US2472216A - Window stop - Google Patents

Description

June 7, 1949. R. J. KASIK WINDOW STOP Filed July 8, 1947 IN VEN TOR.

Patented June 7, 1949 UNITED STATES FATENT OFFICE WINDOW STOP Robert J. Kasik, Chicago, Ill. Application July 8, 1947, Serial No. 759,564

6 Claims.

This invention relates generally to window stops and more particularly to a window stop which may be selectively positioned on a window.

In the prior art many attempts have been made to provide a window stop or sash lock which will be effective to prevent a window which is partially open from being further opened by someone from the outside. Various arrangements have been devise wherein wedges are fastened to the side rails of a sash by screws or other similar means to be engaged by a rail of the window sash. These arrangements have been objectionable both because the securing means mars the sash and because the stop is secured in a fixed postion and cannot be adjusted to permit opening the window any amount desired.

It is, therefore, an object of the present invention to provide an improved window stop which may be adjustably positioned to permit opening the window any desired amount.

Another object of this invention is to provide window stop which may be positioned on a Window to limit the opening of the sash to a desired amount and which may be removably positioned on the window Without marring the same.

A feature of this invention is the provision of a wedge-shaped window stop having a finger adapted to be positioned between the side rail of a window sash and the parting strip between the sashes for holding the stop in position.

A further feature of this invention is the provision of a window stop including a metal channel and a resilient wedge-shaped block positioned therein in which the channel includes a finger adapted to hold the stop in position to be wedged between the sashes of the window to limit the opening of the window.

A still further feature of this invention is the provision of a window stop including a metal channel with spurs on the sides thereof which dig into the sash to prevent movement of the stop when an attempt is made to force the window open.

Further objects, features and advantages will be apparent from a consideration of the following description taken in connection with the accompanying drawings in which:

Fig. l is a front view of a window on which a stop in accordance with the invention has been positioned;

Fig. 2 is a cross-sectional view along the lines 2-2 of Fig. 1;

Fig. 3 is a cross-sectional view along the lines 8-3-of Fig. 1;

Figs. 4 and 5 are perspective views of the window stops in accordance with the invention; and

Figs. 6 and '7 illustrate modified supporting fingers for window stops in accordance with the invention.

In practicing my invention I provide a window stop including a resilient wedge-shaped block and a metal channel in which the resilient block is supported. The wedge may be supported by being cemented in the channel or by the provision of integral lugs on the channel which can be bent to pierce the resilient block. The channel includes a finger which is adapted to be positioned between the side rail of a sash and the parting strip between the sashes of a window to hold the stop in position. This finger may include a prong to engage the sash or may extend around the edge of the sash to hold the stop in place. The metal channel includes spurs adjacent the top of the wedge which normally do not contact the side rail of the sash but which will be caused to dig into the side rail when excessive force is applied in an attempt to open the window against the stop.

Referring now to the drawings, in Figs. 1, 2 and 3 there is illustrated a window It including an upper sash H and a lower sash it. The upper sash includes side rails l3, 9. top rail [4 and a bottom rail [5. The lower sash similarly includes side rails [6, a top rail l1 and a bottom rail l8. A look l9 which may be of any standard construction is provided for locking the sashes when the window is entirely closed. A window stop 20 in accordance with the invention is secured to a side rail l3 to prevent opening the sash 12 more than a predetermined amount as will be explained.

In Figs. 2, 3 and 4 the detailed construction of the window stop 20 as well as the manner in which it may be used on a window is clearly illustrated. The stop includes a resilient block 2! which may be made of rubber or similar resilient material and a metal channel 22 in which the resilient block 2| is secured. The resilient block 2| is wedge-shaped and the metal channel 22' is similarly wedge-shaped with the sides 23 thereof covering only a portion of the sides of the resilient wedge. A plurality of integral lugs 24 are provided on the sides 23 which are bent in such a manner that they are imbedded in the resilient block to secure the block and channel together as a single unit. A finger 25 is provided on the channel 22 for holding the stop in position on the window. As clearly shown in Fig. 3, thisfinger extends in the space between the side rail l3 of the sash H and the parting strip 26 between the sashes H and I2. In most windows this space is sufiiciently small that a finger made of thin sheet metal will be held tightly therebetween so that the stop will be held in position on the side rail 13 of the sash. The surface of the resilient block 2! engages the surface of the sash and the friction between these members also helps hold the stop in position. The sides 23 of the=channel also includes spurs 21 positioned at the thick end of the wedge, the spurs having pointed ends which extend almost to the surface of the resilient block. A clearance of of an inch has been found satisfactory in models tested.

With the window stop positioned on the upper sash as shown in the drawings,the amount which the lower sash can be raised is limited as clearly illustrated in Fig. 2. In this figure the lower sash I2 is shown in.dot-dash lines-in the uppermost position towhich it canbe raised with the window stop 20 in place. It will be noted that the edge. 28 of the upper :rail' I! of the sash- 12 engages the back of themetal channel 22..so that the window cannot be further raised. It is apparent that if the-window sash l2 is raised further so thattheupper rail I! thereof is pushed against the stop 20 with relatively great force, the resilient block 2| willbe compressed and the prongs 21 of the channel will dig into the surface of the side rail 13 sovthat the stop actspositively toprevent further opening of the sash I 2. -As previously stated, the spurs are normally a slight distance from the side rail l3'as, .for example, 1 5 of an inch-and will, rthereforanotnormally engage the rail. It=is only in emergencies-when the lower sash is raised withigreat force. that the. spurs'would be effective to digintojlthe side rail.

It is obvious .that :the stop 201can. be.-positioned in any desired position on thesiderail .l3 to thereby limit the opening of the lower sash t0 any..desired point. This makes it possible to raise the window difierent amounts as --may be desired depending upon the temperature outside. a room. -Thisis important-as the stop is most eifective when it.is placed so that it will be --engaged by the lower sash* when the sash l 2 is open.

