yadapted to be pivoted into and out of paper sealing position Iat the air expelling opening to permit bursting of the paper, a fulcrum on the pistol pivotally supporting said simulated pistol hammer, means supported within the gun connectible with the piston rod for lco-cking the same, linkage means likewise within the gun and operatively connected With said connectible means and said simulated hammer to move both for the cooking and for the sealing operations of the pistol, and trigger means supported on the pistol operatively connected to said linkage means to move the latter, said linkage means including a lost motion connection to said pistol hammer whereby said pistol hammer may have a limited movement without imparting a corresponding movement to said linkage means.

13. Mechanism for piston rod cooking and -paper sealing in a paper bursting toy pistol of the western type having a housing and air developing means therein which includes the piston rod and an air expelling opening at which to burst paper, said mechanism including in combination a simulated pistol hammer on the outside of the pistol housing, a pivot on the housing supporting said hammer, piston cooking means supported within the housing, linkage supported within the housing connecting said piston cocking means and said hammer to move both to cock the piston and to seal paper at the air expelling opening respectively, and a trigger pivotally mounted on said housing operatively connected to said linkage to move the latter and thereby move said piston cooking means and said hammer, said linkage means including a lost motion connection to said pistol hammer whereby said pistol hammer may have a limited movement without imparting a corresponding movement to said linkage means.

OTTO E. LANGOS.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,511,718 Burger Oct. 14, 1924 1,660,175 Peake Feb. 21, 1928 1,755,142 Aronson Apr. 15, 1930 1,818,264 McCann Aug. 11, 1931 2,440,177 Laidig Apr. 20, 1948

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