US3010163A - Sash guide member with interfitting casing - Google Patents

Description

NOV. 28, F Q G51-EN 5R SASH GUIDE MEMBER WITH INTERFITTING CASING 2 Sheets-Sheetl l Original Filed Sept. 24, 1956 85g' 2 nvm/ron. E525/@167, 052/6? 57: maf/Z9 7495 Nov. 28,

Original Filed Sept. 24, 1956 F. C. OSTEN, SR

SASI-I GUIDE MEMBER WITH INTERFITTING CASING 2 Sheets-Sheet 2 I I I I. I I I I I I I I I I I I I IN VEN TOR.

Stats This invention relates to builders hardware and, in particular, to sash balances.

The principal object is to provide an automaticallylocking sash balance wherein the sash balance is housed in a substantially tubular casing which ts into a channel portion of la sash guide and interlocks therewith so that the sash guide channel selectively receives either the sash balance as a whole, or receives only the tubular casing which, by projecting beyond the face of the sash guide into the side rail groove of the sash provides guidance for the sash without spring balancing of the weight thereof.

Other objects and advantages of the invention will become apparent during the course of the following description of the accompanying drawings, wherein:

FIGURE l is a vertical section through a removable sash Window installation equipped with the automatically-locking sash balance of the present invention, tal-'ren along the line 1 1 in FIGURE 2;

FIGURE 2 is a vertical section taken along the line 2 2 in FIGURE 1, with a portion of the sash balance casing and sash broken away to disclose the interior of the sash balance in its unlocked and balancing position;

FIGURE 3 is a horizontal section taken along the line 3 3 in FIGURE 2, showing sash balances of the present invention installed on the right-hand side and reversed sash balance casings installed as sash guide ribs on the left-hand side, in accordance with the invention;

FIGURE 4 is an enlarged fragmentary central vertical section through the lower end of the sash balance and trigger-tripping device, taken along the line 4 4 in FIGURE 5, with the sash balance tripped and unlocked;

FIGURE 5 is an enlarged fragmentary horizontal section taken along the line 5 5 in FIGURE 4;

FIGURE 6 is a View similar to the right-hand portion of FIGURE 4, but with the sash removed from the window frame and the sash balance automatically locked, according to the invention, showing the lower portion of the sash balance mainly in side elevation; and

FIGURE 7 is a vertical section taken along the line 7 7 in FIGURE 6, showing the lower portion of the sash balance substantially in front elevation.

This application is a division of my co-pending application Serial No. 611,509 tiled September 24, 1956, now Patent No. 2,903,736, issued September 15, 1959 for Automatically-Locking Sash Balance for Removable Sash Windows.

Referring to the drawings in detail, FIGURES l to 3 inclusive show a removable sash window installation, generally designated 8, according to one form of the invention, as consisting generally of a window frame 10 containing Xed and resiliently-mounted sash guides, general designated 12 and 14 respectively, which in turn contain hollow guide ribs 16 and 18 respectively, the former of which serve as casings for automatically- Patented Nov. 28,1961

locking sash balances, generally designated 20, on one side thereof engaging and balancing upper and lower sliding sashes 22 and 24 respectively.

The window frame 10 is conventional and includes the usual side members 26 interconnected by top and bottom members 28 and 30, the latter being the usual window sill. The window frame 10 is mounted in the usual opening above the horizontal stud 32 and has the usual parting rail 34 recessed into the upper member 28 between the upper and lower sashes 22 and 24 (FIGURE 1), which in turn are equipped with the usual window panes 36 and 38 respectively. Each sash 22 and 24 is provided with the usual meeting rails 40 and 42 and top and bottom rails 44 and 46 and side rails 48 interconnecting the horizontal rails 40, 42, 44 and 46.

The side rails 48 of each sash 22 or 24 are provided with longitudinal verticalA guide grooves 50 which on the right-hand side (FIGURE 3) slidably receive the elongated tubular casings 16 as guide ribs and on the lefthand side slidably receive the empty reversed tubular casings 18 as guide ribs. The side rails 48 on the righthand sides of the sashes 22 and 24 also contain recesses 52 extending inwardly from the guide grooves 50 (FIG- URES 4 and 5), which recesses 52 in turn contain sash balance trigger-tripping devices, generally designated 54.

