US919653A - Self-locking window-lock. - Google Patents

Description

T. L. THOMAS & W. D. LEWIS. SELF LOOKING WINDOW LOCK.

APPLICATION FILED 00T.22,1908.

9 1 9,653 Patented Apr. 27, 1909.

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411 to one of the frames of a window, preferably UNITED STATES PATENT OFFICE.

THOMAS L. THOMAS AND WILLIAM D. LEWIS, OF PLYMOUTH, PENNSYLVANIA.

SELF-LOCKING WINDOW-LOCK.

Application filed October 22 To all whom it may concem:

Be it known that we, THOMAS L. THOMAS and WILLIAM D. LEwIs, citizens of the United States, residing at Plymouth, in the county' of Luzerne and State of Pennsylvania, have invented certain new and useful Improvements in Self-Locking Window-Locks; and do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in th'art to whichit appertains to make and use the same.

This invention relates to improvements in looks, and particularly to window locks of the self-closing or looking variety, and has for an object the construction of a lock that is strong and durable and one that will automatically lock itself when the window is closed to which it is secured.

Another object of the invention is the arrangement of a window lock in which the housing of the moving part of the lock overhangs a short distance one of the window frames so as to positively prevent any instrument being inserted between the two frames of the window for moving the movable art of the lock.

With these and other objects in view the invention comprises certain novel constructions, combinations and arrangement of parts as will be hereinafter more fully described and claimed.

In the accompanying drawings: Figure 1 is a front view of a lock shown applied to a Window. Fig. 2 is a section through Fig. 1 approximately on line 2-2. Fig. 3 is a sectlon through Fig. 2 approximately on line 33.

In constructing the lock the same is provided with a housing adapted to-be secured the lower frame, and in this housing is arranged a reciprocating bar formed with a slot through which a hook secured to the upper window frame is adapted to pass. After the hook has passed through the slot in the reci rocating bar the reciprocating bar is forced ack by a suitable spring so as to positively hold the frame from movement, and in this way the upper window frame is prevented from being moved downward and the lower window frame is prevented from being moved upward. When it is desired to unlock the window for raising the lower frame or lowering the upper frame, all that is necessary is to press upon the reciprocating bar which is formed with a button or head for Specification of Letters Patent.

Patented April 27, 1909.

, 1908. Serial No. 459,100.

that purpose, and the same is forced longitudinally and releases the hook after which either of the frame may be moved. After either of the frames have been moved a short distance the same may be moved up and down as desired as long as both frames are not brought to a closed position which would cause the hook to pass through the slot in the reciprocating bar and become locked against the same.

In order to more clearly set forth an embodiment of the invention we have shown in the accompanying drawings a preferred form in which 1 indicates a housing constructed of any desired metal that is formed with a bent over edge 2 which permits the housing to project beyond the lower window frame 3 but does not leave any opening for the admission of a knife or other instrument from the outside into the housing, that is any instrument can not be forced between window frame 3 and window frame 4 into the housing 1. In housing 1 is mounted a reci rocating locking bar 5 that is formed with a s 0t 6 which is beveled at 7 for permitting a free entrance of a hook shaped member 8. The hook 8 is riveted or otherwise securely fastened to a plate 9 that may be countersunk on frame 4 or placed on top thereof and secured in place by any desired means as screws 10. The housing 1 is also secured in place by any desired securing means as screws 11. The reciprocating looking bar 5 passes entirely through housing 1, but as seen in Fig. 3 one end is reduced at 12 and is formed with a head 13 for affording means by which the bar may be reciprocated. Bar 5 also is formed with a notch 14; which is adapted to receive one end of a spring 15 that engages one of the side walls of housing 1 and also a notch 16 that is formed in the housing. By the action of spring 15 the locking rod 5 is normally held so that the shouldered portion 17 is normally in engagement with one of the sides of the housing 1, and also causes the end of the locking rod 5 to be positioned beneath the over-hanging portion of hook S, as clearly seen in Fig. 2. The spring 15 holds the locking rod in this position whether or not the hook 8 is in the position shown in Fig. 2, or disengaged. If the frame 3 has been raised above hook S or hook 8 has been lowered beneath frame 1 after having been unlocked the bar 5 will take the position shown in Fig. 2, and when the respective frames 3 and 4 have been brought to a closed position for closing the Window hook '8 will enter slot 6 and the beveled face 18 of hook 8 will engage the beveled face 7 and move the bar 5 longitudinally until hook 8 has taken the position shown in Fig. 2. portion of hook 8 passingb ar 5, spring 15 Wlll move bar 5 to the position shown in Figs Z and 3,;that is until shoulders 17 are in engagement with one: wall of "the housing 1, and the slotted end of the bar will be in engage ment ith the overhanging portion of hook 8.

By this construction and arrange 'n'eiit a lock is presented that is easily unlocked; namely, by the pressing in of head 13 for 'disengaging hook S'from locking bar 5, and then the respective frames "of the Window are adapted to be moved as desired, the pressure on head 13 must be maintained until hook 8 is disengaged from bar 5... hen it is desired to lockthe 'w'inc'low all that is necessary is to close the same and the lock Will automatically take a locked position.

X'Vhat We claim is: I

In a Window look, a housing adapted to be Immediately upon the over-hanging secured to a Window frame and project over the adjoining frame; said housing being formed With a turned over edge that prevents access to the interior of the housing from between said Window frame and a bent out portion for receiving the end. of a spring, a reciprocating bar formed with an eye mounted to reciprocate in said housing, a

spring fitted into the bent out portion in said

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