US349993A

US349993A - hamilton

Info

Publication number: US349993A
Authority: US
Publication date: 1886-09-28
Anticipated expiration: 1903-09-28

Description

(No Model.)

I. O. HAMILTON.

PAPER FASTENER.

Patented Sept. 28, 1886.

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INVENTOR f'McZ dfizzmiltan- WITNESSES:

aflzfm/x ATTORNEYS N. PETERS, Pnuko-lilhngnpher. Washington D. Q

UNITED STATES PATENT OFFICE.

OF NElV YORK, N. Y.

PAPER-FASTENER.

SPECIFICATION forming part of Letters Patent No.349,993, dated September 28, 1886.

Application filed March 25, 1886.

To all whom it may concern:

Be it known that I, FRED O. HAMILTON, a citizen of the United States,residing at Brooklyn, in the county of Kings and State of New York, have invented new and useful Improve ments in Paper-Fasteners,of which the following is a specification.

This invention relates to devices for fastening together sheets of paper; and it has for its object to provideanovel paper-fastener wherein diverging cutters serve to sever the papers as the fastener is passed through the same.

The invention consists in the construction of paper-fasteners, hereinafter described and claimed, reference being made to the accompanying drawings, in which Figure l is a metal blank for the improved fastener. Fig. 2 is an isometric view, and Fig. 3 is a front view, of a fastener made from a blank of the form represented in Fig. 1. Figs. 4, 5, and 6 show modifications of the fastener.

Similar letters indicate corresponding parts.

The blank, Fig. 1, is cut out from a sheet of metal to the required shape, and is then bent up in a suitable machine to the shape or condition shown in the other figures.

The central portion or body, A, of the fastener-blank is made of equal width, as shown in the drawings; but it may be of unequal width when it is desired to make the head of the fastener wider than the shanks, or to vary the proportions of the body of the fastener from any cause. The ends of the blank are cut in such a manner as to produce at each end, but on opposite sides, a sharp extremity, B B, the out being either on a curved convex line, as shown in Figs. 1, 2, and 3, or on a straight line, as in Figs. 4 and 6, or on a concave curve, as at Fig. 5. In each case the points or extremities of the two shanks are to be on opposite edges, so that when the fastener is applied to sheets of paper the extremities B B of the two shanks will perforate the paper, and then as the shanks are pushed farther along the paper which is between the perforations will be cut by the inner edges, O O, of the fastener after the manner of a drawing cut. This construction facilitates the application of the fastener to paper or to a body Serial No. 196,550. (No model.)

of several sheets of paper, the resistance to the entrance of the fastener being more easily overcome than when the points of the shanks are central to the width of the shanks.

In constructing my paper-fastener I measure off sufficient portions of the ends of the blank to form the two shanks, measuring equal lengths from the extremities B B, leaving enough in the intermediate part of the body A to form the head, which is formed by bending the parts E E of the body over on the central part, D, of the blank in such a manner as to bring the shanks F F against each other, and so as to make the shanks project at right angles to the parts E. The parts D E E form the head of the fastener.

I do not restrict myself to the forms here shown in respect to the forms of the ends of the shanks or the shape or extent of their cutting-edges, as they may be made of various forms.

By constructing the fastener as above described, the perforatingpoints B B of the shanks are on opposite sides of the middle or central line of the shanks, and consequently each shank can be operated with ease, and be readily seized by the fingers of the operator and-bent down after the shanks have been pushed through the paper. This construction enables one to separate the shanks more readily than when the ends of the shanks overlie each other, as in the ordinary construction, because the prongs of the shanks project from opposite edges of the shanks, and the prongs do not overlie each other. This arrangement of the prongs produces along and between their inner edges from their ends to the point where they cross each other angular cutting edges, which will make a drawing out as the points are pushed through the papers to be fastened.

The points can be made more or less sharp, or can be made a little blunt, if desired.

WVhat I claim as new, and desire to secure by Letters Patent, is-

1. A paper-fastener comprising two parallel shanks resting against each other andhaving the inner adjacent edges of their pointed extremities formed into diverging cutters O O, substantially as and for the purpose described.

2. AS an improved article of manufacture, In testimony whereof I havehereunto set my a paper-fastener consisting of a stripof metal hand in the presence of two subscribing wit- IO having the folded head D E and the pointed nesses. folded shanks F 1yin parallel and a ainst T 5 each other, with their inner adjacent edfges at FRED HAMILTO1\' their pointed extremities formed into diverg- \Vitncsses: ing cutters C (J, substantially as and for the W. G. LILLEY,

purpose described. I E. F. IKASTENHUBER.