US1218348A - Sash-pivot. - Google Patents

Description

J. W. YATES.

SASH PIVOT.

APPLICATION HLED JUNE 20. 19l6.

Patented Mar. 6., 1917.

J m/Euro Jbhn van awes- M on 51 JOHN W. YATES, OF NEW YORK, N. Y.

SIASI-I-PIVOT.

Application filed June 20', 1916. Serial No. 104,648.

To all whom it may concern:

Be it known that I, JOHN W. YATns, a citizen of the United States, residing in the city of New York, borough of Manhattan, county and State of NewYor-lr, have invented a certain new and usefulSash-Pivot, of'which the following is a specification.

This invention is a sash pivot, particularly adapted for use on fireproof windows of warehouses, factories, etc", and embodies, speaking generally, means for mounting the sash for pivotal movement, with which means is associated a latch or detent for automatically limiting the opening move ment of the sash to a predescribed angle, where it is held by suitable means, such as a fusible link. When a fire takesplace in proximity to such window,.the fusible link" melts, and, as the angle of inclination of the sash, when open, is such that the line of Weight of said sash falls outside ofthe pivotal connection, the disruption of the fusible link releases the sash and allows it to gravitate into closed position.

The mountings for sashes of this type are 1n the form of two pivots, one at either slde of the sash. With one of the pivots is asso-.

ciated' the means for normally limiting the movement of the sash to a predetermined angle of inclination, while the other pivot serves purely as apivot, and generally has no such means'associa'ted therewith, as the sash may bereadily governed from one of its lateral edgesonly. The present invention is directed to the pivot which is associated with the means for limiting the opening movement of the sash.

The object of this invention is to improve upon sash pivots of the general character described in order to make them-more positive in their operation, stronger in construction,

and operable with greater expedition.

In one of its practical forms, the invention embodies a pivot plate adapted to be mounted on'one of the side stiles-of a sash and provided with an integral, laterally extending pivot pin journaled in astop plate fixed on the window frame. The stop plate is provided with two shoulders or steps adapted to be engaged by a latch mounted on the pivot plate, for pivotal movement about an axis extending forwardly of the pivot plate andat an oblique angle to the face of said plate. l/Vith said latch cooperates a weight which forces the latch into engagement with Sp e'cification of Letter's'latenti the stops of the stop plate in accordance with the manipulations of'the sash and latch.

Features of the invention, other than those specified, will be. apparent from'the hereinafter detaileddescription taken in conjunction with the accompanying drawing.

In the acompanying drawing, I have illustrated One practical embodiment of the invention, but the construction shown therein only, and

is to be. understood as illustrative, not as defining the limits of the invention.-

Figure 1' is a fragmental, vertical section through a .window-sashz showing the preferred form of the present invention in elevation, said section being taken in the plane of the line 1 Fig. 2 1s a secti'onal view similar to that shown in Fig; 1, but illustrating the sash in its normally open position for ventilation;

Fig. 3 is a section taken on line 3.3 of Fig. 4, showing the sashinthe reversed position to which it may be moved for thepurpose of cleaning the outside of the'sash pane.

Fig. 4; is a front elevation'of the structure as shown in Fig-.1, and

Fig. 5' is a fragmental' perspective of the upper portion of'the sash plate;

Referring to the drawings, Adesignates a pivot plate, which is secured by a plurality of bolts or screws a to the faceof one side stile of a window-sash B Formed integral with pivot plate A is a horizontal, laterally extending pivot pin C adapted to extend 'into a journal in theform of' a circular hole 0 in a stopplate D positioned at right angles to pivot plate A; and secure'd'to the window frame by a plurality of screws cl. By the cooperation betweenjpivot pin' C and the stop plate, the side stile of sash B is mounted for pivotal movement within the frame.

At the upper portion of pivot plate A, and near its lateral edge, said plate is provided with a forwardly extending bracket the forward face (4 of which is vertically inclined', as shown Ill! detail in Fig. 5, so as to lie in a plane in obtuse angular relation to the face of window-sash B. Pivoted to'the face a by means of'a rivet, bolt or screw e, isa latch E, shown in the form of a. bellci'a-n-k, one arm ofwhich is provided with a nosee and the other arm of whichis formed into a weight 6 1 i Formed on the forward edge of stop plate D is a shoulder f, the'upper face of which is Patented'Mar. e, 1917.

