US3111725A

US3111725A - Window sash construction

Info

Publication number: US3111725A
Application number: US138163A
Authority: US
Inventors: Roy G Brown
Original assignee: BROWN AND GRIST Inc
Current assignee: BROWN AND GRIST Inc
Priority date: 1961-09-14
Filing date: 1961-09-14
Publication date: 1963-11-26
Anticipated expiration: 1980-11-26

Description

Nov. 26, 1963 R. G. BROWN WINDOW SASH CONSTRUCTION s Sheets-Sher. 1

Filed Sept. 14, 1961 ll #7 FIGBB I l I IN V EN TOR.

ROY 6. BROWN Oberlin, "lukg Dommlly ATTORNEYS Ndv. 26, 1963 R. a. BROWN WINDOW SASH CONSTRUCTION 3 Sheets-Sheet 2 Filed Sept. 14, 1961 7 a j a o m B \vllll W 0. IY Y m 1 M Q Q 6 m M o "a m B m 2 Y O M m a O B .6 F l 2 0W FIG 2B ATTORNEYS Nov. 26, 1963 R. G. BROWN 3,111,725

WINDOW SASH CONSTRUCTION Filed Sept. 14, 1961 3 Sheets-Sheet 5 I I l N 4} i 2* 3 FIG 6 v. Q

FIG 7 INVENTOR.

ROY G. BROWN ayobulmmnkg 400M119 ATTORNEYS United States Patent tion of Virginia Filed Sept. 14, 1961, Ser. No. 138,163 Claims. (Cl. 20-42) This invention relates to window construction and, more particularly, to a louver sash type window structure in which a plurality of sashes or vents are superimposed and interconnected for synchronous movement, the window having an inward opening sash and one or more outwardly opening sashes.

The use of louver sash type window structures has become very popular, particularly those of aluminum metal sash and frame. However, many existing structures are too complex for economical manufacture, are difiicult to install and, after installation, are subject to failures necessitating repairs and replacements. Other known structures have an unattractive appeanance owing to exposed mechanisms, while still others have omitted sash bars resulting in much weaker structures.

It is, therefore, an object of this invention to provide a window of the type described of simple construction which is easy to install and which provides easy, troublefree operation.

Another object is to provide such a window construction wherein all of the actuating mechanism and hinges are concealed when closed, thereby presenting a neat and attractive appearance.

A further object is to provide such a window construction having horizontal sash bars between the sash elements to strengthen the structure.

Yet another object is to provide such a window construction wherein the actuating mechanism utilizes a series of rods, levers and links which serve to hold all sashes in a closed-locked position when one sash is locked and, also, serve statically to support the sashes when they are open without the necessity of props, cranks or the like.

Other objects and advantages of the present invention will become apparent as the following description procecds.

To the accompils-h ment of the foregoing and related ends, the invention, then, comprises the features hereinafter fully described and particularly pointed out in the claims, the following description and the annexed drawings setting forth in detail certain illustrative embodiments of the invention, these being indicative, however, of but a few of the various ways in which the principle of the invention may be employed.

In said annexed drawings:

FIG. 1 is a perspective view of a window construction according to this invention;

FIGS. 2a and 2b represent sectional views of the upper and lower portions respectively of the window taken along line 2-2 of FIG. 1;

FIGS. 3a and 3b are views similar to FIGS. 2a and 2b illustrating the closed position of the sashes;

FIG. 4 is an enlarged section taken along line 4-4 of FIG. 3a;

FIG. 5 is an enlarged section taken along line 5-5 of FIG. 3b showing the side of the sash in phantom;

FIG. 6 is an enlarged section taken along line 5-6 of FIG. 3b showing the side of the sash in phantom; and

"ice

FIG. 7 is a partial section tflten along line 7-7 of FIG. 3b.

