US613570A - Sash-lock - Google Patents

Description

No. 6l3,570. Patented Nov. I, I898. P. H. HOLMES.

I SASH LOCK.

(Application filed Nov. 16, 1897.)

(No Model.)

LVITNESSES IN VEN TOR A tlorm rrrcn.

PHILIP HENRY HOLMES, OF GARDINER, MAINE.

SASH-LOCK.

SPECIFICATION forming part of Letters Patent No. 613,570, dated November 1, 1898.

Application filed November 16, 1897. Serial No. 8,746. (No model.)

To aZZ whom it may concern.-

Be it known that I, PHILIP HENRY HOLMES, a resident of Gardiner, in the county of Kennebec and State of Maine, have invented cer tain new and useful Improvements in Sash- Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in sash-locks, the object of the invention being to provide a simple, cheap, attractive, durable, and efficient device for looking a sash in its closed position or to hold it at any desired elevation.

A further object is to so construct the device as to operate an alarm in case any attempt is made to raise the sash from the outside.

A further object is to construct the device in such manner as to prevent the sash from rattling.

A further object is to construct the device in such manner that it can be applied to any window without liability of causing binding of the pivotal parts.

A further object is to provide means whereby my improved lock can be readily and quickly applied to a Window-sash and as easily removed therefrom.

WVith these objects in view the invention consists in certain novel features of construction and combinations and arrangements of parts, as hereinafter set forth, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view illustrating my improvements removably attached to a sash. Fig. 2 is an inner or rear face View. Figs. 3, 4, 5, 6, and 7 are detail views.

A represents a plate, preferably made of sheet metal and ornamental in appearance and provided at its ends with perforated ears 1 1, which are so bent as to cause the body portion of the plate to be offset, so as to form, in effect, a casing for the reception of the working parts of the device. One edge of the body portion of the plate or casing is bent up to form a flange 2, the ends of which are bent inwardly over said plate, as at 3 3.

Within the casing A a block 4:, of wood,

' lugor car 15.

leather, or other suitable material, is placed and adapted to form a rest or base for two arms 5 6, which are pivotallyattached thereto and to the plate or casing A by means of a fixed pin 7. A U-shaped spring 8 is placed between the block 4 and flanges 2 3 and is held in place by said block. The spring is provided at its free ends with lugs 9, adapted to engage the arms 5 6 and tend to press the forward ends thereof toward each other, so as to cause friction-blocks 10, of rubber or simi lar material, carried by said arms, to engage the window-casing when my improvements are attached to the sash or to cause said friction-blocks to engage the sash when my improved lock is attached to the casing.

Each arm 5 6 is preferably made of sheet metal, having its rear end bent to form a thumb-piece 11. The forward end of each arm v5 6 is bent at right angles to form a seat 12 for a block 10, of rubber or similar material, which will exert a frictional resistance when pressed against a cooperating surface. The forward end of each arm is also provided with lugs or projections 13, which are bent so as to be disposed at diametrically opposite edges of the seat 12 and to project beyond the face of said seat, whereby to form lips 1+1, adapted to engage the diametrically opposite edges of the rubber block. One or both lugs or projections 13 will preferably be provided with small holes for the reception of small pins or projections on the edges of the seat 12, whereby to securely hold these parts together. The arm or lever 5 is provided at a point between its ends with a laterally-projecting lug 15, which is offset slightly and disposed in a shallow recess 16 in the face of block 4, and the arm or lever 6 is made with a laterallyprojeeting lug or ear 17 to be disposed on the Both of said lugs, or each, 15 and 17 are perforated for the passage of the fixed pin 7, which constitutes the fulcrum of said arms or levers. When the parts are thus assembled, the ends of the fixed pin 7 will preferably be upset, so as to permanently connect the movable parts within the casing A, and thus avoid any liability of causing the binding of these parts when the device is applied to a window, as would be the case if a screw were used for the fulcrum of the arms or levers and adapted to be tightened by the user when the device is being applied to the window.

