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Publication numberUS1171215 A
Publication typeGrant
Publication dateFeb 8, 1916
Filing dateFeb 4, 1915
Priority dateFeb 4, 1915
Publication numberUS 1171215 A, US 1171215A, US-A-1171215, US1171215 A, US1171215A
InventorsDavid Addison Lane
Original AssigneeDavid Addison Lane
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1171215 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)




1,171,215, Patented Feb. 8,1916.


Danna" 7 [tea Feb.'8,'1916. 1

1e parts throughout 'hich 1 view in; perspective roller-and its. asso- .de, constructed ac- L. Fig. 2 represents ransversely and verted by the line 22 direction indicated.

represents a view g the position taken the curtain roller 1 represents a view bracketland pawl racket and pawl beition. Fig. 5 repreive of the disassembracket and pawl :sembled position in sentsa view in per- 1: showing a modid pawl" mechanism.

invention I provide rally'at 5 on which" :ured and wound in a roller is rotatably w casing by means .manner, one of the ad in' Fig.- 1 at 7.

gfor thef floor and jothebrackets -T is the form of a strip outer end' benta substantiallytrif metal '16, in such tooth o detent (l8--- )rner iscut-away as ut-a'way portion beto or greater than .eeve'12. The'len'gth To all whom it may concern:

. ing thetorn shade and securing it to its- Specification of Letters Patent.


j Pater Application filed February 4, le s. Serial No. 6,047.

Be'it known that 1,. DAVID A. Lawn,

citizen of the United States, residingat Austin, in the county of Travis and State ofTeXas, have invented certain new and useful Improvements in Shade-Rollers, of which the following is a specifica-tion-J This invention relates to an improvement in Window shades and more particularly: to 10 an improvement in shade. rollers and brackets. I

It is well known that'window shades are generally very insecurely fastened to their rollers, and that often times by pulling a shade full lengthit is ripped ortorn from the roller, thus necessitating either the-purchase of a new shade and roller or the ex penditure of much time and labor in repairroller. p

It is the principal object of this invention to obviate the above mentioned objections by providing means I whereby downward pull of the shade" will be stopped while yet a turn or two of the shade remains on the roller, so as to prevent accidental ripping or tearing of the shade from its roller.

Another object of the invention is to pro-. vide an improved device of the class described; incorporating aspring'actua-ted detent or pawl normally tending to move into a recess'provided in the-roller for limiting or stopping the rotary movement of the latter, the pawl being normally maintained out of engagement with the recess by the action of the curtain in covering the recess as the curtain rolls upon its roller, "the curtain however being provided .with a cut-away portion adapted when there are'only a few will be extremely simple durable efiicientin operation and "inexpensii e to manufacture.

With these and other objects in view which will become apparent as the description proceeds, the invention resides in the construction, combination and arrangement of parts, hereinaftermore fully described and claimed, and illustrated in the 'accompanying drawing, in whichlike character's of reference indicate lil the several figures, of-w 'Figure 1 represents a of one end of a shade; ciated' bracket and sha cording to my inventior j a view in sectionltaken t tically on a plane indica by. the arrow. Fig.- .8

similar to Fig. 2 showin by the pawl-in locking against rotation. 5 F ig. in perspective of the shown in Fig. 1, said b: ing in disassembledlposi sents a view in perspect bled elements of the mechanism shown in as Fig. 6,;and Fig. 6repre spective similar .to-Fig. fied' form of bracket an In carrying out'my a roller indicated gene] a window shade'6 is se the usualmanner. Th supported on a 'windo of brackets, in the usual brackets being indicate and at its opposite enc periphery of the roller. roller is a metallic ca sleevel2 provided witl at 13 forming a lining shoulder of the recessi Pivotally connected 1 a pawl 14: preferably in of material havingits into engagement with angular shaped piece 0 manner as'tojform a pending from the pawl The shade 6 atone c at 4, the'width of the c ing substantially equal the width of the metal sl and may be actuated either by gravity or by a spring. It normally bears against the shade when the latter is wound, in such position that when the recessed portion of the shade uncovers the recess in the roller, the pawl will drop into the recess and will be engaged by the shoulder 11 thereof in the manner indicated in Fig. 3 .for stopping the rotary movement of the roller and hence. terminatlng the downward movement of the shade while yet there is a turn or two of the shade left upon the roller so that the back 19 of the bracket.


said shade cannotbe pulled out to its full extent and ripped or: torn apart or .away from the roller. p

In the arrangement shown in Figs.v 14t inclusive the means for mounting the pawl consists of a bar 17 formed integrally with brackets 7 and bent at right angles thereto into engagementwith an ear 18 formed integrally with and bent. at right angles to The bar 17 is disposed horizontally andnpon it the rear end 20 of the pawl is loosely turned, in such manner that'the pawl may rock upon said bar. The pawl may be either spring or gravity actuated, and in the former case a length of spring material indicated at 20 is turned upon. bar 17,- and at one end extends through a recess 21 in the upper edge of back 19 of the bracket into engagement with the casing 8. The opposite end of the spring extends in the opposite direction and is projected upwardly through a slot indicated at 22 in the pawl and bears.

against the upper face of the latter whereby said pawl may be maintained in engagement with the roller.

