US2761173A

US2761173A - Device for disconnecting sash balance cables

Info

Publication number: US2761173A
Application number: US323466A
Authority: US
Inventors: Dawson J Dinsmore
Original assignee: Individual
Current assignee: Individual
Priority date: 1952-12-01
Filing date: 1952-12-01
Publication date: 1956-09-04
Anticipated expiration: 1973-09-04

Description

P 4, 1955 D. J. DINSMORE 2,761,173

DEVICE FOR DISCONNECTING SASH BALANCE CABLES Filed Dec. 1, 1.952 2 Shets-Sheet l Sept. 4, 1956 D. J. DINSMORE 2,761,173

DEVICE FOR DISCONNECTING SASH' BALANCE CABLES Filed Dec. 1,- 1952 2 Sheets-Sheet 2 INVENTOR. flan Jan J Oinsmara errwsy United States Patent 2,761,173 DEVICE FOR DISCONNECTING SASH BALANCE CABLES Dawson J. Dinsmore, Sioux Falls, S. Dak. Application December 1, 1952, Serial No. 323,466 2 Claims. (Cl. 16-206) My invention relates to a removable sash counterbalance.

An object of my invention is to provide a counterbalancing unit which can be readily attached. to a win dow sash on either side thereof, and which includes in combination therewith certain means whereby the counter-balancing unit can be readily disengaged from the window framework at any time when it is desired to remove the window sash itself for cleaning, or for any other purpose. a

A further object of my invention is to provide an arrangement in which the window sash can be raised and lowered in an entirely natural manner, and wherein by a simple manipulation, the counter-balance will become disengaged from the framework portions merely upon a simple raising action of the window sash itself.

A further object of my inventionis to provide a simple device wherein the tension on the .countenbalancing arr-angement is quickly transferred to the disengaging arrangement upon said simple manipulatio A further object of my invention is to provide a special device which can be readily incorporated with spring-urged or any other special type of jamb, and to further provide an arrangement which can be easily attached at the four medial corners of a double-hung window construction, namely, the upper sash and the lower sash.

With these and other objects in view, consists in the construction, arrangement, and combination of the various parts of my device, whereby; the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated m the accompanying drawings, in which:

Figure 1 is a forward elevation of a window construction employing my device,

Figure 2 is an enlarged sectional view of a detail of my device and taken substantially along the lines 22 of Figure 4,

Figure 3 is a similar view to that of Figure 2 showing one of the lever members in off-set position,

Figure 4 is a view taken along the lines 44 of Figure 2, and

Figure 5 is a further detail.

My invention contemplates the provision of a device which can be used in combination with window structures principally of the type utilizing a spring tension counterbalance used with floating types of jambs or sub-frames, and to provide means wherein the sashes can be conveniently removed from the frames and washed and thence replaced, or so that the sashes can be removed for any other required reason, such as repairing or the like.

I have used the character portion of a window frame, the two vertical sides, and the character 12 the lower horizontal portion. I have further used the character 13 to indicate the upper sash and the character 14 the lower sash, with the sashes including the various furto indicate the horizontal the character 11 indicating cifically herein, that four my

invention

15 and 16, and the vertical 18 to designate the so-called floating jambs against which abut a plurality of springs indicated by the character 19, these springs thereby serving to impart resiliency against the jam b portions 18 and thereby retain a frictional engagement against the side edges of the members 17, the members 18 including a pair of channels 20 (see Figure 4), one of the channels receiving the upper sash and the other the lower sash. It will be obvious that the springs 19 are evenly distributed along the vertical length of the members 18.

To provide the counter-balancing action, I provide a casing member 21 which is secured by means of a wood screw 22 within a suitable channel 23 in the members 17, the members 21 including a transverse pin 24 passing therethrough, which receives the loop 25 of a coiled helical spring 26, the lower end of which spring is attached to a suitable cable, andwhich cable passes over a further sequence of rollers, the lower roller of which is indicated by the character 27, the cable, which is indicated by the character 28, then passing through the slotted opening at 29 in the end wall 30 of the member 21, and thence passing upwardly.

The counter-balancing member 21 having the spring 26, etc. is fully described in Patent No. 2,262,990, issued to myself and George C. Cross, and patented November 18, 1941, and it should bespecifically understood here in that the invention about to be described will also pertain to, and can be used with, any other type of spring counter-balancing arrangement, as will be obvious.

The lower end of the member 21 is secured in a similar manner by a further screw 22, and .it will be noted from Figure 1 by the dotted lines that there is provided a counter-balancing unit 21 etc. in each side sash portion 17 .of the upper and lower sashes, thereby providing means for disengaging any of the side members 17 from their receiving channels, and it being realized that although only one counter-balancing unit is described specan be used as shown.

The end wall 30 of the member 21 is recessed slightly within the edge of the member 17, and received in the rectangular opening 31 of the floating member 18 is a further substantially rectangular dished member 32 hav- 1 ing the extending lips ,33 for securing the member 132,

and extending from the base portion 34 of the member 32 is the upwardly struck inclined lip 35.

