US414071A - Fastener for envelopes - Google Patents

Description

(N0 Model.)

G. W. McGILL.

FASTENER FOR BNVELOPES.

No.414.071. Patented0ot.2 9, 1889.

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UNITED STATES PATENT OFFICE.

GEORGE \V. MCGILL, OF RIVERDALE, NEWV YORK.

FASTEN ER FOR ENVELOPES.

SPECIFICATION forming part of Letters Patent No. 414,071, dated October 29, 1889.

Application filed June 22,1889. Serial No. 315,174:- (No model.)

To all 1072,072 it may concern:

Be it known that I, GEORGE W. MOGILL, a citizen of the United States, residing at Riverdale, in the county of New York and State of New York, have invented new and useful Improvements in Fasteners forEnvelopes and for other Purposes, of which the following is a specification.

In transmitting samples by mail in unsealed envelopes or similar wrappers it is very desirable to provide means whereby the closing flap can be securely held in its closed position by contrivances that will permit it to be released with ease and facility that the officials may inspect the inclosures and then quickly and conveniently reclose and secure the envelopes or packages.

The object of my invention is to provide a novel, simple, efficient, and economical device for accomplishing the purposes mentioned, and which is also capable of being otherwise usedas, for instance, to fasten or bind together two different sets of papers or documents to permit one set to be removed without disturbing that part of the fastener which secures the other set.

The invention consists in the novel features of construction hereinafter described and claimed, reference being made to the accompanying drawings, illustrating the inven tion, in which Figure 1 is a perspective view of a blank to form the fastener; Fig. 2, a similar View showing the blank folded upon itself longitudinally along its median line; Fig. 3, a similar view showing the inner member of the blank bent into two prongs; Fig. 4:, a perspective view of the completed fastener; Fig. 5, a transverse sectional view of the fastener; Fig. 6, a sectional elevation showing the fastener applied to secure two thicknesses or clifferent sets of papers; Fig. 7, a perspective view of a blank to form a modified form of fastener; Fig. 8, a similar view showing said blank folded upon itself longitudinally along its median line, and Fig. 9 a perspective view of the completed fastener formed according to the modification.

In order to enable those skilled in the art to make and use my invention, I will now describe the same in detail, referring to the drawings, Where the blank is shown in Fig. l, and is composed of two strips of metal 3 and 4, parallel with each other and onelonger than the other, the center of both being integral with each other, as by a neck 2, for a distance equal to the spread of the completed staple formed from the blank. To form the staple fastener this blank is folded upon itself longitudinally along its median line, as in Fig. 2, and the extremities of the inner member 3 are bent outward to form two separated prongs 5, which are preferably pointed. The other or outer member 4 is folded around and toward the prongs 5 to constitute shoulders 6, and then bent outward into prongs 7, the inside surfaces of which preferably rest against and are parallel to the outer faces of the prongs 5. This construction provides a fastener wherein the head is composed of two thicknesses or superposed layers, with the inner prongs between and next to the outer prongs, both pairs of prongs extending later ally in the same direction from the duplex head. The shoulders 6, by projecting longitudinallybeyond the outer prongs 7, serve to cover and conceal the holes or slits made in the papers for the insertion of the prongs. The prongs which lie adjacent to or against each other are made of different lengths to facilitate bending the prongs down upon the papers, and, as shown, the inside prongs 5 are the shortest, so that they can be passed through one thickness or set of papers, as at 8, Fig. 6, and be clinched down, and the outer prongs 7 inserted through another thickness or set of papers, as at 9, and then clinched down in either direction.

In Fig. 9 the fastener also comprises a head of two thicknesses or members 3 and 4, and is made from the blank, Fig. 7, by folding such blank upon itself longitudinally along its median line, as shown in Fig. 8, and then binding the extremities of the two members at right angles to the duplex head to form the inner prongs 5 and outer prongs 7. In this modified construction the shoulders 6 (shown in Figs. 4 and G) are omitted.

The fastener is composed of a single piece of material, and the blanks are preferably stamped from any kind of sheet metal which will permit a blank to be easily bent or folded scribed, consisting of two pairs of prongs projecting in the same direction from one side of a head composed of two superposed layers formed integral and the prongs of each pair a respectively in close parallel contact, each layer of the head carrying a pair of the prongs, substantially as described.

In testimony whereof I have affixed my signature in presence of two witnesses.

GEORGE WV. MOGILL.

W'itnesses: THos. L. SoovILL, E. A. S. BARKELEW.

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