US240826A - hobbs - Google Patents

Description

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(No Model.)

A. 0. HOBBS. v Machine for Heading Cartridge Shells. N0. 240,826.

Patented May 3 18811 (No Model.)

- A. 0. HOBBS,

- Machine forHeading; Cartridge. Shells.

No. 240,826. Patented May3, I881.

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dge Shells. I I nted lVlay 3,1881.

N0 Model.)

A.-G. HOBBS Machine for Heading Cart No 240,826. -'Pa W NW . UNITED STATES PATENT OFFICE.

ALFRED C. HOBBS, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THE UNION METALLIC CARTRIDGE COMPANY, OF SAME PLACE.

MACHINE FOR HEADI NG CARTRIDGE-SHELLS.

SPECIFICATION forming part of Letters Patent No. 240,826, dated May. 3, 1881.

Application filed February 17, 1881. (No model.)

To all whom it may concern:

Be it knownthat I, ALFRED 0. Homes, of the city of Bridgeport, in the county of Fairfield and State of Connecticut, have invented anew and useful Improvement in Machines for Heading Cartridge-Shells and the Like, of which the following is a description, and which, when taken in connection'with the accompanyingdrawings, is sufficientl y full,clear, I

and accurate to enable my invention to be practiced.

In machines ordinarily used for heading cartridge-shells a toggle-joint device is used for supporting, carrying, and moving that portion of the device which is carried in guides or grooves in the machine, and which receives the strain due to the heading of the shell. This strain is very severe, and it is found that in the use of such machines the greatest accuracyis necessary to enable the machine to turn out perfect work, and. that the wear of the mechanism soon renders the machine unfit for the performance of accurate work without readjustment, which requires time and careful manipulation.

My invention consists in so combining the toggle-joint device with a stop, which may, if

desired, be adjustable, that the strain may al' ways be so received by said stop as to insure the accuracy of the operation of the machine, even though a certain amount of wear may have taken place in the parts.

Figure 1 shows a longitudinal section of a cartridge-heading machine containing my invention. Fig. 2 shows a portion thereof with the toggle-joint mechanism in the doubled-up position. Fig. 3 shows a view from below of one of the members of the toggle-joint mechanism. Fig. 4 shows a section on the line D of Fig. 1, and Fig. 5 is a section on the line E of Fig. 1.

Like letters in all the figures refer to like parts.

A is the rock-shaft, turning in bearings attached to the frame B of the machine. .To this shaft, and within the trough-like frame shown at b b, is the crank C, which, by the shaft A, is given partial rotation or caused to rock.

F is the connecting-rod, which connects the crank C with the slide G. The slide Gr carries the adjustable punch g, upon which the shells are held when they are to be headed. This punch g is made adjustable by the two nuts ff.

At H is shown the die, within which the shells are supported while the head is being formed upon them.

At I is seen the hunter or device which is used to form the head of the shell, in connection with the die H and punch g. The hunter is adjustably attached to its slide K, in the same way as the punch g, by two nuts. The slide K is, in turn, connected by a pivot tothe link or connecting-rod L, and this connectingrod, in its turn, is attached to the crank formed in the shaft M, which shaft, like the shaft A, is journaled in the side frames of the machine.

, The revolution of the shaft M causes the bunter 1 to be reciprocated to and from the position it occupies, as shown in Fig. l, and the partial rotation or rocking of the shaft A causes the punch to .he alternately moved back to the left, out of the die H, and again into the die H, carrying upon it an unheaded shell at each forward stroke.

the connecting-rod F, is seen in the position 8 which it occupies when. the hunter I is heading a shell and the strain is being received through the toggle-joint mechanism.

At Fig. 2 the toggle joint mechanism is shown when rocked upward or bent, and when 0 the machine is in the act of being fed with a shell upon the receiver Y, and before the shell is carried by the punch g into the die Hi. When the machine is in the position shown in Fig.

1, and the hunter I is heading the shell h upon 9 5 the punch g, a very great strain is received by the togglejoint mechanism, which strain is transmitted through the punch g and the f slide Gr.

I have discovered that by attaching a block, 1 co N, to the bed of the machine, as shown in Figs.

1, 2, and 4, I am enabled to so receive the strain upon the parts as to insure steadiness and certainty as to the location of the punch g in relation to the die H and hunter I. As seen in Figs. 1, 2, and 4, the block Nis shown as upon a slight projection, n, rising from the base of the machine, and having between the bottom of the block N and the upper surface of the projection 02 the beveled piece 0, ad-

justable in relation to the block N by a setscrew. Two clamp-screws, c and e, operate to hold the block N in the desired position upon the frame of the machine, and which are loos- 'ened to enable the adjustment to be made, the

beveled sliding piece 0 being slotted for the passage of the set-screws c and e. The upper portion of the block N is formed, shown, with a semi-cylindrical depression, as seen in Figs. 1 and 2. This semi-cylindrical depression should preferably correspond in shape with the semi-cylindrical end of the connecting-rod. F, so that when the center of the pin X, which connects the connecting-rod F with the crank 0, has passed slightly below a line drawn through the center of the shaft A and the center of the other pin of the connectingrod F, said end of the connecting-rod F will rest upon the semi-cylindrical depression of the block N, and in this way the strain due to the forming of the head of the shell by the hunter I will be mainly received by the block N, and the slight Wear incident to use will not affect the accuracy of the machine.

It is intended that the toggle-joint arrangement'and the stop N should be so adjusted in relation one to the other as that but a very slight passing of centers will be necessary.

Many other means of adjusting the block N will suggest themselves. to an ordinary mechanic, and, indeed, the machine may he made serviceable and useful without any adjusting device in connection with the block N whatsoever.

rocker-shaft A,) showing 110w said crank is cut 5 out at the under side to admit of the resting of the end of the connecting-rod F upon the surface of the block N, and also so as to permit of its being operated in connection with the connecting-rod F. This stop device, in connection with the toggle-joint arrangement, is useful in many devices other than cartridgeheading machines, and 1 have merely shown it in connection with this machine for the purpose of giving an illustration of its utility in connection with one form of mechanism.

The width of the block N, as shown in Fig. 4, should not he so great as to prevent the arms 0 c of the crank 0 from passing the sides of the block, and the adjustment of the operating devices must he so arranged and connected as at the end of the stroke to bring the end of the connecting-rod F into contact with the block N firmly, but without a severe blow or ar.

What I claim, and desire to secure by Letters Patent, is-

1. The combination of a toggle-joint mechanism, consisting of a crank, rocker-shaft, and connecting-rod, and a stop combined therewith, and arranged in the proper relation to such toggle-joint mechanism, for the purpose substantially as herein stated.

2. The toggle-joint mechanism consisting of an operating-shaft, a crank, and connectingrod, combined with an adjustable stop, arranged substantially as herein described.

ALFRED O. HOBBS. [L. 8.]

Witnesses SAML. T. HOUGHTON, J. L. PARRAGA.

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