Referring now more particularly to the drawings, the embodiment of my invention there illustrated comprises a rectangular main frame 11 having therein an inwardly opening lower hopper sash l2 and at least one outwardly opening upper vent sash 13. As can be seen in FIG. 1, the central portion of the window contains a panel of fixed glass 14 which may be glazed either from the inside or the outside as desired. The top, bottom and sides of the frame 11 may desirably be formed of aluminum angle members having laterally extending side flanges 15 adapted to engage the outer surface of the wall in which the window is installed. The interior of the frame surrounding the lower hopper sash 12 consists of aluminum angle members it providing a neat and pleasing appearance as viewed from within the building and cancealing the sash mounting means from View. Similarly, the frame surrounding the upper vent sash includes aluminum angle members 17 which serve the same purpose.

Fixed, transversely extending sash bars .18 and 19 preferably integral with the main frame 11 serve to significantly strengthen the window construction and to frame the fixed glass portion 14 and the upper and

lower sash members

12 and 13. The upper horizontal portion of the frame 111 also has an outwardly protruding downturned lip or flange 2% which receives the upper edge of the upper vent sash to provide a weather seal when the latter is in a closed position.

ElG. 2a and 3a illustrate in section the upper vent sash in its open and closed positions respectively. As shown, the side member 21 of the sash is pivotally attached to upper toggle lever 22. The upper end of side member 21 is pivotally and slidably con ected to the side of frame 11 in generally vertical slideway 23 so that when the upper vent sash 13 is opened it will slide downwardly as well as pivot outwardly. The slideway 23 is downwardly inclined slightly in the outward direction as shown. Upper toggle lever 22 is pivotally attached to bracket 24 which is connected to the side of frame 11. The upper bolt of the latter connection 25 rests in a slotted hole to permit adjustment of the bracket laterally; such adjustment enables the bottom of upper vent sash 13 to be properly set up tight to the sash bar 18 thereby improving the seal.

An upper link 26 is pivotally connected at one end to upper toggle lever 22 and also pivotally connected at its other end to the push rod 27. When the upper vent sash 13 is in its closed position (FIG. 3a), the link 26 is in a position outwardly and downwardly inclined to the push rod for two reasons: (1) this permits camming lever action between the push rod and the upper toggle lever when the window is to be opened; and (2) provides a substantial horizontal component holding the vent sash closed when upward vertical compression is maintained in the push rod. The push rod is slidably connected to the side of frame 11, being mounted in guides 28 in its upper portion. The guides 23, as clearly shown in FIG. 4, are a pair of blocks of low-friction material (preferably nylon) connected to the frame 11 having a hole therein through which the push rod 27 passes. The upper portion of push rod 27 is provided with a long central longitudinal slot 29; a pair of adjusting screws 3% are mounted transversely to the slot and are capable of expanding the width thereof. iThus, adjust ment of the screws 3%; enables the friction between the push rod 2'7 and the guides 28 to be increased, thereby permitting a careful adjustment of the degree of opening of the vent and hopper without fear of their moving under their own weight. The lower portion of the push rod 27 is laterally offset as shown in 2b, passing through lower sash bar 19. The lower end of the push rod is connected to a block 31 of low-friction material (pref rably nylon) which slides within aluminum angle member 16. The block 31 is pivotally connected to lower toggle lever 32. A backing plate 33 is attached to the back of the block and serves to support the lastmentioned two connections. The other end of lower toggle lever 32 is connected to side member 34 of lower hopper sash l2. Hopper sash support bars 35 and 3.5 are pivotally interconnected at 3'7 with support bar 35 being connected to the side 34 of the lower hopper sash and support bar 35 being connected to the frame liner to as shown in FIG. 7; the latter also serves the purpose of acting as a stop surface for block 31 as the hopper sash is opened thereby limiting the extent of window opening (see FIG. 2b). This arrangement serves adequately to hinge the lower hopper sash 12 to the frame 11 and permit limited inward movement thereof.