Each trigger-tripping device 54 consists of a substantially tubular casing 56 having a face plate or mounting plate 58 drilled to receive fasteners 60 by which the device 54 is held in position. The casings 56 are of rectangular cross-section (FIGURE 5) with opposite parallel side walls 62 drilled to receive a pivot pin. 64, the front Wall 66 having an elongated slot 68 therein. Pivotally mounted upon the pivot pin 64 is a swinging dog or catch 70 in the form of an arm having an angled pointed tip 72 projecting through the slot 68. The catch 70 also has a socket 74 in which is mounted the outer end of a compression spring 76, the rearward end of which engages the rearward wall 78 of the casing 56 as an abutment (FIGURE 4). In this manner, the pointed tip 72 of the catch 70 is constantly urged outward through the slot 68 but is adapted to yield and be swung into the chamber within the casing 56 as explained below in connection with the operation of the invention.

The fixed and resiliently-mounted sash guides 12 and 14 are of similar construction, except for their dilference in mobility, hence a single description will suffice for both. Each sash guide 12 or 14 is preferably rolled from a suitable sheet metal, such as sheet aluminum and has spaced parallel edge walls 79 and a front wall 80 (FIG- URES 3 and 5) with a pair of spaced channels 82 formed therein, each of these channels 82 having bottom walls 83 and parallel guide grooves 84 formed in its opposite side walls 86. The guide grooves 84 are so positioned that they slidably receive guide ribs 88 projecting outwardly from the mid-portions of the side Walls 90 of the casings or hollow guide ribs 16 or 18 midway between their front and rear walls 92 and 94 respectively. Each front wall 92 is provided with a slot 96 running from end to end thereof, thus interrupting the otherwise tubular character of the rib or casing 16 or 18.

By reason of this construction, the tubular member 16 or 18 can be used either as a spring balance casing, as on the right-hand side of FIGURE 3, or reversed and used as a hollow guide rib, as on the left-hand side of FIGURE 3, enabling the same part to do double duty. Each of the sash guides 12 and 14 along its approximate center line is drilled and countersunk to receive fasteners 98 and 100 respectively, such as wood screws, threaded into the window frame side members 26 (FIGURE 3). The fasteners 98 are relatively short and hold the anged edges 102 of the edge walls 79 in xed abutting relationship with their respective window frame side member 26. The fasteners 108, on the other hand, are longer than the fasteners 98 so as to permit the flanged edges 102 of the edge walls 79 to be moved away from their respective window frame side members 26, being resiliently urged into such a position by helical compression springs 184 having their rearward ends seated in sockets 186 formed in the side member 26 and having their forward ends engaging the bottom walls 83 of the channels 82 of the resiliently-mounted sash guide 14. By this means, the guide ribs 18 are resiliently urged into'engagement with the guide grooves 50 in the side rails 48 on the left-hand sides of the sashes 22 and 24, the latter being in turn urged against the tubular casings 16 of the sash balances 20 which serve also as guide ribs.

The tubular casing 16 of each sash balance 20 is drilled at its upper end to receive a transverse spring anchorage pin 106 (FIGURE 2) to which is anchored the hooked upper end of an elongated helical tension spring or balancing spring 188, the hooked lower end of which is hooked through the eye 110 (FIGURES 4, 6 and 7) of a cable anchorage clip 112 having a ferrule 114 in which the reversely-bent upper end portion 116 of a short exible wire cable member 118 is firmly secured. The'lower portion of the cable 118 passes through a substantially vertical bore 120 in a sash locking plate 122 and has an enlarged head 124 seated in a socket 126 in the bottom thereof (FIGURE 4). The sash-locking plate 122 on its rearward edge is provided with a sharp transverse locking edge 128 and on its front side with a laterallyprojecting trigger portion 130 having a sash-engaging abutment surface 132 on its upper side and a rounded catch-deecting surface 134 on its lower side.

Rearwardly of the bore 120, the locking plate 122 below the sharp edge 128 is bored transversely to receive a pivot pin 136 upon which the locking plate 122 is rockably mounted (FIGURES 6 and 7). The locking plate 122 is rockably mounted in a parallel-walled notch 138 in the upper end of a reciprocatory guide block 140 reciprocably mounted in the casing 16. The opposite ends of the pivot pin 136 are seated in aligned bores 142 (FIG- URE 7) in the block 140 on opposite sides of the notch 138 in such a manner that the trigger portion 130 projects outward through the slot 96 into the path of the tip 72 of the catch 70 when the sharp edge 128 is in engagement with the rearward wall 94 of the casing 16. The pivot pin 136 is mounted slightly to the rear of the cable 118 and slightly below the level of the abutment surface 132 of the locking plate 122, the spacing of the cable connection from the pivot 136 providing a rocking lever arm upon the locking plate 122. The locking plate 122 is preferably of a tough material, such as polymeric amide synthetic plastic, known commercially as nylonf In the operation of the invention, let it be assumed that the sashes 22and 24 have been inserted in the window frame 111 and engaged with their respective guides 12 and 14 by inserting them one by one obliquely against the resilient sash guide 14 so as to push it to the left and permit the casing 16 of the sash balance 20 to enter the guide groove 54 in the side rail 48 (FIGURE 3). Let it also be assumed that the sashes 22 and` 24 are in sufliciently raised positions that their respective catches 70 are above the locking plates 122 and pulled downward (FIGURE 4) in a manner suicient to engage the abutment surface 132 of the trigger portion 13G and swing the locking plate 122 counterclockwise around its pivot pin 136 so as to withdraw the sharp edge 128 thereof from locking engagement with the rear wall 94. The catch 72 in its outward swinging is limited by the upper end of the slot 68 from projecting too far into the interior of the .4 casing 16. Under these conditions, the sash balances 20 are unlocked and the tensions of their springs 108 are applied in balancing relationship to their respective sashes 22 and 24 (FIGURES 2 and 4).

