US2595595A

US2595595A - Window construction

Info

Publication number: US2595595A
Authority: US
Inventors: Harry M Mckay
Original assignee: Individual
Current assignee: Individual
Priority date: 1949-04-18
Filing date: 1949-04-18
Publication date: 1952-05-06
Anticipated expiration: 1969-05-06

Description

y 1952 H. M. MOKAY 2,595,595

wmnow CONSTRUCTION Filed Abril 18; 1949 HARRY M. MC KAY Zhwentor Gttorneg mounted in a frame.

Patented May 6, 1952 UNITED STATES PATENT OFFICE 2,595,595 WINDOW CONSTRUCTION Harry M. McKay, Winfield, Kans. Application April 18, 1949, Serial No. 88,100

2 Cla'nns.

This invention relates to a new and useful construction in which a window sash is slidably As is well known, it is desirable for the sash to slide easily in its frame to facilitate the opening and closing of the window. It is also necessary that some means be provided for maintaining the sash in whatever position of elevation it may be placed. This is commonly done at present by attaching an end of a sash cord to one edge of the sash, running the cord over a pulley mounted near the upper end of the window frame, and attaching the other end of the sash cord to a weight capable of balancing the weight of the sash, the weight being enclosed in a casing built into the side of the frame. This construction involves considerable labor time and is therefore relatively expensive.

It is an 'object of this invention to provide a sash which fits'a standard window frame, which employs friction to maintain it at any desired position of elevation, and which therefore eliminates the necessity of using the conventional sash cords and weights. Naturally the construction also eliminates the labor and material ordinarily required to provide a weight or balance casing at the sides of the window frame to accommodate the counterbalancing weights.

"It is another object to provide a sash which may be easily and quickly installed in or removed from a standard window frame after the frame has been completed, without having to remove or replace either the blind stop, the parting stop, or the interior molding of the frame.

It is' still another object of the invention to provide a sash which is so constructed as to compensate for the normal expansion and contraction in overall width due to outside weather conditions. thus eliminating sticking of the sash in its frame due to an extreme increase in friction against the jambs of the frame.

Another important object of the invention is to provide an attachment capable of converting any conventional wooden sash into a sash of the type mentioned above, so that it can be replaced in its original frame without the necessity of modifying the frame in any way, and without the necessity of using the balancing weights with which the sash was originally provided.

Another object is to provide a sash having the characteristics mentioned above, and which is also capable of being installed with or without weather stripping.

Generally the invention comprises an elongated hollow trough, preferably of thin sheet metal, of such size and shape as to telescopically 2 receive and fit over one side edge of a window sash after a portion of its extreme side edge has been removed. The trough then fits into the channel of the window frame, and the trough is pressed outwardly against the jamb of the frame by means of springs bearing against the sash proper and against the inside surface of the trough, the friction created by the spring pressure being ample to maintain the sash in any position of vertical adjustment in its frame.

The details of construction of a preferred em-: bodiment of the invention, together with other objects attending its production, will be more clearly understood when the following description is read in connection with the accompanying drawings, in which:

Fig. 1 is a perspective view of a sash embodying one form of the invention;

Fig. 2 is a fragmentary sectional view taken vertically through the right hand side of the sash of Fig. 1;

Fig. 3 is an enlarged sectional view taken along the line 3-3 of Fig. 2; and

Fig. 4 is a fragmentary horizontal sectional view through one vertical side of a complete window showing details of construction and installation of sashes embodying the invention in a different form.

Referring to that form of the invention illustrated in Figs. 1-3 inclusive, the numeral lll designates a window sash as a whole, made up of parallel side members i l and I2, and parallel top and bottom members l3 and I4, all connected together at their ends to form a. frame for receiving and holding a pane IS. The side member I2 is preferably somewhat narrower than the other members, and is adapted to fit snugly into a sheet metal trough permitting telescopic movement of said trough with relation to the sash. The trough is designated as a whole by the numeral I6, and is made up of two parallel sides I1 and i8, two parallel ends I9 and 20, and an integral bottom 2 I.

Interiorly the trough it carries a plurality of metal guides 22. These guides preferably have a substantially cylindrical body 23, an enlarged flange type head 24 which is welded or otherwise rigidly secured to the inner surface of the bottom 2|, and a spring receiving reduced end 25. Each guide has a small central bore to slidably fit the shank of a screw 26, and a connecting enlarged bore 21 to receive and permit slidable movement of the head of the screw. The

which are aligned with the respective bores 21 to permit insertion of the screw from the outside of the trough.

The sash side member [2 is provided with a plurality of properly spaced drilled blind holes 29, one for snugly but slidably receiving a respective one of the guides 22.

