US146064A - Improvement in work-holding devices - Google Patents

Description

UNITEI) STATES PATENT @Prion FRANCIS E. HAHN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO OSCAR C. FERRIS AND FREDERICK B. MILES, OE SAME PLACE.

IMPROVEMENT IN WORK-HOLDING DEVICES.

VSpecification forming part of Letters Patent No. 146,064, dated December 20, 1873; ap plication lcd August 4, 1873.

To all whom it may concern:

Be it known that I, FnANors E. HAHN, of Philadelphia, Pennsylvania, have invented a Compound Retaining Attachment for Drilling and other Machines, of which the following is a speciiication: The object of my invention is to provide drilling-machines, and other metal-working tools, with an attachment which can be readily adjusted for the support and retention of the different objects to be submitted to the action of the tool; and this object I attain by a block, A, fitted snugly, but so as to be turned freely, on a pin, B, which, in the present instance, forms a part of a swinging bracket, E, adapted to the column D of a drill-press, as shown in the perspective vieW,

Figure l, of the accompanying drawing, the

sides of the block being provided with diferent appliances for supporting or retaining objects to be drilled, any of which appliances can, by simply turning the block, be brought to a position beneath the drill. One side of the block A is provided with a turn-table, a, which takes the place of the ordinary table of a drill-press. A second side is provided with the jaws b b of a vise, one being ixed and the other being movable and controlled by a screw, in a manner too well known to need either description or illustration. A third side is provided with an adjustable slotted plate, d, to which a variety of objects may be conveniently bolted, and a fourth side has a fixed head-stock, e, and sliding head-stock c', by and between the centers f f of which centered spindles, and other objects which have been turned in a lathe, may be confined by a screw forcontrolling the sliding` head-stock, in a manner which needs no explanation. The block A may be adjusted on the pin B, from or toward the column D, to any desired point, and secured after adjustment by a set-screw, w, passing through the block and entering one of the longitudinal grooves in the pin B, (see side view, Eig. 2,) there being as many of these grooves on the pin as there are sides to the block, and the grooves being so arranged, in respect to these sides, as to insure the proper position of whichever of the fourre-V taining appliances may be uppermost when the end of the screw enters a groove.

In place of a screw, a key may be used for securing the block after adjustment.

When the invention is applied to a drilli11g= machine, I prefer to so attach the bracket E, of which the pin B forms a part, to the` column or frame D, that it can be raised or lowered, or moved laterally, in the same manner as the table of an ordinary drilling machine, as it facilitates the" adjustment of the objects secured to the block in any desired position beneath the drill. When the vise attachment, for instance, is uppermost, andthe object to be operated on is confined by and between the jaws, every facility for adjustment is afforded by the lateral turning of thc'bracket E and by the sliding of the block on the pin B.

It will be evident `to those familiar with metalworking tools that my invention may be used to advantage in connection with milling-machines, shaping-machines, and other like tools.

Although I prefer, in most cases, a block,

A, with four sides, and as many dierent appliances, in many instances a block with but two or three different retaining appliances would form avaluable adjunct to a drilling or other metal-working machine, and, in some instances, an adjustable block with more than four retaining or supporting appliances might be used.

It should be understood that I do not desire to restrict myself to an adjustable block with the special appliances herein describedto the exclusion 'of others for, in some` cases, a block might have two vises differently constructed for different kinds of work, or a block may have slotted plates d, differing in character from that shown 5 in fact, the construction and style of the supporting and retaining appliances to be attached to the block will always depend upon the character of the work to be operated on by the'machine to which the block has to be applied.

I claim as my inventionl. The combination, in a drilling, milling, or other metalworking machine, rof ayertic-l al1y=adj ust-able bracket, E, its pin B, and the Q' Y mme;

block and grooves, all as set forth, for the purpose specified.

In testimony whereof I have signed my nam e to this specification in the presence of two subscribing witnesses.

F. E. HAHN.

Witnesses 'WM. A. STEEL,

HUBERT HoWsoN.

Images