1 of-Fi 4', and showing the sash in closed position.

when sash B is in theclosed position shown in Figs. 1 and 4t, weight 6 of latch E will maintain nose 0 of said latch in engagement with the adj accn-t face of stop plate D, and this relation of the parts will remain the same as long as the sash is in closed position. As the sash is opened, latch E is bodily gyrated, with its nose still in engagement with said face of plate 1), until the sash has been inclined to the position in which it is desired to normally maintain the same for ventilating purposes, at which time the nose of the latch has advanced to a point opposite the cut-away or recessed portion f of the step plate. When the latch reaches this position, its nose is no longer in engagement with the stop plate and, because of its weightedarm 0 is rotated into a position within recess 7. In order to preclude the latch from overtraveling, the lower portion thereof is formed with a heel 6 which, when the nose 6 enters the recess of the stop plate, engages with the face of said plate to preclude over-travel of the latch. It will be manifest that, when the nose of the latch is positioned as described, in the recess of the stop plate, its forward face will come into engagement with shoulder f and preclude further pivotal movement of the sash.

As an additional precaution against overtravel of the latch, as well as to preclude its travel in the opposite direction to such eX- tent that it would engage with and dent the metal from which fireproof sashes are generally constructed, the back side of the depending arm of the latch is preferably provided with a rib or projection 6 which loosely lies between two substantially vertical flanges (4 which extend downwardly from the forwardly extending bracket a and at the lateral edges thereof. The relation between flanges a and projection or rib e is such as to allow of the required pivotal movement of the latch for its proper operati on, but to preclude over-travel of the latch in either direction. Heel 6 is thus relieved of excess strain, and, at the same time, pivotal movement of the latch in the opposite direction is restricted to such extent that the weighted portion 6 will not engage with and dent or scratch the sash.

The pivoting of latch E to oscillate, figuratively speaking, in a plane oblique to the plane of the face of the sash, by positioning its pivot at an obtuse angle to the face of the sash, plays an important part in making the present invention superior to any sash pivot heretofore employed. When the sash is in closed position, face M, on which the latch is pivotally mounted, lies, in the preferred construction shown in the drawing, in a plane at substantially i5 degrees to the vertical, whereas, wl en the sash is inclined to its i 'entilating position shown in Fig. 2, said face is substantially vertical. -Accordingly, when the sash is closed, latch E lies on, and is, literally, supported by, face a so that its weight is not imposed entirely upon pivot e. lilorem'er, the tendency of weighted arm 0 to oscillate the latch is not so great as if the latch were pivoted on a horizontal pivot, and, accordingly, the fric tion between nose 6 and the face of the stop plate, when the sash is opened, will not be so great, with the result that the wearing of the free of nose 6 is almost entirely obviated. It will. be remembered that, when sash pivots of this type are once installed in a building, they are expected to withstand the use of a long term of years, and, where the sashes are opened and closed two or more times every day, the wear on the nose of the latch, while not very much each time, will, after a comparatively short period, he suliicient to impair the maximum efficiency of the latch. Thus, while the face of the stop plate D guides the nose of. the latch into engagement with shoulder the weighted arm 6 of said latch will not be brought bear with its entire force to swing the latch into the recessed o-r cut-away portion f until the sash has substantially reached its predetermined ventilating inclination, at which time pivot 6 will be substantially horizontal and will allow of the proper swinging operation.

The mounting of the latch as described results in still another, and very important, feature, viz., that it allows of the positioning of shoulder 7 at a maximum distance from pivot G, the making of this shoulder quite extensive, and also the bringing of said shoulder almost under the pivotal connection between the latch and the pivot plate, as shown more particularly in Fig. 2. relatively broad expanse of the latch thus lies directly upon the shoulder, when the sash is open as described, and there is an upward thrust on its pivot c, which is transmitted directly to the bracket portion a. of the pivot plate. The leverage thus afforded by the sash pivot of this invention, for withstanding the strains occasioned by the sash when in ventilating position, is thereby considerably in excess of any of the pivots heretofore suggested, and greatly increased strength thereby results.

