US2260013A - Window sash operating mechanism - Google Patents

Description

Cd. 21, 1941. v ELVERS 2,260,013

WINDOW SASH OPERATING MECHANISM Filed March 4, 1940 2 Sheets-Sheet 1 Oct. 21, 1941. R. E. ELVERS WINDOW- SASH OPERATING MECHANISM Filed March 4, 1940 2 Sheets-Sheet 2 Z'NvE/vTo/e, JZoy E'EL VEES I l I I I I I I l I I l. A

n A H H H H W H H H H H H H H H H H Patenteci Oct. 21, 1941 WINDOW SASH OPERATING MECHANISM Roy E. Elvers, Los Angeles, Calif, assignor of onefourth to John C. Morgan, Los Angeles, Calif.

Application March 4, 1940, Serial No. 322,090

3 Claims.

My invention relates to a window sash operating mechanism and has for its principal objects, to generally improve upon and simplify the construction of the existing forms of similar structures and to provide a window sash operating mechanism that is relatively simple in construction and capable of being easily and conveniently manipulated so as to raise and lower window sash with minimum effort on the part of the operator.

A further object of my invention is to provide a window sash operating mechanism wherein the sash counterbalancing weights on one side of the window are suspended from a vertically movable pulley-carrying frame that forms a part of the mechanism.

A further object of my invention is to provide in a window sash operating mechanism a relatively simple and improved form of pulley or sheave-carrying frame, the same being constructed so that a part thereof may be conveniently removed in order to permit insertion and removal of the sheave or pulley.

With the foregoing and other objects in view, my invention consists in certain novel features of construction and arrangement of parts that will be hereinafter more fully described and claimed and illustrated in the accompanying drawings in which:

Fig. 1 is an elevational view of a window equipped with my improved window sash operatingmechanism and showing the jambs and the lintel in vertical section.

Fig. 2 is a vertical section taken on the line 2-2 of Fig. 1.

Fig. 3 is a diagrammatic perspective view and showing my improved operating means associated with the upper and lower sash of a window.

Fig. 4 is a detail section taken on the line 4-4 of Fig. 2.

Fig. 5 is a vertical section similar to Fig. 2 and showing a modified form of the sash operating mechanism.

Fig. 6 is a vertical section taken on the line n 6--a of Fig. 5.

Fig. 7 is an elevational view with parts broken away and in section of a pulley-carrying frame utilized in my improved apparatus.

Fig. 8 is an edge view of the pulley-carrying frame illustrated in Fig. 7 and with the lower portion thereof in vertical section.

Fig. 9 is an elevational view of a modified form of the pulley-carrying frame.

Fig. 10 is an edge view of th form of frame illustrated in Fig. 9 with the upper portion thereof in vertical section.

Referring by numerals to .the accompanying drawings and particularly to the form of operating mechanism illustrated inFigs. 1 to 4 inclusive, l0, l0 designate the jambs of a window frame, II the lintel, l2 the sill, IS the frame of the lower sash and 14 the frame of the upper sash. I

Behind the jambs Hi, narrow vertically disposed. pockets or chambers i5 are provided for the accommodation of the weights that counterbalance the weight of .thesash and for associated parts of the. operating mechanism.

Journaled in suitable bearings it that are mounted on the frame construction beneath the sill I2 and preferably below the left hand one of the pockets I5 is a horizontally disposed shaft I1 and mounted on the inner end thereof is a crank handle I8 and a small disc l9 that is provided on its periphery with a plurality of angularly disposed faces.

Pivoted on the window frame beneath the sill l2 adjacent the inner one of the bearings I6 is a latch provided in its free end with a notch 2| having angular faces that are adapted to engage the corresponding angular faces on the upper portion of the disc I9. Thus, when-latch 2i! is swung into position so that the notch 2| receives the upper portion of the disc IS the shaft I1 is latched against rotation (see Fig. 4).

Mounted on shaft I! in the lower portion of the pocket I5 is a sprocket wheel 22 and journaled for rotation in housings 23 that are fixed within the lower portion of the window frame structure beneath sill I2 are pulleys 24. The housings 23 are disposed so that the pulleys are positioned just above and on opposite sides of the sprocket wheel 22.

Journaled for rotation in suitable housings 25 that are mounted on top of lintel ll above the left hand pocket l5 are spaced pulleys 26 and a pulley 21 is journaled in a bearing 28 immediately adjacent and between the housings 25.

The axis for the pulleys 26 occupy the same vertical plane with the axis for the pulleys 24 and likewise the axes of sprocket wheel 22 and pulley 21 occupy the same vertical plane.

A frame that is arranged for vertical movement in the left hand one of the pockets l5 includes a turnbuckle 29, in the ends of which are seated the inner ends of short threaded rods 30 and the outer ends of these rods are seated respectively in blocks 3| that are removably positioned between the side walls 32 or pulley housings illustrated in detail in Figs. 7 and 8. The side portions of each pair of side walls 32 are connected by integral cross bars 33 and formed integral with the upper ends of the side walls of the upper one of the pulley housings and with the lower ends of the side walls of the lower one of the pulley housings are eyes 34.

