US1979963A - Popgun barrel - Google Patents

Description

Nov. 6, 1934. .A. J. DECKER ET AL POPGUN BARREL Filed Dec. 28, 1933 INVENTORG. 14777 0 Z J J. .366

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ATTORNEY Patented Nov. 6, 1934 POPGUN BARREL Arnold J. Decker and John Gora, Wyandotte,

Mich, assignors to All Metal Products Company, Wyandotte, Mich, a corporation oi Michigan Application December 28, 1933, Serial No. 704,230

2 @laims.

This invention relates to popgun barrels and the object of the invention is to provide a double barrel for a popgun which is formed entirely or sheet metal and in which the barrels are formed from a flat metal sheet having the opposite edges rolled toward the center to provide a double barrel.

Another object of the invention is to provide a double barrel for a popgun formed from a fiat l0- sheet having a longitudinal rib formed centrally thereof and the opposite edges of the sheet being rolled inwardly against the rib.

A further object of the invention is to provide a popgun barrel of the character described in which the sheets are rolled to provide a double barrel and in which rolled sheet metal cylindrical inserts are secured to provide the popgun barrel cylinders. Another object of the invention is to provide a 0 double barrel for a popgun in which each barrel is provided with a pair of lugs and a cylindrical sheet metal insert is positioned in each barrel and provided with notches into which the lugs of the respective barrel may be bent to secure the cylindrical insert against longitudinal or rotary movement in relation to the respective barrel.

These objects and the several novel features of the invention are hereinafter more fully described and claimed and the preferred form of construction by which these objects are attained is shown in the accompanying drawing in which- Fig. l is a plan view of the sheet metal blank from which the double barrel is formed.

Fig. 2 is a perspective view of the sheet metal blank showing the central rib.

Fig. 3 is a perspective view showing the opposite edges of the blank rolled in against the central rib.

Fig. 4 is a perspective view of the completed 940': barrel.

Fig. 5 is an enlarged section taken on line 55 of Fig. 4.

Fig. 6 is an enlarged perspective view of the rolled cylindrical sheet metal insert.

4 The blank 1 is shown in Fig. 1 and is provided with two slots 2 shaped to provide a pair of lugs 3 extending into each slot. In the first operation, a longitudinal rib 4 is formed centrally of the blank 1, as shown in Fig. 2, and extends in parallel relation with the opposite parallel edges 5 of the blank and in the next operation, the outer edges 5 of the blank are rolled inwardly against the central rib 4, as shown in Figs. 3 and 4, to

provide a double barrel. The double barrel is shown in inverted position in Fig. 4 and when this barrel is turned over, the depressed rib 4 provides a sight for use in aiming the gun. In the usual popgun, it is necessary to provide an air cylinder and as air would leak about the edges 5 of the double barrel, we preferably provide a rolled cylindrical sheet metal insert 6 as shown in Fig. 6. This cylinder is rolled from a sheet of metal and the edges are brought together at the seam '7 and the end of the cylinder is beveled at S to allow ready insertion of the usual popgun cork therein. On the side opposite the seam, the cylinder 6 is provided with a slot 9 having enlarged notches 10. When the cylinders are inserted in the barrels the enlarged portions 10 of the slots 9 are positioned directly beneath the lugs 3 of the double barrel portion and these lugs 3 are bent inwardly into the portions 10, as shown in Fig. 5, thus locking the cylinder 6 in place. The cylinders are normally pressed into the barrels and while they would probably remain in position, the lugs 3 look the cylinders in place and prevent longitudinal or rotary movement thereof in relation to the respective barrels.

Also in pressing the cylinders 6 in place, the edges of the cylinders are held tightly together at the seam 7 to prevent air leakage. As will be understood from Fig. 5, it is also important that the lugs 3 do not come into the inner diameter of the cylinders as this would interfere with movement of the plungers which are usually positioned in the cylinders.

From the foregoing description, it becomes evident that the device is very simple and eflicient in construction, insures the locking of the cylinders from longitudinal or rotary movement in the barrels, provides a double barrel for a popgun formed from a single piece of sheet metal with additional cylinder inserts and provides a device which accomplishes the objects described.

Having thus fully described our invention, its utility and mode of operation, what we claim and desire to secure by Letters Patent of the United States is- 1. A popgun barrel comprising a metal sheet having parallel edges, the parallel edges being rolled inwardly toward the center of the sheet to provide a double barrel, each barrel being provided with a pair of extending lugs, a sheet metal cylindrical insert in each barrel, each insert being provided with an aperture having a pair of notches and the lugs of each barrel being pressed into the notches of the respective cylindrical insert to prevent longitudinal or rotary movement of the insert in relation to the barrel.

2. A popgun barrel comprising a sheet of metal having a longitudinal rib formed centrally thererel being provided with a lug adapted to be bent of, the outer edges of the sheet extending parallel into the notch to secure the cylindrical insert with the rib and being inturned against the rib from longitudinal movement in the respective to form two barrels, a sheet metal cylindrical inbarrel.

5 sert pressed into each barrel, each insert being ARNOLD J. DECKER.

provided with a notch and each companion bar- JOHN GORA.

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