US2931676A - Window lock - Google Patents

Description

April 1960 o. L. WROUGHTON 2,931,676

WINDOW LOCK Filed July 30, 1958 INVENTOR.

A 7'7'ORNE Y6.

Oliver L Wmughfon.

United States Patent O This invention relates to a locking device and more particularly to a lock for attachment to the upper sash of a window to prevent'or limit movement of the lower 2,931,676 Patented Apr. 5, 1960 tion will hold the locking plate from interfering with the lower window sash.

Fig. 7 is a perspective view of the lock shown in locked position with the lower window sash engaging the stop megiber to limit or prevent further opening of the lower sas Fig. 8 is a perspective view of a modified form of the locking apparatus with the keeper portion having a side extended to prevent the locking plate from interfering with the lower window sash. v:-

Referring more in detail to the drawings:

1 designates a locking device embodying the features of my invention shown attached to the upper window sash 2 of a window casing 3, and 4 designates the lower sash of the window both sashes being slidable in the casings as is the usual practice.

sash with respect thereto, and which will allow the lower sash to be raised when the lock is in unlocked position.

It is the principal object of the present invention to provide a device which may be fastened to the side member of a sash of the upper window whereby the lower window sash will strike against a portion of such device to prevent or limit raising thereof and when the window is desired to be opened the locking portion can be moved and the lock transformed to allow passage of the lower sash past the device to open the window to the fullest extent and the lock will allow free movement of the lower sash at all times the lock is unlocked.

Other objects of the present invention are to provide a body fastened to the side member of the upper window sash and having a plate or keeper hingedly connected The locking device has a body member 5 having a plurality of openings 6 for securing the same to the window sash 2 by screws or the like 7. Upper edge 8 of the body is provided with a bearing portion 9 for cooperating with bearing portions 10 on a plate or keeper 11 for receiving a pin 12 for hingedly connecting the keeper 11 to the body 5 so that the plate may swing in axial or vertical alignment with the body as later described.

The side edge 13 of the body is provided with a bearing portion 14 cooperating withbearing portions 15 on one side edge of a locking plate 16 hingedly connected to the body by a pin 17 so that the locking plate may swing transversely relative to the body 5. The outer side edge 18 of the locking plate has a bracket 19 turned laterally of the body of the locking plate and is provided thereto and swingable in a vertical position to allow the I with an opening 20 for a purpose later shown. The lower edge 21 of the locking plate is turned laterally outwardly in the same direction of the bracket 19 as indicated at 22 and then folded backwardly upon itself as designated at 23 forming a stop 24 to prevent or limit upward moveglass of. the upper sash when in unlocked position; to

provide means for holding the locking plate in open position to prevent interference with the lower window sash when in open position so that it may be lowered without contact with the locking device; to provide a stop member on the locking plate whereby the upper face of the lower window sash will contact the same to prevent or limit raising of the lower sash when the device is in locking position; to provide the vertically swinging plate or keeper member with a slot engaging over a bracket on the locking plate; to provide means for engaging the bracket for locking the device in window sash stopping position, and to provide a device of this character simple and economical to manufacture.

In accomplishing these and other objects of the present invention, I have provided improved details of structure, the preferred form of which is illustrated in the accompanying drawings, wherein:

Fig. 1 is a perspective view of my invention detached from a window sash.

Fig. 2 is a front view of the device shown in closed position.

Fig. 3 is a cross sectional view taken on a line 3--3, Fig. 2.

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

Fig. 5 is a cross sectional view taken on a line 5-5, Fig. 6, particularly illustrating the stop mechanism on the locking plate to prevent swinging of the plate to contact the lower sash when the lock is in unlocked position.

Fig. 6 is a perspective view of the lock shown attached to the window in unlocked position so that the stop porment of the lower sash 4 of the window as illustrated in Fig. 6 when the device is in locking position.

In operation of a locking device constructed and assembled as described with the body 5 attached to the window sash 2 the locking plate 16 may be rotated on the hinge pin 17 so that it will lie over the body member 5 as best illustrated in Fig. 4. The keeper 11 is then turned downwardly over the locking plate 16 and the keeper is provided with a slot 25 with said slot passing over the bracket 19 so that the bracket will extend therethrough. A lock 26 is provided for engaging in the opening 20 of the bracket 19 to hold the locking plate and keeper in assembled relation and the stop 24 extends outwardly therefrom over the top 27 of the lower window sash as illustrated in Fig. 7. The locking plate is substantially one-half the width of the body and plate 11 so that the bracket 19 will be in alignment with slot 25 in plate 11. The body 5 is placed on the upper window sash in any desired position depending on the desired height the lower sash 4 is to be moved upwardly relat-ive to the upper sash.