In installing a trough, such as described, on each window sash a compression spring 30 is first inserted into each blind hole 29. The guides are then inserted into these holes and the walls of the trough simultaneously slip over the side member of the sash. The screws 26 are then driven into side member of the sash, as shown in Figs. 2 and 3, with the springs 30 slightly compressed. For appearance sake only the distance between the trough bottom 2| and the inner edge of the side member 12 should be approximately the same as the distance between the corresponding outer and inner edges of the side member I I, when the sash is installed in a window frame.

Installation is accomplished by first inserting the trough into the vertical slide channel of a window frame with the bottom of the trough in contact with the jamb 3| of the window, as shown in Fig. 4. The entire sash is then forced toward the jamb 3|, compressing the springs 30 a sulficient distance to allow the other side member ll of the sash to clear its vertical stop 32 at the other side of the window frame. The sash is then released to the action of springs 30, and the side member ll enters its complemental vertical slide channel at the other side of the window frame. The springs 30 are of such length, and have such compressibility characteristics that the pressure of the trough bottom 2| against the jamb 3| is not great, but is ample to create suflicient friction between these two members to maintain the sash in any position of elevation to which it is manually moved. Thus weights for counterbalancing the weight of the sash are completelv eliminated.

It will be noted that the screws 26 are of such length that their heads clear the adjacent shoulders of the blind holes 29 when the sash is installed in a window frame. This spacing permits free action of the springs 30, and suificient movement of the side member l2 with relation to the trough to compensate for overall contraction or expansion in the width of the sash as a. whole, due to changing temperature or moisture conditions.

The embodiment of the invention illustrated in Fig. 4 differs from the embodiment just described in one respect only. The

adjacent side walls

33 and 34 of each of the troughs l6 have reversely turned

flanges

35 and 36, respectively, lying in planes substantiallv parallel to the

side walls

33 and 34 proper, and spaced therefrom a suificient distance to snugly but slidably receive flanges 31 and 3B which are formed as an integral part of a formed metal parting stop, designated as a whole by the numeral 39. This parting stop 39 is substantially w-shaped in cross section and extends from top to bottom of the window frame. It is anchored to the jamb 3| by a plurality of vertically spaced screws 49. The interlocking oi the

flanges

35 and 36 with the

flanges

31 and 38 form a weathertight joint between the sash and 4 its frame-a joint which permits free sliding of the sash.

Having described the invention with sufficient clarity to enable those familiar with the art to construct and use it, I claim:

1. A friction type sash balance and variable lateral extension for a window sash comprising a trough having parallel ends, parallel sides and a bottom, and of a size to complementally and telescopically receive and enclose one side edge of the sash; a plurality of longitudinally spaced axially bored and counter bored elongated guides projecting inwardly from and rigidly secured to the bottom of said trough perpendicular thereto, the counter bores being located adjacent said bottom; holes in said bottom aligned with said counterbores; cooperating seats in the side edge of said sash for complementally and slidably receiving said guides; compression coil springs housed in said seats and bearing outwardly against the inner ends of said guides; and screws passing axially through the guides, through the springs and anchored in the side edge of said sash, the heads of said screws being of larger diameter than the smaller bores in said guides, and seated in the counter bores thereof to limit outward spring pressed movement of said guides and consequently of said trough, the relative depth of the seats in said sash being such that the overall width of the sash, when the trough is fully telescoped over said one side edge, is less than the width of the fixed window frame in which the sash is adapted to be slidably mounted, whereby the sash can be easily installed in and removed from the window frame.

2. A friction type sash balance and variable lateral extension for a window sash comprising: a trough having parallel ends, parallel sides and a bottom, and of a size to complementally and telescopically receive and enclose one side edge of the sash; a plurality of longitudinally spaced guide receiving slideways cut into said one side edge of the sash at right angles thereto; similarly spaced guides each having an end secured to the inner surface of the bottom of said trough, and adapted to be received into and guided by said slideways; a spring in each slidewaybearing against the adjacent end of each guide to urge the guides and the attached trough outward with relation to the sash; and means fixed to the sash and slidably connected to each guide to limit the outward movement thereof with relation to its respective slideway.

HARRY M. McKAY.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 258,898 Davis June 6, 1882 452,098 Collins May 12, 1891 525,260 Clark Aug. 28, 1894 689,769 Way Dec. 24, 1901 1,308,625 Conover July 1, 1919 1,615,580 Hamel Jan. 25, 1927 1,798,187 Brouillette Mar. 31, 1931 2,315,200 Guillaume Mar. 30, 1943