US17475A - white - Google Patents

Description

LE R. 3. WHITE.

Making Cutlery. Q No. 17,475. Patented June 2, 1857.

UNITED STATES PATENT OFFICE.

LE ROY S. WHITE, OF HARTFORD, CONNECTICUT, ASSIGNOR TO S. S. ROBERS, E. W. SPERRY, JAS. H. ASHMEAD, AND EDMUND l-IURLBERT, OF SAME PLACE.

DIE FOR PUNCHING FORK-PINES.

Specification of Letters Patent No. 17,475, dated June 2, 1857.

To all whom it may concern:

Be it known that I, LE ROY S. WHITE, of Hartford, county of Hartford, and State of Connecticut, have invented a new and useful Improvement in Punching-Dies; and I do hereby declare that the same is described and represented in the following specification and drawings sufiiciently to enable others skilled in the art to make and use the same.

I will proceed to describe the construction and operation referring to the drawings in which the same letters indicate like parts in each of the figures.

The nature of my invention and improvement in punching dies for punching fork tines and other articles requiring dies with small bars or slender parts, consists in supporting such small bars or slender parts of the tempered die, by suitable supports or dies of metal, placed under them for that purpose, having openings between or around them for the escape of the pieces punched out when the die is used.

. Figure 1, is a sectional view showing the arrangement of the lower or supporting die a,and the upper cutting die b,-and the punch-die 0,and set screws d, to secure the lower die in place. Fig. 2 is an end view showing the end of the supporting die a, and portion of the cutting die Z), and the end view of the punch die a, and set screws d. Fig. 3, is a face view of the upper cutting die 6. 0* is a face view of the punch die, the prongs of which are made so as to closely fit the apertures e, e, e, in Figs. 1 and 3. is a side view of punch die. Fig. 4, shows the face View of the supporting dies a, made so as to allow the scrap or blank easily to escape after leaving the upper die. Fig. 6, shows a side view of the supporting die a.

In using my improved dies, I first place the block in which said dies are arranged upon the bed of the press, in which they are to be used, and secured thereto by means of screws or bolts. The punch die is secured to the press in the usual manner in which most dies are fitted to presses. After the punch and dies are fitted or adjusted so as to work freely without chafing the die, I commence the operation of punching, which is done by placing the metal or stock to be punched between the dies, and giving motion to the punch by the pressure of the foot upon a treadle or otherwise in any of the ordinary ways of operating punch presses. It will at once be seen that without the aid of some support in punching stiff metal, the die will most likely fail after punching a very few times.

The object therefore of my improvement is to make the dies more durable and at the same time be used with as greatfacility as the dies more ordinarily constructed.

I am aware that cutting dies have been made in two or more parts. That manner of constructing them therefore I do not claim.

I design my improvement as peculiarly adapted to the manufacture of fork tines and on which I design particularly to base my claim. i

What I claim as my invention and im provement in punching dies, for punching fork tines and other articles requiring dies with small bars or slender parts, is

Supporting the small bars or slender parts of the tempered die 6, by suitable supports or dies of metal constructed and used substantially in the manner described.

LE ROY S. WHITE. [L.S.]

Witnesses:

HENRY FRANCIS, JEREMY W. BLIss.

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