US739109A - Sash-lock. - Google Patents

Description

UNITED STATES Patented September 15, 1903.

PATENT OFFICE.

SASH-LOCK.

SPECIFICATION formingpart of Letters Patent No. 739,109, dated September 15, 1903.

Application filed January 25, 1902. Serial No- 9L215. (N0 model.)

To all whom it may concern.-

Be it known that I, JOHN Ross, a citizen of the United States, residing at VVessington, in the county of Beadle and State of South Dakota, have invented certain new and useful Improvements in Sash-Locks, of which the invention consists in the novel construction,

and combination of parts hereinafter more fully described and claimed, and illustrated in the accompanying drawings, showing the preferred form of my invention, and in which Figure 1 is an elevation showing a sash locked in lowered position by my improved lock. Fig. 2 is a similar view showing the sash held in raised position thereby, and Fig. 3 is a detail View of the lock detached.

Referring to the figures by numerals of reference, 1 is a window-casing, to the inner sur:

face of each side of which is secured a rack 2, the teeth thereof having their upper edges horizontal. Each rack terminates at a point removed from the sill 3 and forms an angular shoulder adapted to be engaged by the look when the sash is in its lowest position.-

Secured to eachside of the sash 4 is a lock formed in a single piece of spring metal. This lock comprises a plate 5; a spring-arm 6, integral therewith and extending therefrom; a head 7, and a lift 8, adjacent to the head. The plate 5 is provided with a desired number of apertures 9 for the reception of fastening means whereby the lock may be secured to the sash. This plate is secured in such a position as to hold the head 7 normally pressed the lifts.

racks until arms 6 contact with stops 10, ar-

ranged upon the sash. The sash can then be raised by continuing to press upward upon The upper and lower working faces of the heads 7 are so shaped that one can engage the lower end of the rack and prevent upward movement and the other can engage the horizontal face of any one of the teeth of the rack and prevent downward movement. The end of each head is beveled, as shown at 11, whereby when said head has been disengaged from the end of the rack it can easily slip upward over the teeth and when pressed downward will fit snugly upon a tooth and prevent movement.

It will be seen that the device is simple and effective, can be readily placed in position upon a window, and serves the purposes of a lock, lift, and balance.

In the foregoing description I have shown the preferred form of my invention; but I do not limit myself thereto, as I am aware that modifications may be made therein without departing from the spirit or sacrificing the advantages thereof, and I therefore reserve the rightto make such changes as fairly fall Within the scope of my invention.

Having thus fully described my invention, what I therefore claim as new, and desire to secure by Letters Patent, is-

In a sash-lock, the combination witha window-frame having a rack-bar secured thereto, of a curved'spring-arm having its upper end secured to the lower sash of said frame, the lower end of the arm being provided with a catch and a curved finger arranged on opposite sides thereof, the upper surface of the catch being adapted to springably engage the terminal lower end of the rack-bar to'lock the sash against upward movement, the catch also having a spring movement upwardly over the teeth of the rack-bar so that the i In testimony whereof I afiix my signature under surface of the same will engage any in presence of two witnesses.

one of the teeth thereby to hold the sash in a raised position, the curved finger serving JOHN ROSS 5 to operate the catch, and a stop for regulat- \Vitnesses:

ing the movement of said spring-arm, sub- H. A. PEIRCE,

E. D. SCHOLLIAN.

sta-ntially as specified.

Images