US1319111A

US1319111A - Shade-holler

Info

Publication number: US1319111A
Authority: US
Publication date: 1919-10-21
Anticipated expiration: 1936-10-21

Description

Patented Oct. 21, 1919.

INVENTOR WITNESSES James 14 Price.

A TTOHNEYS {UNITED STATES rATE r OFFICE.

, JAMES w. PRICE, or HENRYETTA, oKLAHoMA, Assrenoa or ONE-HALF 'IO I-IETTIE r.

MILLER, or HENRYETTA, OKLAHOMA.

S ADE-Rotten.

To all whom it may concern:

Be itknownthat I, JAMEs WV. PRICE, a

citizen of the United States, and a resident of Henryetta, in the county of Okmulgee and State of Oklahoma,have invented certain new and useful Improvements in Shade Rollers, of which the following is a specification.

My invention is an improvement in shade rollers, and has for its object to provide a cheap and simple roller of the character specified wherein the operation of the'spring which rotates the roller to wind up thesh'ade is controlled by a pawl so mounted .that it will always be in position to engage the catches of the roller, and which is' positively held out of engagement .with the catches when the roller is rotating above a predetermined speed, and which may be easily disengaged when desired to adjust the roller.

In the drawings:

Figure 1 is a perspective view of one end of the shade roller;

Fig. 2 is alongitudinal section Fig. 3 is an end view of the cap;

Fig. 4 is atop plan view of one end of the roller Fig. 5 is a perspective view of the pawl or latch bar.

In the present embodiment of the invention the roller l, which is of wood, carries the, shade 2 which is secured thereto in the usual manner and winds thereon, and one end of the roller is axially cored as indicated at 3, to receive a rod 4 of metal. Thisrod carries the coil spring 5 which operates the roller, the said spring having oneend received in a longitudinallyextending notch 6 in the rod, while the other end is adapted to engage the cap 7 onthe end of the roller. This cap, as shown, has'a centralhub 8 through which the rod extends, and the rod has a collar 9 which engages the end of the hub to hold the rod from outward movement. The outer end of therod is flattened, as shown at 10, for engagement by a similarly shaped notch in one of the brackets 11 which supports the roller.

The flattened portion 10 of the rod eX- tends from the outer face of the cap to the outer end of the rod and a pawl or latch bar 12 is mounted on this portion of the rod. This pawl or latch bar has a longitudinally extending slot 13 through which the flattened portion of the rod passes, and a plate Specification of Letters Patent. Patented Oct. 21', 1919. Application filed February 6, 1919. Serial No. 275,423. [I i 14 is arranged on the flattened portion at the the flattened portion of the rod, that'is,

from above downwardly mounted in the brackets.

Catch lugs 15 are provided on the end of the cap, and thesaid lugs are adapted to be engaged by either end of the pawl, and the said ends are beveled in opposite directions as indicated at 16, to provide 'cam surfa'ces for riding upon other lugs '17, one o f'which is arranged adjacent to each lug 15 and in front of the same, so that when the pawl is moving in one direction, that is, when the shade is moving upwardly, the ends of the pawl will engage these cams 17, and will be lifted over the catch lugs'15. v v When the curtain is moving at a moderate rate of speed, the cam lugs 17 will cause the pawl to over-ride the lugs '15, so that there can be no sticking or stoppage of thec'ur tain untilydesired. As soon as the speed of the curtain is slowed sufficiently, the pawl will swing into engagement with thecatch lugs, it being noted that there is space between each pair o'f

lugs

15 and 17 for this purpose. V K v Referring to Fig. 5, it will be noted that the ends of the slot 13 are beveled in opposite directions, as indicated at 18, and the bevel-' ing is outward from the end of the roller. Thuswhen the pawl hangs in the'position of Fig, 2, the lower end will be swung in ward by the beveled end of the slot, to pro,

when the roller is and the catch IugsfThe convex surface'of the plate 1s permits-this rocking movement of the pawl. In placing the roller in the brackets,- the trunnion 10 may beengaged from either edge, since the pawl is reversible, working equally well in either position enough to cause the engaging end of the latch to move backwardly over the adjacent vide a positive engagement between the pawl cam lug to freely release the roller. As soon as the downward pull on the curtain is relaXed, the spring will wind up the roller, and the pawl will swing freely over the catch lugs, being positively lifted over the lugs by the cam lugs.

With the improved curtain, cheap wood may be used, since it is only necessary to core out a small opening. There are but few parts in the catch mechanism, only five including the spring and rod. Hence the device may be very cheaply constructed and, although simple, it is very efficient for the purpose, absolutely preventing sticking of the shade when it is permitted to move up at a fair rate of speed. 7 Slowing of the movement of the hade will permit the pawl to engage, bringing the shade to a halt at the desired point. The manner in which the pawl is hung upon the trunnion 10 insures always a positive engagement of the pawl with the catch lugs.

I claim:

1. In a shade roller, the combination with the roller and the springfor controlling the same, of a pawl, said pawl being mounted to move vertically on the flat trunnion of the shade roller and being supported to swing at its lower end toward the end of the roller, said roller carrying catch lugs at. its ends for engagement by the pawl to hold the roller, and the roller having cam lugs adjacent to the catch lugs for lifting the engaging end of the pawl over the catch lugs when the roller is rotating.

2. In a shade roller, the combination with the roller and the spring for controlling the same, of a pawl, said pawl being mounted to move vertically on the flat trunnion of the shade roller and being supported to swing at its lower end toward the end of the roller, said roller carrying catch lugs at its end for engagement by the pawl to hold the roller, said roller having means for lifting the engaging end of the pawl over the catch lugs when the roller is rotating. 1

3. In a shade roller, the combination with the roller and the pring for controlling the same, of a pawl mounted on the flat trunnion of the shade roller and having means for constraining the same to swing at its lower end toward the roller, said roller carrying catch lugs at its ends for engagement by the pawl to hold the roller against the action Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

of the spring, and the roller having means adjacent to the catch lugs for lifting the engaging end of the pawl from the catch lugs when the roller is rotated.

41-. In a shade roller, the combination with the roller, the spring for controlling the same and the fiat trunnion with which one end of the spring is connected, of a pawl mounted to swing on the trunnion and having means in connection therewith for swinging the lower end of the same toward the roller, said means comprising an opening in the pawl through which the trunnion extends, theupper end of the opening being beveled outwardly and upwardly.

5. In a shade roller, the combination with the roller, the spring for controlling the same and the flat trunnion with which one end of the spring is connected, of a pawl mounted to swing on the trunnion and having means in connection therewith for winging the lower end of the same toward the roller.

6. In a shade roller, the combination with the roller, the spring for controlling the same and the trunnion with which one end of the spring is connected, of a pawl held on the trunnion to swing toward and from the roller, the shade having catch lugs for engagement by the pawl, and havingoam' lugs for lifting the pawl over the catch lugs when the roller is rotating, and means in connection with the pawl for normally constraining the same to swing toward the curtain.

7. In a shade roller, the combination with the roller, the spring for controlling the same and the trunnion with which one end of the spring is connected, of. a pawl held on the trunnion to swing toward and from the roller, the shade-having catch lug for engagement by the pawl, and having cam lugs adjacent to the catch lugs for lifting the pawl over the catch lugs when the roller is rotating.

8. In a shade roller, the combination with the roller and the spring for controlling the same, of a pawl and ratchet mechanism for controlling the winding movement of the roller, and means in connection with said pawl and ratchet mechanism for positively lifting the pawl over the, teeth of the ratchet when the rolleris moving in a direction to wind the roller above a predetermined speed.

JAMES W. PRICE.

Washington, I). Q,