|Publication number||US937348 A|
|Publication date||Oct 19, 1909|
|Filing date||Aug 20, 1909|
|Priority date||Aug 20, 1909|
|Publication number||US 937348 A, US 937348A, US-A-937348, US937348 A, US937348A|
|Inventors||George D Wheelock|
|Original Assignee||George D Wheelock|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (3), Classifications (2)|
|External Links: USPTO, USPTO Assignment, Espacenet|
G. D. WHEELOGK.
APPLICATION FILED AUG. 20, 1909..
Patented (mm, 1909.
.a mu l l l l. 8
A v u GEORGE D. WHEELOGK, OF CLEVELAND, OHIO.
Specification of Letters Patent.
Patented Got. 19, 1909.
Application filed August 20, 1909. Serial No. 513,838.
vide a sash fastener that will be simple, but effective, and one that cannot be operated from the outside.
A further object of the'inventionis to provide a means for automatically locking the window sash by the act of closing it and without any further adjustment of the fastener; and with these and minor objects my invention consists of the parts and com bination of parts as will be more fully hereinafter pointed out.
In the drawings Figure l is a top plan View of a sash fastener embodying my invention. same on the line 2 2 Fig. 1. Fig. 3 is a similar view with the parts in unlocked position. Fig. 4 is an end elevation of the keeper and associated parts. Fig. 5 is an end view of the locking bolt and associated parts.
1 represents the keeper frame of any approved construction and provided with a cut away portion 2 in its top wall. 7
3 is a drop latch pivoted at 1 in the keeper frame and provided with a seat 5 near its inner end in which is seated a coiled spring 6, the other end of the spring being seated on the under face of the top of the keeper frame around a lug 7. The outer end of the drop latch is provided with a lip 8 to be hereinafter referred to.
10 is the locking bolt frame, carried on the lower sash and provided with an elongated slot 11 in its top wall.
12 is the locking bolt, provided with a projecting end 13 extending through an opening in the front wall of the locking bolt frame. A spring 14 is coiled around the projecting end 13 and seated at one end against the locking bolt and at the other end against the front wall of the frame 12.
15 is a thumb screw secured in the locking bolt 12 and passing through the elongated slot in the top wall of the keeper frame. This thumb screw is adapted to be clamped down on the top of the frame 12 and thereby lock the locking bolt either in an unlocked or a locked position,'and it is also a means Fig. 2 is a sectional view of the -vided with a dovetailed slot 16 in which is slidably mounted a locking slide 17 which is provided on its under face with a lug 18 which operates in the dovetail slot and limits the downward movement of the locking slide by engaging with the shoulder 19 formed in said slot. The upper face of the locking slide 17 is provided with a rib 20 which is constructed to be engaged by the lip of the drop latch.
The operation is as follows: In Fig. 3 the drop latch 3 is shown tipped to its lower position and the locking bolt is moved slightly backward. The parts are in this position just after the window sash has been closed and the drop latch is about to wing into engagement with the slide 17. To go back a little farther in the operation, we will assume that the lower sash is being pulled down, carrying the locking bolt with it, this engages the drop latch tipping it until its inner endstrikes the upper wall of the keeper frame, as shown in Fig. 3. By a further movement of the sash the drop cams the locking bolt backward as shown in Fig. 3. The sash has now reached the end of its movement, the spring 6 moves the drop latch on its pivot, which latch moves the slide 17 out of its way. The spring 14 forces the locking bolt forward until the lip on the drop latch engages the rib on the top of the slide 17 whereupon the locking bolt is firmly locked. If it is desired to still further secure the locking bolt against move ment the thumb screw 15 is screwed down tight. In this manner the locking bolt may also be locked in its unlocked position.
1. In a window sash lock the combination with a keeper, of alocking bolt and a slidable member on said bolt constructed to engage the keeper.
2. In a window sash lock the combination with a keeper of a slidable locking bolt, and a slidable member on said bolt constructed to engage the keeper and means to lock the locking bolt in its locked and unlocked position.
3. In a window sash fastener, the combination with a keeper and a drop latch pivotally mounted therein, of a locking bolt and slidably mounted member on the bolt constructed to engage the drop latch.
4. In a Window sash fastener, the combination With a drop latch, of a slidable bolt and a member slidably mounted on said bolt constructed to engage the drop latch.
5. In a window sash fastener, the combination with a drop latch of a locking bolt, and a member slidably mounted on said bolt constructed to engage the drop latch.
. 6. In a Window sash fastener, the combination with a drop latch, of a locking bolt, and a member slidably mounted on said bolt and constructed to engage the drop latch, and means to lock the locking bolt in a locked or unlocked position.
7. In a Window sash fastener, the combination With a drop latch, of a locking bolt, a spring to impel said bolt, a member slidably mounted on said bolt and constructed to engage the drop latch, and means to lock the bolt in its locked or unlocked position.
8. In a sash fastener, the combination With a keeper, a drop latch mounted therein, a spring to maintainsaid latch in a normal position, of a slidably mounted locking bolt,
a spring to keep said bolt in normal extended position, a member slidably mounted on said bolt and constructed to engage said drop latch.
9. In a sash fastener, the combination with a keeper frame, a drop latch pivotally mounted therein, a spring seated on said latch and bearing against said frame, of a locking bolt frame, a locking bolt slidably mounted therein, a shank extending from said bolt, a spring coiled around said shank, a combined operating and locking member secured to said locking bolt, and a locking slide slidably mounted on said locking bolt and constructed to engage the said drop latch.
The foregoing specification signed at Cleveland O. this seventh day of October, 1908.
GEORGE D. \VIIEELOCK.
In presence of two witnesses- LENA BECHTOLD, JOSEPHINE KRoEoKEL.
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