US891853A - Sash window and balance. - Google Patents

Description

No. 891,853. PATENTED JUNE 30, 1908.

J. NERBN.

SASH WINDOW AND BALANCE- APPLIOATION FILED MAY 10, 1907.

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With 2 0666 I n 716 ntor PATENTED JUNE 30, IN. V

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I J. NBRB SASH WINDOW AN APPLICATION FILED H In ventar M Wjlnesses I m. 891,853. I PATENTED JUNE 30, 1908. JFNEREN. SASH WINDOWAND BALANCE.

APPLICATION FILED MAYIO, 1907.

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In 06 mi 07 No. 891,853. PATBNTED JUNE 30, 1908.

J. NEREN. SASH WINDOW AND B ALANUE.

APPLICATION TILED MAI i0, 1907.

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Mil/leases lnven zar UNITED STATES PATENT OFFICE. JOHN NEREN, OF oREBRo, SWEDEN, ASSIGNOR or ONE-HALF TO RHEDIN, GOLDKU'HL & oo.,

. Y 0F ooTTENBoRG, SWEDEN.

SASH W INDOW AND BALANCE.

Specification of Letters Patent.

Patented June 30, 1908.

. within a pivotally mounted casin connected osition.

by a rope, a rack, or other suita le connection, with the sash in such a manner as to coil or uncoil the spring according as the sash is moved in one or the other direction. For

I adjusting the tension of the spring in such an means referred to has been situated entirely outside the casing so as to occupy a considerable space.

One object of this invention is to obviate this inconvenience by placing the whole regulating device within the spring casing.-

In apparatus of this kind a alancing can be said to be obtained if the springs are able tov retain the sash in any position between the extreme lower position and the extreme upper one but, on account of the springs slackening as the sash is raised, the retaining power of the springs grows less and less as the-sash is raised so that the power is often insuflicient when the sash is near its highest It is true that this can be reguated by ti htening the springs harder but in such case tie springs will, on the other hand, offer too great a resistance when the sash approaches its lowermost position. A further object of this invention is to overcome this latter drawback.

To the formerend, the invention consists, chiefly, in making the spindle, or a part spindle from turning may also be situated within the spring casing. In this 'case the whole pivoted part of the apparatus may,-

outwardly, have the form of a cylinder, or a cylindrical disk, of the least possible dimensions and, furthermore, be so arranged that the casing of the apparatus can fit tightly to the 'latter,;at both sides thereof. The a paratus, as a whole, will thus take up only ittle room and can easily be entered into the narrowest window-frames. On account of the latter property the a paratus is es ecially preferable to those hit erto known w ich, on account of the large space required by the same, cannot be generally used. The latter object is attained by producing between the movable sash and the stationary frame a friction adapted to aid the springs in retaining the sash in any position without the said friction forming any obstacle to the free movement of the sash up or down and without any hindering overtension of the springs causing a heavy movement of the sash being required.

The sash is suspended in a known manner in two coiled springs each placed at one edge' of the sash, and the said friction is produced by simply making the one s ring somewhat stronger than the other. in consequence hereof, the sash is exposed to a torquetending to turn the sash in-a somewhat obli ue position in the frame so that two diagona y opposite corners of the sash are pressed somew at against the frame, thus affording the friction contributing to the retaining of the sash. The turning of the sash in a somewhat oblique position is made possible by the greater or ess' windage always existing between. the sash and the frame. When the sash is to be moved, the friction can, if

necessary, be easily removed by slightly zontal section on line AB of Fig. 2.

side-wall of the kept in engagementwith the apertures 11 by,

' position of rest.

shows, infull size, a. balance viewed from the side, partly in section. Fig. 3 is a hori- Fi 4 is a horizontal section of a balance. Fig. 5 is a similar view of the balance showing the parts in other .positions. Figs.- 6 and 7 show details appertaining to the apparatus illustrated in Figs. 4 and 5. Fig. 8 shows a modified form of the apparatus. Fig. 9 shows the same apparatus with the parts'in other positions. Fig. 10 is a detail view of the same apparatus showing a section on line GH in Fig. 8. Fig. 11 shows the arrangement for sus ending the sash in such a manner as to pro uce the necessary friction between the sash and the frame assisting in balancing the sash. Fig. 12 is a horizontal section on line CD' of Fig. 11. Fig. 13 shows, in full size, a balance and an arrangement assisting in retaining the sash in its uppermost position. Fig. 14 shows the lastmentioned arrangement viewed from the edge of the sash. Fig. 15'is a horizontal section on line E-F of Fig. 13.

Referring to the drawings, each sash 1 is.

retained by two balances entered into the frame 2 at each side of the sash. Each balance consists of a box 3, or the like, in which two opposite sides form bearin s for a spindle 4 having a casing 5 loosey mounted thereon. The spring 6- inclosed within the said casing is attached, at one end, to the casing and at the other end to the. spindle 4. The casing 5 is outwardly formed as a drum or pulley having wound thereon a line 7 or other flexible connection attached to and carrying the sash 1. Each sash is thus carried by two lines 7 each placed at one side of the sash as clearly'seen in Fig. 11. This balance works in such a manner that the weight of the sash is counterbalanced by the tension of the spring. By making the spring thin and of a suitable length, the tension imparted thereto can be kept nearly constant, so that the sash can be retained in any desired Nevertheless, after some use the spring slackens and necessitates an adjustment. This adjustment is performed by means of the arrangement to be described. Q

In the embodiment illustrated in Figs. 4 to 7 the spindle 4 has, at its one end, a slot or groove 8v adapted to receive a catch 9, or

the like.

