US1878710A - Roller window screen - Google Patents

Description

Patented Sept. v2120, 1932 Erica WILLIAM W. WATSON, or :reI/IEsroWN, NEW lYORK ROLLER WINDOW SCREEN Applicationled September 14, 1928. Serial No. 306,051.

This `invention relates to rollerwindow screens and more particularly vto limprovements in the details of construction thereof.

In itspreferred embodiment, this invention 'JLB contemplates the provision Vof a metal roller window screen, Vthe construction of which provides for greater eiflciency, adaptability -and controlled operation. A further contemplation of this invention, is the provision of improved structural details by reasonof which the device is made practically impervious tothe usual Wear and disorder `encouu' tered in operatingscreens of this type. e, l Heretofore, in the manufactureofroller window screens, insucient attention has been centered `upon details Vwhich go to make up a.. device of vthis kind. As a result of this, the screens now on themarket do not V meet the requirements eXacted ofthem land 20,V constant replacement thereof is necessary.

. Applicant discloses, in the following specification, a roller window screen structure in which is provided a spring' actuated rollerv mounted-upon ball bearings which thus insure freeand even action of `the screen when moved from one position to another. A suitable latchV and locking device formed inthe Vmetal guide channels and the operating bar, Y

controls the spring actuated roller aswelll as l preventing raisingA ofthe screen from the outside either by design or inadvertence.-

The principal object of this invention is the provision of a roller window screencontained within a case supported in the head of '35 the window frame ,and which is adapted to be L readily 4withdrawn therefrom to completely screen a givenwindow.

Another object of this invention is the provision of a screen supporting roller having 'means by which toadjustv the tension of the spring which acts tol retract the screen.'

f A further object of Ythis invention is the provision of a screen supportingroller mountedupon ball bearings which assure a free'and even action of the screen. y

A still further object of this f invention the provision of an operating bar having an automatic latch for ordinary operation and a positive lockrwhich, when the screenis `fully extended, prevents undesired liftingof the screen from the eXterior'of the window.k

Other andfurther objects of this" invention'will appear from a considerationof the Afollowing specification taken iu'connection 55 with the accompanying drawing, and in Awhich y 1, v. Y '.Fig. 1 is a front elevation of"awindow frame having secured theretoand inV partially Vextended position one modification of the present invention; l Fig. 2 is an enlarged sectional viewand disf closes the details ofl construction of ythe screen rollerand actuating spring; o y FigQ-B vis a view similar Vto that of Fig. 2 65 showing. the actuating spring in the position it assumes when the screen Vis rfully extended; Fig. 4 is .an end view of the'structure Yshown in- Fig.' 3 being taken on the linea-4: of that ligure and shows `Ythe device by which initial L v or any varying` degree of tension of the'jactuating spring is obtained. Y Referring to the drawing, thereference numeral 10 is employed to designate a window f frame in which is mounted,within or adjacent 7,.

the head jamb 11, a roll case 12. Secured to the vertical jambs ofthe frame 10 in accorde ance withiany one of the showings of the Y drawing, are metal or wood guide channels 18 and 14. Extending` from the roll case 12, f asshownfin Fig. 1, is a wire mesh screen 15, having secured at the lower edge thereof an operatingbar 16, through the use of which. the screen may be moved to or Yfrom the roll case 12 as desired. Y f y The roll case 12, as shown Vin Figs. 2,3, and 4 of the-drawing, is formed from a recytangularly .shaped strip, f the longitudinal edges of which are properly :spaced to provide passagefor the screen ltherethroughan YThe ends of th-e-rollcaseare provided with projecting tongues 18 which are ,adapted to engage endV plates 19 throughl suitableopenings and are headed over to secure the `endV plates to the casewhereby to create a rigidinfi and substantial box-like structure. V.The'end plates 19, which are flanged on three sides y tojenclosethe ends of the case 12have formed suitable openings therethrough and it is by means of these tongues and the screws 23 that the roll case 12 is secured to the vertical v jambs of the frame. The lower horizontal 5 wall 25 of the case 12 terminates in a roll 'edge 26 spaced .a slight distance from the vertical wall 27 of the caself In order to vsupport thevaxlef30, `which c a-rries the screen rewinding mechanism, the end plates 19 are provided with centrally located indented portions 32 (Fig. 4) Two olset ribs 33V are formed in the circumferential walls of the portion 32 being diametrically opposite each otherl andfor .'a'fpurposel-- about to4 be described., A centrally located flanged opening 34 is provided in thel de`- pressed portion 32 and is of a diameter suflicient to permit the free entrance of the end of the axle 30. YThe ends of the; axle 30 are provided with slots 35 adapted tobeengaged by 'tonguesformed'upon lock washers 36. Each Alock washer 36 `is provided with twodiametrically.` opposite engaging surfaces 37 which, when itis in positionupon'the axle '30, permits rotation of saidl axle in but one direction, When the axle isrotated in a ncounter clock-wise direction','byfmeans o f a tool adaptedftoit the slot35, the contacting surfaces 37of the loclrfwasher 36 ride out- 30 wardly upon the raised rib surfacesf33of the 'indented portion 32. "However, when it'jis attempted to rotate the axle in a clock-wise direction the surfacesV 37 ofthe washers instantly engage the'ribs 334thereby preventing any 'move1nent in this direction. j i Adjacent the indented portions 32 of the plates 19 and mounted'upon each end of the axle 30 vare ball bearings 40. Supported by fthe bearings 40V isa cylindrical roller 41, the bearings 40 being pressed' uponj the axle 30 and the roller 41 also being pressed into engagement with lsaid bearing. Between'the lend plates 19 and the ends of the roller 41 'are thrust washers 42, the purpose of which is to prevent the'roller from coming into con- .tact with the plates '19. 'These washers have jjanpopening therethrough by which to mount "them upon the'indented portions 32. It is *for retraction ofthe screen, a `certain amount of end play willoccurandjwithout the aid ofthe Vwashers 42, the eiiicient operation of kof which being dependent uponthe length of the spring 45.v The spring 45` en'cases the sleeve 43one end thereofy extending beyond means of a strap 46, welded to' or otherwise v suitably fastened to said axle,'w`hic'h strap isV provided with` a loop 47 to 4whichthev endrection.

