US3026581A

US3026581A - Window sash mounting

Info

Publication number: US3026581A
Application number: US828666A
Authority: US
Inventors: Paul N Collin; Arnold M Cook
Original assignee: ALLMETAL WEATHERSTRIP CO
Current assignee: ALLMETAL WEATHERSTRIP CO
Priority date: 1959-07-21
Filing date: 1959-07-21
Publication date: 1962-03-27
Anticipated expiration: 1979-03-27

Description

P N coLLlN ETAL wINDow sAsH MOUNTING Flled July 21, 1959 March 27, 1962 United States Patent O 3,026,531 WNDGW SASH MUN'I'ING Paul N. Collin, Golf, and Arnold M. Cook, Evanston, Ill.,

assignors to Allmetal Weatherstrip Company, a corporation of Illinois Filed duly 21, 1959, Ser. No. 828,666 3 Claims. (Cl. Ztl- 52) This invention relates generally to window constructions and is more particularly directed to an improved form of window sash mounting for slidable double-hung window sashes.

Modern window construction makes wide use of metal window sash guides, which are prefabricated and which employ coil springs as counterbalances for the sliding sashes. These metal sash guides are particularly advantageous in that they are easy to install, provide for easy sliding movement of the window sashes relative to the frame, and afford excellent weatherstripping of the window construction. Many forms of metal window sash guides have been designed and used to advantage, but generally they comprise a channel-shaped member or portion which is secured in a recess provided at opposite sides of the wood frame structure surrounding the window, and include a vertically extending sash guide portion, which is adapted to project into a complementary longitudinal groove in the side edge of the window sash or otherwise guidedly engage the sash so as to afford relative sliding movement of the latter. The metal sash guide structure may include a parting stop intermediate the two elongated guide elements, or the latter might be relied upon for maintaining the window sashes in laterally spaced-apart position. The coil springs used to counterbalance each of the window sashes are disposed along opposite edges of the sash and may -be housed within the elongated rib or projection which provides the guide for the window sash. Generally, this spring housing and guide section extends the full length of the window sash mounting, but it may also be made -to extend only approximately half the height of the window sash mounting and thereby reduce the cost of the construction.

The present invention has for its primary object the provision of a novel window sash mounting, which includes a stop means disposed at the end of the sash guide structure so as to limit the sliding movement of the window sash in the frame. A further object or" the invention is to provide a window sash stop means which is readily positionable on a metal window sash guide structure at either the upper or lower end thereof, or at both, so as to prevent movement o'f the vertically slidable window sash completely to the opposite end of the guide track provided lby the window sash mounting. Other objects and advantages will be apparent from the following description of a selected embodiment of the invention, which is illustrated in the accompanying drawings, wherein:

FIGURE l is a side elevational view of a window frame and sash guide structure, with portions broken away and in section to more clearly illustrate structural details;

FIGURE 2 is a sectional View, taken along the line Z-2 in FIGURE l;

FIGURE 3 is a fragmentary View of the window construction as viewed from the left in FIGURE 1;

FIGURE 4 is an enlarged sectional View, taken along the lines 4-4 of FIGURE l; and

FIGURE 5 is lan enlarged perspective of the stop means shown in FIGURE l.

The embodiment chosen to illustrate the present invention includes, generally, a pair of vertically movable, double-hung window sashes and 12 which are supported at opposite sides thereof by metal sash guide and weatherstrip means 14 disposed within a wooden frame 16. The sash guide and weatherstrip structure 14 includes a channel-shaped base member 13 which extends substantially the length of the window frame, and which has secured thereto, at its upper end section, a pair of spaced-apart projecting sections Ztl and 22, which engage grooves 24 'and 26 (FIGURE 2) formed in the side edges of each of the window sashes to thereby provide guides for the vertical sliding movement of the latter. These projecting portions Ztl and 22 also serve as housings for a pair of counterbalanced springs 2S, which are suitably attached at their upper end portions and which are provided with a hanger 30 at their lower end for supporting engagement with the lower edge of the respective window sashes.

The hanger 3() comprises a straight main portion or stern 32 which has formed along one edge thereof a series of' spaced-apart pairs of

notches

34 and 36 that include alternately relatively narrow and relatively wide openings at their outer edges. The lower portion of the stern has mounted thereon a transverse portion 38 which is generally U-shaped, with the leg members thereof being bent at right angles adjacent their free ends to thereby provide a pair of fiat bearing surfaces for engaging the lower edge of the window sash. The bight portion of this inverted, U-shaped member is slotted to loosely receive the stem 32 therethrough, and the stem includes a pin or boss 40 adjacent its lower end to position the U-shaped member for pivotal or rocking movement relative to the stern. The stem is inserted in the center of the coil spring 28 and adjustably fixed in position at the lower end thereof, with the eye portion i2 of the spring end engaging one of the relatively narrow slots 34, and the adjoining portion of the coil disposed within the adjacent relatively wider slot 36 just above said narrow slot.

The spring housing and guide sections 2.0 and 22 in the illustrated embodiment extend lengthwise slightly more than half the entire length of the window sash mounting, although as it will be seen, the length of these guide sections might be made somewhat less than half of the length of the window frame, and still provide an eiective guide means for the sashes.

