US223472A - Machine for making eyebolts - Google Patents

Description

R. H. BRIGGS & J. H. DOUGHERTY. Machine for Making Eye-Bolts.

No. 223,472. Patentedlajn. 13, 1880,

WITNESSES: INVENTOR: CZ W I NEYS UNITED STATES PATENT OFFICE.

RICHARD H. BRIGGS AND JAMES H. DOUGHERTY, OF WHISTLER, ALABAMA.

MAOHIN E FOR MAKING EYEBOLT S.

SPECIFICATION forming part of Letters Patent No. 223,472, dated January 13, 1880. Application filed September 12,1879. 1

To all whom it may concern i Be it known that we, Brennan H. BRIGGS and JAMES H. DOUGHERTY, of Whistler, in the county of Mobile and State of Alabama, have invented a new and Improved Eyebolt- Machine, of which the following is a specification.

Figure 1 is a front elevation of the machine. Fig. 2 is a plan of a portion of the machine on line as, Fig. 1. Fig. 3 is a front elevation of a portion of the machine. Fig. 4is a rear elevation of the dog, hanger, and crank. Fig. 5 is a vertical section of the dog on line 3 y,

Fig. 4.. Fig. 6 is a view of an eyebolt as made by the machine.

Similar letters of reference indicate correspondin g parts.

The object of this invention is to provide an improved machine that may be operated by hand or other power for the manufacture of eyebolts of any required dimensions In the drawings, A represents the base of the machine; A, the legs, and A the horizontal table. B represents the vertical frame. 0 is a projection having a socket, and is bolted against the face of the frame B, and holding "and guiding the movable clamping-jaw D.

The prolongation or shank of this jaw D projects downward through a slot in .the table A, and to its lower end is secured a weight, E, to keep the jaw D retracted. To this prolongation of the jaw D also is pivoted a lever, F, that is fulcrumed in the swinging bar F, which bar F is pivoted on a lug, a, that is secured on the under side of the table A,

This leverF is connected with a lower lever,

F, by the connecting-rod F, and the lever F is fulcrumed in a post, F,' that is fixed on the base A.

G is the stop, held to the frame B by bolts or screws, and made laterally adjustable by means of the slots 12 6, through which the bolts pass, and this stop G is provided with a projecting finger, s. H is the adjustable gage, movable in the slot 0 in the frame B.

The clamping-jaw G performs the function of a stop to the jawD in its upward movement. If the stop G were moved so that finger S was brought in contact with the manmandrel K moves horizontally in the guidingthimble L, that is fixed in the frame B. This socket I is pivoted on a lever, I, that in turn is fulcrumed in the stud I, that projects horizontally from the frame B.

On the opposite side of the frame B from the socket I and its attachments, and near thetop of the said frame B, is fastened a projecting and downward-bent hanger, M, that supports a shaft, N, oxi the inner end of which shaft N is the dog 0, provided with the finger 9, adjustable on said sha t by means of the slot d and screw f, and the dog-O is held in position by thenut P on the inner end of the shaft N. On the outer end of this shaft N is secured a crank, Q, to which power is applied to operate the dog 0.

In operating the machine, the stop G and the dog 0 are first adjusted to suit the length of the rod that is to be used for eye-bolts, and the gage H is adjusted to suit the length required to'make the circle of the eye on the bolt. The machine is then ready for work, and the rod on which the eye is to be made is heated and placed in themachine over the clampingjaw D, over the finger g of the dog 0, and under the mandrel K until it touches the gageH. The foot is then placed on the bend m, shown in the eyebolt in Fig. 6. The I crank Q is then reversed, and the finger g of the dog 0 made to force the rod around the mandrel K to form the circle of the eye. Then the pressure is removed from the lever F, the mandrel K is withdrawn by the lever I, the

2. The combination of the stop Gr, clampingjaw D, and gage H with the dog 0 and mandrel K, substantially as herein shown and de- I 5 scribed.

RICHARD HENRY BRIGGS. JAMES HENRY DOUGHERTY.

Witnesses:

EDMUND HANG, L. ORABTREE.

Images