US742090A - Window-fastener. - Google Patents

Description

NOM/12,090. P ATENTED 0012.20.1903. W; D. WATSON. WINDOW PASTBNER. APPLIATIN IILBD 00T. 6, 1902.

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WILLIAM D. WATSON, OF CHICAGO, ILLINOIS.

WINDow-FA'STENER.

SPECEFICATION forming part of Letters Patent No. 742,090, dated October 20, 1903.

Application i'lled October 6, 1902.

T0 @ZJ whom t may concern.'

Be it known that I, WILLIAM D. WATSON, a citizen of the United States, residing at Ohicago, in the county of-Oook and State of Illinois7 have invented certain new andv useful Improvements in Window-Fasteners, of which the following is a specification.

This invention relates to fasteners or latches for swinging windows and the like, and is more particularly designed as an improvement upon the fastener set forth in my prior Letters Patent of the United States, No. 654,371, granted July 24, .1900.

In the operation of the fastener set forth in the above-mentioned Letters Patent it has been discovered that inasmuch as the very first movement of the locking-lever starts the window away from. the casing the slot provided in the latter for the reception of the locking-bolt must be considerably larger than is necessary for locking purposes in order to prevent the binding of the bolt against the front of the slot during such initial swinging movement of the window. Thisdifticulty is avoided in the present improvement by providing a striking-plate on the window-casing which will yield or spring inwardly when the locking-lever is first pulled, and will thus permit the locking-bolt to be entirely Withdrawn from the slot in the casing before the lever window.

The invention consists in the matters thus and hereinafter set forth, and particularly pointed out in the appended claim, and will be fully understood from the following description of the accompanying drawings, in

Figure l is a sectional side elevation of a swinging window with fastener constructed in accordance with my invention. Fig. 2 is an enlarged detail view. Fig. 3 is a horizontal sectional detail through the spring striking-plate on line 3 3 of Fig. 2. y In said drawings, 1 designates the windowsash, and 2 the window-casing, which is built into the Window-openin g provided in the wall of the building to receive the sash. The lat-v ter is herein shown as comprising a tubular metallic frame within which the glass 3 is suitably secured and. through the sides 4 of which plates 5 are passed to pivotally supseriti No. 126,028. (No maar) port the sash within the casing, these pivotbolts being so located that the weight of the sash tends toswing it closed.

As in my former patent, the fastener F itself comprises an oscillatory lever 6, which is .pivoted at 7 between the lugs 8 of a clip 9,

that is rigidly secured to the upper edge of the sash by rivets 10 or the like. This lever 6 thus swings in a plane at right angles to the sash and the sash-pivots and is provided with an upwardly-projecting contact end 11, arranged to strike a plate on the window-casing as the window approaches its closed position, and with an upwardly-projecting looking-bolt 12, which locks the window when lever that a pull upon the cord will tend to swing the lever upon its pivot, so as to retract the locking-bolt from the slot or socket 13, and, as herein shown, this cord is fastened to the extremity 16 of the lever on the same Vside of the pivot as the bolt 12 and at such a distance from the pivot as to afford a conveniently great leverage for" retracting the bolt and forcing the window open.

In the present improvement the contact end 11 of the leverdoes not strike directly against the c'asing, but against a yielding striking-plate P, which is. riveted or otherwise suitably secured to the casing at a point where the end 11 of thelever will come in contact. with it. As herein shown, this plate consists of a base 17 and a yielding front 18, which is adapted to slide within the base, but is normally held within the base by anges 18. To keep the front plate normally projected and yet enable it to yield under the contact ofthe lever 6, springs 19 are applied between the front plate and base in any suitable manner. As herein shown, these springs are of coiled wire and are inclosed within telescoping tubular guides 20, which prevent ldisplacement either of the springs or plate. By thus mounting the front plate between the iianges carried by the base-plate IOO and employing telescopic guides inclosing the actuating-springs it Will be observed that the front plate will be prevented from tilting or binding in its movements, irrespective of the point at which the end 11 of the lever strikes it. This construction therefore is especially advantageous When used in connection With my form of locking-lever.

In the operation of the device thus described the swinging of the Window to its closed position will bring the locking-bolt of the level' beneath the ledge 14E of the casing before its end 11 strikes the contact-plate P, which latter will then yield to permit the window to swing closed and the locking-bolt to arrive opposite the slot or socket 13, into which it will then be forced by the pressure of the springs 19 of the strikingplate. Any direct pressure upon the Window will then be positively resisted by the locking-bolt; but when a pull is exerted upon the cord 15 the resultant swinging of the lever upon its pivot will first compress the striking-plate until the bolt is released from its socket, as shown in dotted lines, Fig. 2, and will then exert its leverage to force the window open.

It Will be observed that the spring strikingplate is attached to the window-frame above and out of the path ot' the sash and also that the plate is flat on its striking-face in order that should the sash sag or the plate be set slightly inaccurately the striking end 11 of the lever will when it comes in contact with "Maceo it strike it squarely and not With a glancing blow.

I claim as my invention y In combination With a Window-casing and sash pivoted upon horizontal pivots, ot' a locking device consisting of a lever pivotally mounted on the upper end ot' the sash and provided With a contact end extending above the pivotal point and also with an upward projecting bolt adapted to engage the Window-casing, a pull-cord or the like attached to the lever, and a resilient buffer device attached to the Window casing coincidently with the contact end of the lever so as to receive the impact of the same When the sash is closed, said resilient device consisting of a iianged base-piece adapted for attachment to the window-casing, a front plate having a flat striking-face and provided with flanges 18 at its opposite edges engaging and having a sliding connection with the flanges on the base-plate, coil-springs interposed between said plates, and telescopic tubular guides in closing said springs, for the purposes set forth.

In testimony that I claim the foregoing as myinvention I my signature, in presence of tWo subscribing Witnesses, this 27th day of September, A. D. 1902.

WILLIAM D. vWATSON.

Witnesses:

HENRY W. CARTER, K. A. COSTELLO.

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