It is desirable to avoid moving either of the window sashes the full extent of the sash guide structure, while still providing su'licient movement for opening and closing of the window. For example, in the case of a spring housing and guide which extends less than the length of the window frame, it is important that the upper sash be not lowered to such an extent that it will run oli of the sash guide section. lf such occurs, the sash may shift sufficiently in the mounting frame to prevent it from readily re-engaging the sash guide when the sash is moved upwardly. Then too, when the window sashes are provided with the usual locking device, which may consist of complementary locking elements 44 and 46 on the upper edge of the lower sash and on the lower section of the upper sash, respectively, it is desirable that the lower sash 12 not be moved too far upwardly and at a rate such that the locking element 44 thereon strikes the upper transverse window frame member 48. In order to prevent such incidents from occurring, there is provided a readily attachable stop element 50, which is illustrated particularly in FIGURE 5.

The stop element 50 is in the form of a metal clip having a rebent hairpin-like section 52 which is clampingly engageable with a relatively thin wall section of the 4window sash guide structure 14, so as to position the stop at either end of the guide, as shown in FIGURE 1. The stop element 50 includes a transverse ledge portion 54 and an additional leg portion 56, with the `free end of the latter being disposed to engage either the upper or lower transverse frame members of the window. In such position, the transverse ledge 54 is positioned to abut a transverse edge of the window sash and thereby llimit further movement of the sash in the direction of the adjacent transverse frame member.

ln the illustrated embodiment, the window sash guide and weatherstrip structure includes a central channelshaped section 60 which provides a parting stop between the two slidable sashes and 12, and the stop means 5t) is clamped in place on the side wall 62 of this parting stop. However, it will be understood that the stop element might also be positioned on the bottom wall 64 or one of the outer side walls 66 of the sash guide, or even on the counterbalanced spring housing and 22, and still perform its intended function.

Although the stop means may assume other forms, the illustrated embodiment is formed from a strip of spring steel, or the like, and the

leg portions

52 and 56 of the generally U-shaped stop element are ribbed for reinforcement purposes. The stop element might have

legs

52 and 56 of equal length or, in the case of use where the sill is inclined and the lower edge of the sash guide structure is Cut at an angle, the outer single leg 56 of the stop means 5) can be made longer to accommodate the incline of the sill. In case the stop element is to be secured to the bottom wall 64 of the sash guide structure, a suitable angle might be formed at the lower end of the

legs

52 and 56 of the stop to correspond with the incline of the sash guide and lower sill.

' It is seen, therefore, that there is provided herein a simple but very advantageous stop means for use in connection with metal window sash mountings. Although shown and described with respect to particular structure, it will be apparent that other modifications might be made without departing from the principles of this invention.

We claim:

1. In combination with a Window structure comprising a window frame having a pair of side members, a top member and a bottom member, a pair of window sashes vertically slidable in said frame, and a metal sash guide and weatherstrip means fixed to each of said side frame members in engagement with said sash to provide guided vertical movement of said sashes relative thereto, and a detachable stop means disposed in fixed relation to said sash guide and weatherstrip means at one end thereof in the path of movement of one of said sashes, said stop means comprising a generally U-shaped element with one leg thereof having a rebent end portion, said rebent end portion being clampingly engaged with one end portion of said metal sash guide means to thereby position the other `leg of said element in the path of said one sash with the free end of said other leg abutting one of said top and bottom members, and the bight portion of said element providing a transverse ledge for abutment by said one sash to limit the vertical sliding movement thereof within said window frame.

2. In combination with a window structure comprising a window frame having a pair of side members, a top member and a bottom member, a pair of window sashes vertically slidable in said frame, and a metal sash guide and weatherstrip means fixed to each of said side frame members in engagement with said sashes to provide guided vertical movement of said sashes relative to each other and with respect to said frame, and a pair of detachable stop means disposed in xed relation to said sash guide and weatherstrip means at opposite ends thereof with each stop means being in the path of movement of one of said sashes, each of said stop means comprising a generally U-shaped element with one leg thereof having a rebent end portion, said rebent end portion being clampingly engaged with one end portion of said metal sash guide means to thereby position the other leg of said element in the path of one of said sashes with the free end of said other leg abutting one of said top and bottom members, and the bight portion of said element providing a transverse ledge for abutment by one of said sashes to limit the vertical sliding movement thereof within said window frame.

3. A window sash stop means for use with a metal window sash guide and weather strip adapted to be mounted in a window frame and to guide the travel of a window sash, said sash stop means comprising a generally U-shaped element including one leg having a rebent end portion adapted to slidab'ly and clampingly engage an end edge portion of the sash guide, a bight portion providing a transverse ledge for abutting engagement with the adjacent transverse member of the window sash, and a second leg extending in generally parallel relation to said one leg and being disposed to extend in spaced relation to said sash guide in the path of movement of the window sash slidably mounted in said sash guide, said second leg having a length at least as great as that of said one leg so that it is adapted to abut a transverse member of the window frame and provide support for said bight portion, said second leg including a lengthwise rib adapted for strengthening said second leg, thereby providing increased support for said bight portion.

References Cited in the tile of this patent UNITED STATES PATENTS 902,407 Humphrey Oct. 27, 1908 1,911,469 Rosenwald May 30, 1933 1,958,934 Williams May 15, 1934 2,284,436 Lundgren May 26, 1942 2,298,406 Miller Oct. 13, 1942 2,940,139 Koebel June 14, 1960