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Publication numberUS1373641 A
Publication typeGrant
Publication dateApr 5, 1921
Filing dateJun 24, 1918
Priority dateJun 24, 1918
Publication numberUS 1373641 A, US 1373641A, US-A-1373641, US1373641 A, US1373641A
InventorsWilliams Frank E
Original AssigneeWilliams Frank E
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Shade-roller
US 1373641 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

F. E VHLHAMS.

SHADE ROLLER. APPLICATION FILED JUNE 24, 1918.

1,373,641. Patented Apr. 5, 1921.

A INVENTUPL, o rw a M 1 HIS ATTUBNEY.

llhllTEQ STATES PATENT OFFICE.

FRANK E. WILLIAMS, OF ALHAMBRA, CALIFORNIA.

:sHADE-ROLLER.

Application. filed June 24 To all 10. mm it may concern:

Be it known that l, FRANK VVILLIAMs, a citizen of the United btates, residing at Alhambra, in the county of Los Angeles and State of California, have invented new and useful improvements in Shade-Rollers, of which the following is a specification.

This invention relates to shade rollers, and more particularly to shade rollers of the spring actuated type wherein a torsion spring is employed to rotate the roller and so roll up the shade and against which spring. action the shade is drawn in the lowering and unrolling of the same. The invention has for its object to provide a shade roller ot the general nature stated which will be free from the disadvantages oi such rollers as ordinarily constructed, in

that it is more positive in action, may be adjusted to a nicety and will automatically be brought to a step in case of accidental release during the manipulation of the same; these desiderata are not met with ordinary shade roller practice, as may be readily demonstrated by attempting to closely adjust the lower margin oi a shade mounted upon an ordinary or standard roller, as to the case of nicety of adjustment, and. by releasing the grip on the shade during the unrolling or the rolling up action, as to the automatic stopping of the roller; in the latter case, in ordinary practice, it will be found that the shade will rush to completely rolled up position when released, and when stopped at all, such stoppage willbe due to either the completely unwound condition oi": the spring or to stop page by impact of? lower marginal shade portions as they strike and lodge in the crotch formed by the roller and the window casing upon which the shade is mounted; the non desirability of such impact is obvious.

In accordance with the present invention, a. spring actuated roller adapted to have a shade secured thereto and wound thereupon may be provided and such roller and its spring. may resemble the conventional type to a certain extent in that the roller is rotatable about an internally disposed fixed rod to which one end of the spring is secured, and about which the sgring is coiled, the other end of the spring being secured in such manner to the roller that the same may be rotated thereby; however, in the present invention, an engagement means, preferably in the form of a pawl, is provided in conjunc- Patented Apr. 5, 1921.

1.918. Serial No. 241,471.

tion with the fixed rod and in position to be acted upon and against by co-acting means, preferably in the form of two series of bars carried by the roller. The pawl being preferably mounted for oscillation about a fixed pivot is adapted for engagement with either series of bars, and is projected into one or the other of such series or bars to stop the roller, or into an annular free space between the two series of bars, according to the rate of speed or rotatory motion of the roller. T he pawl is adapted for locking engagement with the bars only to prevent rotation thereof in a certain direction, namely, in the direction of movement directly caused by the spring, so that the roller may be freely rotated in unrolling the shade, but must be released or fed back to the roller at a speed intermediate the slow rate of speed at which a bar of one series would be caught by the pawl, and the high rate of speed at which a bar of the other .series would be caught by the pawl. The pawl is preferably arranged to fall into the slow speed series of bars by gravity, and such bars are preferably each of such form that at the intermediate speed of roller rotation under impulse of the spring the pawl is projected upwardly into the annular space as each bar of the low speed series strikes it, so causing it to remain out of contact with the leading edge the next succeeding bar 0% the slow speed series; the pawl however, at intermediate roller speed, falls onto such succeeding bar behind the leading edge thereof and is projected upwardly thereby onto the next succeeding'bar. At relatively slow speed of roller rotation, such as is permitted by proper manipulation oi the shade, the pawl falls downwardly so that a nose thereon enters the space between two bars of the slow speed series and contacts with the oncoming leading edge of a bar, so stopping the roller, the sp 'ing holding the bar and pawl nose in engagement. At high speed of roller rotation, as under impulse of the spring when unrestrained by manually holding the shade, or otherwise, a bar of the slow speed series will strike the pawl with such force that the same will be driven upwardly far enough to engage one of the bars of the high speed series and so lock the roller against further movement under urgence of the spring until manually released by first pulling downwardly upon the shade. i v i 1 With the above and other objects in view,

