US316283A

US316283A - Door-closer

Info

Publication number: US316283A
Authority: US
Publication date: 1885-04-21
Anticipated expiration: 1902-04-21

Description

(No Model.)

J. M DONALD.

DOOR CLOSER.

No. 316,283. I I Patented Apr. 21, 1885.

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ATTORNEYS.

JOHN MCDONALD, OF MIDDLETOWN, ASSIGNOR TO HIMSELF AND GEORGE M. MCDONALD, OF HARVEYSBURG, OHIO.

DOOR-CLOSER.

SPECIFICATION forming part of Letters Patent No. 316,283, dated April 21, 1885.

Application filed June 26, 1884. (No model.)

To all whom it may concern;

Be it known that 1, JOHN MCDONALD, ofMiddletown, in the county of Butler and State of Ohio, have invented anew and useful Improvement in Gate and Door Closers, of which the following is a full, clear, and exact description, reference being had to the annexed drawings, in which- Figure l is a side elevation of a door and frame showing my inventien. Fig. 2 is an edge view of the same; and Fig. 3 is a' modification.

A indicates the door, and B the door-frame, to which the former is hinged.

[5 To the door-frame behind the door are secured two brackets, O O, in which are journaled the ends of a vertical cylindrical bearing-block, D. In this bearing-block is journaled a transverse shaft, E, passing through the middle thereof at right angles to the plane of the door, and to the inner end of the shaft E is secured an arm, F, carrying an adjustable weight, G, which arm is arranged parallel to the plane of the door. The outer end of the shaft E is provided with a crank, H, which is connected by means of a link or bar, I, with a support, J secured to the door.

With this construction. as the door is opened the link I rotates the bearing-block to turn the weight out of the way of the door, and at the same time turns the crank to lift the weight to a position for acting on and closing the door.

Instead of making the device a separate attachment applicable to any door, as in the form above described, it may be made in one piece with the door-hinge, as shown in Fig. 3, in which case the part K of the hinge is pro vided with ears L for supporting the bearingblock D, and the link 'I is connected to a pro- 0 jection, M, on the part N of the hinge.

The general arrangement of the several parts of the device may also be modified without departing from the spirit of the invention.

What I claim is 1. The combination of a rotary bearingblock, a crank-shaft journaled transversely in said block, a weight attached to one end of said shaft, and means, substantially as described, for connecting the crankshaft with a door, substantially as and for the purpose specified.

2. The combination, with a hinge, of a rotary bearing-block supported in connection with a part of the hinge, a weighted crank.- shaft journaled in said block, and a pivoted link connecting the crank of said shaft with another part of said hinge, substantially as shown and described, and for the purpose specified.

JOHN MCDONALD.

Witnesses:

A. G. LYNE, SoLoN O. KEMON.