US182857A - Improvement in machines for burring cartridge shells - Google Patents

Description

'e'. P) SALISBURY & cfs. WELLS.

MACHINES FOR BURRING CARTRIDGE SHELLS.

No.182y857. .Patente-d C'J'c:'c..3,1875.

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IMPROVEMENT IN MACHINES F'R BURRING CARTRIDGE' sHELLs.

AugustS, 1876.

vTo all whom 'itmay concern:

`Be it known that we, GEORGE P. SALIs-V BURY and CHARLES S. WELLS, of New Haven, in the county of NewHaven and State of Connecticut, have invented certain `Improvementsl in Machine for Burring Cartridge: Shells, oflwhich the following is a specification: v Y

Our invention consists in a device for burring cartridge-shells, as hereinafter explained.

In thedrawings, Figure 1 is a side view of our improved device,the lower portion being clamping the head of the shell 5 Fig. 2, a similar view, showingthe device raised up clear of the shell; Fig. 3, an end view of the device; and Figs. 4 and 5, respectively, an end and sectional view of a shell enlarged;

This invention relates to the manufacture of that class of cartrid ge-shells which are pierced in the head in one or more places', in order that the fire from the c ap or primer may take effect upon the powder contained in the shell. Shells of this class are usually formed with a pocket or recess in the head, as shown in Figs. l, 2, l, and 5, in which is seated the cap or primer, the fire from the primer passing through small holes to the interior of the shell, as shown. The tools which punch these holes in the head or pocket of the shell cut therefrom small disks r, Figs. 1 and 5, which are generally detached from the shell in the act of punching the holes. If, however, these disks remain attached at any point of their periph` ery to the shell, either through not being completelycut, or by adhesion, or remain upon the shell exteriorly or interiorly, as they are liable to d0, aided by such lubricating material as it may be found necessary to use, they interfere with subsequent operations of manufacture, and will often disable the gun in which the cartridge is used by falling into its mechanism. Itis, therefore, of great imupon the shell, and it is for their removal that the present device is designed. To `accomplish this object the shells J are mounted upon pins H of a revolving dial, I, in the usual 82,857, dated october 3,1876; appiitanonmea manner, with the `differencethatinstead of being made solid, 4as is. customary, the pins H are made hollow, as shownin Figs. l and 2.

These pins are provided at their upper ends with one ormore 'small holes corresponding to the holes pierced in the head of the shell,

,the holes in the pins opening into the hollow interior of the same, as shown. Before coming to the burring device the shells pass under the punching mechanism and the heads are pierced, such of the disks c' as are detached from the 'shell passing through the small holes in the top of the pins.,and through the hollow pins into a suitable receptacle `placed below. Such of thedisks r as remain attached to the shell will` project down into the holes in the top of the pins, as shown in Fig. 1. With the shell in this condition the pin H is carried around by suitable operating mechanism until the shell comes` directly `under the burringmechanism. This mechanism consists of a hollow cylinder, B, securely and rigidly mounted in the reciprocating headblock A of the machine, and provided with a spiral slot, L. Working in the hollow cylinder B is a second cylinder, G, which has a vertical movement therein, and is furnished near its upper end with a projecting stud or pin, M, working in the slot L of the cylinder B, as shown in Figs. 1 and 2. The cylinder Gis hollow through the greater part of its length, and carries in its lower end a plunger, G, which is forced outward by a spiral spring, g, as shown in Figs. l and 2, the outward movement of the plunger Gr being limited by a stop-screw, n. The cylinder() is formed with an enlargement or head, D, at its lower end, as shown in Figs. l, 2, and 3, which is provided in its lower face with a circular recess, K, just largeenough to freely admit the flange of the shell to be operated upon, and with two pivoted jaws, E, opening into the recess K on opposite sides, as shown in Figs. 1, 2, and 3. These jaws are forced outward from the block or head D by means of spring s seated in the block D, as shown. The shell J being brought directly under the burring device, as already described, the head-block A of the machine is caused to descend, carrying the burring .mechanism with it. As the head-block A descends, the plunger G, coming in contact with the head of the shell J, is prevented from descending farther, and the cylinder C rides down over said plunger, causders, and resting one end against the under side ofthe head-block A, and the otherend against the upper side of the block D, as shown in Figs. 1 and 2; but as the block D comes solidly against the head of the shell J, the downward movement of the block'D and cylinder C is arrested, and the continued downward movement of the head-block A, causing the hollow cylinder B to pass down over the cylinder C. The spiral slot L, Working on the pin M, causes the cylinder C, with its head or block D, to rotate. It will be seen that, as the jaws E clamp the shell firmly, the shell will also be caused to rotate, and the burrs or disks r, coming against the edges of the holes in the end of the stationary pin H, are rubbed or sheared oft', and, falling down through the hollow pin,are caught in a suitable receptacle, which, as before stated, is placed below. The head-block A, having by this time reached the limit of its downward movement, begins to ascend, and the spring F keeping the block D pressed outward, the cylinder C and the shell J are rotated in a reverse direction, thus insuring the removal of the disks. This4 rotation continues until the pin M comes in contact with the lower end of the slot L, by which means the outward motion of the cylinder O and block D is limited, when they also commence their upward movement. As the block D travels away from the pin H, the springs s force the jaws E outward, causing them to release the ange of the shell, when the plunger G, acted upon by the spring g, forces the shell out of the recess K, and on to the pin H.

This forms a very simple, cheap, and efficient device, and one not easily disarranged. By attaching it to the same head-block that carries the pins for punching the holes, the burring may be automatically performed on each shell at the same time that another is being punched, thus saving the use of a separate machine and a separate operation for set forth.

GEORGE P. SALISBURY. CHARLES S. WELLS. Witnesses to GEORGE P. SALISBUBY:

E. W.`CRozIER, WM. SOHAUMLEFFEL. Witnesses to CHARLES S. WELLS:

DANIEL H. VEADEE, T. L. BENNETT.

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