US518494A

US518494A - Sash-holder

Info

Publication number: US518494A
Authority: US
Publication date: 1894-04-17
Anticipated expiration: 1911-04-17

Description

J. W. EVANS. SASH HOLDER.

(No Model.)

,494. Patented Apr. 17, 1894.

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UNITED STATES PATENT OFFICE.

JOSEPH l/V. EVANS, OF NEWBURYPORT, MASSACHUSETTS.

SASH-HOLDQER.

SPECIFICATION formingpart of Letters PatentNo. 518,494, dated April 17, 1894. Application filed $cpteniber 16, 1893. Seria1N o.4=351 (N0 modem To all whom it may concern! Be it known that I, JOSEPH W. EVANS, of Newburyport, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Sash-Holders, of which the following, taken in connection with the accompanying drawings, is a specification.

The object of this invention is to provide an improved window sash holder and anti-rattler, especially adapted to meet the requirements of railway cars, street cars and the like. Heretofore it has been customary to employ springs pressing a friction plate or piece directly outward against the casing, and the tension of the spring was liable to be either excessive or insufficient, so that the sash would bind or else would be unsupported.

I My device consists of a base or body sunken 1n an edgewise recess of the sash and fixed in such position, and a friction piece orlock anchored to the base but having a slight horizontal movement toward and from the base so as to engage with the sashway of the cats ing or be released therefrom, in combination with a spring actuated dovetailed wedge working vertically between said base and friction-piece and engaging with dovetailed inclined faces formed thereon, such wedge being retracted against the resistance of the spring by a lever forming the finger-piece of the sash lifter. The action of the spring presses the wedge upwardly between the base and friction-piece, and the sidewise movement incident to the use of a sash loose enough to slide freely in its casing is prevented by the wedge and does not act directly on the spring; but when the operator seizes the lifter to raise or lower the sash he thereby retracts the wedge and the friction piece moves inwardly, away from contact with its casing.

In the drawings, Figure 1 represents a sash provided with my improvement, parts being broken away to show the construction. Fig. 2 is an elevation and Fig. 3 a vertical central section of my device on an enlarged scale, and Fig. 4 is a transverse section on the line m Fig. 3.

A is the sashway of the window casing and B the sash moving therein.

O is the base or body of my device secured innn edgewise recess of the sash, and D is the friction piece or look which bears out wardly against the sash-way. These parts C and D have inclined faces approaching each other and formed with dovetailed grooves, E, and between them is a wedge F, having corresponding dovetailed ribs on its inclined faces engaging with the grooves E. The wedge has a stem G, working through aledge or arm H, which projects from the base C, and the operating spring J, surrounds said stem and its ends bear against the wedge and said ledge or arm, with the requisite tension. The arm H, forms a guide for the stem G. The lower end of the stem is connected by a link K to the lever L, which is fulcrumed within the casting M, and the free end of the lever is broadened to form a finger piece which when pressed upwardly upon, in raising the window, withdraws the wedge and releases the friction plate, giving free movement. The friction piece D, is suitably anchored to the base 0, so as to move vertically with it but have a limited lateral movement toward and from it. As herein shown the piece D has a horizontal arm Nworking in a perforationin the thickened upper part of the base, above its inclined face, the arm being held fast by a screw.

In Fig. 2 the spring is expanded and the wedge thrust upwardly to its limit, the friction piece being thus pressed outwardly against the casing A, while in Fig. 3 the wedge is drawn downwardly, compressing the spring and freeing the piece D from contact with the casing. These two positions of the parts are respectively shown on the right and left sides of Fig. 1.

The casing may have one or more shallow sockets to form locking points for the sash and from which the jar of a car-movement would not dislodge the friction piece D. Such a socket is shown near the lower right corner of Fig. 1, and is desirable; but for many pur poses a roughened bearing surface on the pieces D, will sufiElce to hold the sash at the desired height.

In raising or lowering the sash the operator will naturally press the finger-piece of the lever L toward the rigid thumb-piece on the casting M, and this serves to release the friction and free the sash.

I claim as my invention--- 1. In a sash-holder the base or body 0 and the laterally movable friction piece I) anchored thereto, having the oppositely inclined faces, in combination with a spring-actuated wedge working between said faces and with a lever forming part of the sash lifter suitably' connected with and adapted to retract such wedge against the resistance of its spring, substantially as set forth. A

2. In a sash-holder, the base or body 0, adapted to be secured in the edge of the sash and the laterally movable friction-piece D adapted to bear'against the sashway of the casing, said parts having the upwardly-converging dovetailed faces as described,in combination with the dovetailed wedge F engaging with said parts, the spring J serving to press it between them, and with the arm H, stem G and lover L to support and compress said spring and thereby actuate the friction 20 piece, substantially as set forth.

In testimony whereof I have signed. my name to this specification, in the presence of two subscribing witnesses, on this 5th day of September, A. D. 1893.

JOSEPH W. EVANS.

Witnesses:

A. H. SPENCER, THOMAS J. KENNY.