US2926399A - Hingeless casement window - Google Patents

Description

' 'Margh l, 1960 v R U 2,926,399

HINGELESS CASEMENT WINDOW Filed March 3, 1958 5 Sheets-Sheet 1 INVENTOR.

VYTAUTAS RAMUNAS BY WWW March 1, 1960 v. RAMUNAS 7 2,926,399

HINGELESS CASEMENT WINDOW Filed March 3, 1958 5 Sheets-Sheet 2 INVENTOR.

V. RAMUNAS HINGELESS CASEMENT WINDOW March 1, 1960 5 Sheets-Sheet 3 Filed March 3, 1958 INVENTOR.

VYTAUTAS RAMUNAS ArraP/vA-vr.

March 1, 1960 v. RAMUNAS HINGELESS CASEMENT wmnow 5 Sheets-Sheet 4 Filed March 3, 1958 m m 0/ I 3 4w I /llll'l'l'llIl/ll/l'l INVENTOR.

VYTAUTAS RAMUNAS HINGELESS] CASEMENT Vytautas Ramunas, Philadelphia, Pa., assignor to Michael Flynn Manufacturing Company (also known-as Michael Flynn Manufacturin Co.), Philadelphia, Pa., a corporation of Pennsylvania Application March 3, 1958, Serial No. 718,771

' 4 Claims. (Cl. 2(l 53),-

This invention relates" toav casement window preferably of the type employing a windowpane and screen.-

carrying frame and a. windowpane-carrying ventilator,

' eliminates interference betweenthe extending hingesand other architectural,- features such, as storm windows, awnings and the like. 7

An important object of this inventionv is to. provide a hingeless casement window with, quadrangle linkage pivotally attaching the ventilator .to the frame adjacent one vertical side of the ventilator andthe corresponding vertical side of the frame with. a cam means associated with said corresponding vertical sides. serving a dual function.

One function of thecammeansis toprevent. opening of the ventilator relative tothe frame dueto finger-pressure upon the verticalfside of. the ventilator near. the linkage when the ventilator is. in the closed position.

Another and important function of the cammeans. is to restrain the movement of the ventilator. asv awhole in a plane perpendicular to that, of the frame when the ventilator operatoriis initially. actuated to open the ventilator from its closed position. 7 Thus the cam means compels the ventilator to rotate about its, pivot points as the operatorisinitially actuatedto movethe venilator from the closed to the open position. This relieves strainupon the linkage connecting the ventilatorto the frame and produces a, smoothly functioning opening and closing action.

A further objectkof the invention istoprovide a hingeless casement window. of the character described with a. special means for releasably locking the vertical side members of the frame and ventilator. remotefrom the quadrangle linkage whereby thelocking means, when released, will exert an. initial pushrupon the, ventilator. to thereby-ease its. opening and reversely, will engage -the ventilator prior; to its complete closure: and pull it into a secure closed position,

nited States Pate A furtherobjectof the inventionis, to provide a hingeless casementrwindow of the character described which is relativelysimple in design and, construction, attractive and-qrelati'vely inexpensivetomanufacture and assemble.

These "and other-objects ofthe invention will. become more apparent asthe. following 'description proceeds in conjunction with the accompanying drawings, wherein: Figureljs-aperspective viewof the easement window in its open position;

2,925,399 Patented Mar. 1, 1960 Figure 2 is a: fragmentary" perspective view of the ventilator operating means;

Figure 3 is a sectional view-taken on the line; 3-3' of Figure 1;

Figure 4 is a view similar, to Figure, 3 showing; the ventilator in the act of closing;

Figure 5 is a view-similar to Figure, 3- showing. the

ventilator in its fully closed position;

Figure 6 is a sectional. view taken on the line 66 of Figure 3;

Figure 7 is a sectional viewtakenon the line; 7-l of Figure 6; g

Figure 8 is a sectional view taken on the line 8- 8- of Figure 6;

Figure 9 is a. sectional: view taken on the line 99; of Figure 5; v

Figure 10 is an enlarged diagrammatieview of one corner of the ventilator and adjacent corner of the frame showing the operation of the cam;

Figure 11 is: a perspective. view of one of the cam members on the frame;

Figure 12 is a perspective. view of acam'member on the frame with a means to adjust its position;.

Figure 13 is. a sectional detail of a modified form of cam structure;

Figure14- is a sectional view taken on the line 14-14 of Figure 5;. and

Figure: 15 is a, sectional view taken on the line IS -15- The present hingeless casement window is. generally indicated. at 10 and comprises essentially a stationary frame 12 adapted to be secured .in a supporting, structure, such as a building,. and to carry .a windowpane and screen and' a movable ventilator 14 adapted to carry a windowpane. Both the frame and the ventilator are substantially rectangular and preferably fabricated of aluminum, and preferably but not necessarily anext'rusion of. Z cross-section as shown in the drawing, The frame comprises top and bottom members 161 and? 18 joined by vertical members 20' and22 and the ventilator is also comprised: of top and bottom members 24' and 26 Which are joined byv vertical members. 28' and'30.

