US712482A - Hand-punch. - Google Patents

Description

LUNITED STATES PATENT OFFICE.

VILLIAM A. BERNARD, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO THE WILLIAM SCHOLLI'IORN COMPANY, OF NEW HAVEN, CONNECTICUT, A` CORPORATION OF CONNECTICUT.

HAND-PUNCH.

SPECIFICATION forming part of Letters Patent No. 712,482, dated November 4, 1902.

To all whom it may concern:

Be it known that I, WILLIAM A. BERNARD, of the city and county of New Haven, State of Connecticut, have invented a new and useful Improvement in Hand-Punches, of which the following is a full, clear, and exact description when taken in connection With the accompanying drawings, which form a part thereof, and in which- Figure l represents a side elevation of a punch embodying my invention; Fig. 2, a longitudinal vertical section of the same, the jaws being shown closed; Figs. 3 and 4, perspective views of one jaw and the stripper I5 of the punch, respectively, shown detached;

and Fig. 5, a similarviewof the spring.

In all figures similar letters of reference represent like parts.

This invention relates to hand-punches, and 2o has for its object the production of a novel,

simple, and efficient punch having the various improvements and combinations of parts hereinafter described.

Referring to the drawings for a more par- 2 5 ticular description, the parts designated by the letters A and B represent the handlelevers of the "punch, which in general form resemble those shown in prior Letters Patent of the United States, granted to me May 6, 3o 1890, numbered 427,220, in that they are formed of sheet metal and are each provided at their forward ends withtwo flat parallel plates ct and b, the plates of one handle pass-j' ing between those of the other handle and 3 5 being fulcrumed thereto at C. v

D and E represent jaws pivoted to the forward ends of the plates a and b at d and e and at their rear ends extending into the hollow interior of the handle-levers, with which 4o they have a sliding connection, (herein shown as slots d and e' and pins a' and b,) so that the opening or closing of the handle-levers imparts to the jaws a movement parallel to each other.

F is a spring (a flat steel band) bent to the form particularly illustrated in Fig. 5, having a curved portion G and a comparatively straight portion'H. One end of the spring is secured by a screw f or other means to one of 5o the handle-levers, as A, and the other end the jaw E is also moving forward at substani tially the same rate, by bearing the free or movable end of the spring on the jaw or member thus movable in the same manner any friction or wear is obviated. The only movement of the free end of the spring in its relation with the jaw is a turning or swivel mov'ement of the end of the spring on the jaw. K is a punchsecured to the jaw E at right angles thereto, and `L is a corresponding perforation in the jaw D, whereby on the closing of the jaws the punch enters the perforation L to perforate any paper or other article placed between the jaws.

M is a substantially flat Vstripper-plate formed separate from the jaws and adapted to be secured to the jaw D by a screw m or other means. The stripper has a perforation N, registering with the perforation L in the jaw D when the stripper is secured to the jaw. A recess O is provided between the stripper M and jaw D, as in the under side of thejaw, for the insertion of the article to be punched;` but when'it is desired to punch an article or articles of greater thickness the stripper may be removed and through the presence of a further recess, as P, in the other jaw more space obtained for the insertion of `the article. Further, when the punch becomes dulled the stripper M may be removed and the end of the punch `filed or-otherwise brought to a proper edge again without de taching the punch itself.

I-Iaving now described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In a tool of the plier type, the combination with lever-handles; of a jaw having a sliding connection with one of said handles; and a flat, curved spring connected to said jaw and one handle, substantially as detion with lever-handles; of a jaw having a sliding connection with one of said handles; and a flat, curved spring* connected to said jaw and the other handle, substantially as described.

3. In a tool of the plier type, the combination With lever-handles fulcrumed together;

of a member pivoted to one of said handles and having a sliding connection with the otheI1 handle; and a spring connected to said member and to the handle With which said member is pivotally connected, substantially as described.

4. In a tool of the plier type, the combination With hollow lever-handles fulcrumed together; of jaws each pivotally connected to WILLIAM A. BERNARD.

Witnesses:

WILLIAM R. PITKIN, SAMUEL H. FISHER.

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