US1509707A - Sliding sash window - Google Patents

Description

Patented Sept. 23,

UNITED STATES i,599,707 PA'EENT OFFICE.

ERNEST L. BURKETT, 01.7 GBEENSBDRUGH, VECTORA, AUSTRALIA, ASSIGNOR 0F ONE-HALF TO SIMON JOSEPH, 0F MELBOURNE, VICTORIA, AUSTRALIA.

SLIDING SASH WINDOW?.

Application filed .Tune 29, 1921. Serial No. 481,307.

To all whom t may concern.

Be it known that l, ERNEST Lun BURKETT, carpenter, a subject of the King` of Great Britain and Ireland, and a resident of the ppst town of Greensborough, in the shire of eidelberg, county of Evelyn7 State of Victoria,` Commonwealth of Australia (whose post-office address is Main Road, in the said post town of Greensborough), have invented certain new and useful Improvements in and Connected with Sliding Sash Windows, of .which the following is a specification.

'Ifhis invention relates to sliding sash windows and its primary object is to dispense with the usual ropes or cords and pulleys at present employed to connect the balance weights with the sashes in such windows. Thus the well known disadvantages7 such for instance as the breaking of the weight cords,

attendant upon the use of such devices, is

overcome.

The invention is simple7V inexpensive and efficient and contains no parts liable to derangement. Furthermore, it may be fitted without difficulty to existing as well as to new windows. 4

Referring to the drawings which form part ofthis specification Figure 11 is a part sectional front view of the invention,

Figure 2 is a vertical section through the window frame the sashesb'eing removed to show the toothed wheels inthe stiles.

Figure 3 is a cross section on line A-A. of Figure 1.

Figure 4 is a perspective view of one of the bearings for the toothed wheels.

Figure 5 is a plan of said bearing.

Figure 6 is a perspective view of a window sash according to the invention.

Figure 7 is a perspective view of a balance weight in accordance with the invention.

Figure 8 is a side view showing a modified construction of the rack on the side of the sash.

Figure 9 is a part sectional front view of Figure 8.

In the drawings, the numeral 2 indicates the window frame which is provided with the usual inner orv front beads 3, outerbeads 4 and intermediate beads 6 whereby the inner and outer sashes 7 and 8 are guided in their sliding movement along the stilcs 9. Formed within the window frame and behind the stiles 9 are the weight passageways 11 the two said passageways on each side of the window being separated by the partie tions 12.

Vificcording to the invention there is formed through each of the stiles 9 and approximately at the mid-length thereof, an opening 13. Into this opening fits a bracket or bearing which is preferably constructed as shown in Figures 4 and 5 and comprises two opposite side cheeks 14 having bosses 16 within which are formed open mouthed gul-v lets 17. The hearings are also provided with ianges 19 in which are holes 21 to accommodate screws 22 whereby the bearings are secured to the stiles with the side cheeks 14 disposed in the openings 13.

Accommodated in the opposite slots 17 of each hearing is the axle 23 of a toothed or sprocket wheel 24, the teeth of said wheels projecting into the weight passages 11 and also outwardly through the openings 13 in the stiles as in Figure 1. It will be evident from the foregoing that the open mouthed slots 17 of the bearings permit of the toothed wheels being readily placed in and removed from the bearings when the sash is removed.

In conjunction with the foregoing a toothed rack 26 is carried preferably on each side of each o f the window sashes. These racks may be constructed of metal, fibre, or other suitable material and may be let into vertical grooves 27 formed in the sides of the sashes as shown. Said racks are adapted to engage the toothed wheels 24 in the window frame. Two of said racks and toothed wheels are preferably provided for each sash although it will be evident that the invention is capable of operation with a rack and toothed wheel on one side of the sash only.

Formed at the lower end of each sliding sash and on the inner side thereof are rehates or recesses 28 which are adapted to pass over the projecting parts of the toothed wheels 24 to permit of the sashes being read* ily introduced into the upper part of the window frame and the racks 26 engaged with the toothed wheels.

Accommodated within each of the weight passage-ways is an elongated balance weight 29 of metal or other suitable material and having along one of its vertical faces a toothed rack 31. The racks of these balance weights engage the toothed wheels 24 in `lllaeh balance weight may, if desired, he provided with 'pockets or cavities 32 to hold shot or the like whereby the weights may be rendered heavier or lighter according to requirements.

Iny a modification as seen in Figures 8 and 9 a vertical groove 33 is formed in each side of the window sash and is covered by a sheet `'metal plate 34 screwed or otherwise attached to the side of the sash. Apertures 36 are formed through that portion 0f the plate 34 which is disposed over the groove 33 these `apertures, being preferably formed vby stamping or punching from the sheet Ymetal thus producing inwardly projecting tongues 37 which may abut against the b'ottom of the groove 33 as shown and thus effectively reinforce the plate and form a resting surface for. engagement with the teethot` the wheels 24 which project through the apertures 36. This form of rack may be simply and cheaply made and provides a strong and light construction.

In operation, as thesash is moved downwardly or upwardly the racks thereon rotate the toothed wheels which in turn cause the balance weights engaging them to slide up jor down along lthe weight passageways in the opposite direction to the movement of the sash.

It will be evident from the foregoing that the toothed balance weights act to retard or control the sliding movement of the sashes without the employment of cords or ro es and pulleys as at present, thus rendering the structure immune from deran ement through breakage of such cords or ouliug of the pulleys.

The particular construction and arrangement of parts described and illustrated may obviously be altered or modified in various respects and additional appurtenances or refinements may be introduced without departing trom the spirit and scope of the invention.

Having now described my invention what I claim as new and desire to secure by Letters Patent is z- A bracket adapted to fit in an opening formed approximately mid-length the eentral beading of a sliding sash window` said bracket heilig of plate formation with a. central gear-receiving opening having its side walls extended outwardly with respect to the window sash, said walls being recessed to receive a supporting shaft, the recesses opening through the tace of the bracket, and to the gear receiving opening, a supporting shaft mounted in said recesses and limited in movement toward the rear of tho bracket and freely movable toward the'face of the bracket, a gea;1 mounted on said shaft yand extended in both directions beyond the bracket, and gear racks adapted to be secured to the window sash and operating weight therefor, said racks being simultaneously and reversely operated in the movement of the gear.

In testimony whereof I my signature.

E. L. BURKETT. lVitness:

JACK NANo/n.

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