US757607A - Spring-hinge. - Google Patents

Description

UNITED 'STATES PATENT OFFICE.y

Patented April 19, 1904,

HENRY L. FERRIS, OF HARVARD, ILLINOIS, ASSIGNOR TO HUNT, HELM, FERRIS 8c COMPANY, OF lHARVARD, ILLINOIS, A CORPORATION OF ILLINOIS.

SPRING-HINGE.

SPECIFICATION forming part of Letters Patent No. 757,607, dated April 19, 1904.

Application filed December 26, 1903. Serial No. 186,623. (No model.)

To @ZZ whom, t may concern,.-

Be it known that I, HENRY L. FERRIs, a citi- Zen of the United States of America, residing` at Harvard, in the county of `McHenry and State of Illinois, have invented certain new and useful Improvements in Spring-Hinges, of which the following is a specification.

My invention relates to certain new and useful improvements in spring-hinges; and its object is to produce a device of this class which shall have certain advantages, which will appear fully and at large in the course of this specification.

. To this end my invention consists in certain novel features of constructlomwhich are clearly illustrated in the accompanying draw ings and described herein.

In the aforesaid drawings, Figure l is an elevation of my improved hinge. Fig. 2 is a horizontal section in the line 2 2 of Fig. l, and Fig. 3 is a similar section'in the line 3 3 of Fig. l looking in the direction of the arrow.'

Referring to the drawings, A is the doorjamb, to which one leaf of the hinge is secured, and B is the door.

C indicates one leaf of the hinge, which is formed of a single piece, preferably of' sheet metal, having a flat central portion c and two upwardly-projecting ears o'. To the leaf C is secured a leaf D, which, like the leaf C, consists of a flat central portion CZ and upwardlyprojecting ears 0l. These leaves are connected by rivets E. The leaf O has near its center an upwardly-projecting hook O', which is preferably integral with the leaf C, but which can, if desired, be made in a separate piece. In the preferred construction the leaf C is made of sheet metal. This hook is merely The operation of this hinge will be perfectly apparent. As the door is opened, the ends of the spring F are drawn to the right in Fig. l, and consequently pull upon the spring, the tendency being in this position to close the door. This tendency continues until the ends of the spring swing past the plane determined by the hook and the pivotal connections between the leaves. After this the ends of the spring swing to the left, and consequently the tendency is to open the door. v

It will be seen that'this hinge is extremely simpleand can be made entirely of sheet metal and is therefore very cheap. Furthermore, it operates in a particularly effective manner, for the' reason that the spring is free to pivot on the hook C', swinging about this hook, as shown in the dotted lines in Fig. 2, and, furthermore, as tension is put on the spring the coil at its center is free to contract, the turns of wire slipping on the hook, so that the spring utilizes a straight pull as distinguished from a torsional pull.

I realize that considerable variation is pos- 'sible in the details of this construction without departing from the spirit of the invention, and I therefore do not intend to limit myself to the specific form herein shown and described. Y

I claim as new ters Paten tf Y In a device of the class described, the combination with two leaves having upturned ears pivoted together, of a hook upon one member substantially at its longitudinal center, perforations in the ears upon the other leaf, and a spring having a central coil hooked over said hook, and having its ends extending through said perforations.

In witness whereof I have signed the above application for Letters Patent, at Harvard, in

and desire to secure by Letthe county of McHenry and State of Illinois,

O. J. HENDmcKs, FLORENCE E; CRUMB.

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