US1787111A - Sash balance - Google Patents

Description

10 or jointly.

Patented Dec. 30,1930 I I t s U ITED stares PATENT OFFICE ea e ALA CE Original appliea tion filed June 25. 1927, Serial No. 201,455.' Divided and this application filed January 18,

' 1928. Serial no. 247,651.

. My invention relates to improvements in rollerintermediatethe two stationary roilwindows and moreparticularly to windows ers. The movable rolleris mounted on a of the kind'comprising double-hung sashes, weighted member, which is movable up and andis a division of my; c'opending applicadownwithin a side chamber in the frameti-on for Windows, filed June 25, 1927, Serial work, and is adapted to be releasably re- 55 No.2O1A55. I p strained from the movemenu'at will. One object of my invention is to provide In order to facilitate a better understandmeans-whereby aplurality of sashescan ing'ofmy invention, the following descripreadily slide up and down'either individually tions are given with reference to'the draw- 1 mgs. 7 j j A otherobject'of myinvention is to obtain Referring to the drawings, a window emmeans for holding all of the plurality of b-odying myinvention comprises,in general, sashes or e1ther-one of them at any desired a rectangular framework 1,hav1ngaplurahty heights;v of usual longitudinal grooves in each of its A further'object. of my invention is to vertical sides, and inner and. outer sashes 55 or stationary.

obtain means for providing counter-weights 3 and 4, for holding window-glasses therefor the two sashes combined and also prowith and adapted to slide up and down along viding guide means for sash-cords, which the vertical grooveswith theirvertical side guide me ns may functiona's either movable edges guided thereby, as tlsu'al- At the top portion of eachvertical side of -70 .A still further object-ofmy invention is to the frame-work 1,'there are disposed in parprovide means for guiding the counter-- allel two stationary pulleys or guide rollers.

weight and also for preventing it fromany One of such rollers is shown by the reference lateralimove'ment, together'with mear'is for 5, the other being disposedbehind the roller releasably restraining the counter-weight 5 on the commonaxis. The rollers may have 75 Q I from-its vertical'movements to hold it at any peripheral grooves. The counterweight desired height is adapted to travel up and down withinja There are other objects and particularities vertical side, chamber formed in the frame- 7 of my said invention,'which,together with work 1 behind its grooved side. A rope or the-f-oregoin'gs, will appear in the following sash-cordl is provided extending between 30 descriptions, with reference to the accom: the inner and outersashes past the stationary p'anying drawings, wherein: rollers such as 5, and a movable roller 14 Fig. 1 is an inside elevational View of my mounted on, the counter-weight 10. window, partly in section and partly broken In each sidechamber of the framework 1 away. is arrangedja link structure 70. The strucs5 Fig. 2 shows a sectional plan of a part ture: may comprise a pair of levers 71 and 7 2, taken at line II-II in Fig. 1. r s respectively pivoted inthe upper and lower. Fig. 3 is a sectionalplan View, injpart, end portions of the weight chamber on the taken at line III- 111 in Fig. 1. a 1 axis 73 and 7 i respectively located therein by Fig. i is a detail plan showing one pair of suitablebearings means, such as 75 and 76. 90

the rollers which have fixed bearings, The respective ends of the levers land 7 2 In ractising, my invention, I provide a reoperatlvely connected by a pair of verpair of sashes,'each slidablyguided in snittlcal links 77 and 78. The lower lever 7 21s able grooves at its SlClQS in the framework of provided with an armportion, at the outer window, and asash cord secured at'the ends end of which one end'of a rod 79 is opera- 95 to the sides ofthe respective sashes, forming tively connected therewith. A similar'link an open loop ending at the respective sashes. struct re is connected to the other end of The cord extends past a pair of stationary thei'od 79.

guide rollers mounted in the upper portion 7 The weighted member 10 is provided with hf the framework and also a movable guide side grooves 80- and .81 adapted to receivethe we 1;: members the other of the stationary rollers to the other end secured to the other of the sashes;