The ventilator is pivotally' secured to the frame at the top and bottom thereof adjacent the corresponding vertical members 20 and '28'by quadrangle linkage which is' generally indicatedat'31. SinceJthe quadrangle links at the top. and bottom of the window are'the same,. only' ing the vertical members 22 and 30 ofthe rr meami ventilator respectively.

The quadrangle linkage 31 is of the following construction. Secured to the innersurface of the vertical portion 36 of the horizontal bottom member of the frameis a U-shaped bracket 38 which is spaced a pre? determined distance from the vertical side member 20 of the frame. A short, so'mewhat angulated fiat link40i's provided one end of which extends into the bracketi3 8" and is there attachedbyfzt vertical'pivot pin, 42.'{ The other end of the short link '40'extends' beneath the hc srizontal surface ofthe; bottom member '26 'of the ventilator bracket --52 that is secured upon the horizontal surface 54 of the bottom horizontal member'18 of the frame, as shown more clearly inFigures 7 and 9. The pivot pin 50 is located at a predetermined position from the pivot pin 42 in the direction towards the vertical member 22 of the frame. The other end of the longer link 48 is pivoted by means of a vertical pin 56 to the ventilator 14, the pin 56 being carried by the U bracket 46. The pivot pin 56 is spaced a predetermined distance from the pivot pin 44 on the ventilator in the direction towards itsveftical side member 30. As will be evident from Figures 6 and 9, the longer link 48 is positioned below the shorter-link 40. The operating member 32 comprises a segmental housing 58 which is appropriately secured to the outer surface of the vertical portion 36 of the bottom member 18 of the frame. Pivoted for movement in a horizontal plane as at 60 is a segmental tooth gear 62 which extends into the housing and which also includes a downwardly offset bar 64 which extends towards the ventilator and in a plane beneath that of the longer link 48. The bar 64 is angulated in the same direction as the angulated shorter link 40 and at its free end is provided with a fork 66 which engages a pin 68 that depends from the shorter link 40 adjacent its pivot pin 44. Mounted for rotation about an axis which is at an angle to the plane of the segmental gear 62 is a worm gear 70 which engages the teeth of the'segmental gear, the worm gear being provided with an operating handle 72 that extends externally of the housing 58.

- Thus when the handle 72 is rotated in a counterclockwise direction the ventilator moves from the closed to the open position, as shown in Figure 1. Rotation of the handle in an opposite or clockwise direction will cause the ventilator to move from the open position of Figure l'to the fully closed position of Figure 5.

In the fully closed position, without more, finger pressure applied to the vertical side member 28 of the ventilator will cause the ventilator to separate from the frame in the area of thevertical side member 20 of the frame. This is undesirable. In addition, when the handle 72 is initially operated in clockwise rotation to open the ventilator, the ventilator has a tendency to move as a unit outwardly of the frame and in a plane substantially perpendicular to the frame. A position of the ventilator may thus be reached whereby continued rotation of the handle 32 will cause bending of the links connecting the ventilator to the frame and restrain the latter from rotating about its pivot points to assume the fully open position..

To overcome these two undesirable features, a special cam means is pro'vided. This cam means comprises a pair of right-triangular blocks 74 which are appropriately secured as at 76 to the inner face 78 of the vertical side member 20 of the frame adjacent the upper and lower corners thereof. The block 74 is secured to the frame side member via one of its legs, as shown clearly in Figure 11, 'so that the hypotenuse 80 thereof faces the front of the frame. Appropriately secured to the outer face 82 f the verticalside member 28 of the ventilator are similar right-triangular cam blocks 84 which are in horizontal alignment with the frame cam blocks 74. The cam blocks 84 are secured to the ventilator side member 28 via their legs so that their hypotenuses 86 face rearwardly of the ventilator.

When the ventilator is in its fully closed position as shown in Figure and in solid lines in Figure 10, the hypotenuses of the frame and cam blocks abut. Finger pressure on the vertical side member 28 of the ventilator a will not cause theventilator to separate from the frame at said location because such-pressure will cause the cams more firmly to engage.

Moreover, as shown clearly in Figure 10, when the handle 72 is initially operated to cause the ventilator to open, the hypotenuses of the cam blocks ride over each other and restrain the ventilator from moving as a unit outwardly'from the frame and in a plane substantially perpendicular thereto. Instead, the cams riding over each other immediately cause the ventilator to move in a rotary position about its pivot pins so that the ventilator opens smoothly from the very moment that the handle 72 is actuated.

As shown in Figure 12, the frame cams 74' may be adjustably mounted upon the frame" side member 20. This can be effected in various ways, one of which is to provide the cam block with a flange 88 and transversely extending slots 90 with screws 92 extending through the slots and into appropriate threaded holes in the side member 20 ofthe frame. Although in most instances the predetermined positions of the cams during manufacture of the window will suffice, some field adjustment may be required.

