US1521155A

US1521155A - Shade pull

Info

Publication number: US1521155A
Application number: US598320A
Authority: US
Inventors: Arthur S Isaacs
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-11-01
Filing date: 1922-11-01
Publication date: 1924-12-30
Anticipated expiration: 1941-12-30

Description

A. S. ISAACS SHADE PULL Filed Nov. 1, 1922 Patented Dec. 30, 1924.

ITED srA'rEs ARTHUR S. ISAACS, OF PITTSBURGH, PENNSYLVANIA.

SHADE PULL.

Application filed November T 0 all "whom it may concern:

Be it known that I, ARTHUR S. Islnics, a citizen of the United States, and residing in the city of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented or discovered the new, useful, and Improved Shade Pulls of which the fol lowing is a specification.

My invention consists in certain new and useful improvements in pulls for springroller window shades and the like.

The type of shade-pull now in general use consists of a ring or other tension device attached to the center of the bottom edge of the shade, and with the same it is diflicult to keep the shade straight", as it tends, when unwound or partially unwound to hang crooked, and, when wound up, to form a crooked roll on the roller. This presents a bad appearance, and also results in the shade becoming wrinkled and broken, and also frayed and torn along the edges.

The object which I have in view is the provision of improved pull means which will insure the straight unwinding of the shade and also of the straight winding up of the same on the roller, so that the shade will not only hang true with vertical lateral edges, but will also be properly wound up on the roller in the form of a roll with even ends. I i

For the accomplishment ofthese purposes I provide a new and improved shade pull wherein the tension on the shade is not exerted at the center of the bottom edge of the shade, but at either side of said center, at two points sufliciently spaced. from said center to prevent torque when the pull is used. Such points of attachment are preferably nearer the ends than the center, thereby keeping the vertical edges of the shade straightand true.

In my invention shown in the drawings, at these two points, on either side of the center of the shade, I attach the ends of a connecting member, which is preferably a flexible cord or wire, and to said connecting member I attach a depending tension member adapted to be grasped by the fingers for the purpose of exerting a pull or jerk to the shade.

I providea slipping connection between I the connecting member and the tension member, as for instance, a-v sliding ring or grooved pulley, to which the tension mem- 1, 1922. Serial NO. 598,320.

ber is attached, running on the connecting member, thus automatically ad usting the pull or jerk to the action of the roller.

vided with the usual hem 1 in which is slipped the wooden stick or other stiffener 2.

At either side of the center of the bottom edge of the shade, and preferably adjacent to the ends thereof, I apply the spring metal clasps 3 which encompass the lower portion of the shade. 4 represents the connecting member stretched or extending, preferably ta-utly, between the clasps 3, and tied or oherwise firmly secured to the clasps.

'5 represents the depending tension member, which may be a short cord with a ring 6 on its lower end. i

I attach the tension member 5 t0 the connecting member 4 by means slidable on the connecting member. Thus, I have shown a metal ring 7 running on the connecting member 4 and to which the tension member 5 is attached.

It is quite evident that any pull or jerk exerted on the tension member will be transferred to the rigid, bottom edge of the shade in such a manner that the vertical edges of the shade will remain straight and true, and the shade will be wound evenly on the roller.

This is due to the fact that the point of pull is not fixed at the center of the shade but accommodates itself to the direction of the application of the force, so that the pull is exterted in a direction normal to the roller, thus insuring uniform winding and unwinding.

What I desire to claim is 1. In a shade pull for use in connection. with a spring-roller shade, the combination of a flexible cord attached at its ends to the edge of the shade at equal distances on either side of the center of the latter, and a pull cord having its end connected to said first named cord and freely slidable along l. l O

the latter whereby the application of the sides ofthe center of the shade, ind means ,pull' is maintained normal to the springwhereby the point of application'of the pull 10 roller. automatically shifts, so that the pull is al- 2. For use in connection With a depend- Ways exerted in a direction normal to the f ing spring-roller shade, a shade-pull c0m-' roller.

prising a freely depending tension member Signed at Pittsburgh, PEL, this 27th day and means connecting said tension member of Oct., 1922. c to the bottom edge of said shade at opposite ARTHUR S. ISAACS.