USRE1938E - Improvement in revolving fire-arms - Google Patents

Description

W. H. ELLIOT.

Revolver. No. 1,938. Reissued Apr. 18, 1865.

-.PETER:. rNOTuLITMOGRAPHER. WAsmnmoN, D c

4INITED STATES vPATENT Oriel-cra WM. H. ELLIOT, OF PLATTSBURG, NEW YORK.

IMPROVEMENT iN REVOLVING FIRE-ARMS..

Specilicntion forming part of Letters Patent No. 33,382, dated October 1, 1861 Reissue No. 1,938, dated April 18, 1865.

i To all whom it may concern.-

Be it known that I, W. H. ELLIOT, of Plattsburg, in the county of Clinton and State of New York, have invented certain new and useful vImprovements in Breech-Loading Fire- Arms; and I do hereby declare that the following is a full, clear, and exact description ot' the same, reference being had to the accompanying drawings, forming part of this speci- `tication, which I designate as Division No. 3.

Figure 1 of the drawings is a vertical section of my improved arm, showing the lock in elevation and as it appears after being snapped. Fig.2 is a similar section, but with the trigger pushed forward preparatory to firing. Fig. 3 is an elevation of a breech-plate. Fig. 4 is an elevation of the end of a series of barrels, showing the chambers filled with exploded cartridges. Fig. 5is an elevation of a hammer and cartridge, the red lines showing the direction of certain forces at the moment of discharge. Fig. 6 is an elevation of the rear end of a series of barrels, showing projections'or anvils. Fig. 7 is a side elevation ot' the same. Fig. 8 is aside elevation of the arm with revolvingratchet on the rear end of the barrels, as shown in my patent of May 29, 1860. Fig. 9 is a vertical longitudinal section of the same, showing a revolving-pawl attached to the trigger in an equivalent way to that shown in my patent of May 29, 1860. Figs. 10, 1], and l?. show the mode of revolving the barrels by a pawl and ratchet, as in my patent of August, 1858. The

vpawl here, however, is attached to the hammer, as is most common. Figs. 13, 14, and 15 show details of the arm represented by Figs. 8 and 9, the hammer, cocking-pawl, revolvingpawl, and trigger being shown in the three positions that they assume during the process of ring the arm. Fig. 16 is a vertical longitudinal section ot' a modification of my invention. Fig. 17 is a rear end elevation of the same. Figs. 1S and 19 are a section and end elevation of a cartridge used with this modification. l

The same letters of reference in the differ.- ent figures designate corresponding parts or similar parts.

The nature of this division of my invention consists in resisting the recoil of a cartridgecase by means of a hammer which is pivoted underneath and forward of the rear end of a chamber or chambers, as will be hereinafter described.

To enable others skilled in the art to make and use my invention and comprehend the same, I will proceed to describe it with references to thedrawings. I

a is the lock-frame, or frame of the breech, being that portion of the arm to which the lock is pivoted or otherwise properly attached. This frame may be in yone piece or several pieces.

b is the barrel or barrels.

c represents the chambers with cartridges in them. These chambers are bored through at their rear ends and left open for thepnrposeot being charged in the rear.

o shows the position of the two lower cartridges in relation to the breech-plate. One of these at a time is tired by the hammer.

d is the breech-plate; e, hammer pivotcd at e underneath and forward of the rear end of saidchambers, and also forward of the breechplate d; g, cocking-pawl g', position of cocking-pawl when prepared to tire; o, point on the cooking-paw] which comes in contact with the side of the trigger and trips the hammer. his a stirrup. It is shown as furnished with two seats in the hammer; but it never wasintended with this arm to use but one scat, although two were shown incidentally. The forward seat may be dispensed with, asit serves no purpose in this arm,as will be evident from Figs. 8 and 9.

t' is a notch upon the hammer, into which the cocking-pawl falls. k isa.I mainspring. y

l, Figs. 9, 10, 13, 14, and 15, is a revolving pawl; m, a ratchet or revolving grooves on the end of the barrels; n, opening through the breech-plate for loading the arm; p, basepin, which supports the barrels and upon which the barrels revolve; r r', Fig. 5, direction lot' the recoil; 8 s', direction of resistance of the same by the hammer; tt', plane of the surface upon which the hammer acts; u, cooking and revolving pawl spring; 1;,a cut through the breech-plate to admit the tiring-point of the hammer. Y

