US 17368 A
Description (OCR text may contain errors)
UNITED STATES PATENT OFFICE.
CHANDLER FISHER, OF MILTON, MASSACHUSETTS.
Specification of Letters Patent No. 17,368, dated May 26, 1857.
To all whom t may concern:
Be it known that I, CHANDLER FISHER, of Milton, in the county of Norfolk and State of Massachusetts, have invented a new and useful Method of Hanging and Balancing Window Shades and Curtains, of which the following is a full, clear, and exact description, reference being had to the annexed drawings, making part of this specification, in which- Figure l is a front view of a window shade as applied to a window frame. Fig. 2, a longitudinal vertical section through the curtain roll; said ligure also represents the pivots or ournals on which the curtain roll is supported and portions of the window frames.
My invention has for its object to hold the curtain or shade in any position in which it may be placed without the use of weighted tassels or of the ratchet pulley formerly employed for the purpose, and consists in the employment of a spring in connection with the pivot upon which the curtain roll turns, and is so arranged as to produce sufficient friction between the curtain roll and the window frame, to hold the curtain in any position in which it may be placed, without the use of Weights or other contrivances for the purposes.
To enable others skilled in the art to understand my invention I will proceed to describe the manner in which I have carried it out.
In the accompanying drawings A and B represent the sides of the window frame. H the curtain or shade.
C and D are two pins or pivots which project from the inner faces of the window jambs, and upon which the curtain roll revolves.
G is a cap or spool upon which the cord O is coiled. This cap is secured to the curtain roll by the screw F, in the head of which is bored the hole for the reception of the pivot D. In the opposite end of the curtain roll is bored a hole I upon the line of its axis, into which is inserted a metal tube L, the outer end of which is closed with the exception of a small hole for the reception of the pivot C. This tube is allowed to slide freely in the hole in the curtain roll, and is pressed outward against the window frame by the spring K, one end of which rests against the bottom of the hole. The friction thus produced between the curtain roll and the window frames, or the brackets to which it is pivoted is suiicient to balance the curtain and hold it stationary in any position in which it may be placed.
When it is desired to remove the curtain from the window, it is only necessary to press the roll toward the side A of the frame, thus forcing the sliding tube into its hole and relieving the opposite end of the roll from the pin D.
To replace the curtain, enter the pivot C into the end of the slide tube'L and by pressure upon the roll force the tube back a sufficient distance to permit the pivot D to enter its socket.
It is evident that the pivots in lieu of being permanently secured to the window frame, may be attached to the curtain roll, one of them being forced out by a spring behind it. And these pivots in lieu of running directly in the window frame may run in suitable brackets attached thereto, without Ain the least departing from the principle of my invention.
What I claim as my invention and desire to secure by Letters Patent is- The employment of a spring, in connection with the pivot of a curtain roll, operating in the manner substantially as herein set forth for the purpose of producing friction between the roll and the window frame, and thereby holding the curtain in any position in which it may be placed.
In testimony whereof witness my signature.
SAM COOPER, THos. R. RoAoH.