In Figure 13 a modification of the cam structure is shown. The cam 84 which is secured to the outer surface 82 of the vertical side member 28 of the ventilator is right-triangular and the same as the cam 74 previously described. The cam which is attached to the frame side member 20 is, however, a segmental block 94 which is secured via one of its legs as at 96 to the inner surface 78 of the vertical side member 20 of the frame. The block 94 has an arcuate surface 98 which faces the front of the frame and which engages the hypotenuse 86 of the block 84 when the ventilator is in its fully closed position, as shown in Figure 13. The engagement of the arcuate surface 98 of the frame cam block with the hypotenuse 86 of the ventilator cam blo'ck causes a smoother rotation of the ventilator about its pivot points when the handle 72 is operated to initially urge'the ventilator from its closed to its open position.

Coming now to the special locking means 34, it will be seen particularly from Figures 14 and 15 that the same comprises a keeper. 100 which is in the form of a bracket 102 that is secured as at 104 to the outer vertical surface 106 of the vertical side member 30 of the ventilator 14. The keeper bracket 102 is provided with two transversely spaced outwardly extending shoulders 108 and 110 both ofwhich terminate adjacent the longitudinal center ofthe keeper bracket in curved edges 112.

Secured to the outer surface -114 of the vertical side member 22 of the frame 12- as at 116-is a bracket 118. A latch bar 120 is provided having a horizontally extending pin 122 which is pivoted to the bracket 118 so that the latch bar is movable in a vertical plane perpendicular to that of the frame. One portion of the latch bar 120 is curved and extends externally of the frame as at 124 and constitutes a handle. Another portion of the latch bar 120 extends through an appropriate opening in the vertical side member 22 and is curved in a direction reverse to that of the handle portion 124.

When the ventilator is in the closed position, the locking latch 34 is in the position shown in solid lines in Figure 14 wherein the curved latch portion 126 extends between the shoulders 108 and 110 of the keeper. When the operator is ready to open the ventilator, he pulls the latch handle 124 upwardly into the position shown in dotted lines in Figure 14 whereupon the curved latch portion 126 abuts the shoulder 110 of the keeper and exerts a positive initial push on the ventilator to separate it from the frame thereby easing the opening of the ventilator subsequently by the handle 72. Reversely, when the ventilator is moved towards the closed position, it reaches a point where the curved latch portion 126 enters the space between the keeper shoulders 108 and 110. At this point a downward movement of the latch handle 124 causes the curved latch portion 126 to abut the first keeper shoulder 108 and thereby pull the ventilator towards the frame to insure a more secure closing.

While preferred embodiments of the invention have been shown and described hereabove, it will be understood that minor variations may be made by skilled artisans without departing from the spirit of the invention and the scope of the appended claims.

I claim:

1. A casement window comprising a substantially rectangular frame having a pair of vertical edges connected by a pair of horizontal edges, said frame being adapted to be secured in a supporting structure, a substantially rectangular ventilator having vertical edges and horizontal edges corresponding and complementary to those of the frame, quadrangle linkage connecting the opposite horizontal edges of said ventilator to the corresponding horizontal edges of the frame, said linkage being positioned adjacent one of the vertical edges of said. frame to provide a movement of said ventilator relative to said frame which is both pivotal and rectilineal, an operating member mounted on said frame and operatively connected to said ventilator to move said ventilator from a closed position in a plane substantially parallel to that of the frame to a fully open position in a plane substantially perpendicular to and spaced from that of the frame, at least one cam member on the inner surface of that vertical edge of said frame which is adjacent said linkage, a correspondingly positioned cam member on the outer surface of the complementary vertical edge of said ventilator, complementary cam surfaces on said cam members, said cam surfaces being in abutment with each other when said ventilator is in said closed position to prevent relative movement between said ventilator and said frame, and said cam members being relatively slidable along their respective cam surfaces during movement of said ventilator toward and from said fully open position, said cam-members being spaced from each other when said ventilator is in said .fully open position.

2. A casement window comprising a substantially rectangular frame adapted to be secured in a supporting structure, a substantially rectangular ventilator, quadrangle linkage connecting the opposite ends of said ventilator to corresponding portions of the frame to provide a movement of said ventilator relative to said frame which is both pivotal and transverse, an operating member mounted on said frame and operatively connected to said ventilator to move said ventilator from a closed position in a plane substantially parallel to that of the frame to a fully open position in a plane substantially perpendicular to and spaced from that of the frame, cooperating cams on said frame and said ventilator, said cams having cam surfaces contoured to matingly abut each other when said ventilator is in said closed position and to slide upon each other during movement of said ventilator toward and from said fully open position, said cams being spaced from each other when said ventilator is in said fully open position, a latch means on said frame and a keeper on said ventilator, said latch means having an arcuate cam portion releasably and selectively engageable with a pair of coacting cam elements on said keeper to positively impel the ventilator away from said frame to overcome frictional inertia between said cams when said arcuate cam portion engages one of said elements and to positively pull the ventilator toward said frame to frictionally engage said cams when said arcuate cam portion en gages the other of said cam elements.

3. The casement window of claim 2 wherein said cams each comprise right-triangular blocks, the hypotenuse of each block comprising the. cam surface thereof.

4. The casement window of claim 1 wherein oneof said cams is a right triangular block with the hypotenuse thereof forming its cam surface while the cam surface of the other of said cams is arcuate.

References Cited in the file of this patent UNITED STATES PATENTS

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