Normally receiving the lip 35 is the opening 36 which is provided at the upper end of a lever member 37, the lever member 37 including the pair of portions 38, the lower ends of which portions 38 are freely pivoted on the transverse pin 39. A further lever member indicated generally by the character 40 includes the transverse strap portion 41 extending into the side portions 42, which side portions are normally frictionally engaged with the side portions 38, the lower terminals of the portions 42 also being pivoted on the pin 39.

Also freely journalled on the pin 39 is a member 43 which extends into the integral portion 44 to which is suitably secured as at 45 the upper terminal of the cable 28.

In the upper corner of the sash member I provide a recessed portion 46 in which is attached by means of the screw 47 the member 48 having the angularly inclined lip 49, the lip 49 being tapered as shown in Figure 5.

The arrangement operates as follows. Normally, when the

lever members

37 and 40 are frictionally engaged as shown in Figure 2, the tension will be applied onto the cable 28 at all times, and the counter-balancing feature will thereby be present during the raising and lowering of the sash.

However, when it is desired to remove any one of the cable and a window frame in which said sash operates windows, each of the lever members 40 at either side of the window is swung outwardly to the approximate position shown in Figure 3. The sash is then raised in the direction of the arrow 50, whereupon the angularly in clined lip/59 will engage beneath the transverse portion 41 of the lever 40 (see dotted lines, Figure 3) and whereupon continued'movement of the window in the same direction Will then also cause the lever member 3'7 to pivot in the direction of the arrow 51 due to the fact that the lower edge 52 of the opening 36 will abut against the inclined lip 35, so that as a result, the lever member 37 is disengaged from the lip 35, the tension of the cable 28 thence being transferred to the levers 40 at both sides of the sash. The window is then thrust laterally in the direction of the arrow 53 as shown in Figure 1, or against the floating jamb members 18, whereupon the opposite side edge 17 of the window can be removed from its channel, and the entire sash easily removed, since the latching lever members will of course become completely disengaged from the lips 35.

It will thus be noted that the device automatically transfers the attachment of the cable and the tension thereof from the side frame of the window to the sash itself, thereby accomplishing the desired result.

When re-inscrting the sashes, the openings 36 are engaged with the lips 35 (after one side 17 is first thrust inwardly against its corresponding jarnb member and the other side 17 then inserted) and the lower sash, for instance, is then thrustdownwardly to its normal position, and the lever 40 is then frictionally engaged with the lever 37 by virtue of the

side members

38 and 42, whereupon the sash is then in its normal operating condition again.

It should be specifically understood that other types of counter-balancing units could be employed with my invention, it being understood also that modifications in the unit for transferring the cable tension could also be made without, however, departing from the essential spirit of my invention.

It will now be seen that I have provided the various advantages set forth in the objects of my invention with various other advantages being readily apparent.

Some changes may be made in the construction and arrangement of the parts of my invention without departing from the real spirit and purpose of my invention, and it is my intention to cover by my claims any modified forms of structure or use of mechanical equivalents which may be reasonably included within their scope.

Iclaim as my invention:

1. A connecting device for a window sash balance comprising a lever member, a further lever member, a pivot pin, said lever members being pivoted about the said pivot pin, said lever members being normally frictionally engaged during normal movement of said sash, said lever members being attached to said cable by means of said pivot pin, said further lever member being adapted to attach said cable to said frame, said lever member being adapted to attach said cable to said sash, raising action of said sash engaging said lever member when said lever member is pivoted away from said further lever member, said sash including a lip attached thereto, said lever member having an opening. for engaging said lip whereby said cable attachment will be transferred from a window frame to said lever member and to said sash.

2. A connecting device for a window sash balance cable and a window frame in which said sash operates comprising a lever member, a further lever member, a pivot pin, said lever members being pivoted about the said pivot pin, said lever members being normally frictionally engaged during normal movement of said sash, said levers members being attached to said cable by means of said'pivot pin, said further lever member being adapted to attach said cable to said frame, said lever member being adapted to attach said cable to said sash, raising action of said sash engaging said lever member when said lever member is pivoted away from said further lever member, said sash including a lip attached thereto, said lever member having an opening for engaging said lip whereby said cable attachment will be transferred from a window frame to said lever member and to said sash, said frame including a support member including an angularly inclined further lip, said further lever member having an opening normally receiving said further lip and being disengaged therefrom during upward movement of said sash due to the inclination of said further lip, the engagement between said support member and said further lever member being adapted to attach said cable to said frame.

References Cited in the file of this patent UNITED STATES PATENTS 656,320 Fisher Aug. 21, 1900 979,014 Lippincott Dec. 20, 1910 1,443,571 Gardner et al. Jan. 30, 1923 2,203,427 Dautrick June 4, 1940 2,262,990 Cross et a1. Nov. 18, 1941 2,279,600 Tappan Apr. 14, 1942