The glazing of the sash members can be accomplished by any suitable means; however, as shown with reference to upper vent sash 13 in FIG. 2a, the glass 41 is puttied at 42 with the latter being held in place by hollow channels 43 surrounding the inner periphery of the sash and bearing against the puttied edge portion or the glass.

.The lower hopper sash 12 is provided with a rotatable latch lock 51 which is engageable behind catch 52 screwed onto the underside of lower sash bar 19. Owing to the linkage arrangement of the actuating mechanism described above, locking the lower hopper sash closed will also effectively lock the upper vent sash closed since the upward compressive force on the push rod 27 is at a maximum in this position.

With reference to the mode of operation of the window construction described above, FIGS. 3a and 351 show the upper and lower sash members in their closed position. When the lower hopper sash 12 is unlocked and drawn inwardly, lower toggle lever 32 will lower the push rod 27. This motion will in turn force upper link rod 26 against the central portion of upper toggle lever 22 rotating the latter outwardly. The pivotal interconnection of toggle lever 22 with the upper vent sash 13 will cause the latter to slide downwardly in slide- Way 23 while it is simultaneously pivoted outwardly into the position shown in FIG. 2a. it can be seen that in this position that there is sufficient space between the upper part of the frame 11 and the upper vent sash 13, for one to clean the exterior of the latter by reaching out from the inner side of the window. When the lower hopper sash 12 is manually forced to the closed position, the lower toggle lever 32 will move the push rod 27 upwardly closing upper 'vent sash l3 by interaction of the upper toggle lever 22 and upper link rod 26. As the lower hopper sash is gradually closed, the upward compressive force transmitted to the push rod 27 by the lower toggle lever 32 increases to a maximum in the closed position (shown in Fl. 31:) where the angle between the two members is about 180 degrees thereby locking the upper vent sash closed. In the closed position the sash members press against the frame members along weather seal portions 61 which are preferably of rubber or plastic to form a seal.

As previously indicated, more than one upper vent sash may be mounted in a single window construction in the same manner as shown herein for vent sash 13, all of which may be similarly operated by a single actuating push rod.

The above described window construction has been found to be particularly advantageous in realizing the above mentioned objects of this invention, and particularly to provide a smoothly acting window of the vent and hopper type which may easily be cleaned from the inside. Further, the Window construction of this invention closes as smoothly and easily as it opens which is not generally true of conventional vents pivoted on swing arms that slide down from the top.

Other modes of applying the principle of the invention may be employed, change being made as regards the details described, provided the features stated in any of the following claims or the equivalent of such be employed.

1 therefore, particularly point out and distinctly claim as my invention:

1. A window structure comprising a main frame, a pair of transversely extending frame members, a lower hopper sash hinged at its base opening inwardly, an intermediate flxed pane mounted between said frame members, an upper vent sash pivotally and slidably connected at its top to said main frame for downward sliding and outward swinging movement, a push rod in a side of said main frame reciprocable in the vertical direction, a lower toggle lever pivotally connected to the lower part of said push rod and to the side of said lower hopper sash, an upper toggle lfiVei' pivotally connected to said main frame and to the side of said upper vent sash, and an upper link pivotally connected to the upper part of said push rod and to said upper toggle lever, whereby inward movement of said lower hopper sash lowers said push rod by said lower toggle lever thereby forcing said link against said upper toggle lever to lower and swing said vent sash outwardly.

2. A window structure comprising a main frame, a pair of transversely extending frame members, a lower hopper sash hinged at its base opening inwardly, an intermediate fixed pane mounted between said frame members, an upper vent sash pivotally and slidably connected at its top to said main frame for downward sliding and outward swinging movement, a push rod vertically reciprocable in the side of said main frame, the lower end of said push rod being connected to vertically slidable block means, a lower toggle lever pivotally connected to the lower part of said block means and to the side of said lower hopper sash, an upper toggle lever pivotally connected to said main frame and to the side of said upper vent sash, and an upper link pivotally connected to the upper part of said push rod and to the central portion of said upper toggle lever, whereby inward movement of said lower hopper sash lowers said push rod by said lower toggle lever thereby forcing said link against said upper toggle lever to lower and swing said vent sash outwardly.

