US 558972 A
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J. o. MEYER, :SASH LOCK.
No. 558,972. Patented Apr. 28,1896.
mllllll IN DREW B GRAHAM. PHOTULITHQWASNINGTUN. DL.
UNITED STATES i ATENT OEEICE.
JULIUS (l. MEYER, OF NEV YORK, N. Y.
SPECIFICATION forming part of Letters Patent No. 558,972, dated April 28, 1896. Appliemion Bled February 5,18% serial No. 678,102. (Nomaden) To all whom, t may concern.-
Be it known that I, JULIUs C. MEYER, of New York city, New York, have invented an Improved Sash-Lock, of which the following is a specification.
rlhis invention relates to a sashdock which is so constructed that by it the sashes may be locked when closed and also when the upn per sash is partly drawn down. Thus the 1o windows are properly protected against unauthorized opening by children or intruders and still fresh air may be admitted into the room.
In the accompanying drawings, Figure lis a face view, partly in section, of my improved sash-lock, showing the lock-case open. Fig. 2 is an end view of the sash-lock; Fig. 3, a section on line 3 S, Fig. l; and Fig. 4, a side view of the cam d.
zo The letter A represents the upper sash, B the lower sash, and C the jamb of a window. To one of the stiles of the sash A are attached vertically above one another and at suitable distances apart a number of slottedor notched plates a. Of these the lowermost plate is attached directly above the upper edge of the lower sash B, and is adapted to lock the up- Vper sash when the same is entirely closed. The other plates a are adapted to lock the 3o upper sash when the same is more or less opened.
To the jamb C there is secured opposite to the meeting-rails of the sashes a lock-case t, adapted to be closed by the plate t'. With- 3 5 in this case is pivoted at c a locking-bar o, having a hook-shaped outer end c2, which is adapted to enter the slotted plate ct and to engage the edge thereof.
The inner end of the locking-bar c is notched,
4o as at c3, and this notch is engaged bya finger d of a cam or disk d, pivoted within case Zu at d2. The cam d is provided with a facegroove d3, adapted to be engaged by a handlever or key e, that serves to revolve the cam and to thereby open or close the lock. A
spring f, bearing against the cam, holds the latter in position.
The operation of my improved sash-lock will be readily understood. When the look is to be closed, the key is inserted into a slot 5o b2 of the lock-case to engage the cam-groove and is then depressed, so as to revolve the cam downward and lower the locking-bar. (Full lines, Fig. l.) This bar will now engage that one of the plates a that is brought into alinement therewith, and thus the upper sash will be locked. The locking of the bar c is effected by means of the finger d', that projects at about right angles to the edge of e notch c3, and thus prevents the bar from be- 6o ing moved upward and either of the sashes from being raised. The lowering of the upper sash is prevented by the engagement of the upper edge of groove in plate a with the upper edge of the bill c2. If the lock is to be opened, the key is inserted and raised so as to revolve the cam upward and raise the locking-bar out of engagement with the plate a and into the upright position indicated by dotted lines, Fig. 1. 7o
It will be seen that by my invention the lock may be quickly opened or closed, and that when closed it will effectively secure the window and lock the upper sash in any one of its various positions.
Vhat I claim is* A sash-lock composed of a case adapted to be attached to a windowfframe, a lockingbar pivoted thereto and having ahook-shaped outer end and a notched inner end, agrooved 8o cam having a finger adapted to engage such inner end, a key adapted to engage the cam, and a series of notched plates secured vertically above each other to the upper sash .and adapted to be engaged by the hook-shaped end 8 5 of the locking-bar, substantially as speciiied.
JULIUS C. MEYER. Witnesses:
WILLIAM SCHULZ, F. v. BEIESEN.