USRE3423E - Improved machine for - Google Patents

Description

tnwdiw @MW @itin BENJAMIN s. indiinrs; 0F, THE UNITEDn STATES ARMY Letters Patent No.- 87,593, deted'Ma/rch 9, 1869i l(reissue No.'l 3,423,'da,te1 May 4, 186i). A Y

- mueven momma PoR, AND ME'rHoD o cmnz:s'smc+ calumnias-santas ro A The lSchedule Inferred to innig-:ese Letters P atem: and ranking of To all 'whom i12-mcy concern; Be it known that I, BENJAMIN S. ROBERTS, of` the UnitedStates Army, have invented a new and useful Improvement in the Manufacture of Cartridge-Gases; and I do hereby declare the following to he a full and exact description thereof, which will he better underhyreference to the accompanying drawings. Itis very important, whenever lmetallic cases of any kind'are used, that. such cases, as well as the chamber in which they are to be exploded, should 'be slightly ta pered,f.s0, that when retracted ever so little, they will be loosened, and become easily removed from the chamber. v f i I propose to construct the cartridgecases in a cylindrical shape, which is readily-"done It is then of the form shown in Figure 1.

Itis then inserted in the die A, Figure 3, in -which there -is a tapering aperture, made a shade larger at the. top than the external diameter of 'the `cartridgecase, iig. 1.

A plunger, B, .worked hy the eccentric-s .E E, then l i presses the case into the die, which gives it-the desired taper, and is, moreover, sure 'to make them all of precisely the saine size and shape, lwhich is found of great advantage when they come to be used. I

` The cartridge-mise being forced home, as shown in Figure 4, a cylindrical projection, f, upon-the plate or follower C, is.then elevated, by the cam D, audfraises the tapered case fromits seat, when it am he readily removed, and another substituted in its place.

My machine shows the method of pressing the shell into the tapered die by a follower', thatrtakcs on *the base of the cartridge; but I claim the iight to have the die in the follower, and to'taper by 1thereverse means, setting the cartridge .on its 4hase or head, 'and pressing the follower down on to the shell, instead of pressing the shell, by arfoliower, into the-die.,

l am aware that George Wilson, in his. patent of 1858. .shows a cartiidfre-sheli, of a; taper-shape, in his drawings, though he claims. no advantage from that shape, makes no mention of it in his specification, and there is' nothing to show whether or how he ever manv ufactured oneof those shells. His shell was, besides,

made open at both ends.' 'It was not intended to re ceive the fulminate iny its flange, and even thatiiange j itself was not sostrengthenedandsustained as to serve for the retracting pin to seize hold of, in order tio-start it from its seat in the chamber.

I do not claim anything that is thus. shown.

.I amalso aware of the patent of Hiram Berden,-

'dated February 27, 1866, in which he proposes, by the use. o f a' die, to contract the open end'oi` his cartridgeease, so as to grasp the'bnllet; but he not -only has a solid body within his case, upon which it may he'con-l I tracted,but contemplates .the application of a blow, which would he fatal to the object proposed by me.

Berdan proposes only to contract the open end of his caitiidge-case, while I contemplate giving it a uniform taper from end to end.

I make noclaim to anything patent.

Finally, Fam aware that S. W. iVood, in his patent of 1862, and William J olrnsouin his patent of nearly t'he same date, suggest the idea of a taper-shaped metallic cartridge-case, but they. show no way in which such 'cases can he constructed successfully.. Their inventions rest merely in idea. I do not pretend to he lthe, first ever to have conceived-such an' idea, but only the first to have' made it practical.

Having thus'restricted the'scope of whatvI deem my invention, l

I'elaim, eonjoiritiy, the hereinbefore-described -machine for, and method oftapering metallic cartridge- -shells throughout their entire length, in the manner shown. f Witnesses: B. SJRQBERTS.

E. W. Ammnsos, p

JULIUs HmsoH.

found in Berdans

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