This arm, as represented in Fig. 1, is loaded Aby passing the cartridge through the opening n in the breech-plate into the chamber c; and

to fire the arm the trigger must rst be pushed forward to the position represented in Fig. 2, when the rear end of the pawl g falls into the notch 'i upon the hammer, and as the trigger is carried back again theV hammer is raised until the side of the trigger comes in contact with the cocking-pawl g at o, in which position it is ready to tire, and it is tired by drawing the trigger still farther back, which raises the rear end of the cocking-pawl out of the notch t', and the hammer falls upon the cartridge and explodes it. As the trigger is drawn back for the purpose of tiring, the revolving-pawl, which is pivoted to it,is pushed back, and by this means the barrels are caused to revolve one-sixth of a revolution at-each motion of the trigger, each time bringing a new cartridge under the tiring-point. This is one ofthe many ways in common use of revolving armsof this description, and constitutes no part of my claim at this date.

When it becomes necessary to pass the trigger back to its place without firing it may be done by pressing upon the lower side of the cocking-pawl, when its rear end will be raised out ofthe notcht on the hammer, in which position the trigger may be carried back without raising the hammer.

To revolve the barrels for the purpose of loading, it is necessary that the point ot' the revolving-pawl should be held outof the ratchet, and also that the hammer should be raised alittle, (otherwise its tiring-point would drag over the heads ofthe cartridges,) and this may be done as follows: Push the trigger forward and place the end of a pencil through the opening x between the trigger-guard and the trigger above the pawls. Then draw back upon the trigger until the pencil is held fast. By

this means or operation the revolving-pawl will be thrown ont ofthe ratchet, and the hammer partly raised but firmly held, so that it can neither be brought to full cock nor be snapped. While the parts are in this position the barrels may be safely revolved for the purpose of loadng and cleaning.

That modification of my invention which is represented by Figs. 16 and 17 may be loaded by turning the breech-plate to the position represented by dotted lines d', and by partially cocking the hammer this opens the chamber completely for the reception of the cartridge. After the cartridge has been placed in the cham- 'ber, the breech-plate returned to its place, and

the hammer carefully let down, the arm is ready to fire, which is done by drawing the trigger Y back against the frame.

A striking peculiarity of my invention cousists in the arrangement of the pivot of the hammer and that portion of the lock-frame to which the hammer is pivoted forward of .the rear end of a. chamber or chambers, which are bored through and left open for the purpose of being charged in the rear and also forward of the breech-plate, as represented. By breechplate I mean that part of the arm marked d, against which the cartridge finally reeoils when the discharge takes place, and which is generally detached from the said chamber. This breech-plate serves the purpose of breechpin to the barrels, and can only be employed with a chamber or chambers which are bored through at their rear end, as above stated. The breech-plate may be attached to and supported upon the breech of the arm in manydfferent ways. perm ancntly to the frame in the rear of the barrels and the chambers charged through it, as herein represented, and as represented in my patent of May 29, 1860, No. 28,461; or it may be secured vwith the lock-frame by a joint to the barrels and drop down ont of the way of the chambers for the purpose of charging, as represented in my patent of same date, No. 28,460; or the breech-plate may be jointed to the rear portion of the arm, so as to be turned away from before the chamber for the purpose of openin g it to receive the charge, as represented in Fig. 16. In whatever way the breech-plate may he applied or supported in relation to the lock-frame or chamber italways serves one purpose--viz., that oftinally resisting the backward force ofthe charge---a function which is the subject of other patents of mine bearing an earlier date than this, but not earlier invented.