As.is well known,-ini older houses the window sashes normally-fit more loosely and, therefore, a straight finger as illustrated in Fig. 4 might not fittight'enough between'the side rail I3 and the parting strip 26 of the window to hold the stop in place. In such cases a prong may be punchedinlthefinger to engage the side rail l3 of the upper sash II. In Fig. 6 a modified finger 30 is shown having a prong 3| therein. It. is noted that the finger 30 is curved slightly so that the prong will be held against the side rail of the upper sash when the stop is in position. As the curved finger 30 provides a spring action, the prong 3| can be very small and still be effective to hold the window'stop in position on the-window. It has been foundthat a prong only about twenty-thousandths of an inch long is adequate tohold the'stop in position. It is to be pointed out that the prong 3| is not-forthe purpose of holding the stop against movement when it. is engaged by the lower sash but is used only to hold the stop in. position when the stop is not actually in use. When the stop is engaged bythe lower sashthe wedging oftheistop between thezsashes locks the stop. imposition, and} prevents further movement of the lower sash as previously described. As the prong is very short it does not prevent adjustment of the position of the stop on the window. Further the prong does not objectionably mar the window, as the prong engages the side rail underneath the parting strip and any scratching of the side rail caused by the prong will be hidden by the parting strip.

In addition to holding the stop in position on the window, the prong 3| on the holding finger 30 is eifective to hold the stop stationary with respect to the upper sash l I when the sash is moved up and down. This provides an additional advantage as it limits the downward movement of the upper sash. Therefore, it is seen that the stop is effective to prevent unintentional lowering of the upper sash II, as when the sash II is pulled down the stop will engage the top rail I! of the lower sash to prevent further opening of the top sash.

In Fig. 7 there is shown a further modification of the finger of the stop. In this figure the finger 35 is L-shaped-having a portion 36 extending around the corner of the side rail l3. Inthis case the stop would have to be inserted by lowering the upper sash and inserting the stop from the top of the window. .The portion extending around the edge of the side rail would hear suificiently against the rail to prevent the .stop from slipping out of the window or sliding-with respect thereto. A stop with such a fingerwould also work well in a relatively loose windowas stated above.

It is to be pointed out that the resilientwedge 2| can be secured to the channel 22 in any-suitable manner other than by the useoflugs '24. For example, the resilient member may "be cemented in the channel as shown in Fig.5. Also the stop may take various other configurations than that illustrated in the drawing and the parts thereof can be made of any suitable material, not. being limited to the materials mentioned.

It is seen from the above that I haveprovided a very simple andv inexpensive window stop which may be placed on the upper sash at any desired position to limit the opening of the lower sash. As the position. of thestop can be changed as desired, it will be eifective to limit the openingof the lower sash to the amount desired. The stop does notneed to be permanently securedto. the sash and will not mar the sash asthe sash is normally engaged only by the surface of the resilient block.

While I have described what I consider tobe the preferred embodimentsv of my invention, it is apparent that various modifications and changes can be made therein without departingiromthe intended scope of the invention as defined in the appended claims.

I claim:

1. In a window including movable upper and lower sashes and a parting strip betweensaid sashes, a wedge shaped stop for limiting the movement of said lower sash including a finger adapted to be positioned between said upper sash and parting strip for holding said. stop-in any desired position on said uppersash, said finger having a pron thereon and being curved so that said, prong engages said upper. sash, said stop being arranged to be wedged between 'said upperand lower sashes when it is engaged-by said lower sash to thereby limit thermovement thereof.

2. A window stop including a Wedge-shaped resilient block and a metal channel supporting the same, said channel including a finger adapted to be positioned between the upper sash and the parting strip of a window to hold said stop in any desired position thereon, said channel being arranged to be engaged by the lower sash of said window when it is raised to prevent said lower sash from being raised more than a predetermined amount.

3. A window stop including a wedge-shaped resilient block and a metal channel supporting the same, said channel including integral lugs for holding said block thereon and a finger adapted to be positioned between the upper sash and the parting strip of a Window to hold said stop in any desired position thereon, said channel being arranged to be engaged by the lower sash of said window when it is raised to prevent said lower sash from being raised more than a predetermined amount.

4. A window stop including a Wedge-shaped resilient block and a metal channel supporting the same, said channel including a finger adapted to hold said stop in any desired position on the upper sash of a window, said stop being arranged I to be wedged between the upper and lower sashes of said window when said channel is engaged by said lower sash, said channel including spurs normally held away from said upper sash by said resilient block but engaging said upper sash when said lower sash is urged against said stop with great force.

5. In a window including movable upper and lower sashes and a parting strip between said sashes, a wedge-shaped stop for limiting the movement of said lower sash including a finger adapted to be positioned between the side rail of said upper sash and said parting strip for holding said stop in any desired position along said side rail, said finger being curved and having a prong thereon which is positioned to engagesaid side rail, said curved finger holding said prong in engagement with said side rail so that said stop moves with said upper sash.

6. In a window including movable upper and lower sashes and a parting strip between said sashes, a wedge-shaped stop for limiting the movement of said lower sash including a finger adapted to be positioned between the side rail of said upper sash and said parting strip for holding said stop in any desired position along said side rail, said finger being curved and havin a prong thereon, said prong being positioned on said finger so that it engages the portion of said side rail which is covered by said parting strip to thereby prevent marring of said upper sash.

ROBERT J. KASIK.

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

UNITED STATES PATENTS Number Name Date 860,470 Henderson July 16, 1907 1,111,585 Hunt Sept. 22, 1914 1,463,222 Mologne July 31, 1923

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