US44602A

US44602A - Improved curtain or shade fixture

Info

Publication number: US44602A
Authority: US
Publication date: 1864-10-11
Anticipated expiration: 1881-10-11

Description

UNITED STATES PATENT OFFICE.

WILLIAM CAMPBELL, OF NEW YORK, N. Y.

IMPROVED CURTAIN OR SHADE FIXTURE.

Specification forming part of Letters Patent No. 44,602, dated October l1, 1864.

' ot' this specification, in which- Figure l is a front view of my invention,

partly in section; Fig. a transverse section ofthe same, taken in the line rx, Fig. l.

Similar letters ot' reference indicate `like parts.

This invention relates to a new and useful improvement in that class ot' iixtures for wind0w-shades in which the roller on which the shade is wound is provided with a spiral spring to render the roller self-acting in windin g up the shade. v

The invention consists in a new and iluproved stop mechanism for holding the roller or preventing` it from winding up the shade, so that the latter may be held or retained at any desired height.

A represents a shade-roller, which is provided internally with a spiral spring, B, and is hung in the usual manner 'in bracket et a', said spring` having a tendency to rotate the roller A in the direction indicated by arrow l, and thus wind up the shade C. At one end ofthe roller A there is a pulley, D, formed on or firmly attached to the roller, and-.which may be smaller in diameter than the latter. This pulley may be of wood or metal and may, if desired, be covered with india-rubber b, or other suitable elastic material. The bracket a', in which this end ofthe roller is fitted, is provided with an upright plate, c, at its rear, and between this upright plate c and the pulley D there is a vertical wedge, E, the beveled or inclined surface of which is opposite to or faces the pulley D, as shown clearlyin Fig. 2. This wedge E is provided with a cylindrical or other suitably-shaped shank, d, which passes through a horizontal projection, e, at the bottom ofthe bracket a', and has a spiral spring,

.f, upon it, said spring being between the projection 6 anda shoulder, g, formed by the low( r thick end of the wedge E, and having atendency to keep the wcdgi pressed upward, so as io bind between the pulleyD and the plate c, and by its pressure against said pulley prevent the roller being turned by the spring, and consequently the shade from being wound up. This will be fully understood by referring to Fig. 2, in which it will be seen that the rotating ot' the pulley Din the Vdirection given it by the spring B would have a tendency to cause the wedge E to press or bind rmly against it, and it will also be seen that if the pulley D be turned in the reverse direction it will force down and loosen the wedge E, and consequently that the shade may be lowered at any time by simply pulling it down.

The lower end ofthe shank d of the wedge E has a cord, F, attached to it, by which the wedge E may be drawn down to release the pulley 1) and admit of the spring B turning the roller A and winding up the shade C.

Thus by this simple means a very eicieut and economical stop for spring shade-rollers is obtained-one that is noiseless in its operation and not liable to get out of repair or become deranged by use. 1

l claim as new and desire to secure by Letters Patent- The wedge E and pulley D, in combination with the springroller A, all arranged substantially as and for the purpose herein set forth.

WM. CAMPBELL.

Witnesses:

JAMES l?. HALL, C. L. TOPLIFF.