US1088399A - Window-sash lock. - Google Patents

Description

L. H. BRADSHAW.

WINDOW SASH LOCK.

APPLICATION TILED JUNE 27, 1913.

1,088,399, Patented Feb. 24, 1914 10 yfi g z 7 r 13 is 2 fiE- 12 13 A 5' 5 Wz'inweg: 2 H nv ejiior;

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' FlltTlE BA LEWIS H. BRADSHAW, OF SAN FRANCISCO, CALIFORNIA.

WINDOW-SASH LOCK.

To all whom it may concern Be it known that I, LEWIS H. BRADSHAW, a citizen of the United States, residing in the city of San Francisco, in the county of San Francisco and State of California, have invented a new and useful Improvement in l/Vindow-Sash Locks, of which the following is a specification.

My invention relates to an improvement in Window sash-locks, and has for its object to produce a novel and simple device of the character indicated which will be adapted to retain or fasten either one or both window sashes at any desired point, and afford a means to securely lock the sash or sashes as adjusted, either entirely open, partly open or completely closed. I attain this object by the mechanism illustrated in the accompanying drawing in which Figure 1 is a section of the casing containing the two bolts, both extended in a locked position and also a diametrical sec tion of bolt socket E. Fig. 2 is a section of the casing containing the two bolts in a retracted position. Fig. 3 is a portion of front elevation of easing. Fig. i is a section at line M N in Fig. 1. Fig. 5 is a longitudinal section and a front elevation of socket F for bolt C. Fig. 6 is a front elevation of socket E for bolt B. Fig. 7 is a longitudinal. section of connected rings 1) and b and front elevation of said rings. Fig. 8 is a view of the device applied to a window, showing sashes completely closed.

Similar letters and numbers refer to similar parts throughout the several views in the drawing. I

In detail-any invention consists of an L shaped easing A, within which are slidingly mounted two bolts, B and C, at right angles to each other, adapted to engage bolt-sockets E in the upper window sash and bolt sockets F in the window frame, respectively. Bolt B has also a rotary movement, being provided on its rear portion with longitudinal gear-teeth a to mesh with teeth d extending across flattened rear portion of bolt C and parallel with said teeth a. Rings 5 and b (which may be connected as shown in Fig. 7 to facilitate the adjustment of the parts in the manufacture of the device) are made integral parts of the inside of easing A at its rear end as shown in 1 and 2. Coil spring D encircles toe central portion of bolt B from collar 0 to ring Z) acting as a shoulder. The rear end of bolt B is insert- Specification of Letters Patent.

Application filed. June 27, 1913.

Patented Feb. 2 1, 1914:.

Serial No. 776,094.

ed through rings 5 and Z) and spring D is kept in place by and between ring 6 and collar 0. Then the flattened rear end of bolt C is inserted between rings Z) and Z) and under bolt B as shown in Figs. 1 and 2 so hat teeth (Z will mesh with t eth a. Handle or knob 2 is made an integral part of bolt B at its rear end outside of easing A at open ing 5. Lug 1 is provided on bolt B near its forward end. It is not essential however that the flattened rear end of bolt C be under bolt B. The device may be constructed so that said flattened rear end of bolt C will engage the top of bolt C, instead of engaging it underneath, teeth (Z meshing with teeth a in a similar manner. Also ring 6 and the connection between rings 6 and Z) are not essential. Bing Z) alone made an integral part of easing A, would be suiiicient.

Casing A is provided with openings 3 and 4 through which the forward ends of bolts B and C, respectively, may pass, inner recess 6 immediately to the rear of opening 3, and opening 5 through which the rear end of bolt B passes when the bolts are retracted. Said opening 3 is provided with notch 6. with an elliptical opening 7, with notch 8 and an inner recess 9. Socket F for bolt C, is thimble shaped, tapering slightly inward, and has a circular opening 10 the diameter of which is larger than that of the forward end of bolt C. Both of said sockets E and F are made as separate members, as distinguished from the holes in the window sash and frame, respectively, in which the former are inserted. Said holes are made with an ordinary bit and said sockets are inserted and jammed into them so that their outer surfaces will be flush with the sash and frame respectively. Opening 7 of socket E is made elliptical and the diameter of circular opening 10 of socket F larger than that of the forward end of bolt C, for the purpose of providing a suitable play to facilitate the locking of the bolts because of a possible faulty juxtaposition of the Window sashes and window frame.

In applying my sash-lock to a window as shown in Fig. 8 the same is placed on the top of the lower sash at one side, in a position so that the forward end of bolt B will point forward toward the upper sash and the forward end of bolt 0 will point laterally to ward the window frame. The device is fas- Socket E, for bolt B, is provided I tened to the sash by means of screws through hole 11 and flanges 12 and 13 with which casing A is provided. Thus the device will be fastened securely by means of three screws in three different directions, one from the top downward and the others from the front forward and right to left respectively. Several bolt sockets E are inserted at desired distances one above the other in the upper sash, while bolt sockets F are inserted in cor-' responding positions on the corresponding side of the window frame, asshown in Fig. 8. The device may be so constructed to be applied to either side of the window.

In operating my sash-lock, both bolts being in a retracted position as shown in Fig. 2, and bolt B being retained within the casing by means of lug 1 engaging recess 6, it is necessary to turn handle or knob 2 to enable lug l to pass through notch 6, bolt B being actuated by spring D. Bolt 13 will then be forced forward into socket E, lug 1 passing through notch S of said socket. Then by turning handle or knob 2 again, teeth a will mesh with teeth (Z, which action will simultaneously project bolt 0 to the right from the easing into socket F and cause lug l of bolt B to be retained within socket E by engaging recess 9. Thus both the upper and lower sashes will be locked.

When it is desired to lock both sashes securely, one or both being partly open, the sash-lock may be operated so that bolts B Copies of this patent may be obtained for and C will lock in sockets E and F, respectively, at points wherever the upper window sash and window frame are provided with them.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

The combination of a casing having two openings; two bolts, mounted at right an gles to each other and adapted to project through said openings; means for transmitting motion from one of said-bolts to the other, one of said bolts actuated by a spring and having both a forward and rotary movement and the other of said bolts a lateral movement; an inner recess within one of said openings; a lug provided on the forward end of one of said bolts, adapted to engage said inner recess; a bolt-socket in the window sash provided with an elliptical opening and an inner recess; a thimble-shaped boltsocket in the window frame; into which boltsockets said bolts may be respectively projected from said casing, substantially as described.

In testimony whereof, I have hereunto signed my name to this specification in the presence of two subscribing witnesses.

LEWIS H. BRADSHAW.

lVitnesses DUDLEY DAVIS, Ssvnnro NICASTRO.

five cents each, by addressing the Commissioner of Patents. Washington, D. C.

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