US142506A

US142506A - Improvement in the manufacture of horseshoe-nails

Info

Publication number: US142506A
Authority: US
Publication date: 1873-09-02
Anticipated expiration: 1890-09-02

Description

' 1^. c. PAIGE.

Manufacture of Horseshoe Nails. No. 162,506. PatentedseptemberzJs,

JOHN o. rAiGn, on sronnnAM, MASSACHUSETTS.

IMPRCVEMENT EN THE ANUFACTURE OF HQRSESHQENILS.

Specification forming part of Letters Patent No.l 142,506, dated September 2, 1873 application filed y July 24, 1873.

To all whom it may concern:

Be it known that I, JOHN C. PAren, of Stone ham, in the county of Middlesex and State of Massachusetts, have invented an Improve ment in the Manufacture of Horseshoe-Nails; and I do hereby declare that the following, taken in connection with the drawings which accompany and form part of this specification, is a description of my invention suflicient to enable those skilledin the artto practice it.

In punching, from rolled plates, blanks for horseshoe-nails, and especially by the method shown in United States Letters Patent No. 128,045, dated March 26, ,1872, it is customary to cut up all of the plate Without Waste, eX- cept at opposite ends oi' each row, the plate being divided, `as seen by the lines upon the diagram in Figure 5 of said patent. This method, though seemingly perfect, is lievertheless productive of imperfect results, the difculty arising from the fact that, in punchin gblanks in succession, the heads of part of the blanks, by reason of having no supporting metal upon one side of them, and bein g sheared off at the opposite sides by the action of the punches, have a cant given to them, which causes one edge to be cut on an angle instead of by a square cut through the metal.'

To obviate this defect, I change the form oi" the punch, and the consequent head of the blank stamped by it from the plate, in such manner that, although the Shanks are divided on the lines to form the adjacent edges of adjacent blanks, the head of each blank is severed from the plate so as to leave metal on opposite sides of each head, such metal resisting the action of the punch equally on both sides, and thereby insuring a square cut at each side edge of the head. I eliect this result by making the nail-blank with rounded corners instead of with square corners, or in such manner as to leave a connecting-fin attach ed to the plate as the blanks are punched, and remaining between adj acent blanks, which fin resists the action of the punch equally upon both sides, blank.

and insures a perfectly-formed My invention consists in this method of sup porting the opposite edges of the blank-heads during the punching operation.

'The drawing represents a portion of a plate, from parts of which blanks have been punched.

' a denotes the webs or shank-forming portions of the plate 5 b, the thickeror head-forming portions thereof. c and d denote two shanks, at the respective opposite sides of which blanks have already been punched from the plate. At the point end of these shanks they are shown as uniting to iin projections e from a bar, f, and the punches are so formed as to leave this bar and these uniting pieces, connecting each blank to the plate as a blank is removed at its side, the cut that severs any head severing such head not directly from the `next head, but from the intervenin g piece. Between the opposite heads the punches take all the metal, the web portion of eachsection simply forming adjacent shanks, andbeing all utilized in such forma'- tion, while at the heads the iin portions are left. This necessitates a greater cutting action of the punch, as in cutting out the head g the punch has to ent on the line x, Whereas, in the old method, there would be only an open 'space beyond the outer line ofthe punch; but the formation of the squarely-cut head more than counterbalances the labor required to out on both sides of the head, besides which the punch has, in the old method, to out on both sides at once in one operation, and ot" course has the same power applied for the next operation, although the punch in fact only cuts at one side ofthe head.

'lhc resisting-iin is form ed by cutting the h cad rounding at the corners h, (as 'seen in Fig. 1 and at A, which shows an enlarged view ot' the head,) instead of square, as shown at E.

rIlie improvement in punching horseshoen ail blanks, substantially .as described.

JOHN C. PAIGE.

Witnesses:

FRANCIS GoULD, M. W. FRornmGHAiu.