US 893072 A
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Description (OCR text may contain errors)
No; 893,072. PATENTED JULY 14, 1908.
APPLICATION FILED MAR. 22. 1907.
them to close automatically in case of fire,
UNITED STATES PATENT OFFICE.
GEORGE HAYES, OF MOUNT VERNON, NEW YORK.
Specification of Letters Patent.
Patented July 14, 1908.
Application filed March 22, 1907. Serial No. 363,833.
w ose sashes are pivoted to the window frames and hung off the center, to enable and the object is to provide a ready and permanent means of their becoming closed and securely held close, during the progress of a fire, the sash when open is held in that condition by a chain having at a convenient oint, a fusible link or by a combustible cord fastened to the handle of the latch and to a hook or cleat, at a point attached below the sash, and upon the occurrence of a fire the chain or cord is severed by the action of the fire, and the sash closes by gravity caused by the superinduced weight, imposed by its being hung ofi its center and is held closed by the bolt of the latch'which shoots upward into the keeper.
This device consists of a boX or casing which contains the bolt, operated by a spring, and by a sliding device also operated by one or more springs, at the bottom of and outside of the casing is a handle or ring integral with thedslide to which is attached the chain or cor The main object of this invention is to relieve the bolt of the direct weight of the chain or cord and the superinduced weight of the sash when in an open condition, so that the bolt in closing the sash may operate more freely and independently of the slide and yet be under the influence of the slide when the sash is closed and it is desired to disengage the bolt and permit the sash to be opened by pulling on the chain or cord.
I illustrate my invention in the accompanying drawing in which Figure 1 is a bottom plan with the bottom plate removed. Fig. 2 is a section on line cd of Fig. 1, and Fig.- 3 is a section on line ab of Fig. 1. V
Similar letters refer to similar parts throughout the several views.
The casing is indicated by A, the flange or wings by B, by which the casing is attached to the sash, the bolt at C, the guide and stop at D against which the spiral spring H abuts. Said spring lies in a chamber C formed in the bolt C.
E is the slide having the handle or ring E.
F, indicates the chambers formed by the walls of the casing A and the sides of the slide E in which chambers two spiral springs H are 'placed.-
G are su ports within the casing to which D the back p ate I is secured.
J is the keeper having a projection flange or striking plate J against which the bolt O strikes when the sash is being closed. The latch is attached to the sash and the keeper is attached to the frame.
When the window is to be 0 ened or in other words, when the bolt is to e retracted the handle or ring E is drawn upon and through the slide the bolt is retracted. This handle E is adapted to receive the chain. This chain is drawn upon to operate the bolt to release the sash from the window frame and to swing the sash on its ivot. The weight of these parts however, is taken off from the bolt by the springs which act on the slide and thus while the bolt is operated by certain devices the weight of these devices is taken off therefrom when the sash is closing and the bolt is entering the keeper so that it will be certain to engage the said keeper.
While I prefer to make my latch as shown on the drawing I do not wish to bind myself to its identical mechanical construction, as the same result may be obtained by the employment of two instead of three springs, one to operate the bolt and one to operate the slide, but
What I claim as new is In a soaslh fastener the combirliation of a cas- 1n a o t a s rin or a yin ressure to the bolt, a slidb co ntactin g with th e bolt, a spring for placing the slide under pressure, said slide when retracted causing the retraction of the bolt the said bolt being adapted to be retracted independent of the slide and means for retracting the slide, substantially as described.
' GEO. HAYES. Witnesses:
DOUGLASS CARNEGIE, FRANK VON HALLE.