It will, of course, be understood that the window is maintained in its ventilating position by the usual means, generally in the form of a chain embodying a fusible link, said fusible link being adapted for disruption, upon the application of heat, to release the sash and allow of the automatic closing of the sash. lVhen the thereof. The structure of the latch and stop plate D, with which it cooperates, is such that, when the sash is released, upon the disruption of the link, the sash will automatically gravitate into closed position. It will be of the latch extends into the recessed or cutaway portion f, will not in the least inter fere with the closing movement of the sash, since, as shown in Fig. 3, said nose lIS beveled or curved so that, when it comes into engagement with the upper edge of said recessed portion, it will be forced into a retracted position. The latch cannot fail to operate as described, since the weight of the sash is so greatly in excess of the weight of the latch, and the oblique pivoting of the latch as described is, moreover, conducive to maximum efficiency in the retracting operation.

As windmvs of the type with which this invention is adapted for use are often in very inaccessible positions, which preclude them from being washed from the outside, the latch is adapted for movement to allow of the reversing of the sash so that it ma be cleaned from the inside of the building. It will be manifest that, when the sash is in the position shown in Fig. 2, with the nose of the latch in engagement with shoulder 7", with which it has come into engagement automatically upon the opening of the sash to its ventilating position, it will normally preclude the further pivotal movement of the sash in an opening direction. However, the latch may be grasped in the hand and manually operated to withdraw or retract its nose from the recessed portion f and out of engagement With shoulder 7. WVhen this has been accomplished, there is nothing to preclude the further rotation of the sash, so that it is free to move into the reversed position shown in Fig. 3. To preclude over-travel of the sash, a projection d is formed on the stop plate, in the path of nose 6, and said stop is so positioned that, after the sash has been re versed to a predetermined extent, the nose of the latch engages with projection cl, which precludes further reversing movement sash is in reversed position, it may be readily cleaned from the inside, and, after the cleaning operation, it may be again rotated to at which time the latch will automatically assume its operative position, shown in Figs. 1 and 4.

Having thus fully described the invention, what I claim as new, and desire to secure by Letters Patent, is: I

1. A sash pivot embodying a pivot plate, provided witha portion having an inclined surface, and which pivot plate is adapted to be mounted on a sash, a horizontally positioned pivot pin fixed on said pivot plate,

noted that the fact that nose 6 its closed position,

pivot plate, a latch pivoted astop plate adapted to be secured on a window frame and provided with an aperture into which a pivot pin extends, a shoulder, on the stop plate and a latch pivotally mounted on the inclined surface of the pivot plate and adapted to engage with the shoulder on the stop plate, whereby said latch is pivoted for oscillation on an axis extending obliquely to the face of the sash on which the pivotplate is mounted.

2. A sash pivot embodying a pivot plate, provided with a portion having an inclined surface, and which pivot plate is adapted to be mounted on a sash, a horizontally positioned pivot pin fixed on said pivot plate, a stop plate adapted to be secured 011 a wine dow frame and provided with an aperture into which the pivot pin extends, a shoulder on the stop plate and a latch pivotally mounted onthe inclined surface of the pivot plate and adapted to engage with the shoulder on the stop, plate, whereby said latch is pivoted for oscillation on an axis extending obliquely to the face of the sash 011 which the pivot plate is mounted, said latch V 'being weighted whereby a portion thereof is maintained in engagement with the stop plate during the opening movement of the sash for the purpose of guiding said latch into engagement with said shoulder.

3. A sash pivot embodying a, stop plate adapted to be mounted on a window frame and provided with an aperture, a shoulder on said stop plate, a pivot plate adapted to be mounted on the sash within the window frame, apivot pin fixed on said pivot plate and extending into the aperture in the stop plate for pivotally mounting the sash relative to the window frame, a vertically inclined surface at the upper portion of said pivot plate, a latch pivoted to said surface with the axis of pivotal movement of said latch in oblique relation to the face of the sash, and means for maintaining a portion of the latch in engagement with the stop plate during the operation of tilting the sash, said means being also operable to shift the latch into cooperative relation with the shoulder of the stop plate after the sash'has been tilted to a predetermined extent.

