US2351823A - Popgun - Google Patents

Description

Jane 20, 1944.

c. F. LEFEVER for em:

Filed April 24, 1943 2 Sheets-Sheet -1 A 'FIG.2.

INVENTOR. CHARLES F. LVEFEVERV FIG}.

ATTORNEYS June 20, 1944. I c. F. LEFEVER 2,351,823

POP 01m Filed April 24, 1943 Sheets-@Sheet 2 W, .7? if I 5 f 1*":

I I I I Q M e B7 V :2 w: v 5

:1 B F 7 ""9: I a B8 INVENTOR. CHARLES F. LEFE-VER BY I 5 1 ATTORNEYS.

Patented June 20, 1944 U TED STATES pins- T n F -E.

POPGUN Charles F. Lefever, Plymouth, Mieh;, assignor to Daisy Manufacturing I Mich., a corporation of Michigan I Application April24, 194's, Serial No. 484,411 H 6 Claims. (era's-1914 I I rear end thereof with'aknob. ,I-If atits rear end.

The invention relates to .pop guns and has for its primary object the obtaining of -.a construction which can be manufactured at low cost and from materials which are available for this pur pose during the present national emergency. To this end the invention consists in the construction as hereinafter. set forth.. I

:Inthe drawings: Fig. 1 is a perspective view of my improved pop Fig. 2 is a longitudinal section through the barrel-ofthegun; I i

' Fig. 3 is a section .on line 31-3, Fig.2;

.4 is across sectionon line 4- 4, Fig. 2;

vFig. 5 is a section-n line 5, Fig. 2;

vFig. 6 is a sectional elevation showing a-modifiedconstruction; and

'7 is a cross sectionon line"l 1, Fig. 6.

My improved pop gun is of that type in which the noise is produced by the rupture of a paper strip subjected to air pressure. -Heret0fore guns of this type have been -provided with various means for clamping the paper in sea-ling contact with the air chamber. In the presentconstruction I accomplish this by novel and simple means dispensing with parts heretofore necessary. Also, the construction is one which may be made almost entirely from wood and from scrap stock which has little value for other purposes.

As illustrated, my improved :p'op gun is .in the form of a pistol having a barrel A and handle B both preferably formed of wood. iThe barrelA is bored and counterbored from oppositerends to form .therewithin. .an annular, shoulder C'located a short distance in rear of the-forward end. It i is also cut away on opposite sides ,to form a slot D extending transversely therethrough adjacent to the shoulder Cfor-the passage of a paper strip E. Within the rear portion of the barrel is a sleeve member F which has a bore F in its for- Company, 1 Plymouth,

The piston is secured by a screw G with metal washers. G andG within and in rear of the cup. The latter is adapted to engage theshoulder F tolimit thewrearward movement of the piston.

' {Ifhe sleeve F is longitudinally movable withinthe ward portion constituting an air chamber and a bore F of slightly smaller diameter in its rear portion with a shoulder F therebetween. The forward end of the sleeve is slightly tapered to form a narrow annular face F adapted in the forward movement of the sleeve to press the paper strip against the shoulder C. The latter is provided with a gasket or facing C formed of a leather, rubber or other yielding material so that the paper will be pressed against the face F to seal the front end of the air chamber. G is a piston within the bore F preferably formed of a cup of leather or other suitable material. This piston is secured to the forward end of the shank 0r rod H in the bore F extending out from the tending through a barrel .A which movement is limited by a pin or dowelI- extending inward from one side of the barrel to engagea slot I in the sleeve. The amount of movement permitted is suflicientfor the sleeve to; clear the slot D in its rearmost position and toepress against the gasket 0 in its forward position. ,At one side of the barrel just in rear ofthe slot Dis a magazine .J for holding arol-l of paper strip. This magazine has a slot J in its forward side through which the paper is drawn and then passed through the slot D. The handle B-is .mortised into the lower face of the barrel as indicated at B and secured by glue. It is also provided with an aperture B in the forward portion thereof to simulate a trigger guard. .'Wi;th the construction as-described, the friction between the cupped piston G and the sleeve Fissumcientto move the latter with the former as .far as permitted by the slot ,1. Thus, assuming-that the rod .H has been drawn rearward and the ,pistomGyis in the position shownin Fig. 2, .thesleeve F will be in rear of the slot D so as to permit thepaper strip E to be drawn through said slot from themagazine J .To fire the gun the handle B'is grasped.bytheright-hand of the operator who also inserts a finger through the apertureB asif he were pulling upon a trigger. {The knob H isthen. moved forward .;by the lefthand. andonaccount of the friction between the piston andsleeve will advance the latter toclamp .thepaper stripE against the. gasket C The ,continued forward movemehtof the :knobH and rod H will move the piston G within the bore F compressing the air therein until sufiiclent is attained to rupture the a loud report.