In the form indicated in .Figs. 5 and 6 the bracket 7 is of the ordinary common type. Against the back 19 of this bracket is adapted to be secured a plate 23 having a right angular bent end 24; on which is integrally. formed the bar 17 which bears at one end against an ear 18 also formed on plate 23. On the bar 17 the pawl 14 is pivoted in the usual manner. In Figs; 5 and 6 also this pawl is adapted to be actuated by gravity or by operation of the spring'indicated at 21 similar in arrangement and operation to spring 21.

In both structures shown in, the drawing the pawl is in such position that when therecess in the roller is uncovered by wit-h-.

drawing the shade from the roller the pawl whereov the curtain mar will drop into the recess to be engaged against its shoulder for stopping the with drawal of the shade.

Upon jerking the shade and releasing it'in the ordinary manner the roller will be actuated in a reversed direction so as to roll the shade upon it, and as it moves in the reverse direction the pawl will ride over the floor of the re cess onto the periphery of the roller and over the turns of the shade as the latter becomes wound on the roller. The free passage of the shade up and down is not interfered with in the least by the action of th'e pawl in limiting the movement of the shade.

Therecess 9 is arranged at such point in the periphery of the roller, thatshoulder 11 will come in contact with the pawl just before the ratchet mechanism, which is contained within the roller, and which is of the ordinary usual. construction, takes up another notch or clicks into locking position for maintaining. the shade at adjusted height, so that suflicient play is allowed Q moved up and down to admit of the release ofv the latch in the ratchet mechanism so as to allow starting of upward movement of the shade. 'Although I have described the preferred embodiment ofmy invention, I may desire to make such changes in the construction, combination and arrangement of parts thereof as do not depart from the spirit of the invention and the scopeof the appended claims;

Iclaim: r

1. In a'device of'the class described, the combination of a roller having a transverse recess provided therein and adapted to form a shoulder at one end of the recess, a metallic sleeve disposed upon said roller and provided with a stamped portion engaging in said recess against the floor and shoulder thereof, a flexible shade secured to and adopted to be woundupon the roller and in position to overhang the recess, said shade being provided adjacent the roller with a cut-away portion whereby the recess may be uncovered as the shade-is drawn from the roller, a bracket in which said roller is pivoted, and a, pawl pivotally connected to the bracket and in such position as to drop into the recess when the latter becomes uncovered whereby to limit the movement of the shade, substantially as described.

2. In a. device ofthe class described, the combination of a roller having a recess provided transversely near one end thereof for forming. ashoulder, a bracket upon which said roller is journaled, a shade secured to and adapted to be wound upon the roller and having a cut-away portion adjacent the rollerwhereb'y theshade may be unwound for uncovering the recess, and a pawl pivot ally connected to the bracket and adapted to engage within the recess upon uncovering of the latter wherebyto stop the unwinding movement of the shade.

3. A device of the class described comprising a roller having a recess disposed transversely near one end thereof and providing an inclined floor and a shoulder at one end of the floor, a shade carried on the roller and adapted to be wound thereon whereby to cover said recess, said shade adj acent the roller being provided with a cutaway portion whereby the recess may be uncovered, a bracket in which said shade is journaled and a pawl carried by the bracket and adapted to engage within said recess against the shoulder for limiting the movement of the shade in one direction, said shade adapted when moved in the opposite direction to wind upon the roller and engage beneath said pawl for lifting the latter out of engagement with the recess.

4. A device of the class described comprising a roller having a transversely disposed recess formed near one end thereof, a shade secured to and adapted to be wound upon the roller and adapted to cover the recess portion adjacent the'roller whereby the recess may be uncovered as the shade is unwound from the roller, and means engaging on the shade above the roller and adapted to drop within the recess whenthe latter is uncovered whereby to limit the movement of the shade.

5. In a device of the class described, the combination with a roller having a recess formed therein, and a shade securedto and adapted to be wound on the roller in such position as to cover the recess and provided with a cut-away portion wherebyv therecess may be revealed as the shade nears the downward terminal of its unwinding movement, of a pawl bearing upon the roller and adapted to engage within the recess for limiting the unwinding movement of the shade.




(Sopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4683932 *Nov 19, 1984Aug 4, 1987Richard BubendorffRolling shutter
US7311131 *Aug 13, 2004Dec 25, 2007Nien Made Enterprise Co., Ltd.Rolling mechanism for window blind
US7617858 *May 17, 2007Nov 17, 2009Hunter Douglas Inc.Skew adjustment device for coverings for architectural openings
US8006736Oct 6, 2009Aug 30, 2011Hunter Douglas Inc.Skew adjustment device for coverings for architectural openings
US8789576 *Apr 4, 2012Jul 29, 2014Stoebich Brandschutz GmbhFire or smoke protection device
US20120255684 *Apr 4, 2012Oct 11, 2012Frank KruegerFire or smoke protection device
U.S. Classification160/300
Cooperative ClassificationE06B9/78