US1191502A - Sash-lock. - Google Patents

Description

C; A. EMME.

SASH LOCK.

APPLICATION FILED NOV. 22. 1915.

Patented July 18, 1916.

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SASI-I-LOCK.

Specification of Letters Patent. -Patgfited July 18 1916 Application filed November 22, 1915. Serial No. 62,855.

To all whom it may concern Be it known that I, CHARLES A. EMME, a citizen of the United States, residing at Washington, in the District of Columbia, have invented new and useful Improvements in Sash-Locks, of which the following is a specification.

This invention contemplates the provision of a window sash lock which is automatically operable to engage the sash in its different adjusted positions, and adapted to be held in a fixed relation to the sash when operatively associated with the latter.

To this end the invention embodies among other features a yieldably supported locking element adapted to engage the sash for holding the latter in adjusted position, together with a single means for locking said element in fixed relation to the sash when in operative position, and for rendering the said element free to yield when the sashis being adjusted.

The nature and advantages of the inven tion will be better understood as the following description is read in connection with the accompanying drawing, the invention residing in the construction, combination and arrangement of parts as defined in the appended claims.

In the drawing forming part of this specification like numerals of reference indicate similar-parts in the several views and wherein Figure 1 is a front elevation of a fragmentary portion of a window showing the manner of applying my device thereto. Fig. 2 is a sectional view taken on line 2-2 of Fig. 1, the locking element being shown in elevation. Fig. 3 is a sectional View taken on line 33 of Fig. 1, the locking element being shown in elevation. Fig. 4 is a perspective view of a modified form of the invention. Fig. 5 is a detail view of the lock ing element. Fig. 6 is a detail view of the spring. Fig. 7 is a detail View of one form of keeper.

Referring to the drawing in detail and particularly Figs. 1 to 3 inclusive, the device constructed in accordance with my invention consists of an elongated plate 5 adapted to be secured to the window casing A in any suitable manner, preferably by means of fastening elements 6 as shown. Projecting forwardly from the plate 5 adjacent one end thereof is a pair of spaced apertured lugs 7 through the alined openings in which is slidably fitted a locking bolt 8. The bolt is yleldably supported to permit of its automatlc operation to engage the sash B as the latter is either raised or lowered, and as shown in this particular instance I employ a spring 9 consisting of a single length of resilient material having its intermediate portion looped or coiled about a rivet 10 or the like carried by the plate at a point in its length, the spring being bent to provide substantially parallel limbs 11 and 12 respectively. The limb 11 has its terminal passed through an opening in the locking bolt 8 and operates to maintain this member normally projected, while the limb 12 has a length considerably greater than the limb 11 and extends above the lugs 7, terminating to provide amanipulating portion 13 adapted to be grasped by the user in positioning the limb 12 to either permit movement of the bolt 8 or to hold the latter fixed relatively to the sash in operative position in the manner to be presently described.

In normal position the limb 12 is held under tension in spaced relation to the locking bolt 8, by being arranged behind a lug or other suitable projection 1d extending from one ofthe lugs 7, thus permitting the bolt to yield freely against the tension of the limb 11 as the sash is adjusted. In the preferred form of the invention the sash is provided with suitable openings at spaced intervals, each of which is adapted to receive a sleeve-like member 15 having associated therewith a collar or head 16 adapted to engage the outer surface of the sash. The head or collar 16 presents an inclined surface which causes a retraction of the bolt 8 as the sash is adjusted until the bolt is alined with the opening in the sash, whereupon the limb 11 operates to project the bolt into the opening, and by means of which arrangement the sash may be held in its adjusted position. Subsequentto this positioning of the parts thelimb 12 of the spring is released from behind the lug 13, and through its inherent resilient action automatically moves into a groove 17 in the bolt, and there by holds the bolt fixed relatively with respect to the sash. Manifestly the window cannot be lowered until the limb 12 of the spring is first moved out of engagement with the bolt 8, and the latter subsequently retracted from the opening in the sash. This construction provides a very eii'ective device" for the purpose intended.

Secured to the plate 5 in any suitable man-.

ner and inclosing a number of the parts including the spring, is a casing or housing 18. As shown a keeper of the type shown in Fig. 7 may be employed in lieu of the openings in the sash, and consists of a plate 19 adapted to be secured to the sash in any suitable manner preferably by means of a fastening element, such as a nail or the like (not shown) which is passed through the opening 20 in the plate. The plate is provided with an angularly disposed portion which causes the lock bolt to be retracted as the latter is brought into engagement with the plate, the upper edge of the latter being provided with a groove 21 in which the bolt is adapted to seat when the bolt is subsequently projected through the medium of the spring as will be readily understood.

of the invention which consists of a substantially U-shaped support 23, the central portion 2 1 of which is provided with openings 25 adjacent its opposite end for the reception of suitable fastening elements for se curing the support to the window casing. Slidably fitted through alined openings in the parallel portions of the support is a locking bolt 27 yieldably supported by means of a spring 29 of a construction similar to that described in connection with the preferred form of the invention. As shown the spring has its intermediate portion coiled about a rivet 30 fixed upon the support, and formed to provide the substantially parallel limbs 31 and 32 respectively. The terminal of the limb 31 is associated with the bolt, while the limb 32 extends above the support and terminates to provide a manipulating portion 33 to move the limb 32 into and out of operative association with the bolt in the manner to be presently described. One of the parallel portions of the support is formed at its upper edge to provide spaced notches 34 and 35 respec tively. Now it will be obvious that when the manipulating portion of the limb is arranged within the notch 34., the limb is held in spaced relation to the bolt thereby permitting the latter to slide relative to the support so as to automatically engage the sash when the latter is adjusted. Subsequent to the operative association of the bolt with the sash the limb 33 is moved into the notch 35, and also into a groove 36 in the bolt, thereby locking the latter against movement. It might here be stated that the various parts of bolt devices hereinabove In Fig. 4 I have shown a modified form I described may be constructed from any suitable material and desired dimensions.

While I have shown and described certain forms of the invention I desire to have it understood that various changes in the construction and arrangement of parts may be resorted to when desired as fall within the scope of the appended claims.

\Vhat is claimed is 1. A device of the class described comprising a support, a locking element slidably mounted thereon, a spring fixed upon the support and having branch portions, one of said portions being associated with the element to yieldably support the latter, the other of said branches being adapted to cooperate with said locking element to hold the latter fixed relatively to the support, and means for holding the latter mentioned branch in inoperative position.

2. A device of the class described comprising a support, a locking element slidably mounted thereon, a spring fixed upon the support and having branch portions, one of said branches being associated with said element to yieldably support the latter, the other of said branches being adapted to be received within a groove in said element on a predetermined position of the latter, to hold said element fixed relatively to said support, and means for holding the last mentioned branch in inoperative position, whereby said element is free for sliding movement.

3. A device of the class described comprising a substantially U-shaped support, a

ocking element slidably mounted through openings in the parallel portions of the support, one of said parallel portions having spaced notches in its upper edge, a spring fixed upon the support and having relatively movable branches, one of said branches being associated with said element to yieldably support the latter, the other of said branches being adapted to engage said element and be moved into one of said notches to hold said locking element fixed in I fiopies of this patent may be obtained for five cents each, by addressing" the Commissioner of Patents,

- Washington, D. C.

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