US149994A

US149994A - Improvement in door-hangers

Info

Publication number: US149994A
Authority: US
Publication date: 1874-04-21
Anticipated expiration: 1891-04-21

Description

1. COLLINS.

Donor-Hangers.

Patented April 2l, 1874.

Jag/Zin L TSI'NITED STATES PATENT OFFICE.

JOHN COLLINS, OF HOHOKUS TOWNSHIP, BERGEN COUNTY, NEW JERSEY, ASSIGNOR TO HOPKINS AND DICKINSON MANUFACTURING COMPANY.

||v|PRovEMENT .IN Doon-HANGERS.

Specification forming part of Letters Patent No. 149,994, dated April 21, 1874 application led March 21, 1874.

To all whom it may concern Be it known that I, JOHN COLLINS, of Hohokus township, Bergen county, in the State of New Jersey, have invented a new anduseful Improvement in Sliding Door-Sheave and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings and to the letters of reference marked thereon.

Previous to my invention, all the sheaves with which I am familiar have been more or less impracticable, owing to certain defects in construction.

The objects and ends of my invention are to overcome all the various objections and provide a sheave simple and economic in construction, and perfectly practicable in operation 5 and to these ends and objects my invention consists in a sheave for sliding doors, &c., constructed with a properly-grooved pulley or wheel, having trunnions, and mounted in a frame or housing, in which are formed casings for, and in which are placed two sets of antifriction rolls or wheels, as will be hereinafter more fully described.

To enable those skilled in the art to make and use my improved iixture, I will proceed to more fully to describe its construction and operation, referring by letters to the accompanying drawings, in which- Figure l is a side elevation; and Fig. 2, a vertical cross-section of the same.

A represents the cast-iron frame or housing, which is made in two parts, as shown, bolted together at b b, and which is adapted to be let into the door in the usual manner. B is the wheel, the face of which is grooved, or otherwise formed, to properly adapt it to the kind (or shape) of rail on which it is to travel. This wheel B is formed with two trunnions or laterally-projecting axes, c c, around cach of which is arranged a series or set of anti-fric tion rolls or wheels, t' i, 85e., about six in number, and about equal in diameter to the diame ter of the axes c. These anti-friction wheels take their bearings in the dished-out portions d d of the frame A, the whole being so constructed and arranged together that while the wheels i bear their peripheries against the internal circumferences of these portions d of the frame, and also against each other, the

axles or trunnions c c are respectively held in suspension between each (surrounding) set of wheels fi, as clearly illustrated. By this arrangement it follows that whenever the wheel B is rotated its axes c c will revolve against the moving peripheries on the anti-friction wheels i, which in turn will rotate about their axes, and at the same time travel round within the dish-like receptacles d of the frame.

.As thus all the surfaces of contact are moving together, it follows that very little friction or wear will occur, and that the fixture will work with great ease.

In the sides of the housing A are formed openings at f, through which the workin g parts may be examined, and at which oil may be applied to lubricate the journals and wheels. I propose in the manufacture of my improved xture to make the wheel B and housing` A of cast iron, as usual, and the anti-friction rolls fi of steel. A

It will be observed that in a fixture made according to my invention the diameters of the axes and anti-friction rolls can be proportioned as desired, and can be made just as great as may be deemed best, without any enlargement of the hub of the wheel, since to increase the size of the parts named only necessitates an enlargement of the receptacles d l of the housing or frame A.

Having so fully described my improved fixture that any one skilled in the art can make and use it, what I claim as new therein, and desire to secure by Letters Patent, is

The combination, with a wheel, B, having trunnions or axes c c, of a frame or housing', A, formed with circular receptacles, d 1,-and two sets of anti-friction wheels, 'i i, the whole constructed and arranged to operate substantially in the manner and for the purpose set forth.

In testimony whereof I have hereunto set my hand and seal this 11th day of March, 1874.

JOHN COLLINS. [L

In presence of- HENRY R. WANMAKER, J oHN N. BLAKELEY.