US2016196A - Sash fastener - Google Patents

Description

Oct., l, 1935.` Al HANDHELD 2,016,196

SASH FASTENER Filed DeG. 31, 1954 l HI l1 w o i" l5 y@ hmm :1' 15 f 11 /WW @vada/'f Patented oct. 1, 1935 UNTTED STATES PATENT OFFICE Application December 31, 1934, Serial No. '759,830 In Canada January 2, 1934 4 Claims.

The present invention pertains to a novel sash fastener, or a device for locking a sash to another sash or to a xed member in a window of the sliding sash type.

The principal object of the invention is to provide such means accessible and operable only from the inside of the window, so that a partially opened window cannot be further opened from the outside to permit unauthorized entry into the building. Another object is to provide such a device which is partly automatic in its operation.

More specifically, the invention embodies a locking pin slidable transversely in a movable sash and adapted for locking engagement with another sash. The pin is rotatable as well as slidable and carries a cam adapted for co-operation with another cam i'ixed in the sash. By means of a lever and chain, the pin may be rotated to effect a spreading of the cams and thereby a retraction of the locking pin from the other sash.

The turning mechanism involves a pair of ratchets, one of which winds a spring when turned in the driving direction. Consequently, When the driving movement is stopped, the spring unwinds and turns one of the ratchets idly over the other. At the same time, the cam on the pin also turns, and another spring acting on the locking pin, draws the two cams together and thereby projects the pin again into locking position.

The invention is fully disclosed by way of example in the following description and in the accompanying drawing in which Figure 1 is a vertical section through a pair of window sashes equipped according to the invention;

Figure 2 is a detail elevation corresponding to Figure 1;

Figure 3 is a detail vertical section in a plane at right angles to Figure l;

Figure 4 is a section on the line 4 4 of Fig. 3;

Figure 5 is a detail section in the same plane as Figure 1, showing the device in released position;

Figure 6 is a similar section showing the device in locking position; and

Figure 7 is a detail plan section showing the locking plate.

Reference to these views will now be made by use of like characters which are employed to designate corresponding parts throughout.

In Figure 1 are shown a pair of sashes I and 2 of a conventional sliding sash window. Oce

of the sashes, preferably the upper sash, is formed with an opening 3 drilled transversely through its frame. Into this opening is driven a tube 4 having prongs 5 struck outwardly therefrom so that the tube cannot be pulled out of the 5 opening. A locking pin or stem 6 is slidably mounted in the tube and carries near its outward end a iiXed collar l. Directly behind this collar, the stem is surrounded by a compressed spring 3 engaglo ing the collar and also the adjacent end of the tube 4.

The outer end of the tube d is beveled at 9, and adjacent thereto is a complementary beveled cam I0 formed integral with the stem 15` The cam is also formed with a collar II having a ratchet I2 facing inwardly.

Adjacent to this member, another collar I3 is rotatably mounted on the inner end of the stem (i and is formed with a ratchet face I4 adapted 20 to enga-ge the aforementioned ratchet face I2.

A lever I5 extends laterally from the collar I3 for operating purposes as will presently appear.

A compressed coil spring I6 surrounds the outer extremity of the stem 6 and bears against 25 the collar I3, tending to hold the ratchet faces in engagement with each other. This spring has one end secured to the member 6 and the other end to the collar I3. The adjacent end of the member 6 is flattened at II or keyed into 30 engagement with the end of collar I3 to prevent the parts from slipping off.

A cap I8 covers the parts exposed at the inner face of the sash 2 and is secured to the latter by suitable fastening devices I9, as shown more 35 clearly in Figures 2 and 3. The cap has a slot 20 through which a lever I5 projects and in which said lever is adapted to move. Finally, a chain or cable 2l hangs from the free end of the lever I5 and is of such length as to be easily reached re- 40 gardless of the position of the sash 2. A vertical plate 22 is secured to the sash-I directly opposite the outer end of the locking pin 6 and is formed with a vertical series of apertures 23 adapted to selectively receive the pin 6 and thereby deter- 45 mine the vertical adjustment of the sash 2.

In the operation of the device, assuming that the sash 2 is locked as in Figures 1 and 6, the lock is released for a new adjustment by first pulling on the chain 2 I. The cam I Il obviously turns with 50 the two ratchets I2 and I4 controlled by the lever I5 and is retracted by reason of .its rotation against the xed beveled end 9 of tube 4, to the position shown in Figure 5. The locking pin 6, being integral with the cam IU, is retracted from the lock- 55 ing plate 22, as also shown in Figure 5, whereupon the sashes l and 2 may be readjusted relatively to each other.

The new adjustment is secured merely by pulling again on chain 2|. The spring I S having been wound by pulling the chain, has brought collar i3 to its former position. The sliding movement of the locking pin takes place under the action of the compressed spring 8 which expands from the position shown in Figure 5 Vto that shown in Figure 6 when the cam is permitted to approach the beveled face 9.

Although a specific embodiment of the invention has been illustrated and described, it will be understood that various alterations in the details of construction may be made without departing from the scope of the invention, as indicated by the appended claims.

What I claim is:--

l. A locking device for a Window sash comprising, in a sash, a fixed cam member, a locking pin slidable and rotatable therein and adapted to project therefrom, another cam member fixed to said pin and adapted to (zo-operate with the rst cam member to slide said pin, a ratchet Aface formed on said second cam member, and another ratchet rotatable on said pin and adapted to engage said ratchet face and turn the second cam member.

2. A locking device for a window sash comprising, in a sash, a xed cam member, a locking pin slidable and rotatable therein and adapted to project therefrom, another cam member ixed to said pin and adapted to co-operate With the rst cam member to slide said pin, a ratchet face formed on said second cam member, another ratchet rotatable on said pin and Aadapted to engage said ratchet face and turn the second cam member, and a torsion spring secured to said ratchet and adapted to wind on turning said ratchet in the driving direction, whereby said ratchet turns idly over said ratchet face when the driving movement is arrested.

3. A locking device for a window sash comprising, in a sash, a fixed cam member, a locking pin slidable and rotatable therein and adapted to project therefrom, another cam member xed to said pin and adapted to Vco-operate with the rst cam'member to slide said pin, a ratchet face formed on said second cam member, another ratchet rotatable on vsaid pin and adapted to engage sad ratchet face and turn the second cam member, an operating-lever extending from said ratchet, and a chain hanging from said lever.

4. A locking device for a` window sash comprising, inra sash, a fixed cam member, a locking pin slidable and rotatable therein and adapted to project therefrom, another cam member fixed to said pin and adapted to co-operate with the rst carnmember to slide said pin, a ratchet face formed on said second cam member, another ratchet rotatable on said pin and adapted to engage said ratchet face and turn the second cam member, a torsion spring secured to saidratchet and adapted to Wind on turning said ratchet in the driving direction, whereby said ratchet turns idly over said ratchet face when the driving movement is arrested, an operating lever extending from said ratchet, and a chain hanging from said lever. Y

ALBERT HANDFIEID.

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