including relative simplicity and inexpensiveness in construction and organization coupled with reliability and serviceability, the invention consists in the novel and useful provision, formation, combination, association and relative arrangement of parts, members and features, all as hereinafter described, shown in the drawing and finally pointed out in claims.

in the drawin Figure 1 is a central longitudinal sectional view of a shade roller constructed and organized to embody the invention, the view being taken on the line :a m Fig. 4i, and looking in the direction of the appended arrows; I

2 is a transverse sectional View taken on the line B Fig. 1, and looking in the direction of the appended arrows;

Fig. 3 is a transverse sectional view taken on the line afi-wfl Fig. 1, and looking in the direction of the appended arrows;

Fig. 4: is a view similar to Fig. 3, but with parts shown in other positions; and

Fig. 5 is a transverse sectional view taken on the line x '-ra"', Fig. 1, and looking in the direction of the appended arrows, parts being omitted for clearness of illustration.

Corresponding parts in all the figures are lesignated by the same reference characters.

Referring with articularity to the drawing; in the embodiment of the invention therein shown, A designates a shaderoller, B designates spring means therefor, C designates'engagement means, and Band E designate, respectively,.normal stop means and automatic stop means, either of which means may co-act with the engagement means C in motion checking action, according'to the speed of roller rotation.

The roller A comp ises a preferably wooden body portion 6 having a journal, not shown, at its one end and whereby such end may be rotatably supported in a bracket in the usual manner.- and having a longitudinalbore 7 extending inwardly thereof its other end. The spring means B for i rusting the roller is shown as comprising a l .lical. torsion spring 8 having its one end secured to a rod9 which rod is disposed in the bore 7, and having its other end 8 se- H cured to a spring-clip 1O driven into the bore '7 at the bored and of the wooden body 6. The rod 9, spring 8 and clip 10 may be of the well known standard type and the mode o'fsecuring the spring ends to the rod and I clip may follow the usual practice, one end of the rod 9 being preferably insertedin the clip, 10 which is formed to receive the same.

Theengagement means C is shown as comprising an oscillatory pawl 11 mounted upon a supporting plate 12 as by means of a pivot 13. The pawl may be apertured at.

11 'toreceivethe pivot and may be confined between the plate 12 and a head 13 on the pivot the pivot extending into and being riveted onto the plate 12'as at 13 The plate 12 is centrally apertured as at 12 to receive the shank portion of a bracketengaging member 1.4:; such shank portion comprises a stud 1 1 fitted into the end of the rod 9 at the clip 10, and a tubular pivot portion .l4: fitted over the stud 14 the tubular pivot portion 14*, the stud 14s, the plate 12, and the rod 9 all being fixed and held together when the parts are in proper assemblage; the stud 14 is held to the rod 9 by a pin 14L passed through an aperture 14; provided in the rod and stud. The member 14 is formed at its outer end with a flat portion 14 adapted to be held in a vertical plane, and a ainst rotation, in a standard bracket, a projection 14 indicating that the st s provided with such projection is to be the lower edge as the flat portion is inserted in the vertical slot usually provided in the standard bracket for the correspond i end of the shade roller.

The pawl 11 at its free end is bifurcated to provide a notch 1.1 so that the pawl is adapted for engagement with bars of either the normal stop means or the automatic stop means.