I will here state that the description herein given with respect to the use of a breech-plate is not intended as a limitation of my invention to a tire-arm with a breech-plate, but simply to illustrate the superior utility of my invention when such a breech-plate is used. I however,.in manufacturing arms, prefer to employ as an auxiliary to myinvention abreechplate of some sort, and hence I have described such ways as I consider the most perfect of employing a breech-plate, but not intending thereby to ever set up any claim under this patent to breechplates, but to show that my invention is capable of being used with various styles of breech-plates wit-hout changing the result which it produces.

The arrangement of the pivot or joint of the hammer, as before specified, forward of the rear end of said chambersl has many advantages. When such arrangement is employed with a cylinder of revolving barrels or chambers, as herein shown, and with a breech-plate which is located permanently in their rear, the hammer tires most conveniently one of the lower barrels, leaving the whole of the upper part of the breech-plate to be cut away or otherwise disposed of as may be most convenient for loading the arm, the whole ofthe hammer being at all times entirely ont of the way dur- For instance,it may be secured ing the process of loading, which would not be the case if it were pivoted in the rear of the chambers. A hammer which is pivoted as A herein specified in relation to said chamber,

without a breech-plate, or with a breech-plate which is jointed to the breech ot' the arm for the purpose of being turned away from before the chambers, as represented in Figs. 16 and 17, has the same advantage when cocked of being entirely below the line of the bore, and consequently out of the way during the process of loading; and in any case the employment of a hammer which is pivoted and arranged asherein shown in relation to abreechplate, or to achamber or chambers constructed as herein described, tends greatly to compact the arm and make it more durable, as well as to render its construction simple and less expensive, whether the arm be large or small or whatever be its external form.

By reference to Figs. 1 and 2, Sheet 1, it may be seen that the hammer, although pivoted forward of the rear end of an open chamber or chambers, strikes up in the rear of said chamber, indenting the cartridge-shell a little, and holds on t'o it like a hook at the moment of the discharge. A hammer arranged and operating in this way on an arm from which the breech-plate has been removed for the experiment has been found to hold on to a cartridge-shell sufficiently strong to resist the recoil, and when employed as herein shown, with a breech-plate, it performs the additional function of preventing pressure of the cartridge-shell upon the breech-plate after firing, und consequently there is less diiculty in moving the breech -plate away from before the chamber or the chambers from beforev the breechplate for the purpose of removing the spent shells and reloading. To enable a hammer so pivoted to perform the function of resisting the recoil to such a degree as to prevent pressure upon a breech-plate after firing, as stated above, it is not essential that the point of the hammer should penetrate the shell to 'hold it from slipping. The powerof the mainspriug is sufficient for this purpose, as for this purpose it is only necessary that the hold of the cylindrical portion of the shell upon the inner snrface of the chamber should be strong enough so that the pressure of the gases may bulge out the head of the cartridge a little to make it rest against the breech-plate'at the moment the pressure of the gases takes place. After the pressure has ceased the head of the cartridge-shell will to some degree return to its original form, and thus relieve the breechplate of its pressure.

The recoil of the cartridge is rearward parallel with the bore of the barrel, or, as represented in Fig.5,from r r the resistance of the hammer to the recoil of the cartridge being in the direction of s to s'. The tiring-point by the force of the blow is embedded into the copper shell, and thus produces a surface upon which it holds, the plane of which is in t t', exactly at right angles to the line of resistance o'ered by the hammer. Thus it may be seen that the hammer, without the assistance of the mainspring, would not slip down upon the head of the cartridge. Numerous experiments have proven that either with or without a breechplate the tiring-point of the hammer, when properly constructed and arranged, is never displaced by the recoil of the cartridge.

Having described my invention, I claim under this patentwithout coniinin g myself to any method of attaching or supporting the breech-plate upon the arm in the rear of the chambers, or to any breech-plate at all, or to any particular form or size of arm- Resisting the recoil of a cartridge-case by means of a. hammer which is pivoled underneath and forward ofthe rear end of a chamber or chambers, substantially as herein set forth.

Witness my hand in the matter of my application for a reissue of Letters Patent granted to me on October 1, 1861, for an -improved breech-loadiu g firear1n,this 1st day of December, 1864.

W. H. ELLIOT.

Witnesses:

R. T. CAMPBELL, E. SCHAFER.

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