US643400A - Sash-fastener. - Google Patents

Description

N0. 643,400. Patented" Feb. l3, I900. E. II. CUMSTUCK. SASH FASTENEB.

(Application filed May 20, 1898.)

(No Modl.)

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TATES PAENT Fries.

EDGAR M. COMSTOCK, OF YPSILANTI, MICHIGAN.

'SASH-FASTEN ER.

SPECIFICATION forming part of Letters Patent IhIo. 64%,400, dated February I3, 1900.

Application filed m 20, 1898.

T0 all whom it natty concern:

Be it knownthat I, EDGAR M. COMSTOCK, a citizen of the United States, residing at Ypsilanti, county of Washtenaw, State of Michigan, have invented a certain new anduseful Improvement in Sash-Fasteners; and I declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to sash-fasteners; and it consists in the improvements hereinafter described, and pointed outin the claims.

In the drawings, Figure l is a perspective of the fastener. Fig. 2 indicates the location of the fastener on the window-sash. Fig. 3 is a plan of the fastener with the top part of the inclosing walls removed. This figure shows also the means for releasing the bolt from its detent. Fig. 4c is a plan of the fastener, showing the bolt held back by its detent. The cover-wall is removed in this fig ure. Fig. 5 is a plan view of the lock with the upper part of the case broken away.

The fastener consists of a box, preferably of metal, in which there is a sliding bolt B, arranged to be'withdrawn, so that the front end of the bolt is flush with the front wall Z) of the fixture-casing, or to be projected a distance sufficient to engage in a socket and hold the window from being either raised or low may extend to the back wall 5 and the thumbpiece project through a slot in it.

To the bolt B is secured a parallel bar 6, thatpasses through a perforation in a lug e, and a coiled spring e is interposed between the front end of the parallel bar 6 and the lug c. The parallel bar serves to aid in holding the bolt B from rotation on its axis and also serves to retain the spring 6 in proper position to constantly press the bolt B forward to its locking position. There is on the bolt B a spur f, and there is located within the fixture-casing a lever g, the front end of which is scarfed off and is provided with a hook 9'.

Serial No; 681,178. (No model.)

The rear end extends to the rear end of the casin g and terminates with an actuating-ban; dle 9 In front of the scarfed-off portion of the lever g is a second lever h, which lies athwart the scarfed-off end of the lever g, and this lever 72 is pivoted to the back of the case and extends to the front of the case and through the case, from which it projects far enough to engage the fixture D, hereinafter mentioned. It has a vibratory motion and is capable of actuating the lever g and causing it to turn on its fulcrum 9 The principal motion of the lever his in an arc substantially parallel with the path of travel of the bolt 13, and it has engagement with the lever 9 when its upper end is thrown backwardthat is, toward the fulcru m-point of the lever g to cause the front end of the lever g to move in an are away from the bolt, and this causes the disengagement of the catch g with the spur f. These two partsthe catch g and the spur f- -are brought into holding en gagement by the operator when he draws the bolt back by means of the thumb-piece c and pushes the lever g in a direction to bring about the engagement. On the casing of the window and a short distance above the location of the fixture on the sash is secured a fixture D,which slopes or slants from the window-casin g outward and extends into the path of the protruding end of the lever h, and whenever the window is raised or lowered so as to pass the piece D the piece engages the lever, throws the protruding end backward,

and brings about a disengagement between the hook g and the spur f, so that whenever the window-sash is opened from a fully-closed position or is closed from a position so open that the fixture was above the piece D the detent is disengaged and the bolt B will work.

The front end of the bolt B is provided with a friction-wheel 20, which serves to prevent the sliding engagement between the end of the bolt and the window-casing and overcomes the abrading effect of the bolt on the casing.

What I claim is 1. In a sash-fastener, the combination of a locking-bolt provided with a spur, means for actuating the bolt, a lever provided with a hook arranged to engage the spur on the bolt said lever being provided with an actuatinghandle that projects to the outside of the easing, a part arranged to engage the hooked lever and swing the same, and provided With an end which protrudes to the outside of the 5 case, and a piece, D, adapted to actuate said last-mentioned lever, substantially as described.

2. In a sash-fastener the combination of a bolt, B, adapted to be actuated longitudinally, 10 a spring acting to protrude said bolt, a spur,

f, on said bolt, a lever, 9, approximately parallel to the bolt, 13, and extending from the end of the casing as at, g said lever being provided with a hook, g, adapted to engage

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