US2755654A

US2755654A - Casement window lock

Info

Publication number: US2755654A
Authority: US
Inventors: Charles N Valentine
Original assignee: Individual
Current assignee: Individual
Priority date: 1952-08-18
Filing date: 1952-08-18
Publication date: 1956-07-24
Anticipated expiration: 1973-07-24

Description

y 1956 c. N. VALENTINE CASEMENT WINDOW LOCK Filed Aug. 18, 1952 INVEN TOR. CHARLES N. VALENTINE AGENTS CASEMENT WINDOW LOCK Charles N. Valentine, San Diego, Calif.

Application August 18, 1952, Serial No. 304,983

4 Claims. (Cl. 70-89) The present invention relates generally to a casement window lock and more particularly to a casement window lock incorporating a key which may be used to pull windows into closed position, as well as for operating the lock.

The primary object of this invention is to provide a casement window lock including a key engaging with said lock to pull windows into position for locking.

Another object of this invention is to provide a casement window lock of the type described which is adaptable to all types of single or double casement windows.

Still another object of this invention is to provide a casement window lock of the type described which may be used to replace existing window locks without structural modification of the window.

Another object of this invention and this disclosure, ancillary to the immediately preceding object, is to teach the best known mode of carrying the invention into actual practice.

Another object of this invention is to provide a casement window lock which is adapted for fabrication from many different materials, so that the choice of material can be according to the dictates of availability and price considerations, the exact sizes and proportions being matters easily determined to suit particular conditions and needs.

Finally, it is an object to provide a casement window lock of the aforementioned character which is simple, safe and convenient to operate, and which will give generally efficient and durable service.

With these and other objects definitely in view, this invention consists in the novel construction, combination and arrangement of elements and portions, as will be hereinafter fully described in the specification, particularly pointed out in the claims, and illustrated in the drawing which forms a material part of this disclosure and wherein similar characters of reference indicate similar or identical elements and portions throughout the specification and throughout the views of the drawing, and in which:

Fig. 1 is a perspective view of a lock unit and a key;

Fig. 2 is a front elevation view of a lock assembly applied to a double casement window;

Fig. 3 is a side elevation view of the lock assembly illustrated in Fig. 2;

Fig. 4 is a fragmentary perspective view of the key being used to close the windows through an access panel in a wire screen; and

Fig. 5 is a fragmentary front elevation view of a lock assembly applied to a single casement window.

Referring now to the drawing in detail, Fig. l of the drawing shows a lock unit generally indicated by the numeral comprising a back plate 12 on which a latch 14 is pivotally mounted by means of an integral shaft 16. A key, generally indicated by the numeral 18, and comprising a tube and a handle 22, engages with a radially extending pin 24 carried by the shaft 16 by means of a T-slot 26 in the tube 20.

2,755,654 Patented July 24, less A lock assembly applied to a double casement window is illustrated in Fig. 2. The lock unit 10 is secured to the frame of one window sash 28 by means of screws 30 passing through holes 32, and engages with a striker plate 34 secured to the frame of the other window sash 36 in a manner similar to that described for lock unit it).

The windows are further secured by means of a bolt 38 vertically slidably fastened to the window 28 adjacent to the lock unit It} by means of one or more guides 49, and engaging in a hole 48 in the upper window jamb 50, its travel being limited by a screw 42 in the slot 44. The lower end of the bolt 38 contains a slot 46, shaped to enable the latch 14 to engage the bolt for moving the bolt upwardly into locking position or downwardly into inoperative position. Bolt 38 may be used on single casement windows or may be deleted entirely.

A lock assembly applied to a single casement window is illustrated in Fig. 5. The lock unit 10 is mounted on the movable sash 52 of the window in a manner similar to that previously described, and engages with a flat striker plate 54- secured to the window jamb 56. Bolt 38 may be used on single casement windows also.

