US1625293A - Automatic safety window latch - Google Patents

Description

April 19, 1927. 1,625,293

H. S. WHEATON AUTOMATIC SAFETY WINDOW LATCH Filed June 1923 5 lmizzor' 36 77%; flied/0n fil Patented Apr. 19, 1927.

Y timers sir imam s. vvzeamon, or D IOWA- AUTOMAT-IC SAFETY WINDOW LATCH;

Application filed June 6,

object of'my invention is to provide a window latch which is aiitom-atic in its operation and which can be made cheaply and which, will: work efiiciently.

More particularly, my invention: relates to a window latch adapted to be usedin combination with a pair oi window sashes, which are slidable relative to each other, the latchbeing of such construction that it will automatically engage one of. the sashes for. preventing any movement thereof.

Still a further object is to provide a hand engaging element which may be engaged by the hand of the operator, with the thumb engaging-a: release lever for releasing the latch and, permitting the window sashes to be moved relative to each-other.

it-h these and other objects in view, my invention consists in the construction, arrangement and: combination of the various parts-of my device, whereby the objects coni'P'iilPlht GClare attained, as hereinafter more fully set forth, pointed. out inmy clain-is, and illustrated inv the accompanying drawings, in which: j V

Figure 1 is a pe ective view of pair of window sashes with my improved latch Fll'iOYll: thereon.

Figure 2 is a central vertical, sectional view, through a pair of window sashes and my latch.

Figure 3 is a detail, sectional view taken on line 33 of Figure 1; and

Figure 4 is a detail view showing the pivotal connection between the control lever and the plunger rod.

In the accompanying drawings, I have used the reference numeral 10 to indicate generally a window casing provided with the ordinary divider strip 11. Slidably mounted within the window frame 10, are the upper and lower window sashes 12 and 13. The parts just described are of the ordinary construction.

My latch includes a frame or supporting plate 14, which is preferably formed of a flat piece of metal having a portion bent at right angles near its upper end. The frame 14; rests against the lower window sash 13 and has the right angle extension or bent portion rest upon the upper surface of the window sash, as clearly shown in Figure 1 of the drawings. The frame 14 is secured to the window sash 13 by means of screws 15 extended through openings 16.

1923. Serial 1%.. 643 ,6292

Secure-d1 on the right angle extension of the frame 14 is a tubular shaped member I? having its ends bent over so as to provide end closure members 1?8 and 19- for the tube 1%. The end closure members 18 and 19 are provided with small openings of sufficient di-ann eter sothat plunger rod 20 may be slid:- ably mounted therein.

The plunger rod 20 is provided with aa loop 21 at its outer end. A stop member 22 is secured to the plunger rod: 20- and is received within thev tube 17. A coil spring 23 extends around the plunger rod: 20 and: is received between the closure member 19 and the stop member 22- and' within the tube 17.

From the construction of the parts just described, it will be seenthat the coil spring. 23 tends to normally hold the stop member 22 against the closure member 118-.

The frame 1% is provided with a pair of ears which are provided with openings which receive the pintle rod 25. A: control actuating lcvr 26 is mounted for movement on the pintle rod 25 by meansof a:

bearing cap 2?. In the drawings, T have shown. the bearing cap-as secured to the lever 26 by means of rivets 28-, but it will sounder-r stood that the lever and bearing cap may be formed of a single piece of metal with tongues or the like for engaging the pintle rod 25.

The upper end of the lever 26 is bifurcated (as at 29). The fingers on each side of the bifurcated portion 29 are bent over so as to provide loops 30. The loop 21 on the end of the plunger rod 20 is received in the bifurcated portion 29 between the loops 30. A pintle rod 31 extends through the loops and through the loop 21 for connecting the lever 26 to the plunger rod 20, for forming a pivotal connection.

On the upper window sash 12, on the surface adjacent to the window sash 13, is mounted a plate 32. The plate 32 is recessed into the sash 12. The plate 30 is secured to the sash 12 by means of the screws 33. A plurality of openings 34 are provided within the plate 32 and register with openings 35 formed in the sash 12.

The free end of the plunger rod 20 is designed to be selectively received in any of the openings formed in the plate 32 and the sash 12.

In Figure 2 of the drawings, I have shown the plunger in one of the openings and when in this position, the window sashes will be locked against movement relative to each other. lVhen it is desired to move the window sashes relative to each other, it is necessary to release or move the plunger rod against the action of the coil spring so that the plunger rod cleared from the opening. The parts are so arranged that the plunger rod may be moved by pressing the lower end of the lever 90 innuirdly or towards the frame 14:.

Secured to the frame 1i just below the lower end oi' the lever 26 is the hand ongaging element 36. The hand engaging elemeat 36 is so positioned that it may be engaged by the tour lingers oi the hand, and the lower end of the lever 26 may be engaged by the thumb, wherein the plunger may be released and the lower window sash raised by engaging the hand elements.

It will be seen that the lower end of the lever is so positioned that the hand engaging element may be engaged, and the lever simultaneously engaged for moving the plunger to inoperative position and raising the window sash. The plunger will move into one oi the openings formed in the plate due to the pressure of the spring 23.

It will be seen that my loch operates automatically and will latch the window sashes in almost any desired position. The plate 32 may be made the entire length of the upper window sash, and the openings therein may be positioned as desired for securing latching positions as necessary.

My device can be used in place of cords and weights ordinarily used. The latch can be released from the inside and will then,

permit either the upper or lower window sash to be raised or lowered. The latch operates from the inside and will prevent opening from the outside. Both the upper and lower window sashes will be effectively latched by the single latch structure and will latch them in any desired position.

Son'ie changes may be made in the coin struetion and arrangement of the various pirts of my invention, without departing from the real spirit and impose of my invention and it my intention to cover by nrv claim, any modified forms of structure or use oi mechanical equivalents, which may be reasonably included. within their scope.

1. claim as my invention:

in combination with windows of the sliding double sash type, means for latching one sash relative to the other, said means coumrising a supporting plate secured to the upper end of a side rail of the lower sash and having a right angled extension over the top of said sash, a tubular member having a restricted end mounted on said right angled extension, a plunger slid-ably mounted in said tubular member, a collar secured to said plunger, a spring interposed hetween the collar and said restricted end, a lip on the other end oi said tubular member for engaging the collar a perforated plate secured to the side rail of said upper sash, the perforations in said perforated plate being designed to selectively coact with said plunger, a spring in said tubular member for normally holding said plunger in en gagement with any one of said holes, a lever pivoted on said su 'Jporting plate for retracting said plunger and a. handle secured to said supporting plate adjacent the lower end at said lever.

HARRY S. lVHEAiON.

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