Journaled for rotation upon and between the side walls 32 of each housing is a pulley 35. The block 3| that is removably positioned between the lower portions of the side walls 32 of the upper one of the pulley housings and which is secured to said side walls by means of screws 36 is provided on its ends with oppositely disposed arms 31 which provide supports for counterbalancing sash weights 38. The blocks 3| are made readily removable from the pulley housings in order that the pulleys 35 may be readily inserted within and removed from said housings.

Passing beneath'the' pulley 35 in the upper one of the housings 32 is a flexible member 39, preferably a chain, the same extending upwardly through apertures formed in the lintel I thence over the pulleys 26 and thence downwardly through apertures in the lintel. One end of this chain is suitably connected to the upper left hand corner of the upper sash and the other end of the chain is likewise connected to the upper left hand corner of the lower sash.

Connected to the eye 34 on the upper end of the upper one of the pulley housings 32 is one end of a flexible member 40, preferably a chain, the same extending upwardly through an opening in the lintel thence over pulley 21, thence downwardly and the lower end of this downwardly extending portion is connected to the upper end of a retractile spring 4| within the pocket I 5.

Connected to the lower end of this spring by means of aturnbuckle 42 is one end of a sprocket chain 43 that passes downwardly, thencebeneath sprocket wheel 22, thence upwardly and the upper end of the upwardly extending portion is connected to the eye 34 at the lower end of the lower pulley housing 32.

Suitably secured to the upper right hand corners of the frames of the upper and lower sash are flexible members 44 that passupwardly adjacent the right hand jamb I0, thence through openings that are formed in the lintel thence over pulleys 45 that are mounted for operation on top of the lintel, thence downwardly in a pocket 46 that is formed in the building structure adjacent the right hand one of the jambs Ill and secured to the lower ends of those portions of the flexible members in said pocket are counterbalancing weights 41. The weight that is carried by the flexible member that is connected to the upper sash is slightly heavier, for instance, approximately two pounds, than the weight that is connected to the lower sash and which arrangement is desirable in that it tends to normally maintain both sash in full closed position even though the sash are not locked in such closed position.

Passing-over the pulley carried by the lower one of the pulley housings 32 is a flexible member 48, for instance, a chain or cable, the same extending downwardly from the lower pulley through the lower portion of pocket |5 and said member passes beneath the pulleys 24, thence upwardly through an opening formed in sill |2 and one end of said flexible member is secured to the lower left hand corner of the lower sash and the other end of said member is secured to the lower left hand corner of the upper sash.

In Fig. 3 the upper and lower sash, the counterbalancing weights and the connections between said sash and weights are shown diagrammatically.

In the operation of this form of sash operating mechanism and assuming that both sash are in closed position and it is desired to raise the lower sash, crank I8 is engaged and manipulated to rotate shaft so as to pull that portion of the chain 43 that is connected to the lower one of the pulley housings 32, downwardly. Such action draws threaded rod 30, together with the counterbalancing weights 38 and the upper one of the pulley housings 32, downwardly, thereby increasing the distance from the upper one of the pulley housings 32 and the pulleys 36 over which pass the flexible members 39.

As the upper end of the upper sash bears against the lintel I, said upper sash can not move upwardly and, therefore, that portion of the flexible member between the upper one of the pulley housings 32 and the end of said flexible member that is connected to the lower sash will be drawn downwardly and, consequently, exerting upward pull on said lower sash to raise the same from the window sill.

Obviously, such movement :permits the flexible member 44 that is connected to the upper right hand corner of the lower sash to pass over its pulleys 45 and the weight 41 that is connected to said flexible member to move downward in the pocket 46. v

To latch the lower sash in its elevated position, the arm 23 is swung into position so that its notch 2| engages the angular faces on disc I9 that is carried by shaft I1 and to further lock said lower sash, a conventional sash lock L, preferably of the type comprising a short arm having an eccentric head that is pivoted on the inner face of the left hand stile of the lower sash frame, may be manipulated so as to clamp the adjacent window stop (see Fig. 1).

To close the lower sash, it is only necessary to reversely rotate shaft I! from the direction in which it was rotated to raise said lower sash.

To lower the upper sash, the shaft I1 is by means of crank handle l5 rotated so as to actuate flexible member 43 and elevate that portion thereof that is connected to the pulley housings 32. As the pulleys carried by the pulley housings 32 are thus elevated, that portion of the flexible member 39 that is connected to the upper right hand corner of the upper sash will be actuated or paid out so as to permit the upper sash to move downward and that portion of flexible member 48 that passes over the pulley carried by the lower one of the pulley housings 32, beneath the pulleys 24, andwhich is connected to the lower left hand corner of the upper sash will be actuated so as to pull said upper sash downward and which movement will not affect the lower sash due to the fact that the lower end thereof rests on sill l2.

In the event that it is desired to partially lower the upper sash after the lower sash has been partially raised, shaft I1 is rotated by means of crank handle |8 so as to actuate the various connections to lower the upper sash, but in so doing the lower sash must be held against movement either by pressure of the hand or by manipulation of the latch L to latching position.