When it is desired to raise the lower sash past the locking member upwardly an unlimited amount, the lock 26 which may be of any size, such as Yale or the like, is removed from the bracket 19, the keeper 11 rotated and swung upwardly in axial alignment with the body 5, the locking plate 16 is then turned transversely to the body 5 so that it will extend outwardly in alignment therewith out of the way of the lower window sash so that it may move freely upwardly the desired distance.

In order to prevent accidental rotation of the locking plate so that it will not interfere with the lower sash when an unlocked position is desired, I provide the upper bearing portion 15 on the locking plate with a lug 29 extending outwardly from the bearing portion so that when flat against the body 5, the lug 29 will pass through the I cut-out portion 28 of the body and then extend out wardly as shown in Fig. 2. When the locking device is in open position the keeper 11 may be rotated to lie flat against the body portion 5 and the lug 29 will engage against the side edge 30 of the keeper as indicated at 31, Fig. 5, to act as a stop and to prevent the locking plate from swinging into the path of the lower window sash 4 when it is desired to raise or lower the same.

In the form of the invention shown in Fig. 8, the plate or keeper 11 has its side edge 32 extended to form a stop portion 33 for the locking plate 16 when the device is in an unlocked position. With this form of invention when the keeper is removed from over the locking plate and the locking plate extended in alignment with the body 5 as shown in Fig. 8, the keeper 11 is then rotated on its hinge to lie fiat over the body portion and locking plate so that the stop or extended portion 33 will prevent further outward turning of the locking plate 16 so that it will be prevented from interfering with the top portion 27 of the lower sash 4 when the lower sash is being moved upwardly and downwardly when the lock is in unlocked position.

It will be obvious from the foregoing that I provide an improved window lock and particularly one to act as a stop for the lower sash so that the window may be raised to allow air to enter the room but still lock the window against further opening and prevent burglary or other entries through the window, and I have further provided a device that will not interfere with the lower sash when it is in-an unlocked position. While I havehere shown :1 lug 29 on the upper bearing portion of the locking plate 16 as merely being welded thereto, other means of forming the lug on plate 16 may be utilized without departing from the spirit of my invention.

My device may be utilized for use with movable objects other than window sashes, the foregoing merely being by way of illustration and not limitation.

What I claim and desire to secure by Letters Patent is:

l. A device for limiting upward movement of a lower sash of a window comprising, a body having an upper edge and a side edge, a locking plate hingedly connected to said side edge for engaging over said body when in locking position, a keeper hingedly connected to the upper edge of said body for engaging over the locking plate, said keeper having a slot therein, a bracket on said locking plate for engaging through said opening in said keeper, means for retaining said keeper in engagement with said locking plate and stop means on said locking plate for engaging said lower window sash.

2,931,676. I i r 2. The device as specified in claim 1 in which the locking plate includes means cooperating with said keeper to hold the locking plate in alignment with the body when the keeper is in unlocked position.

3. A device for limiting movement of the lower sash of a window with respect to the upper sash having a side member comprising, a body having upper, lower and side edges, means for securing the body to the side member of the upper sash in spaced relation to the lower sash, a plate member hingedly secured to one edge of the body for swinging in axial alignment therewith, said plate member having a slot in vertical alignment with said body, a stop plate hingedly connected to one side edge of said body, said stop plate having a bracket on one side edge for extending through the slot in said plate, stop means on the lower edge of said stop plate for engaging the lower sash to limit upward movement of said sash, and means engaging said bracket on the stop plate to .hold the plate and stop plate inv folded position with the stop means extending outwardly over the lowerfsash.

4. The device as specified in claim 3 in which the locking plate includes means cooperating with said keeper to hold the locking plate in alignment with the body when the keeper is in unlocked position.

5. A device for limiting upward movement of a lower sash of a window comprising, a body having an upper edge and a side edge, a locking plate hingedly connected to said side edge, a keeper hingedly connected to the upper edge of said body for engaging over the locking plate to hold the same in locking position, stop means on said locking plate for engaging said lower window sash; and means on the locking plate cooperating withxsaid keeper to hold the locking plate in alignment with the body when the keeper is in unlocked position.

6. A device for limiting upward movement of a lower sash of a window comprising, a body having an upper edge and a side edge, a locking plate hingedly connected to said side edge, a keeper hingedly connected to the upper edge of said body for engaging over the locking plate, means on the locking plate cooperating with the keeper to hold the plate in locking position, stop means on said locking plate for engaging said lower window sash, and means on the locking plate cooperating with said keeper to hold the locking plate in alignment with the body when the keeper is in unlocked position.

Gillen May 23, 1916 Burhenne June 4, 1929

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