US307593A

US307593A - robinson

Info

Publication number: US307593A
Authority: US
Publication date: 1884-11-04
Anticipated expiration: 1901-11-04

Description

(Model.)

O. E. ROBINSON.

Y LOOK HINGE. No. 307,593. Pawnted Nov.. 4, 1884.

NESSES A UNTTnn STATES PATENT Orrrcn.

CHARLES ROBINSON, OF BROOKLYN, .NEW YORK.

LOCK-HINGE.

SPECIFICATION forming part of Letters Patent No. 307,593, dated November 4, 1884.

Application filed October 2i', 1883. (Model.)

Locking-Hinge, of which the following is a specication.

My invention relates to a style of lockinghinge more especially adapted for blinds and iO shutters; and it consists in providing the Itrated in the accompanying leaves of a hinge with a curved arm projection, a circular plate, a finger projection, lever-seat projection with lever and spring-bolt. I attain these objects by the mechanism illusdrawings, in Which- Figure l is a vertical section of the entire hinge as open. Fig. 2 is a horizontal vicWof the hinge, showing the locking-bolt and attendent connections. Fig. 3 is a verticalsection of the hinge as closed.

Let A represent that part Or leaf of the hinge attached to the window-i'rame; B, the other half or leaf of the hinge attached to the blind or shutter. On the leaf of the hinge A is a circular plate seated upon a curved arm. From the .center of the circular plate rises the pintle a, on which the leaf B swings.

O is a circular plate With radial apertures c. The arm ofthe leafA, supporting the circular plate C, is made curved, as shown by the dotted lines in Fig. 2. This is for the purpose of allowing the blind or shutter to projectahalf of an inch over the side of the Window-frame to exclude the rays of the sun when closed. Attached to the leaf Bis aiinger projection, b, either cast thereon' or made Oi' a separate piece of metal, for the purpose of retaining the forenger of the hand in operating the locking bolt D.

B is an elongated tubular projection on the leaf B, containing the locking-bolt D and spring c; A projection,f, on the leaf B is for a seat for the leverf. One end of this lever is inserted in an aperture in the end of the locking-bolt D. The locking-bolt D is forced into the radial apertures c in the circular plate O by means ofthe spiral spring c. The top of the tubular projection B is extended over the circular plate (l, in Order to form an absolute protection for the locking-bolt D at its point of entrance into the apertures c, in order that the bolt D cannot be tampered with and the hinge unlocked except by a movement of the lever f. The lever f is securely protected by the stile of the blind or shutter, as shown by the dotted lines in Fig. 2. The hinge is -operated by placing the forefnger of the hand against the linger projection b and the thumb on the leverf. A movement of the lever f toward the finger-piece b withdraws the bolt from the apertures c, and the hinge can then be opened or shut, as desired.

I have described my invention as being applied to a blind or shutter hinge; but itis not of necessity confined to this form Of hinge.

Having fully described my invention, what I desire to claim and secure by Letters Patent 1sf The combination of the stationary leaf of a hinge, made with a curved arm supporting a circular plate, with the movable or swinging leaf of a hinge, made With a finger and leverseat projection provided With a locking-bolt and thumb-lever, substantially as and for the purpose set forth.

GHARLESE. ROBINSON. [L s] Vitnesses: 4

GEO. H. PENDLETON, D. R. MOREA.