US577842A

US577842A - Curtain-holding device

Info

Publication number: US577842A
Authority: US
Publication date: 1897-03-02
Anticipated expiration: 1914-03-02

Description

(No Modeli) G. H. DAVIS. CURTAIN HOLDING DEVICE.

No. 577,842. Patented Mar. 2, 1897.

NITED STAT S PATENT OFFICE.

GEORGE H. DAVIS, or PORTLAND, MAINE.

CURTAIN-HOLDING DEVICE.

SPECIFICATION forming part of Letters Patent No. 577,842, dated March 2, 1897.

Application filed October 5,1895. Serial No. 564,714. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE H. DAVIS, a citizen of the United States, and a resident of Portland, in the county of Cumberland and State of Maine, have invented a certain new and useful Improvement in Curtain-Holding Devices; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to a curtain-holding device to be applied particularly to curtains for open street-cars, although it is well adapted for use in other kinds of curtains.

The particular object of the invention is to construct a curtain in which the lower edge can be held firmly against the pull of the spring-roller and in which the lower edge will always remain in a perfectly horizontal position whether the curtain is lifted at the center or the side.

In my curtain-holding device, as hereinafter shown, I make use of a cord or cable at each side of the curtain, the upper end of each cord being secured to the upper portion of the casing at the side of the opening and the lower end being secured in like manner to the lower portion of the casin The center or body portion of each of these cords forms a loop which extends into a hollow curtain-stick which is attached to the lower end of the curtain, and both pass around a common wheel or pulley journaled in the hollow curtain-stick in such a manner that as the curtain moves up and down the common pulley will let off and take up both cords at exactly the same rate, thuscausing both ends of the curtain-stick to rise and fall alike.

As I prefer to construct my device I place my common pulley in the center, and at each end I journal a pulley over which the cords pass as they enter the curtain stick or tube.

In the accompanying drawings I have illustrated a curtain constructed in the manner which I consider best and most effective where a cord or cable is to be used, although it is evident that other forms may be made while keeping within the limits of my present invention and within the terms of my claims.

In the drawings, Figure 1 is a front View of a curtain, the hollow curtain-stick being shown in section. line on a: of Fig. 1, and Fig. 3 is section on the line y y of Fig. l.

0 represents the curtain. R is the springroller, and A is the casing, having therein the groove g, in which the end of the hollow curtain stick or tube S runs. The motion of the curtain is controlled by means of two cords or cables D and D, one on each side of the curtain. The upper end of each of the cords is made fast to the upper portion of the casing, as here shown in the groove 9, and the other end of the cord is in like manner made fast to the lower portion of the casing, the middle or body portion of the cord forming a -loop which extends into the end of the hollow curtain-stick. In order that these two cords may take up and let off at exactly the same rate of speed, I cause them to pass around a common pulley journaled on the inside of the tube. In the present form the common pulley is the grooved wheel H, located in the center of the tube, and around this wheel both cords pass, the cord D being crossed, so thatthe motion of both cords will be in the same direction about the wheel I-I.

At the point where the cords pass into the ends of the tube I journal two other grooved wheels E and F, the cords passing around and over these wheels, which act as guides or antifriction-rolls.

As before explained, when the curtain is moved up and down the cords are let off and taken up at the same rate, thus preserving the parallel motion of the curtain-stick. If the cords or cables are sufficiently stiff and heavy, the friction will be sufficient; but if more friction is wanted it can be easily applied to the wheels or pulleys or to the cords,

as desired.

It is evident that the two cords can be made to pass around more than one common pulley, and that when more than one is employed there is less liability of the cord slipping.

It will be seen that with my device it is immaterial where the lifting or pulling power is applied, whether at the center or ends of the curtain-stick, the latter will always re- Fig. 2 is a section on the main horizontal unless the cords slip on the common pulley, which they will not do with any ordinary usage.

I claim 1. The herein-described curtain-holding device having a hollow curtain-stick secured to the lower edge of the curtain, a cord at each side of the curtain, each of said cords being secured by one end to the upper portion of the casing and by the other end to the lower portion of the casing, the body of each cord forming a loop which extends into said hollow curtain-stick through the end and over a common pulley journaled therein.

2. The herein-described curtain -holding device having a hollow curtain-stick secured to the lower edge of the curtain, a cord at each side of the curtain each of said cords being secured by one end to the upper portion of the casing and by the other end to the lower portion of the casing, a wheel or pulley journaled at each end of said hollow curtainstick and another journaled at some interior point the said cords forming loops which extend into the said hollow curtain-stick through its ends, each passing around one of said end pulleys and both passing around the common interior pulley.

3. In a guide for spring-actuated shades, the combination with a casing and a springactuated shade, of a hollow stick thereon, flexible guides secured to the casing and entering the stick, and means located in the stick, actuated by the guides, for moving the opposite ends of the stick simultaneously.

GEORGE II. DAVIS.

Vitnesses:

S. W. BATES, E. E. PIPER.