The catch 9 has two clutches 10 fitting 1n corres 'onding a ertures 11 in the ox 3. e clutches 10 are a spiral spring 13 located in-a bore in the spindle 4, by which the latter is secured in position.

In order to turn the s indle and, thereby, regulate the tension of t e spring 6, a key 14 (Fig 3) one end of which forms a blunt doghoo is-inserted through a hole 12 in the frame 2. This hole is situated in the prolongation of the spindle 4, so that the end of the key 14'enters into the slot or groove 8 in the spindle 4. When pressure is exerted upon the key 14,- the catch 9 is released and the spindle becomes free, whereupon the tension of the spring 6 can be increased or decreased at Wlll by simply turning the key in one or the other direction. When the key is withdrawn, the spring 13 presses the clutches 10 into the apertures 11, so that the spindle is again secured in position. y

In order to. avoid the loose catch the somewhat modified arrangement illustrated in frame. When the key is withdrawn, the

spindle is again locked in position by the spiral s ring 13 pressing the'lu s 15 into correspon ing depressions 16in tie Wall of the box 3.

The friction between the frame and the sash assisting in retaining the latter is obtained by the following arrangement. As before stated and clearly shown in Fig. 11,

each sash is carried by two springs 6, each' situated in a casing 5. Of these two springs, the one is stronger than the other, in consequence whereof the sash l-is caused to take up an oblique position in the frame 2, as shown in Fig. 11, so that the dia onally opposite corners 17 and 18 of the sash 1 are somewhat pressed against the inside of the frame 2 and, thereby, produce the desired friction, by which the sash, with a comparatively slight cooperationof the spring power, so to say,-carries itself.

The arrangement co-acting in retaining the sash in its uppermost position may consist of one or more curved springs 19 situated at one or both sides of the sash (see Figs. 13

and 14). One end of this spring is attached to the sash 1, while the other end is free to glide thereon by the same being provided with a longitudinal slot 20 (Fig; 14) ada ted to receive a screw 21, or the like, by w 'ch the spring 19 is kept in contact with the sash.

As easily understood, the spring will be V straightened, if exposed to pressure from without, and then retain its curved form, when the pressure ceases. As shown in the drawings, the pulleys 5 project somewhat inside the frame 2, so that the lines 7 get totally clear and can "be wound up between the ed e flanges of the pulleys (see Figs. 13

and 15 These projecting parts of the pulleys will cooperate with the springs 19 in such a-manner that, when the sash is raised and the s l s 19 pass the pulleys 5, the latter straighten the said springs by pressing a spring situated in a cavity same toward the sash so as to allow the latter to pass, whereupon the springs 19 retain their former shape and are supported by the pulleys 5, as s own in Fig, 13. The springs 19 will then ca a great part of the Weight of the sash. en the sash is lowcred, the springs are first pressed toward the sash, when passing the pulleys. In lieu of the springs 19 elastic hooks or the like may be employed and in lieu of the pulleys 5 other pro ecting parts adapted to carry the slprings or similar elastic parts may be used. he springs or elastic arts can also be arrange at the inside 0 the frame 2 and the p r0 ections cooperating with the .same be arranged at the sash.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is g 1. In a sash balance, the combination of a spindle, a coiled sash-balancin spring attached to the said spindle, a catch preventing the. spindle from turning, when the sashbalancing spring is coiled or uncoiled, and a in the spindle andacting to retain the catc in o erative posi tion, said catch being releasab e by outward pressure-against the action of the catch-retaming spring forenabling the tension of the sash-balancing s ring to be adjusted, substantially as an for the purpose set forth. 2. In a sash balance, the combination of a spindle, a coiled sash-balancing spring attached to the said spindle, a catch movably mounted in a slot in the said spindle, and a spiral spring situated in a cavity in the spindle and acting to press the said catch in e agement with a stationary part, substanti y as and for the purposeset forth.

3. Ina sash-window, the combination of spindles journaled at each side of the sash,

sash-balancing s rings attached to the said spindles, one 'o -the said sp' s being stronger than the other, means a apted to prevent the s indles from turning, and springs sltuate in cavities in the spindles and acting to normally keep the said means operative, said means be' releasable by outward pressure, substantially as for the purpose set forth.

4. In a'sash-window, the combination of spindles journaled at each side of the sash,

sash-balancing springs attached to the said spindles, one of the said sprin s being stronger than the other, means ad apted to prevent the spindles from turning, springs situated in cavlties in the spindles and acting to normally keep the said means operative, said means being releasable 'by outward pressure, and elastically yieldin parts carried' b the sash, at the sides t ereof, said parts eing adapted to cooperate with proecting parts, situated in the frame, in such a manner that, when .the sash approaches its uppermost position, the yieldmg parts are pressed, by the saidflprojections, toward the sash and are then owed to expand, after havingpassedthe said projections, so as to bear on the latter and assist in retaining the sash in its uppermost position, substantially as and for t e purpose set forth.-

5. In a sash-window, the combination of spindles journaled in the frame, pulleys journaled about the said spindles, coiledsprin s attached, at their .one ends, to the .spin es and, at their other ends, to. the

pulle s, means adapted to prevent the spin es from turning, s rings situated in cavities in the spindles an acting to normally keep the said means operative, said means being releasable by outward pressure, flexible connections between the pulleys and the sash, and elastically yielding parts carried by the sash, at the sides thereo in operative relation to ,the pulleys so that, when the sash In testimony whereof I have signedmy "name to this specification in the presence of two subscribing witnesses.

JOHN NEREN. Witnesses;

Erma Znrrnnsrnom,

Enrrrr OLssoN approaches its uppermost position, the said y1

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