US1646908A - Pulley for balanced window sashes - Google Patents

Description

1927' A. w. GOLDMAN PULLEY FOR BALANCED WINDOW SASHES Original Filed Jan. 19. 1926 Futenteel 25, 1927.

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PULLEY FOR BALANCED WINDOW SASl-IES.

Original application filed January 19, 1826, $c1ia1 No. 82,201. Divided and this application filed October My invention is a pulley for balanced sliding window sash.

A, feature of my invention is in the construction of double pulleys used for balancing window sashes, these being constr cted with sheet metal frame or casing with pulley wheels mounted therein the frame being supported by wood screws which pass through the pulleys and form the pintles thereof, and also being partly supported in the frame by the central bead ot the sash.

Another detail feature or my invention is forming the housing or casing for the pulleys of sheet metal bent to shape, this haringthe two inner ends ol a sheet pressed inwardly and forming a central partition 'lrom the lower part of the pulley to a position. adjacent the top and having the upper flanges of the sheet bent over the top forming a top closure for the casin The lower flange of the sheet bent to term a bottom closure for the pulley, this closure allowing the sash cord or chain to pass upwardly on one side, across the pulley at the top of the casing and down on the other side.

My invention is illustrated in the following drawings, in which;

Figure l is a verticaleection through a window frame having a sliding sash indicating my pulley fitted therein;

Fig. 2 is an elevation of the double pulr;

Fig. 3 the line Fig. 4 show i ng is a cross section of the pulley on 33 of Fig. 2;

is a perspective view of the pulley the lower part ol the casing;

is a perspective view shmving the top part of the casing;

Fig. (3 is a detail showing the manner of attaching the pulley chain to a sash, indieating the form of heel; used;

Fi 7 is a further detail of the type of hook taken at right angles to Fig. 6.

The window frame and sash illustrated, to which my pulley is connected is constructed substantially as follows:

A sill 1 extends across the bottom of the frame. preferably being inclined at an angle slightly downward and outwardly to give a rain drip. n

Single boards 2 forming stiles extend upwardly from the sill and are joined by a cap rail 3, this being formed of a single board. The sill extends outwardly beyond the outer edge of the stiles as indicated by Serial No. 142,918. r

the numeral l and has an outward projection on its outer end on the wall portion, this being adapted to extend beyond the wall line of the building.

inside stops 6 are attached to the stiles and similar stops 7 and 8 to the sill and cap rail. respectively. A. center head 9 is titted preferably in a rabbet 10 on the top rail and on the stiles. (his forms a separating guide for the inner and outer sashes.

The sashes themselves are of substantially the ordinary construction, the inner sash being designated by the numeral 11 sliding between the stops 6, 7 and 8 and the center beads 9. the outside of the center beads. The sashes are balanced by means oi a sash chain 13 which passes over the double pulley assembly 14 secured to the top of each stile, thereby balancing the sash. If desired a screen may be used which is designated generally by the numeral 15.

The construction and manner of supporting the double pulleys is substantially as t'ollows, being illustrated particularly in Figs. 2 and 3:

A sheet metal frame forms a housing for the pulleys and has a flat face 29, edge walls 30, baclrwardly bent sections 31 and forwardly bent ends 32, these ends engaging the face plate 29. The housing so formed is open at the top 33 and at the bottom 34. A. pair of pulleys 35 are secured in the pulley 'lran'ie by means 01? wood screws 36 inserted through openings in the sheet metal of the frame and through the axial center of the pulleys. These screws term the journals tor rotation of the pulleys. The upper ends of the inturned edges 32 lll'tVC. u out out section 37 all wing the sash chain 38 to pass freely up one side of the frame and across the top and down the other side.

The end 33 of the pulley is closed by a flange 39 which is formed by bending the integral part of the face plate 29 over the top of the casing as shown in Fig. 5 and the bottom 34: is closed by bending the flange 40 on the lower part of the back forming a closure leaving the open corners 11 through which the sash chain 38 can pass. lhe faces 29 and 31 have alined apertures 42 so that the wood screws 36 may pass through same, these functioning to form journals for the individual pulleys as well as securing the pulley to a frame or the like. It is in ellect The outer sash 12 is slid-able on this new:

It will be noted that in the assembly of.

the sash in the window frame the center head 9 engages the lower edge of the pulley frame or housing and the center bead 10 engages the face 29 of the pulley housing, this construction being illustrated in Fi gs. l and 4-. "lherefore, although the pulley housing is'constructed of very light material and supported byc-omparatively small screws, it is so secured in place by the stops that a heavy weight may be hung therefrom, thereby allowing ahanging of a heavy balanced sash.

I utilize a hook 13 on the end of the sash chain, this hook being formed by awire hav-' ing a loop 4:4: therein and oppositely bent hooked ends 45, these latter being curled around a wood screw 46 or the like.

From the'above description it will be seen that I have devised a simple type of double pulley in which the casing or housing for the individual pulleys may be formed of light material and is partly held in position by the beads of the sash. 'Boththe vertical bead at the side of the frame and the horizontal head at the top, thus positioning the pulleys so that they are centrally positioned in reference to the balanced sash.

This pplication'is a division-of my application Serial No. 82,201 for window sash audscreens filed January 19, 1926,

The cut-out section 37 of the partition is substantially only large enough to allow passage of the chain so that there may be a cer tain rubbing action of the chain on the up per part of the partition. control the motion of-the sash if one sash should be considerably heavier than the other.

Various changes may be made in the principles of my invention without departing from the spirit thereof as set forth in the description, drawings and claims.

lVhat I claimis:

1. A vpulley for balanced. window'sash having a casing formed of a single sheet of sheet metal having the front and back flat, the side edges closed, the ends of the metal This tends to being bent inwardly at the center of the casin and extending from one wall to the other forming a center partition, there being a cut out section to allow'passage. of a sash chain at the top of the casing, a flange extending from one side of the casing to the other at the top, forming a closure, a flange extending from one side of the casing to the other at the bottom forming a' closurewith corner openings for a sash chain, the front and the back walls of the casing having alined apertures, a pair of pulleys in the casing on opposite sides of the center partition, and screws extending through the alined openings and forming journals for the pulleys.

2. A pulley for use in windows or the like housing on each side of the central brace.

0. A pulley for usein windows or the like formed of a strip of sheet metal having a flat face, oppositely positioned side edges formed by bending the strip, the back being parallel to the front, the two free ends of the strip being bent inwardly and extending centrally across the inside of the housing from the hack forming a partition, the edges of the ends being positioned to abut against the face. screws extending through the face and the back of the housing and having pulley rollers journaled thereon.

a. A pulley for balanced window sash having sheet metal casing, the casing having opposite fiat sides with closed vertical edges, the ends of the sheet metal contacting and being bent inwardly centrally forming a partition from one face to the other with a section cut out-at the top for the passage of a sash chain, and a flange folded over the top of the casing, the front and the back of the casing having alined openings adapted to receive wood screws and pulleys to journal on said screws.

in testimony whereof I have signed my name to this specification.

ABRAHAll l W. eoLnMAN;

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