US278633A

US278633A - Sheet-metal punch

Info

Publication number: US278633A
Authority: US
Publication date: 1883-05-29
Anticipated expiration: 1900-05-29

Description

(Mod-e1.)

P. W. TOEDT.

SHEET METAL PUNGH.

No. 278,633. Patented May 29.1888.

INVENTOR.

WITNESSES ATTUR'NEYS UNITED STATES PATENT OFFICE.

'FREDERIGK w. TOEDT, on ennn'woon, IOWA.

'SHEET-METAL PUNCH.

SPECIFICATION-forming part of Letters Patent No. 278,633, dated Ma .29, 1883.

Application filed January 15, 1883. (Modem 'loall whom tt may concern Be it known that I, FREDERICK W. TOEDT, of Glenwood, in the county of Mills and State of Iowa, have invented certain new and useful linprovementsin Punchcsfor Sheet Metal; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the accompanyin g drawings,which form a part of this specification, in which--- Figure l is a top view of my'im'proved punch tbrisheet metal. Fig. 2 isa side view, and Fi g. 3 is a sectional view, of the same. "I

Similar letters of reference indicate corresponding parts in all the figures.

My invention has relation to punches for sheet. metal; and itconsists in the-improved construction and combination of the same, as hereinafter more fully described and claimed.

In the accompanying drawings, the letter A indicates the bearing in which the stem B of the punch G slides. The top of this bearingis" recessed at D, the recess, inclining toward the. punch-stem, serving as a receptacle for oil. Thelower end of the stem has a screw-thread ed recess, E, into which the upper reduced and screw-threaded end, F, of the punch fits, so

that'the punch may be removed and another of-different size put in its place. The bearing A is fastened in an eye, Gr, formed by a ventrod, H, the curved ends of which are hinged at I to the ends of a bent rod, J, forming straight divergent arms upon the ends of a cross-bar, K; The rod J forms an eye, L, at its bent part, in which is fastened a disk, M, having a square or polygonous aperture, N, in which the die 0 is removably fastened, so that it may be removed and another inserted, ac-

cording to the size of the punch used. The

lower end of the punch-stem has an annular groove, P, in which the end of a spring, Q, projects, which serves to spring'the punch back again when it has been driven through the metal and is fastened upon the frame. Upon the under side of the hearing A is fastened a I foot, R, having a slot, S, to allow' the spring to pass through, which rests upon the sheet to be punched. V I

Byhinging the framethe punch maybe used for different thicknesses of sheet metal, the foot R, resting upon the sheet, holding the punch in its proper position.

Having thus described myinvention, I claim.

and desire to secure by Letters Patent. of the United States 1. A punch for sheet metal, consisting of two bars or rods bent in V shape, hingedtogether at their divergent ends, and forming eyes at their apices, in which the bearing for the punch and the die are fastened, substantially as and for the purpose shown and. set forth. f

2. The combination of the bent rod H, forming eye G, bearing A, having foot It, punch B.

G, bent rod J, forming eye L, die-disk M, and die 0, as and for the purpose shown and set forth.

3. The punch for sheet. metal,consisting of the punch 0, having reduced screw-threaded part F, stem B, having screw-threaded recess E, and annular groove I, hearing A, having recess 1), foot R, bent rod H, forming eye G, spring Q, cross-bar K, bent rod J, forming eye L, disk M, having aperture N, and die 0, all constructed and combined substantiali y as and for the purpose shown and set forth.

In testimony that I claim the foregoing as my own I have hereunto affixed my signature in presence of two witnesses.

g FREDERICK WILLIAM TOED'I.

Witnesses:

MATHEW G. BURKE, ALLIE A. QUAKENBUsH.