US2490991A - Self-feeding paper bursting toy gun - Google Patents

Description

Dec. 13,1949 o. A. LANG Q5 2,490,991

SELF-FEEDING PAPER BURSTING TOY GUN Filed Jan. '7, 1948 2 Sheets-Sheet 1 INVENTOR.

difa Q lavas Patented Dec. 13,, 1949 SELF-FEEDING PAPER BURSTING TOY GUN Otto A. Langos, Chicago, Ill.

Application January '7, 1948, Serial No. 853

8 Claims.

This invention relates to toy guns of the paper bursting type.

In prior paper bursting guns difliculty has been encountered in obtaining a satisfactory paper feed. Sometimes the paper is not advanced sufilciently between successive pulls of the trigger to present an unbroken area of paper at the muzzle of the gun, so that several pulls of the trigger may be required to produce a single'report. Furthermorathe paper feeding devices for mechani'sms of this type have tended heretofore to be cumbersome, expensive and unattractive in appearance.

An object of this invention is to provide a paper bursting pistol or other gun having an improved paper feeding arrangement whereby the disadvantages mentioned above are obviated.

A further object is to provide an improved paper handling mechanism which is disposed entirely within the housing of the gun.

A still further object is to effect a positive paper feed with novel, simple and economical means;

The novel features of this invention include a smooth paper guideway which is an integral part of the gun housing disposed in proximity to a resilient paper feeding pawl arranged on the link extending between the trigger and the piston rod of the gun. The expended portion of the paper strip is led back from the muzzle of the gun through the paper guideway, which extends approximately parallel to the piston rod. As the trigger is squeezed, the feed pawl bears on the paper and slides along the guideway to advance the paper and present an unbroken area thereof at the gun muzzle, such advancing movement of the paper occurring before the piston rod is released to compress the air in back of the paper.

As another feature, I so arrange the working parts that the paper feed pawl is maintained out of contact with the paper on the return stroke of the trigger, this being efiected by novel coaction between the piston rod and the aforesaid link on which the pawl is mounted.

For a better understanding oi the invention, together with other objects and features thereof, reference is had to the following detailed descri tion taken in conjunction with the accompanying drawings, in which:

Fig. 1 is an elevational view of a gun constructed' in accordance with and embodying the principles of the invention;

Fig. 2 is a perspective view showing pertinent elementsof the gun structure in disassembled relation;

Fig; 3 is a longitudinal section through the gun T? w i various to illustrate the operative relations parts; and

Fig. 4 is a transverse section taken on the line 44 in Fig. 3.

The toy pistol herein disclosed is, in its basic construction, similar to the paper bursting gun disclosed and claimed in United States Letters Patent No. 2,083,535 issued to Otto A. Langos. The gun has a metal body or housing with an air cylinder disposed at the muzzle of the gun, a piston working in said cylinder, and a piston rod supported for sliding movement by the housing. A trigger is connected by a link to the piston rod for retracting the piston against the action of a powerful spring when the trigger is squeezed. As the trigger nears the end of its working stroke, the link is disengaged from the piston rod, allowing the spring to restore the piston. Meanwhile, an unbroken area of the paper is clamped against the gun muzzle to form an airtight seal, and the compression of air by the piston serves to rupture the paper with a loud report resembling a gunshot.

In accordance with the invention, a paper guideway integral with the gun housing extends lengthwise of the gun above the piston rod, and the expended portion of the paper strip is led rearwardly through this guideway. A resilient pawl mounted on the trigger linkage is arranged to bear against the paper while being moved slidably along the guideway as the trigger is squeezed. When the piston rod is fully retracted, the link is automatically disengaged from the piston rod by being cammed out of a recess in the rod wherein it normally seats. The piston rod then shoots forwardly to burst the paper. During the return stroke of the trigger the link and the piston rod coact to maintain the paper feeding pawl spaced from the paper guideway until the trigger is fully restored, whereupon the link again seats in said recess and the pawl again bears on the paper.

Referring now to the drawings, the gun has a two-part frame or body which includes a housing l0 provided with a grip [2 extending downwardly therefrom. Fastening devices such as rivets H and [3 are employed to secure the two halves of the housing together. Within the housing lil near the muzzle end thereof is disposed a cylinder M which is provided with apertures as It, Figs. 2 and 3, to receive integral lugs as l8 provided on the two parts of the housing It], whereby the cylinder M is retained firmly when these two parts are secured together. A piston 20 connected to a piston rod 22 works within the cylinder M. The rod 22 is slidingly supported by 3 the frame of the gun, as indicated in the drawmgs.