4. A sash pivot embodying a stop plate adapted to be mounted on a window frame and provided with an aperture, ashoulder on said stop plate,-a pivot plate adapted to be mounted on the sash within the window frame, a pivot pin fixed on said pivot plate and extending into the aperture in the stop plate for pivotally mounting the sash relative to the windowframe, a vertically inclined surface at the upper portion ,of said intermediate its ends to said surface with the axis of pivotal movement of said latch in oblique relation tothe face of the sash, and means, coiiperating with one arm of the latch, for maintaining the other arm in engagement with the stop plate during the operation of tiltinnthe sash, said means being also operable to shift the latch into cooperative relation with the shoulder of the stop plate after the sash has been tilted to a predetermined extent.

5. A sash pivot embodying a stop plate adapted to be mounted on a window frame and provided with an aperture, a shoulder on said step plate, a pivot plate adapted to be mounted on the sash within the window frame, a pivot pin fixed on said pivot plate and extending into the aperture in the stop plate for pivotally mounting the sash relative to the window frame, a vertically inclined surface at the upper portion of'said pivot plate, a latch pivoted to said surface with the axis of pivotal movement of said latch in oblique relation to the face of the sash, means for maintaining a portion of the latch in engagement with the stop plate during the operation of tilting the sash, said means being also operable to shift the latch into cooperative relation with the shoulder of the stop plate after the sash has beentilted to a predetermined extent, and said latch being manually shiftable from a position wherein it is in engagement with the shoulder to allow of further pivotal movement of the sash, and means for limiting such further pivotal movement to a predetermined maximum.

6. A sash pivot embodying a stop plate adapted to be mounted on a window frame and provided with an aperture, a shoulder on said stop plate, a pivot plate adapted to be mounted on the sash within the window frame, a pivot pin fixed on said pivot plate and extending into the aperture in the stop plate for pivotally mounting the sash relative to the window frame, a vertically inclined surface at the upper portion of said pivot plate, a latch pivoted intermediate its ends to said surface with the axis of pivotal movement of said latch in oblique relation to the face of the sash, means cooperating with one arm of the latch for maintaining the other arm in engagement with the stop plate during the operation of tilting the sash, said means being also-operable to shift the latch into cooperative relation with the shoulder of the stop plate after the sash has been tilted to a predetermined extent, and said latch being thereafter manually shiftable to a position free from engagement with the shoulder of the stop plate to allow of the reversal of the sash, and a projection on the stop plate and in the path of the latch for limiting the reversing movement of the sash.

7. A. sash pivot embodying two plates pivoted together, one of which is adapted to be secured to a window frame and the other to a sash to pivot-ally support the same within the frame, a shoulder on the frame plate, and a cooperating latch on the sash plate, the sash plate being provided with a portion having an inclined surface to which said latch is pivoted for oscillation on an axis extending obliquely from the face of the sash.

. S. In a device of the class described, the combination of a latch adapted to be pivotally mounted on an inclined surface on a window sash for oscillation on an axis ex tending obliquely from the face of the sash, and a shoulder secured to the frame in which the sash is mounted and adapted to engage with. the latch, when the sash has been opened to a predetermined extent, to normally preclude further. movement of the sash in an opening direction.

9. In a device of the class described, the combination of a latch adapted to be pivotally mounted on an inclined surface on a window sash for oscillation on an axis extending obliquely from the face of the sash, and a shoulder secured to the frame in which the sash is mounted and adapted to engage with the latch, when the sash has been opened to a predetermined extent, to normally preclude further movement of the sash in an opening direction, said latch being manually shiftable from engagement with the shoulder to allow of the further pivotal movement of the window into a reversed position.

10. A sash pivot embodying two plates, one of which is mounted on a sash and the other of which is mounted on a windowframe, said plates being pivoted together for pivotally mounting the sash within the frame, a shoulder on the frame plate, a cooperating latch pivoted to the sash plate, said latch being weighted to swing into engagement with. the shoulder when the window has been opened a predetermined extent, the latch being pivoted for oscillation about an axis positioned obliquely to the face of the sash, and a projection on the latch extending between two limiting projections on the sash platewhereby overtravel of the latch in either direction is precluded.

In testimony whereof I have signed my name to this specification.

JOHN YATES.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G.

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