US351747A

US351747A - dimon

Info

Publication number: US351747A
Authority: US
Publication date: 1886-11-02
Anticipated expiration: 1903-11-02

Description

4 Sheets-Sheet 1.

o. A. R.-D1MON. CARTRIDGE SHELL vTRIM'MING- MACHINE. No. 351,747.

-(N0 Model.)

Patented Nov. 2, 1886.

)wm @4km (Nb Model.) y4 sheetssheet 2.

0. A. R'. DIMON. GARTRIDGE SHELL TRIMMING MACHINE.

Nn. 3515/'47. Patented Nov. 2, 1886.

Wimasm Mw @mm (No Model.)

' l 4 sheets-sheen s.

C., A. R. DIMON.

Patented Nov, z, '1886.-

rwiaaga l Xw @km I f c-M f N4 PETERS. Pnalwuxhagmpher, wzsningmn. u c.

(Hommel.) 4 Sheetssheet 4.

1 v G. A. R. DIMON. GARTRIDGB SHELL TRIMMING MAGHINE.

No. 351,747. -Paented Nov.. 2, 1886` Wmema v' 4 UNITED STATES PATENT OFFICE.

CHARLES A. R. DIMON, OE LOWELL, MASSACHUSETTS, ASSIGNOR TO THE UNITED STATES CARTRIDGE COMPANY, OF SAME PLACE.

CARTRIDGE-SHELL-.TR-IMMING- MACHINE.

SPECIFICATION forming part of Letters Patentl No. 351,747,dated November 2, 1886.

`Application filed September 6, 1886. Serial No. 212,806. (No model.) l

. have invented a new and useful Machine for Trimming Cartridge-Shells, of which the following is a true and complete specication.

My invention relates to machines for trim-l ming orutting oft' the ends of cartridge-shells; and it consists in certain. new and useful constructions and combinations ofthe several parts thereof, substantially as hereinafter described and claimed.

In the drawings, Figure l s a side elevation of a machine for trimming cartridges provided with my improvements. Fig. 2 is a top plan view of the same. Fig. 3 is a section of the same on the line X X of Fig. 1. Fig. 4 is a detail view of the clutch or dogand my auxiliary cutter, showing the several positions of the latter. Fig. 5 is an end view of the clutch. Fig. 6 is a side view of a cartridge-shell before being trimmed or cutoff in the machine. Fig.

`7 is a side view of the same, partly in section,

showing the shell when trimmed as heretofore in the machine; Fig. 8 is a side view of the same, partly in section, showing the shell when trimmed and operated upon by my auxiliary cutter.

A is the bed-plate of the machine, supporting at one end of it a standard, Al, throughwhich reciprocates back and forth theplunger a and the sleeve a. Near the other end of the bed-plate are two standards or uprights, A, supporting boxes at their upper ends, in which revolves the hollow mandrel M, driven bythe pulley M from a suitable counter-shaft. mandrel has a bore through its center of sufficient diameter to allow the shell to pass through it, as shown in Fig. 4. i Y

A post, a2, is fixed rigidly in the bed-plate, and has passing through ita screw, c3, tapped into it and resting against the sliding standard A3, attached to the bedplate. t The upper end of the standard A3 its into the 'groove a* around the mandrel M, and by setting up the screw (t3-the standard A3 is made to take the thrust of the mandreloff from the boxes in the standards A2 A2 and relieve them.

B is an .inclined guide or feeding trough, attached at its lower end to the block A4, the

This,

latter resting upon the bed-plate A. In the upper surface of this guide isa groove, b,which receives the shells sidewise and allows them to slide down into position to be operated upon one after the other as they are taken away by the plunger a5 from its lower end.

The plunger a5 is round in cross-section and of the proper size to fit the inside of the cartridge-shell at its outer end, and it is fixed in the plunger a and moves with it. These plungers are reciprocated (longitudinally by any suitable and well-known mechanism, .and the plunger a5 passes the groove Z) in the feedingplate B in proper relation thereto to enter the lowermost cartridge-shell which has been fed downward through the groove and rests against an abutment opposite the lower end of thelatter. The plunger a5 is'aXially in line with the mandrel M, the latter provided on its inner end with a dog for grasping the cartridge-shells. (Shown in detail in Figs. 4 and 5.) On the mandrel M is placed a slidingsleeve, m, having a conoidal surface upon one end, over which the ends of the bent levers on m are brought to bear, as shown. These levers are pivoted at m2, and carry-upon their opposite ends the blocks mof segmental forn1,itted on their inner surfaces to embrace the car- 1 tridge-shell shown at s, Fig. 5, in 'end view.