The housing l includes a paper magazine or supply chamber 24 integral therewith and positioned beneath the cylinder M for supporting a roll R of paper. The paper P is led from the roll R up past the muzzle of the gun and rearwardly therefrom through a paper guideway G, which preferably is an integral part of the housing It]. After passing through the guideway G, the paper P projects from the butt end of the housing Ill, where it may be torn off and removed from time to time.

The front end of the cylinder M is flanged, as indicated at 26, Fig. 3, and a muzzle plate 28 fits tightly against this flange 26. The plate 28 has an opening therein to receive a rubber grommet 3B which serves to secure the plate 28 to the flange 26. The paper P is disposed across the opening in the grommet 3B and, at the appropriate time in the operation of the gun, efiects an airtight seal, as will be described presently.

A powerful coil spring 3.2, disposed on the piston rod 22 intermediate the piston 20 and a frame lug 34 through which the rod 22 extends, is employed to effect the compression stroke of the piston 20. For retracting the piston rod against the action of the spring 32 there is provided a trigger 36 which is pivotally mounted on the rivet l3 that holds the two frame pieces together. A double link 38 (Figs. 3 and 4) pivotally connected at 42 to the trigger 36 is subject to the action of a spring 42 which extends around the pivot 40 and bears against an end of the link 38, the other end of the spring 42 bearing against a part of the housing as shown. The spring 42 urges the upper end of the link 38 toward the piston rod 22. A bifurcation or yoke 46 at the upper end of the link 38 partially embraces the rod 22, and a pin or rivet 4G in this yoke normally is received in a notch or recess 48 provided in the lower edge of the piston rod 22. As the trigger 36 is cooked, that is, pulled rearwardly from its full-line position (Fig. 3) into the position thereof indicated .by broken lines, the link 38 is pushed from its full-line position to its broken-line position and the pin 46 is effective to move the piston rod 22 rearwardly against the action of spring 32.

For sealing the paper P against the mouth of the grommet 38 there is provided a clamping rin Fig. 1, supported in front of the gun muzzle by a pair of rearwardly extending arms 52. These arms 52 extend between guide lugs 54 on the muzzle plate 28 and curve downwardly at their rear ends, where they are interconnected by a crosspin 55 which passes through slots 58 in opposite sides of the gun housing Ill. The link Gil is pivotally connected at its respective ends to the pin 56 and to a rivet 62 on the link 38. The rear end of the link 68 is formed into a cam 54 for a purpose which will be explained.

As the trigger 36 is cocked or pulled to effect retraction of the piston 20 as described above, the link 89 pulls the arms 52 rearwardly to bring the clamping ring 55 against the paper P and produce an airtight seal at the mouth of the grommet 3B. This sealing action does not occur until the piston rod 22 nears the end of its rearward stroke, so that the admission of air to the cylinder l4 meanwhile is not impeded. Normally, there is sufficient slack in the paper P for this purpose. mechanism near the end-of their rearward travel, the cam 64 engages the rivet H, causing the link 38 to pivot downwardly about its pivot point 40.

As the links 38 and 60 of the trigger Crosspin 46 thereupon is cammed out of the recess 48, releasing the piston rod 22 to the action of the spring 32, which .by now is fully compressed. The trigger is held rearwardly in the grip of the user while the piston rod 22 and piston 29 are thrust suddenly ahead by the expansive force of the spring 32. At this time, as has been explained, the paper P is clamped tightly against the grommet 36 of the clamping ring 5%. Compression of the air in the cylinder it occurs until the paper is ruptured due to the high pressure, causin it to burst with a loud noise. A tube l8 attached to and extending forwardly of the clamping ring functions as a sound amplifier to intensify the noise produced by the bursting paper. When the trigger 36 is released by the user, it is restored by the spring 42, and the various moving parts assume the positions thereof indicated in full lines, Fig. 3.

For feeding the paper P through the guideway G, there is provided a resilient pawl E2 which,

preferably is formed as an integral, projecting part of a short strip 4 that is secured to the link longitudinally extending aperture 86 defined between the inner edges of the two flanges '16 permits the expended portion ofthe paper strip to be viewed in the guideway G. Normally, when the crosspin 46 is seated in the recess dB, Fig. 3, the feed pawl 12 extends past a narrow section of a rib l8 and bears against the paper strip P to press the paper against the underside of one.

of the flanges 16, Fig. 4.