The normal stop means l) is shown as comprising a series of :tour bars 15 preterably formed JH E I'SLllY with and struck out from a plate 15 and so providing a central aperture 15 in the plate 15 which aperture accommodates the tubularpivot 143 of the member 14, the .inner surfaces of the bars resting on such tubular portion i l" and so rot-stably supporting the plate 15 and the wooden body 6 attached thereto, will presently be described. The bars 15 are preferably arranged tangentially about the pivot portion 1 1 and each be arranged at right angles to adjacent bars, so together forming a sort of interrupted square each oar extending from one corner of thesquare toward another corner but terminating in a leading edge 1.5" a short distance from such corner and so providing an interspace between adiacentbars into which a prong 11" Of the bifurcated end of the pawl may fall. The bars extend across a pawlspacebetweentheplate l2 and the plate l5 the plate 15 and over the peripheral margin.

of the plate 12 and are preferably striick up from the plate 15* in a manner similar to the formation of the inner series of bars 15 of the means D but outwardly thereof, so providing for an annular space between the two series, the pivot and pawl being aocommodated in such space. The bars 16 preferably are arranged with their under surfaces inclined inwardly so as to present a leading edge 16 to the pawl notch for engagement by theprong 11 of the pawl 11, such prong 11 entering one of the interspaces 16 between adjacent bars 16 when projected upwardly with sufficient force by the bars of the inner series to raise the nose of the pawl to the zone of the bars 16.

it will be understood that any desired number of either the bars 15 or the bars 16 may be provided, the degree of roller rotation under the impulse of the spring before checking action may be had through either of the checking orstop means C or 1) being directly dependent upon the number of bars in the respective series.

The spring attachment clip is preferably provided with a pair of oppositely disposed reduced tips 10 and 10 which are inserted through apertures in the plate and the tips 10 and 10 bent over against the forward face of the plate 15, channels 17 being provided in such face to accommo date the tips and prevent their interference with pawl action. An aperture to receive the pivot portion 14 is provided centrally in the clip 10 and a washer 18 may be clamped between the clip 10 and the back face of'the plate 15 The parts thus being held in assemblage, the plate 15 with its bars 15 and 16 is secured to the spring clip 10 which is in turn fitted intothe bore 7 of-the roller body, so uniting these parts for joint rotation. A ferrule 19 provided with an aperture 19 through which the member l i projects is fitted to the wooden roller body 6 in position to serve as a housing for the parts. 7

' the member 14: and parts fixed thereto secured against rotation, the pawl pivot being so fixedly disposed at a point above'the series of bars 15, the pawl nose will be held, due to gravitatiomagainst one of the bars 15 of the inner or slow speed series. When the shade is unrolled in the usual manner as by drawing down on the lower marginal portion thereof, the pawl beingcut away as at 11 on its under side, will be thrown out of the interspace between two bars and so permit rotation of the roller body with its bars 15 and 16, the rotation being in the direction indicated by the curved arrow near Fig. 8. Upon drawing down the shade to the extent desired, it may be secured in its position of adjustment by allowing it to further movement by the spring. As the motion of the pawl is entirely dependent upon the speed of rotation of the bars 15, it may be caused to ride over each bar 15 and be projected vertically by each such bar as the inclined outer surfaces of succeeding bars impinge upon the pawl nose, each succeeding vertical projection of the pawl nose enabling it to ride overthe gap or interspace provided between adjacent bars 15 and so leap from bar to bar as long as supported by an intermediate speed of roller and bar rotation; this is the action of the pawl during the rolling up action of the shade under the torque of the spring and when manipulated so as to be fed to the v roller at a moderate speed only.

If, however, the shade is released at any point in its travel and in a manner permitting the spring to transmit a rapid rate of rotation to the roller, a bar'15 violently striking the pawl nose will send it flying upwardly to the zone of the bars 16 and the first of such bars 16 to present itself to the pawl nose will be caught thereby atits leading edge and further rotation prevented so bringing the roller to a stop almost immediately after a free start, and avoiding the damage and annoyance caused by the slamming and, impact of shade parts incident to the use of the aforementioned ordinary forms of spring'rollers- It is manifest that manychanges and*departures from the disclosure herein may be made in adapting the invention to various requirementsof use and service without departing from the spirit of the invention and the terms of the following claims.

