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Publication numberUS2527278 A
Publication typeGrant
Publication dateOct 24, 1950
Filing dateAug 1, 1946
Priority dateAug 1, 1946
Publication numberUS 2527278 A, US 2527278A, US-A-2527278, US2527278 A, US2527278A
InventorsRaymond W Schemansky
Original AssigneeRaymond W Schemansky
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Window stop
US 2527278 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Oct. 24, 1950 R. W. sHEMANsKY 2,527,278

WINDOW STOP Filed Aug. l, 1946 25:29-@ /f #w25/vra? -9 FFW/www Jv. Jef/awww TWP/rey Patented Oct. 24, T950 2,527,228 WINDOW spor l'RaymanfdfYV.:fSchemanslxylletroit,Mich. u ...Applicationnugqst 1, 1946,:seria1iiva-687,802'

My invention relates to a new and useful improvement in a window stop adapted for mounting in conjunction with a pair of slidable sashes to provide means for either securing said sashes in fixed relation when in closed position or permitting said sashes to be relatively moved a predetermined distance.

It is an object of the present invention to provide a window stop of this class which will be simple in structure, economical to manufacture, durable, easily and quicklyoperated, highly efficient in use, and readily installed.

Another object of the invention is the provision of a window stop of this class which may be used for limiting slidable movement of a pair of window sashes relative to each other to a predetermined degree or which may be moved to position for preventing movement of either of the sashes out of closed position. l l

Other objects will appear hereinafter.

It is recognized that various modifications and changes may be made in the detail of structure illustrated without departing from the invention and it is intended that such shall be embraced within the scopevof the claim which forms a part hereof.

Forming a part of the specification are drawings in which,

Fig. 1 is a side elevational view of the invention showing it applied and illustrating the window sashes in closed position,

Fig. 2 is a view similar to Fig. 1, illustrating the window sashes moved relatively to each other out of closed position,

Fig. 3 is a side elevational view of the invention showing it applied and in use as a'securing member for securing the window sashes against relative movement from closed position.

Fig. 4 is a sectional view taken on line 4-4 of Fig. 2,

Fig. 5 is a sectional view taken on line 5-5 of Fig. 1, with parts broken away and parts shown in section.

In the drawings I have shown the invention applied in connection with a pair of window sashes 9 and I Il which are slidably mounted in a window frame II. Mounted on the vertically extending side rail I2 of the upper sash is a metal plate I3 having one edge turned to provide a flange I4 which extends inwardly toward the pane of glass 25 and which terminates in spaced relation to the inner face of the pane of glass 25. The end of the plate I3 is turned inwardly to provide a flange I5 which serves as a stop.

Mounted on the upper rail I6 of the lower sashr in.' (C1. cs2- 194) `is'faY metal plate I'lfhaving the upwardly projecting ange I8 in which is formed the bayonet slot I9. The metal plate 2IlI is provided with the rivet 2I which rides in the slot I9. This plate 20 is angularly turned at its end to provide the angularly turned portion 22 which is again angularly turned to provide the doubled over portion 23. The end of the plate 20 is provided with a V notch 24.

When the parts are mounted as shown in the drawings a plate 20 may be swung either to the dotted line position or to the full line position shown in Fig. 1. When swung to the full line position the plate 20 is in operative position and is in such a position that the angularly turned portion 23 will engage behind the ange I4 as clearly shown in Fig. 4. When in this position the sashes may be moved relatively to each other and Iwhen the lower sash is raised the flange 23 will ride behind the flange I4 until the abutment or stop plate I5 is engaged by the flange23. When this engagement is effected the sashes can be moved no farther and, consequently, there is thus provided a means for limiting a relative movement of the sashes from closed position so that it becomes possible to open the window at night and leave it partially open with the assurance that it cannot be opened further. When it is desired to render the device inoperative the plate 20 will be swung to the dotted line position shown in Fig. 1, and the sashes then may be moved relatively to each other without interference from the mechanism mounted thereon.

It will be noted that in these positions the rivet is occupying the end of the slot I9. When the plate 2U is moved to the left of Fig. 2, so that the rivet reaches the end of the slot I9 it will engage in the recess Z'I and when in this position it may be moved to the position shown in Fig. 3 so as to engage the lower edge of the plate I3 and thus serve as a means for securing the windows in fully closed position and preventing their relative movement from closed position.

The invention is one which may be very inexpensively manufactured, which is durable and which has proven itself most efficient in use.

What I claim is:

A window stop adapted for use with a pair of relatively movable Window sashes, one of said sashes being a lower sash and the other an upper sash and said upper sash having a vertically extending side rail and said lower sash having a horizontally extending top rail and a pane of glass in said upper sash positioned outwardly from said side rail, said stop comprising: an elon- 3 gated, vertically extended plate mounted at one edge on the face of said side rail; an angularly turned, longitudinally extending flange along the opposite edge of said plate, turned inwardly toward said pane of glass and spaced therefrom; an abutment flange on the upper end of said plate and turned inwardly toward said glass and spaced therefrom; a bracket mounted on the upper face of the top rail of the lower sash and having a longitudinally directed slot formed therein provided With a notch at 'one end; a swingable plate; a pin pivotally mounting said swingable plate on said bracket, said pin slidably engaging in said slot and being movable in said slot for engaging in said notch; a doubled-over flange on the free end of said swingable plate terminating in spaced relation to the main body of said swingable -plate to provide a space for receiving lsaid first-named iiange upon relative movement of said sashes a predetermined distance from closed position,

and. adapted for engaging said abutment upon further relative movement of said sashes from closed position, said swingable plate having a notch formed in its free end engageable with the lower edge of said vertically directed plate upon engagement of said pin in the notch of said slot for preventing relative movement of said sashes from closed position.


y REFERENCES CITED The following references are of record in the le of this patent:


Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US542401 *Jul 9, 1895 Sash-lock
US1137502 *Apr 29, 1913Apr 27, 1915John G LockeWindow-locking device.
US1442642 *Sep 22, 1921Jan 16, 1923Eli F BrickellVentilating-sash lock
US1606570 *Dec 3, 1925Nov 9, 1926Emil Hanson GeorgeAutomatic window-sash fastener
US1992033 *Dec 16, 1932Feb 19, 1935Koehler CharlesWindow lock
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4854233 *Jun 2, 1986Aug 8, 1989M.A.N. RolandProtective device on rotary printing presses
US5282658 *Nov 2, 1992Feb 1, 1994Reeves Jr Lewis WPivotally mounted door stop device
US5374103 *Apr 22, 1993Dec 20, 1994Hughes-Avicom International, Inc.Self-captivated latch pawl
US8789862 *Jun 10, 2010Jul 29, 2014Vision Industries Group, Inc.Adjustable after-market sash window stop
US20100313488 *Jun 10, 2010Dec 16, 2010Luke LiangAdjustable after-market sash window stop
U.S. Classification292/194, 292/270, 292/DIG.200, 292/338
International ClassificationE05F11/00
Cooperative ClassificationE05F11/00, Y10S292/20, E05F2700/04
European ClassificationE05F11/00