The surface of the flange 16 with which the pawl '12 cooperates is relatively smooth. As the trigger 36 is squeezed, the pawl 12 slides along the guideway G and, by virtue of its frictional engagement with the paper, pulls the expended portion of the strip P rearwardly a step. This brings an unbroken area of the paper P in front of the gun muzzle during the interval whilethe piston 29 is being retracted and before the clamping of the paper by the ring 50 takes place.

When the pin i6 is cammed out of the recess 48 to release the piston rod 22, the pin 46 thereafter bears against the lower edge of the rod 22, whereby the feed pawl 12 is maintained spaced from the flange 16. Then, as the trigger 36 is restored the pin 46 rides along the lower edge of the rod 22, keeping the pawl 72 away from the paper P until the trigger is fully restored. Thereupon the pin 48 moves into the recess 48, and the pawl '12 is brought back into engagement with the paper P in the guideway G.

The paper roll R fits loosely in the cylindrical magazine 24, being retained therein by a small' resilient plate 82 which is clipped onto the magazine 24. The plate 82 may be swung downward-- 1y when a new roll is to be inserted ,in the magazine 24, being then restored to the position shown out of the 4 to prevent the roll R from dropping magazine. It will be apparent from the foregoing description that I have provided a toy gun which in-Ifcorporates the advantages and features hereinabove referred to. While a preferred embodiment has been disclosed, this is capable of modiflcati'on within the purview of the invention and it is intended therefore to include all such modifications within the scope of the appended claims.

I claim:

1. A toy paper-burster gun of the automatic paper feed and burster type including in combination, feedable paper carried in said gun, means for bursting said paper including a piston rod slidably supported in said gun, mechanism for feeding said paper including feed means selectively engageable with said paper and also including piston-rod-engaging-means, with said feed means and said piston-rod-engaging-means being interconnected by a portion of said mechanism for movement as a unit, means for mounting said mechanism in said gun so that said piston-rod-engaging-means releasably connects with and moves said piston rod and so that said feed means engages with and moves said paper on a working stroke of said mechanism, and means acting at the end of said working stroke for disengaging said piston-rod-engaging-means and said piston rod, with said piston-rod-engagingmeans thereafter slidably engaging said piston rod and moving relative thereto to move said feed means out of contact with said paper during a return stroke of said mechanism.

2. A toy paper-burster gun of the type which alternately feeds and bursts a paper strip carried therein, such gun comprising stationary means forming a guideway for the paper strip, paper bursting means including a piston rod slidably mounted in the gun, mechanism movably mounted in the gun including paper feed means r,

movab1e into and out of said guideway and also movable along said guideway, said mechanism also including a portion engaging said piston rod, with said feed means and said engaging portion being interconnected by a portion of said mechanism for movement as a unit, said piston rod having a part complementary with said engaging portion to afford a releasable connection therebetween and. also to dispose said paper feed means in said guideway, means for. actuating said mechanism to cook said piston rod and to feed the paper strip during a working stroke of said mechanism, and means for disengaging said piston rod part and said engaging portion at the conclusion of the working stroke, with said engaging portion thereafter slidably engaging said piston rod and moving relative thereto to dispose said paper feed means out of said guideway during a return stroke of said mechanism.

3. In a paper-burster gun with feedable paper therein, the combination including a gun housing, a piston rod supported in said housing for substantially straight line movement on both a working stroke and a return stroke, paper feed means movably mounted in the housing adapted to engage paper during a working stroke and adapted to be disengaged therefrom during a return stroke, means operatively connecting said paper feed means with said piston rod whereby they move together for the duration of a working stroke, means disconnecting said paper feed means from said piston rod at the completion of the working stroke so that they may move relative to one another, means moving said paper feed means and said operatively connecting means relative to said piston rod at said completion of a working stroke, said operatively connecting means engaging said piston rod on said latter movement and being guided thereby and moving said paper feed means out of engagement with the paper during said latter movement returning said feed meansto idle position,

4. In a paper-burster gun having feedable paper therein, the combination of a housing for said gun having'therein a paper guideway including wall means; with a long-itudinallyextendlng inside wall surface over which feedable paper can be moved, paper bursting means including a member supported in saidhousing for movement relative to said wall surface, mechanism having operatively connected portions movably mounted in said housing and adapted at one of its portions-to'releasably connect with said member to cook the same and adapted at another portion to simultaneously act With said cocking upon paper to feed the same in said guideway and against said surface, means for removing said firstiportion of said mechanism from said releasable connection with said member to permit the latter to drive to an idle position and with said paper feed portion in said mechanism being thereby removed from the paper, and means for returning said paper feed portion to idle position, with said paper feed portion being maintained out of engagement with the paper by operative sliding engagement with said member during said return movement to idle position.