In Figs. 6 and .7 a slightly modified construction is shown where the handle has a portion B attached to the barrel and another portion B exslot in the barrel and attached to the sleeve F. The latter portion has a mortised sl0t B engaged by a tongue B on the portion B A pin B extending through both members and engaging a slot 13 in the tongue B limits the amount of movement permitted. With this construction the forward movement of the sleeve F to clamp the paper strip is effected by the grasp of the handle and the rod H is only used for'opcrating the piston to compress the air. However,

pressure paper. This will cause slotted for the passage of a paper strip therethrough, an annular seat or shoulder within said 2 barrel forward of said slot, a sleeve movable within the rear portion of said barrel constitut-vv ing an air chamber and adaptedwhen moved' forward to press said paper strip against said seat;

sealing the forward end of said air chamber, a piston within said air chamber and a piston rod for actuating the same extending out from the;

rear end of said sleeve and barrel, adapted when moved forward to compress the air within said chamber and rupture the strip. l

' 2. A pop gun comprising a' barrel transversely slotted for the passage of a paper strip there through, an annular seator shoulder within said barrel forward of said slot, a sleeve -'movable within the rear portion of said barrel into and out of contact'with'said paper strip and seat, the forward portion of said sleeve constituting an air chamber, apiston in said air'chamber, an actuating rod for said piston-extending rearward beyond said sleeveand barrel, a knob at the'rear end' of said rod, and means operating in advance of the forward movement of said piston under actuation of said knob and rod for pressing said sleeve against said p'aper strip and seat to-seal the forward end of said'air chamber, whereby the forward movement of said piston in said chamber will compress the air therein and rupture said paper strip; 1 l

- 3. A pop gun comprising abarrel transversely slotted for the-passage of a paper strip therethrough, an annular seat or shoulder within said barrel forward of said slot, a sleeve movable within the rear portion of said barrel into and out of contact with said paper strip and seat, the-forward portion of said sleeve constituting an air chamber, 'a piston in said air chambergan actuatingrod for said piston extending rearward beyondsaid sleeve and'barrel, a knob at the rear end ofsaid rod, means operating in advance of the forward movement of said piston'under ac tuation of said knob and rod-for pressing said sleeve against said paper strip and seat to seal the forward end of said air chamber; whereby the forward movement -of--said piston in said chamber will compress the air therein and rupture said-paper strip, and a magazine attached to said barrel on one side thereof for holding a roll of said paper strip.

4. A pop gun comprising a barrel transversely slotted for the passage of a paper strip therethrough, an annular seat or shoulder within said barrel forward of said slot, a sleeve movable within the rear portion of said barrel into and out of contact with saidpaper. strip and seat, the forward portion of said sleeve constituting an air chamber, a piston in said air chamber, an actuating rod for said piston extending rearward beyond said sleeve and barrel, a knob at the rear end of said rod, means operating in advance of the forward movement of said piston under acftuation of said knoband rod for pressing said sleeve against said paper strip and seat to seal the forward end of said air chamber, whereby 7' the forward movement of said piston in said chamber will compress the air therein and rupture said paper strip, and a magazine attached to said barrel on one side thereof for holding a roll of said paper strip, said magazine having a cylindrical recess open at the top for the :insertionof said roll and a slot inits side through which the strip is drawn into the slot through said barrel;

'5 A pop gun comprising a barrel forming/an air chamber and transversely slotted'for the passage of a paper strip therethrough, an annular seat or shoulder within said barrelforward'of said slot, a sleeve movable within the rear por-' tion of said barrel, means for limiting-themo'vement of said sleeve within said barrel, a pist'on within said air chamber frictionally engaging said sleeve, and a rod extending rearwardsfrom said piston beyond the rear endof saidsleeve and barrel, whereby the forwardmovei'nent of said rod will first move said sleeve into' jsealing contact with said'strip and will then compress the air in said chamber to rupture the strip.

6. A pop gun comprising a barrel transversely slotted for the passage of a paper strip' therethrough, an annular seator shoulder within'said barrel forward of said slot, 2. sleevewithin the rear portion of said barrel movable therein into and out of contact with said paper strip and seat,- said sleeve constituting an. air chamber, a handle having a portion secured to' 'said barrel and another portion secured to said sleevawhereby the-relativemovement of said portions when grasped 'bythe hand of the operator -w'illpress said sleeve into sealing contact with said strip and seat, a piston within said airflch'amber, and a piston. rod extending rearward from'said'pis tonand beyond the rear end of said sleeve and barrel whereby the forward movement 'of fsaid piston will compress the air Within-said chamber and rupture said strip. f f a CHARLES F. LEEE lYlilR,

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