In the modified construction illustrated in Figs. 5 and 6, the ends of a flexible member 49, either a chain or cable, are secured to the stiles of the upper and lower sash, preferably on the right hand sides thereof, and said flexible member passes over pulleys 59 that are seated in the right hand jamb of the window frame. From said pulleys the parallel portions of member 49 pass downwardly through a pocket 52 formed in the building structure adjacent the right hand jamb of the window frame and said member passes beneath a pulley 53 that is carried by a pulley housing 54.

Projecting from opposite sides of the lower portion of the housing 54 are arms 55 from which are suspended counterbalancing weights 56. Depending from the pulley housing 54 is a rod 51 and adjustably mounted on the lower end thereof is an eye 58 to which is connected one end of a flexible member 59, such as a chain or cable. This flexible member passes beneath pulleys 60 that are journaled in suitable bearings in the lower portion of pocket 52 above the window sill BI and from said pulleys member 59 extends upwardly in front of the upright right hand portion of the window frame and at the top of said upright member, said flexible member 59 passes over pulleys 62 that are journaled for operation in the upper portion of the window frame just below the lintel. From the inner one of said pulleys 62, member 59 passes downwardly through pocket 52 and the lower end thereof is connected to an eye 63 that is carried by the upper end of the pulley housing 54.

Carried by that portion of the flexible member 59 that is disposed in front of the window casing between the pulleys 60 and 62 is a handle 64 that is adapted to be grasped by the hand for imparting movement to flexible member 59 when the window sash are raised and lowered.

Positioned on the window casing just above the pulleys 69 is a conventional latching device 65, preferably formed of resilient metal, through which the flexible member 59 passes and which latching device is adapted to grip and hold said flexible member against movement in either direction.

In this form of sash operating mechanism, both sash are provided with counterbalancing means as illustrated at the right hand of Figure 1 on the side opposite the sash actuating mechanism just described and which counterbalancing means occupy a pocket in the building structure identical with pocket 46.

In this form of apparatus, the handle 64 carried by flexible member 59 is engaged and moved upward to raise the lower sash from its normal closed position and as such action takes place, the pulley housing 54 will be drawn downward, thereby pulling on that end of the flexible member 49 that is connected to the lower sash without actuating the end of said flexible member that is connected to the upper sash, the upper end of which bears against the lintel and thus, the lower sash is raised to the desired degree.

'I'o lower the upper sash, handle 64 is engaged and moved downward and which movement through flexible member 59 elevates pulley housing 54, thereby paying out the end portion of said member 49 that is connected to the upper sash and permitting the same to lower without affecting the lower sash, the lower end of which rests on the sill.

In Figs. 9 and I have illustrated the pulley housing 33 provided at its lower end with an eye 34a and at its upper end with a removable block He: that receives the end portion of a threaded rod, such as 39 or 51.

Thus it will be seen that I have provided a window sash operating mechanism that is relatively simple in construction, inexpensive of manufacture and very effective in performing the functions for which it is intended.

It will be understood that minor changes in the size, form and construction of the various parts of my improved window sash operating mechanism, may be made and substituted for those herein shown and described, without departing from the spirit of my invention, the scope of which is set forth in the appended claims.

I claim as my invention:

1. The combination with a window frame and the upper and lower sash arranged for operation therein, of an endless flexible member arranged for operation in the building structure behind one of the jambs of the window frame, a pair of rolling supports for said endless flexible member, a longitudinally adjustable frame forming a part of said endless flexible member, counterbalancing weights carried by said adjustable frame, pulleys carried by the ends of said adjustable frame, a flexible member passing beneath the upper one of said pulleys, rolling supports on the upper portion of said window frame for said flexible member, the ends of said flexible member being secured to the upper portions of the upper and lower sash, a flexible member passing over the lower one of the pulleys carried by said longitudinally adjustable frame, rolling supports arranged in the lower portion of the window frame for said last mentioned flexible member and the ends of which last mentioned flexible member are connected to the lower portions of the window sash.

2. In a window sash operating mechanism the combination as set forth in claim 1, with counterbalancing weights arranged for operation in the window frame on the opposite side thereof from said endless flexible member and the pulley carrying frame carried thereby, which last mentioned counterbalancing weights are operatively connected to the upper and lower sash and the weight that is connected to the upper sash being heavier than the weight that is connected to the lower sash.

3. In a window sash operating mechanism the combination with a window frame and upper and lower sash arranged for operation therein and there being a vertically disposed pocket formed in the building structure behind one of the jambs of the window frame, of rolling supports arranged for operation adjacent the upper and lower ends of said pocket, an endless flexible member mounted for operation on. said rolling supports, said endless flexible member including a pair of adjustably connected rods, pulley carrying housings adjustably mounted on said rods, flexible members mounted for operation on the pulleys carried by said housings, which flexible members are connected respectively to the upper portions of the upper and lower sash and the lower portions of said upper and lower sash and counterbalancing weights carried by the upper one of said pair of adjustably connected rods.

ROY E. ELVERS.

Images