5. Mechanism movably mounted in the housing of a paper-burster toy for repeatedly feeding and bursting paper upon continuous operation of the toy, said mechanism comprising in combination, piston means including a piston rod slidably supported in said housing, paper feed means engageable with the paper on a cooking movement of the mechanism and disengageable from the paper on a return movement of the mechanism to idle position, mechanism actuating means operatively connected with said paper feed means, engaging means operatively connected with said paper feed means, and with said mechanism actuating means for engaging said piston rod, said piston rod having a guiding edge with a recessed portion therein for cooperation with said engaging means and having an air pressure developing function in the bursting of the paper, means for mounting the mechanism in the housing in a position such that said engaging means is releasably connected with the guiding edge of said piston rod at said recessed portion thereof during the cocking movement of the mechanism, means in said mechanism and on the housing acting to withdraw said engaging means from said recessed portion and thereby break said releasable connection at the completion of the cocking movement, and means maintaining said engaging means on said guiding edge of said piston rod during a return movement and thereby maintaining said paper feed means away from the paper.

6. In a paper-burster gun with paper therein, a housing, a cockable piston rod having a shoulder portion therein, means supporting said piston rod for substantially straight-line movement in said housing, mechanism movably mounted in the gun having operatively connected portions which include a paper feeding portion, a portion for engaging said piston rod, and a trigger portion, means supporting said mechanism in the housing in a position such that said engaging portion is maintained in engagement with the shoulder portion of said piston rod for a cocking movement of said trigger portion to move said piston rod to a cocked position, with said feeding portion simultaneously engaging and feeding the paper during such cocking movement, means releasing said engaging portion from said piston rod shoulder portion at the end of the cooking movement to permit substantially straight-line movement of the piston rod for developing air pressure to burst the paper, means for moving said mechanism to an idle position, and guide means having a cooperative relationship with said engaging portion during the movement of said mechanism to an idle position to maintain said engaging portion in a substantially straight line of movement and at the same time maintain said feeding portion out of engagement with the paper during such movement to an idle position.

'7. In a paper-burster gun oi the type for repeatedly feeding and bursting paper upon continuous operation of the gun and having feedable paper therein, the combination including a gun housing, paper bursting means including a member supported in said housing for movement relative thereto, mechanism having operatively connected portions movably mounted in said housing and adapted at one of its portions to releasably connect with said member to move the same and adapted at another portion to simultaneously act with said moving operation upon paper to feed the same in the gun, cam means acting to remove said first mentioned portion from said releasable connection with said member to permit the latter to drive to an idle position and with said other portion being concurrently removed from feeding connection with the paper, means for returning said mechanism to idle position, and guide means maintaining said other portion out of engagement with the paper during said return movement of the mechanism.

8. In a paper-bursts! gun having paper feedable therethrough, the combination of a gun housing having an inside longitudinally extending paper-guiding surface therein, a piston unit having a piston rod supported for movement in said housing in a line substantially parallel with said paper-guiding surface, said piston rod' being recessed to define a shoulder portion on one side thereof away from said paper-guiding surface, means movably mounted in said housing for moving said piston rod to cook said piston unit, including a trigger and linkage operatively connected to said trigger, and said linkage including a portion thereon releasably engaging said shouider portion and moving said piston rod therewith upon a cooking movement of said trigger, a feed pawl on said linkage adapted to bear against the paper to press the same against said guiding surface and to feed the paper upon said cocking movement, with said feed pawl being in said paper feeding position during said cocking movement when said linkage portion is engaged, and with said linkage portion being releasable from said shoulder portion at the conclusion of said cocking movement to uncock said piston rod and permit movement thereof relative to said linkage in said line substantially parallel to said paper-guiding surface, means for returning said trigger to an idle position, and guide means having a cooperative relationship with said linkage portion during the movement of said trigger to its idle position to maintain said feed pawl out of engagement with the paper.

OTTO A. LANGOS'.

REFERENCES CITED The following references are of record in th file of this patent:

UNITED STATES PATENTS Number Name Date 624,543 Rightmyer May 9, 1899 986,322 Stone Mar. 7, 1911 1,438,017 Brown Dec. 5, 1922 1,480,344 Bowman Jan. 8, 1924 2,176,474 Smith Oct. 17, 1939 2,237,678 Lohr et a1. Apr. 8, 1941 2,355,595 Langos Aug. 8, 1944 2,440,177 Laidig Apr. 20, 1948

Images