US1145003A - Safety-pin. - Google Patents

Description

F. E. DE LONG.

SAFETY PIN.

APPLICATION FILED MAY 9, 1913.

Patented July 6, 1915.

W-Hmseee 9,;

- the pin, as seen from the side which is IINXTED STATEh FRANK E. DE LONG, OF PHILADELPHIA, PENNSYLVANIA.

SAFETY-PIN.

Application filed'IVLay 9, 1913.

To all whom it may concern:

Be it known that I, FRANK E. DE LONG, of Philadelphia, in the county :of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Safety-Pins, whereof the following is a specification, reference being had to the accompanying drawings.

My invention relates to that type of safety pins which comprise two parallel elongated members, one of which may be termed the shank and the other the pin proper, formed of a continuous piece of wire returned upon itself, and at the point of return disposed in one or more coils to form a spring, the end of the shank member being permanently secured to a shield which is provided with an aperture adapted to receive the pointed end of the pin. As heretofore constructed, pins of this character have been open to the objection that the coiled wire at the spring extremity of the pin was liable to catch in lace or other delicate fabric, owing to the tendency of the fabric to enter between the coils and become pinched thereby, in the act of closing or opening the pin, or even where the latter was fastened in position.

The object of my invention is to avoid this difliculty, and to that end I construct the pin as shown in the accompanying drawings, wherein Figure I, represents a side elevation of the pin in closed position. Fig. II, is a top or plan view thereof. Fig. III, is a side elevation of the coil or spring extremity of op posite to that shown in Fig. I. Fig. IV, is a transverse vertical section on the line IV, IV, of Fig. 1.

The pin comprises as its main essential elements, a head or shield 1, which may be of the usual form, with a lateral aperture 2; a shank 3, soldered or otherwise secured within the head, and a pin proper 4, of such dimensions and so located that its point 6, can enter the aperture 2, by lateral pressure, and will then spring into its engaging position for retention within the shield as indicated by the dotted line in Fig. I.

The spring element, which is located at the extremity remote from the shield 1, consists of a triple coil of wire disposed in a peculiar manner which will now be explained. Tracing the progress of the wire Specification of Letters Patent.

Serial No. 766,463.

from the shank 3, it will be noted that it is bent upward to form a substantially circular coil whose rising member is represented at 8, and whose descending member 9, is at the bottom conducted diagonally across the general plane of the structure, (as shown in dotted lines at 10, in Fig. II), and again rises as indicated at 11, to form a second coil. substantially similar to the coil 9, above referred to. The second coil is continued as shown at 12, in substantially symmetrical relation with the upper portion of the first mentioned coil, and descending, is turned inwardly to form a return bend of shorter radius, as shown at 13. This return bend is thus embraced by, or inclosed between, the other two coils both laterally and at what may be termed its rear extremity, or that remote from the shield 1. The wire of this return bend 13, is continued upward to a point somewhat less than the height of the two lateral coils, and is then projected out from between them to constitute the pin member 4.

For the purpose of clearness of illustra tion in the drawings, I have shown all the wires as retaining their original circular cross section, and have also in Fig. II, indicated the inclosing coils as separately by an interval which is somewhat exaggerated, but it will be understood that my invention is not limited to these details, as it is common in articles of this character to compress the coils or other portions of the wire at desired points, and to flatten or otherwise modify the cross section thereof.

l/Vith a pin constructed in accordance with my invention, it is practically impossible for a fabric to become entangled in, or pinched by, the spring element under any normal condition of use, since the interstices between the wires at all parts of the spring element are so disposed, and the portion which has the greatest movement e. the interior return bend) is so shielded by the outer, or guard coils, that such engagement is prevented.

Having thus described my invention, I state that I am aware that it is not new to form a safety pin from an integral piece of vaire, with a plurality of coils at the spring extremity, and I do not broadly claim such a structure. The distinguishing feature of my invention lies in the fact that the interior Patented July 6, 1915.

coil, which directly extends from the pin member, is inclose'd between two guard coils in the relation above set forth.

I claim:

In a safety pin, the combination of a shank member; a pin member; and a spring member integral With said shank and pin, said spring member comprising a substantially circular helical coil formed in prolongation of the shank member; a second helical coil of substantially similar diametric projection from the line of the shaft, ar-

Copies of this patent may be obtained for five cents ranged side by side With said first coil, and a return bend of shorter radius, arranged between said coils and inclosed thereby, said 15 return bend merging into the pin member, substantially as set forth.

In testimony whereof, I have hereunto signed my name at Philadelphia, Pennsylvania, this third day of May 1913.

FRANK E. DE LONG.

Witnesses:

JAMES H. BELL, E. L. FULLERTON.

each, by addressing the Commissioner of Patents.

Washington, D. G.

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