Having thus disclosed my invention, I

claim and desire-to secureby Letters Patent:

elements of said series, and a second, series of elements rotatable with said body memher and against which thepawl is projected by an element of said first named series at high rate of speed of body member rotation; said pawl'engaging an element of said first named series to hold the body member against rotation under influence of the spring at slow rate of speed of body rota tion; and the leading and following edges of each of the elements of said first named series being disposed at differentrradial distances from the center of rotation.

52. A shade roller comprising a rotatable body member, a spring supporting rod extending into said body member and adapted to be held against rotation, a spring connected with said body member and said rod, means for rotatably mounting said body member, a series of elements rotatable with said body member and adapted for pawl actuation, a pawl held against rotation with said body member and adapted to fall under the influence of gravitation against said elements, and a second series of elements rotatable with said body member and against which the pawl is projected by an element'of said first named series at a high rate of speed of body rotation, said pawl engaging an element of said first named series to hold the body member against rotation under influence of the spring at a slow rate 'of speed of body rotation; the elements of said first named series being each provided with a leading edge which is presented to the pawl in a plane lower than the following edge of the element and whereby the pawl is impinged upon'to project the same upwardly and so permit the introduction of the leading edges of successively presented elements-of such series thereunder at a moderate speed of body rotation.

3. A shade roller comprising a hollow rotatable body member, a spring supporting rod extendinginto said body member, a

spring connected with said member and said rod, means for rotatably mounting said body member, means whereby said rod maybe held against rotation, an oscillatory pawl held against rotation about the axis of said body member, and a plurality of seriesof pawl-engaging elements secured to said body member for rotation therewith;

said pawl being adapted for engagement with the elements of one of said series as it falls under the influence ofgravitation at a slow speed of body member rotation to stop the body member and being adapted forengagement with the elements of the other series when impinged upon by the elements of the first series during high rate of speed.

of body member rotation to stopthe body member; and the leading and following edges of each "of the elements of said first series being disposed at different radial distances from the center of rotation.

1 4e, shade rollercomprising a hollow ro tatable body member, a spring supporting rod extending into said body member, a spring connected with said body member and said rod, means for rotatably mounting said body member, means for preventing rotation of the rod, a'pawl mounted so as to be held against rotation with said body member, an inner series of pawl-engaging elements rotatable with said body member and between which the pawl is adapted to fall and stop the body member when the body member rotates at slow speed under urgence of the spring, an outer series of elements rotatable with the body member and between which the pawl may be thrown by the elements of the inner series impinging thereon at a high rate of speed of body member rotation under urgence of the spring so to stop the body member; and the leading and following edges of each of the elements of said inner series being disposed at different radial distances from the center of rotation.

5. A shade roller comprising ahollow rotatable body member, a spring supporting rod extending into said body member, a spring connected with said body member and said rod, means for rotatably mounting said body member, means for preventing rotation of the rod, a pawl mounted so as to be held against rotation with said body member, an inner series of pawl-engagingelements rotatable with said body member and between which the pawl is adapted to fall and stop the body member when the body member rotates at slow speed under urgence of the spring, an outer series of elements rotatable with the body member and between which the pawl may be thrown by the elements of the inner seriesimpinging thereon at ahigh-"rate of speed of body member rotation under I urgence of the spring so to stop the body membertthe pawhengaging surfaces of the inner series of elements being so formed that at a moderate speed of rotation under the urgence of the spring the pawl will be projected into but not across the space between the two series of elements by the impingement of successively presented elements of the inner series thereagainst so preventing the pawl entering spaces between elements of the same series during such moderate speedof body rotation; andthe leading and follow-

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5853040 *Jan 29, 1997Dec 29, 1998Benthin AktiengesellschaftCassette blind with brake coupling
Classifications
U.S. Classification160/296, 160/301
International ClassificationE06B9/80, E06B9/90
Cooperative ClassificationE06B9/90
European ClassificationE06B9/90