In the event that a screen is fitted inside the window, access may be had to the lock by making a hole of suitable size in the screen by means of an ice pick or reamer, thus eliminating the possibility of breaking the wires of the screen, and attaching an access panel or insect guard as indicated at 58 in Fig. 4. To lock a window, the window sections or sashes are first swung by means of the usual existing operating mechanism, not illustrated in the drawing, until they reach an ajar or nearly fully closed position. At this point, if the windows are even very slightly swollen, warped or incorrectly aligned, it is difficult to close them tightly due to the fact that the force exerted by the operating mechanism is usually insufficient. The construction of the lock unit and key described in this invention enables the operator to engage said key with said lock unit and to exert a pull at or near the center of the window, thus providing for application of sufficient force at the most advantageous point to assure complete closure of the sashes, the locking of the sashes being thereafter accomplished with facility. In the event that the lock unit is used with a single casement window at which a screen is fitted, access to the lock may be had by a method similar to that previously described or, if necessary, by means of a hole drilled in the stile of the screen.

The operation of this invention will be clearly comprehended from a consideration of the foregoing description of the mechanical details thereof, taken in connection with the drawing and the above recited objects. It will be obvious that all said objects are amply achieved by this invention.

Further describtion would appear to be unnecessary.

It is understood that minor variation from the form of the invention disclosed herein may be made without departure from the spirit and scope of the invention, and that the specification and drawing are to be considered as merely illustrative rather than limiting. For example, the lock unit may be constructed in a slightly modified form without altering the method of operation. The collar portion 60 of the latch 14 may contain a recess into which a pin similar to pin 24 extends. This modified lock unit may be used with a key similar to the key 18 but of suitable dimensions to fit inside the recess in the shaft and to engage with the pin therein in a manner similar to that previously described. It is also conceived that the bolt 38 can be spring biased upwardly to prevent its dislodgement due to vibration of the window.

I claim:

1. Locking means for a casement window structure having a sash and a striker plate, said locking means cornprising; a latch for pivotal mounting on a sash for engagement with a striker plate, said latch having a shaft extending at right angles thereto, a projecting pin on said shaft, a combination hook and key having a hollow cylindrical portion with a T-shaped slot therein detachably engageable with said pin for pulling the sash into closed position and for pivoting said latch to lock a sash in closed position, means for locking the adjacent structure when said adjacent structure is a second sash, said last mentioned means including a bolt vertically slidably mountable on the first mentioned sash and having a deformation therein engageable by said latch, whereby the bolt can be shifted into locking engagement with fixed structure such as an adjacent window jamb.

2. Locking means for a window structure having a jamb with a pair of window sashes and a striker plate, comprising a latch, means for mounting the latch on one of a pair of sashes and for engagement with a striker plate mounted on the other of said sashes, a combination hook and key engageable with said latch for pulling the first mentioned sash into closed position and pivoting the latch to lock the first mentioned sash in closed position relative to the second mentioned sash, a locking bolt, means for reciprocably mounting said bolt on the first mentioned one of said sashes, said bolt having a deformity engageable by said latch for throwing the bolt into and out of engagement with a jamb.

3. Locking means comprising a back plate, a latch pivoted on said plate, a striker plate engaged by said latch in one position of the latch, a locking bolt, means to mount said bolt for reciprocative movement, said bolt having a deformity engaged by said latch in a second position of said latch, said latch comprising means operating said bolt as said latch travels toward and away from said striker plate.

4. Locking means comprising a back plate, a latch pivoted on said plate, a striker plate engaged by said latch in one position of the latch, a locking bolt, means to mount said bolt for reciprocative movement, said bolt having a deformity engaged by said latch in a second position of said latch, said latch comprising means operating said bolt as said latch travels toward and away from said striker plate, a combination hook and key for engagement with said latch, said latch having a cylindrical stub portion and a pin extending radially thereof, and said combination hook and key having a hollow portion engageable with said cylindrical stub portion and having a slot to engage said pin, whereby the latch can be pulled and turned by said combination hook and key.

References Cited in the file of this patent UNITED STATES PATENTS 388,229 Thode Aug, 21, 1888 1,104,274 Re July 21, 1914 1,437,364 Schmick NOV, 28, 1922 1,503,393 Twardowsky July 29, 1924 1,652,548 Wensel Dec. 13, 1927 2,515,507 Glitsch July 18, 1950 FOREIGN PATENTS 91,502 Switzerland Nov. 1, 1921