3. A window structure comprising a frame, a lower hopper sash hinged at its base to said frame opening inwardly, at least one vent sash pivotally and slidably connected at its top to said frame for downward sliding and outward swinging movement, a push rod in a side of said frame longitudinally reciprocable in the vertical direction, the upper part of said push rod passing through guide means attached to said frame, said upper part of said push rod being expansible to increase the friction of the rod when passing through said guide means, a lower toggle lever pivotally connected to the lower part of said push rod and to the side of said lower hopper sash, an upper toggle lever pivotally connected to said frame and to the side of said upper vent sash, and an upper link pivotally connected to the upper part of said push rod and to said upper toggle lever, whereby inward movement of said lower hopper sash lowers said push rod by said lower toggle lever thereby forcing said link against said upper toggle lever to lower and swing said vent sash outwardly.

4. A window structure according to claim 3 wherein the upper part of said push rod is longitudinally slotted, said rod having adjustable means to expand said slot.

5. A window structure comprising a frame, a lower hop er sash hinged at its base to said frame, opening inwardly, at least one vent sash pivotally and slidably connected at its top to said frame for downward sliding and outward swinging movement, a push rod in a side of said frame reciprocable in the vertical direction, a lower toggle lever pivotally connected to the lower part of said push rod and to the side of said lower hopper sash, an upper toggle lever pivotally connected to said frame and to the side of said upper vent sash, and an upper link pivotally connected to the upper part of said push rod and to said upper toggle lever, the pivot between said upper toggle lever and said frame being laterally movable to properly set the bottom of said vent sash up tight to said frame whereby inward movement of said lower hopper sash lowers said push rod by said lower toggle lever thereby forcing said link against said upper toggle lever to lower and swing said vent sash outwardly.

References Cited in the file of this patent UNITED STATES PATENTS 1,659,103 Hauser Feb. 14, 1928 1,959,941 Wiley May 22, 1934 2,087,760 Hauser July 20, 1937 2,403,565 Triller July 9, 1946 2,617,156 McMurray Nov. 11, 1952 2,620,523 Broleman Dec. 9, 1952 2,743,796 Focht et al May 1, 1956 2,778,630 Pearson Jan. 22, 1957

Claims

1. A WINDOW STRUCTURE COMPRISING A MAIN FRAME, A PAIR OF TRANSVERSELY EXTENDING FRAME MEMBERS, A LOWER HOPPER SASH HINGED AT ITS BASE OPENING INWARDLY, AN INTERMEDIATE FIXED PANE MOUNTED BETWEEN SAID FRAME MEMBERS, AN UPPER VENT SASH PIVOTALLY AND SLIDABLY CONNECTED AT ITS TOP TO SAID MAIN FRAME FOR DOWNWARD SLIDING AND OUTWARD SWINGING MOVEMENT, A PUSH ROD IN A SIDE OF SAID MAIN FRAME RECIPROCABLE IN THE VERTICAL DIRECTION, A LOWER TOGGLE LEVER PIVOTALLY CONNECTED TO THE LOWER PART OF SAID PUSH ROD AND TO THE SIDE OF SAID LOWER HOPPER SASH, AN UPPER TOGGLE LEVER PIVOTALLY CONNECTED TO SAID MAIN FRAME AND TO THE SIDE OF SAID UPPER VENT SASH, AND AN UPPER LINK PIVOTALLY CONNECTED TO THE UPPER PART OF SAID PUSH ROD AND TO SAID UPPER TOGGLE LEVER, WHEREBY INWARD MOVEMENT OF SAID LOWER HOPPER SASH LOWERS SAID PUSH ROD BY SAID LOWER TOGGLE LEVER THEREBY FORCING SAID LINK AGAINST SAID UPPER TOGGLE LEVER TO LOWER AND SWING SAID VENT SASH OUTWARDLY.