When the rod 79 is actuated to the left, the levers 72 and 71 are turned anti-clock -wise, and the links? 7 and 78 are made to approach each other, thus shortening the: distance engage the grooves 80 cient pressure thereon to restrain the weighted member 10 from its vertical movements. When the rod 79 is actuated to the right, the braking action on the weighted member 10 will be released, as will be readily understood. vVith this arrangement,the window sashes may be operated to slide up and-down or jointly, and also thev 10 'may be properly and 78, enabling smooth operations of the sashes.

either individually weighted members guided by the links 77 Injorder to facilitate the axial operation of the rod 79, a member may be fiXed'to the rod 79. The mem.ber,2() has a cam surface 21, adapted to cooperate with the inner end I of a handle lever 22 pivotally mounted onthe bottom portion of the frameworkby. means of a pin"23. V a

When the link structures are applied to the weight 1 0 when the latter is at any point, the rollers 14 carried thereby assume a corresponding fixed position.

' ropes 13 may be considered, at present, as

The respective extending between the pair the stat onary rollers 5, the" tionary at of sashes past rollers 14, sta- In order to move both of the sashes 3 and {l upwards or downwards simultaneously, or

jointly, the brake devices may be released to permit free =movements of the weighted members. 10, and the sashes can bemoved jointly to any. desired height, for the uppermost position. 7 weighted members 10 function as the counter example,

1 weight for the bothsashes combined, as they are now suspended from the sash cords 13.

Each sash 3 or 4 may be operated indi .vidually and caused to assume any desired position independently of the other, as the weighted members will be lowered or raised just halfthe distance travelled by the individual sash by aid of the movable pulleys 14. It will be seen that, since the weighted 10 are restrained from any lateral sashes through the sta- I tionary guideroller 5, past the rollers 14 and scribed, but only in so therebetween, and the link edges willgclosely and 81 with a. sufliinvention. is 7 a v side chamber,

j a weighted member In this case, the.

movement and vertically guided by means of the link structure 70, the sashes can slide up and down very smoothly. 7

Although I have shown a particular embodiment of my those skilled in the art that various modifications and changes may be madewithout departing from the spirits and scope of the invention, and I do not desire to limit the invention ,to the specific modification defaras set forth in the appended claims.

aving now particularly described and ascertained the nature er my said invention and in what manner the same is formed, I declare, that what I cla m as my to be pera pair ofsashes vertically slidable in said frame, a -weighted member vertically movable within aside chamber in said frame,a roller carried on said weighted member, a pair of guide rollers mounted above said side chamber and having fixed bearings, a sash-cord secured to one of said sashes and extending over one of saidtsta tionary rollers, engaging under said weight carried roller; and over the other stationary roller and having the other end secured to the other sash, thus suspending said weighted member therefrom through said Weight carried roller, a pair of verticallink rods in said side chamber for guiding the vertical movements of saidjweighted member there between, and means for moving said link rods toward and from each other for applyingbraking action on or releasing said weightedmember. present, and the otherstationary .rollers in the top of the framework, inthe,

2. A window comprising a frame having a vertical chamber at of vertically slidable sashes in said frame, vertically movable in said chamber, a roller revolubly mounted on said weight member. and movable therewith,

a pair of revolublerollers above said cham- .beer and having 'fixed bearmgs, a sashcord having its ends attached to the respective sashes, said sash cord passing over each of said pair of rollers and under said weight carried roller, a pair of braking and guiding link rods in said chamber and at opposite sides of said weight, a-pair oflinks one having a fixed pivotin the upper end of the said in the lower end 7 link rods being pivotally connected to the said links, andmeans to operate said links to cause the link rods'to brake or release the weight; w

In witness whereof I aflix my signature. KITAROKATOW.

invention, it-will be obvious to one side thereof, a pair.

inc

chamber and the other having a fixed pivot of said chamber, the said 3

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