The sleeve mis moved longitudinally on the' mandrel M by the lever m, which is pivoted 'at one end upon the vertical pivot m5, and em- .the larger portion of its conoidal surface' against the ends of thelevers m resting thereon, and closes the blocks mf around theV cartridgeshell, grasping the latter iirmly.

The block A1 has a dovetail groove cut in its upper surface at right angles to theaXis of lmandrel M. In this groove is fitted a sliding plate, c, upon which is fixed thek upright toolpost c', carrying the cutting-off or trimming tool c2. A set-screw, c3, in the top of the post serves to bind the tool in its slot therein in the usual manner. Vhen the plate cis moved toward the mandrel M, the cutting-off tool c2 just passes the faces of the blocks m3 m3 of the clutch,which grasps the shells. In the rear of tool-post c another upright post, c", is xed in plate c, having a hole through it parallel with mandrel M. Through this hole passes a screw-threaded shaft, c5, having nuts c( c engaging with'it on each side of post c, toadjust and clamp it in the post. This shaft carries in its end toward lever m4 a roller, c7, pivoted in its bifurcated end, which roller bears against the edge of the lever. The edge ofthe latter' is 'formed of a suitable cam shape where the roller bears against it, so that as the tool c and its carrying-plate c advances toward the mandrel M the roller will move lever 'mAk away from tool c?, and thus close the clutch-blocks m3 m upon the shell, and hold it rmly while the tool is cutting it oil".

A vibrating level', N, is pivoted to the bedplate ofthe machine at n, aud attached at one end by a pivot to the sliding plate c, the other end being moved bya suitable crank or other mechanical equivalent working in slot n. Vhen the plunger e is moved forward, it carries its supplemental plunger a5 through the lowermost shell, s, at the lower end of the groove b, to the closed end thereof, and carries the shell Vforward between the blocks m m of the clutch. At the same time the tool-carrying plate c moves forward, gripping the shell in the clutch at the propel' point,and cutting it off with tool ci.

So far as described the above machine is well known and in common use, and I have describedit so far as is necessary to understand 'my improvement, further description of its mechanism being unnecessary to its being understood by thosefamiliar with such machines. When the tool c2 cuts off the cartridge-shell, as shown in Fig. 7, it i'orms a slight burr on the cutoff' end, projecting radially inward around lhelatter. This burr has proved troublesome in the subsequent processes of introducing the ball into the shell and crimping the latter around it, because it did not allow of that closeness of fit of the ball which is desirable. Even when removed, the thickness of the metal at the edge cut off by tool c is disadvantageous in crimping it into the metal of the ball, or a groove therein, to secure the shell and ball together.

Myimprovement consists in providing an auxiliary cutting-tool working,in combination with the one before described,to cut away the burr formed by the latter while' the shell is still held by the blocks m m, and to bevel out the edge of the shell at its cut-off end,as shown at si, Fig. S, making it much thinner at its eX- treme outer edge,whereby it can be more perfectly crimped onto the ball, and allows the latter to enter it easier and with a tighter it, and lforms a more perfect junction between them.

E is the auxiliary cutting-tool, pivoted to the face of block A1 at c upon the bell-crank lever c', to one arm of which it is attached. The other end of lever cis attached to the lever ci by a pivot, c", working loosely in a slot in the latter and iiXed in the end of the former to give the requisite play to the levers. Lever .ready for crimping upon the ball.

c2 is pivoted to a short standard attached to the bed-plate at c", and has its other end made cam-shaped on the'upper edge, as shown in Fig. l. A spiral spring, t, attached to this short standard at one end and to the tool-carrying arm of lever e' at the other, draws the latter back'ward from the mandrel M. Anothcrspiral spring, t', between the free end of'` lever ci and the bed-plate, serves to lift that end ofthe lcver to the proper position.