My improved lock may be applied to the sash, so that the rubber blocks will engage the window-frame, or it may be applied to the frame, so that the blocks will engage the sash. It will probably be found more desirable, however, to apply it to the sash.

hen attaching the device to a sash, the thumb-pieces 011 the arms or levers should be first pressed toward each other, so as to cause the rubber blocks to recede, and then the device will be secured in position by screws passing through the ears 1 1, so that the rubber blocks will not exert any f ricticnal resistance against the window-frame. The device having been attached to the sash, the thumbpieces will be released, whereupon the spring 8 will cause said rubber blocks to be pressed against the window-frame. Both arms 5 and 6 having a common fulcrum and projecting therefrom in different directions, it will be seen that any effort to move the sash in either direction will cause one or the other of the arms or levers to tend to turn, and thus more forcibly press the rubber block against the frame, thus rendering impossible any appreciable movement of the sash. lVhen the sash is down to its full extent and an effort is made to raise it from outside the window, there will be a slight movement of the arms or levers on their fulcrums, due to the elasticity of the rubber blocks, and this slight movement will be utilized to operate an alarm-bell 20. The bell 20 will preferably be of such a type as employ a continuously-operating ringing mechanism provided with a trip, and this trip will be connected with one of the arms or levers of my look by means of a suitable connection 21, so that when an attempt is made to raise the sash from outside the window the alarm mechanism will be released and made to continuously operate to ring the bell.

I have not shown the details of the alarm mechanism, nor do I deem it necessary to describe the same, as any alarm of the character described now on the market will suffice.

My improved device not only serves to lock the window-sash in a closed position or hold it in any desired elevated position, but it also serves to prevent the sash from rattling and is therefore well adapted for use with carwindows.

If the sash to which the lock is applied is very loose in the window-frame, it may be found advantageous to attach a single arm 22, constructed in a manner similar to the arms or levers 5 6 and provided with a rubber block, to the sash at the side thereof opposite to that to which the lock is attached. I

While my improved lock may be secured directly to the sash when it is desired for permanent use, still I prefer to provide means whereby the device can be temporarily attached to a sash-for instance, to a hotel-Window. For this purpose the lock may be secured to a clamp consisting of a plate 23, having parallel flanges 21- 25 at its upper and lower edges, with the bell located on the upper flange. A thumb-screw 26 passes through the lower flange 25 and has a plate 27 swiveled to its upper end, said plate being adapted to engage the under face of the rail of the sash, while the flange 24: engages the top of said rail, and thus the whole device will be securely clamped to the rail of the sash, but can be readily removed therefrom.

Slight changes might be made in the details of construction of my invention Without departing from the spirit thereof or limiting its scope, and hence I do not wish to limit myself to the precise details herein set forth.

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

1. In a sash-lock, an arm made of sheet metal bent at right angles at one end to form a seat, lugs bent up against the opposite edges of said seat and projecting beyond the same to form lips, and a yielding block placed between said lips on said seat, substantially as set forth.

2. In a sash-lock, the combination with a plate or casing, of two levers having a common pivotal connection thereto, one end of each lever being made with a thumb-piece, yielding blocks at the forward ends of said levers, a spring bearing against said levers and a block between said levers and plate or casing and holding said spring in place, substantially as set forth.

3. The combination with a plate or casing, of a lever pivotally attached thereto, a yieldin g block carried by said lever and adapted to look a sash; an alarm and a connection extending from said alarm directly to said 1ever, substantially as set forth.

a. The combination with a clamp adapted to be removably attached to a sash, of a sashloek secured to said clamp, an alarm also attached to said clamp and a connection extending from said alarm directly to the sash-lock, substantially as set forth.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

PI-IILIP HENRY HOLMES. lVitnesses:

ANNIE E. I-IoLMEs, O. P. AUsTIN.

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