If, now, one of the sashes 22 or 24 is removed by pushing it to the left against the resiliently-mounted sash guide 14 (FIGURE 3) so as to free the right-hand guide grooves 50 from engagement with the casings 16 and permit the sash 22 or 24 to be withdrawn from the window frame 10. When this occurs, the tip 72 of the catch 78 is disengaged from its abutment surface 132 on the trigger portion 130 of the locking plate 122, permitting the spring 188 in pulling upward upon the cable 118 to rock the locking plate 122 clockwise (FIGURE 6) around its pivot pin 136, causing the sharp edge 128 thereof to engage and dig into the rear wall 94 of the casing 16, thereby locking the sash balance 20 in its extended position with the spring 198 in its tensioned condition.

When the sash 22 or 24 is again inserted in the Window frame 10 with the tip 72 of the catch 70 on a level below the trigger portion 130 of the locking plate 122, lifting of the sash 22 or 24 moves its respective triggertripping device 54 upward so that the tip 72 of the catch 70 is swung away from the locking plate 22 by being cammed against the curved lower edge 134 of the trigger portion 130 of the locking plate 122, permitting the spring 108 in pulling upward upon the cable 118 to rock the locking plate 122 clockwise (FIGURE 6) around its pivot pin 136, causing the sharp edge 128 thereof to engage and dig into the rear wall 94 of the casing 16, thereby locking the sash balance 20 in its extended position with the spring 188 in its tensioned condition.

When the sash 22 or 24 is again inserted in the window frame 10 with the tip 72 of the catch 70 on a level below the trigger portion 130 of the locking plate 122, lifting of the sash 22 or 24 moves its respective triggertripping device 54 upward so that the tip 72 of the catch 70 is swung away from the locking plate 22 by being cammed against the curved lower edge 134 of the trigger portion 130, compressing the spring 76. The latter, however, immediately causes the catch 70 to be swung in the opposite direction through the slot 68, whereupon the lowering of the sash 22 or 24 moves the tip 72 of the catch 70 downward into engagement with the abutment surface 132 of the trigger portion 138, swinging the locking plate 122 counterclockwise around its pivot pin 136 from the locked position of FIGURE 6 to the unlocked position of FIGURES 2 and 4, at the same time disengaging the sharp-edged portion 128 from its engagement with' the rear wall 94 ofthe casing 16 of the sash balance 20. The latter thereupon resumes its balancing function until it is next desired to remove the sash 22 What I claim is:

- 1. A combination sash guide and sash balance casing construction for sliding sash Windows having sash side rails with longitudinal guide grooves therein, said construction comprising an elongated sash guide member having a longitudinally-directed channel therein, an elongated hollow casing having front, rear and side walls with an elongated aperture in said front wall, said casing being matingly engageable with said channel, said casing having a depth exceeding the depth of said channel with a portion projecting therefrom into relative sliding engageability with the longitudinal guide grooves in the sash side rails, and means comprising interlitting detent portions formed in the side walls of said guide member and casing removably securing said casing in said channel.

2. A combination sash guide and sash balance casing construction for sliding sash windows having sash side rails with longitudinal guide grooves therein, said construction comprising an elongated sash guide member having a longitudinally-directed channel therein, an elongated hollow casiag having front, rear and side walls 6 with an elongated aperture in said -front wall, said casing References Cited in the file of this patent being matingly engageable wi-th said channel, said casing having a depth exceeding the depth of said channel UNITED STATES PATENTS with a portion projecting therefrom into relative sliding 724134 Smith Mar 31 1903 engageability with the longitudinal guide grooves in the 5 1909698 Madse' May' 16 1933 sash side rails, `and means comprising intertting detent 2747219 Haas May 29 1956 portions formed in the side Walls of said guide member A@iT/5:7923 Bent Jan. l 1957 and casing removably and reversibly securing said casing in said channel.

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