Attached to the sleeve a', and sliding to and fro with it, is the lug or ear a", through which a vertical screw-threaded hole is made, with which the screw-thread of the vertical rod cT engages. A check-nut, ai, on this rod serves to bind it in the proper position in the car. The lower end of' the rod e7 is bifurcated, and has the roller a pivoted between its bil'urcations in position to bear upon the upper calnshaped edge of the lever e2, when the sleeve a is dra-wn backward from the mandrel lll a sufficient distance and depresses the lever at that end. This movement turns the bell-crank lever c on its pivot and throws the tool E forward into the cut-oitl end of the shell at the proper angle to form the bevel e2 on its edge. cutting oit' the burr on it formed by the tool c'l in the operation,and leaving the shell as shown in Fig. 8. During this process the shell has remained firmly gripped by the blocks m'" mi and continues so gripped until the sleeve c moves forward again to the position shown in Fig. l. Willen the tool E is withdrawn, the plunger a carries forward'the next shell into the clutch, the sliding plate at the same time carryingback tool ci and releasing.,r the finished shell,pushing the finished shell into the hollow of the mandrel beyond the clutch. The sliding plate c again advances, causing the clutch to grip the newr shell and the tool cL to cut it off, while the sleeve c goes backward, withdrawing plunger e and bringing forward tool E,to bevel out the end of the shell. The shell is thus trimmed and beveled at one operation, Fig. .l shows the tool E in the act of bevcling out the shell, and the position ol' the tool when withdrawn, 'in dotted lines. The tool is secured in the arm of lever c by means of the sleeve ew,attaehed to the arm, into which the shank ol" the tool fits so as to slide in and out, and a setscrew, c, passing through the side of the sleeve and tapped therein. This construction enables me to adjust the tool E accurately to its working position.

It is evident that the roller c may be dispensed with and the rod ai bc allowed to come directly in contact with lever c`',il' desired. [t is also evident that either of the springs 't or t' maybe dispensed with and the other used alone, if preferred; butIprefer to use both forgreater certainty and quickness of action.

XVhat I claim as new and of my invention 1s- 1. The combination of the revolving shellgripping clutch provided with the radiallymoving blocks mi" m", substantially conforming IIO . and mechanism for moving the same in and to the exterior of the shell on their inner faces, and mechanism for moving the 4same in and out, the cutting-off tool c2., mounted on guide- Ways and adapted to move past and in proximity to the face of said clutch transversely to the axis of rotation of the latter, and the reciprocating beveling-tool E, mounted upon a carrier, and adapted to enter the open end of the shell While the latter is held by the clutch and trim or bevel off the inner part ofthe edge thereof, substantially as described.

2. The combination of the revolving shellgripping clutch provided with the radially-` moving blocks m3 m, substantially conforming to the exterior of the shell on their inner faces,

out, the cutting-off tool c2, mounted on guide-l Ways and adapted to move past and in proximity to the face of said clutch transversely to the axis of its rotatiom'the pivoted lever e', and the tool E, carried thereby, and adapted to enter the open end of the shellwhile the latter is held by the clutch and trim or bevel off the inner part ofthe edge thereof, substantially as described.

3. The combination of the revolving shellgripping clutch having the radially-moving blocks m m3, of proper conformation to embrace and hold the shell, and mechanism for opening and closing the same, the reciprocating shell-carrying plunger a a5, the 'pivoted lever e', and the tool carried thereby and adapted to enter the open end of said shell after the plunger-is Withdrawn therefrom and trim or bevel off the inner part of theV edge thereof, substantially as described.

4. The combination of the revolving shellgripping'clutch having the radially-moving blocks m3 ma, of proper conformation to embrace and hold the shell,A and mechanism for opening and closing the same, the reciprocat- E ing shell-carrying plunger a a5, the tool E, the

pivoted-lever e', the pivoted lever e2, connected to lever e', and the rod al, connected to the plunger, and adapted to move the tool E forward within the shell by contact with lever e2 onthe backward movement of the plunger, substantially as described.

5. The combination of the revolving shellgripping clutch having the radially-moving blocks m3 m3, of proper conformation to embrace the shell and hold it, and mechanism for opening and closing the same, the reciprocating shell-carrying plunger a a5, the tool E, the pivoted lever e', the pivoted lever e2, connected to lever e', therod al, connected to the plunger, and adapted to move the tool E for- Ward within the shell by contact with lever eIl on the backward movement of the plunger, and the retracting-spring t or t', connected to.one of said levers, substantially as described.

6. The combination of the revolving shellgripping clutch having the radially-moving blocks m3 m3, of proper conformation to embrace and hold the shell, and mechanism for opening and closing the same, the reciprocatingjshell-carrying plunger a a5, the pivoted lever e', the tool E, carried thereby, and adapte'd to enter the open end of the shell after the plunger is Withdrawn therefrom and trim or bevel off the inner part of the edge thereof, and the retracting-spring t, connected to said lever, substantially as described.

7. The metallic cartridge-shell s, forlned'and prepared for crimping upon the bullet, substantially as described-tliat is to say, with the inner part of the edge thereof at its open` end trimmed or beveled off, substantially as' described.

CHAS A. R. DIMON.

Witnesses: J As. B. RUssELL, ALBERT W. DAVID.