obvious'that as the roller rotates in one di- A rectionor the other to permitthe extension roll case,ran axle supported inthe ends ofl- `vsaidcase, a roller'enclosingfsaid axle, bear- N the roller would be greatly impaired. Loosely 'a engaging the 'axle '30'is a slee'ye 43, the length rection said washers slide over said ribs aus .spring 45 will ybe tightened and reduced in 75 diameter, the sleeve 43 preventing reduction beyond the-elastic limit of said spring.

Y While only one modification of the roll case p andseveral applications to window frame structures have been shown and described in conjunction with applicants invention, it is obvious that other modifications or adaptations maybe made without departing from th'e'spirit and scope of the invention as set forth in the following claims.l is. 35' Having thus set forthmy invention,what

I claim.- as new and forwhich I desirefpro- Vte'ction by Letters Patent is:

1. In a roller windowv screen structure,"fa roll case, a spring roller, spring tensioningeo means, VVsaid means comprising a roller axle, v aflock washer secured to said axle, and means in saidcase engaging said washer whereby7 to prevent rotation of said axle in but one di- 2. In a ro1ler`window screen structure, a roll case, an end plate in said case having an-opening therethrough, a roller supporting 'axle in saidvopening, alock washer secured to said axle'a'djacent said plate,fand.00

`ribs in said plate cooperating with said washer whereby to' prevent rotation of said'ax'le `in but one direction.

3; In a roller window screen structure,a

Vroll case, Va spring actuated roller in saidi105 case, spring tensioning means comprising ribs formed 1n the end plates 'of said case, an

axle projecting through said roller andl supported' in said plates, lock washers secured to said axle adjacent the ends thereof, said' 3110 washers'being adapted, when rotated in one direction,'to engage said ribs whereby to prevent Vrotation ofsaid axle.

V4. In a roller window screen `strueture,a 115 ings mounted on said'axle, said bearings supportingsaid roller, ribs formed in said case ends, lock washers keyed'to said axle andengageable with saidribs, anda spring enciricling said axle, said springbeing attached at opposite ends to said axle and said roller whereby ,when said axle is vrotated'in one diing an increase in the tension of said spring. 5,. In a roller window screen. structure, a

roll case, a reciprocable roller in saidv case, Y a unidirectional rotating means in said roller, Y most coil ofthe spring is fastened.V "Ihe other?.

65Lendf of the'spring'45 is.` engaged with the4 said` means comprisinguan axle, bearings, mountedjin and supporting said roller,'aV130 sleeve on said axle, and a spring attached to said axle and said roller, ribs formed in' the ends of said case and lock Washers secured to said axle, said Washers being adapted to engage said ribs whereby totension said spring by preventing rotation of said axle With said v roller when said roller is manually rotated.

6. In a roller screen structure, a roll case,

end plates in said case, a roller supporting axle mounted on said end plates, ribs in said plates, and means on said axle cooperating With said ribs to limit' the rotation of said axle to one direction. t

In testimony whereof I have aixed my signature.

WILLIAM W. WATSON.

zo v Gill

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