US1086910A - Window-sash fastener and lock. - Google Patents

Description

J. 0. FORD. WIN DOW SASH FASTBNER AND LOOK.

APPLICATION F ILED AUG. 7, 1913.

Patented Feb. 10, 1914 (1 4 yam/mm,

UNITED STATES PANT OFFTQE,

JOHN OWEN FOR-D, 0F JACKSONVILLE, TEXAS.

WINDOW-SASH FASTENER AND LOCK.

To all whom it may concern:

Be it known that I, JOHN Owns Form. a citizen of the United States, resident of Jacksonville, in the county of Cherokee and State of Texas, have made a certain new and useful Invention in \Vindow-Sash Fasteners and Locks: and I declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it appertains to make and use the invention, reference being had to the accompanying drawings. and to letters or figures of reference marked thereon, which form a part of this specification.

Figure l is a side view of the invention in use as a sash fastener. Fig. 2 is a similar view of the invention in use as a sash lock. Fig. 3 is an edge view of the invention.

The object of the invention is to provide a window sash fastener and lock easily made and applied and of simple manufacture, and it consists in the novel construction and combination of parts, as hereinafter set forth.

In the accompanying drawings, illustrating the invention, the numeral 2, indicates a lower window sash and 3, the window frame in which it is mounted. The holding strip at, serves to keep the sash in place. The upper window sash is indicated at 5.

The fastening device consists of a frame 6, and a rotary or turnover balanced cam lock 7, which is pivoted in said frame, the latter being adapted to be fastened to the holding strip l, of the window frame, slightly above the top of the lower sash when closed,

The fastener frame 6, consists preferably of an elongated metal strap about half an inch wide, which is doubled at one end to provide a base portion 8, and a bracket portion 9, the ends of the strap being brought together at the plane of the base. Holes for fastening screws are provided in the meeting portions of the strap at the ends of the frame, as indicated at 10. Pivot holes are provided at the middle of the frame for the pivot nail or pin 11, which is designed to pass through the pivotal bearing of the cam lock. When the device is secured in place to the holding strap, the cam lock is held in position not only by the frame, but also by its pivot pin.

The cam lock consists of a piece of hard Specification of Letters Patent.

Application filed August 7, 1918.

Patented Feb. 10,1914. Serial No. 783,592.

wood, metal or other. suitable hard substance, which has parallel sides and is about three-eighths of an inch thick.

The cam lock is of elongated form, and hangs in oblique forward and upward inclined position when pivoted in the frame, its forward and upper portion 12, being of rounded cam shape and having its edge serrated and projecting from the frame toward the sash with which it is normally in contact. The rearward and lower portion 13, of the device, is the locking portion, and consists of a foot having a toe 14, projecting forward and having a slightly upward and rearward inclined base 15, terminating in a shouldered part or heel 16, having a radial distance from the pivot about equal to that of the top of the cam portion the toe 14, projecting beyond this distance. \Vhen balanced on the pivot, the forward end of the toe is vertically below the pivot, and below the upper end of the cam so that the locking end of the device hangs away from the sash. The base of the foot is substantially parallel to the top of the cam portion, and. in order to preserve the inclined balance, the device is usually made concave on the back, and is notched out in front between the cam and the locking we.

The serrated edge of the cam projects up ward and forward from the frame, and. when the sash is raised, is slightly tilted backward so that the sash slides easily therein. But if the upward movement of the sash is stopped, and it is allowed to move downward, the camedge will at once engage the sash, and hold it securely in place. And as the radial distance of the cam edge from the pivot increases upward and rearward, the greater the downward strain of the sash, the more firmly it will be held. In order to lower the sash, it should first be raised slightly, and then, the heel of the cam lock being pressed slightly forward, the sash can be readily lowered.

hen the lower sash is closed, it can be locked down by rotating the cam lock device, or turning it entirely over forward so as to cause the foot portion to project from the frame, in such wise as to bring its base 15, upon and engaging the top of the sash, the shouldered or heel portion 16 which is short, being adapted to engage the face of the sash so as to prevent casual displace- Inent. This locking end being the heavier end of the device, which is now in backward and upward inclined position, the e11- gagement with the sash is positive, and the long toe portion, which projects beyond the radius of free movement of the device, serves as a stop to prevent the look from being disengaged by shaking or other direct backward movement. In order to unlock the sash, the cam-lock device is turned over backward, so that it takes its normal oblique position in its frame, balanced with its cam edge forward and its locking foot in rear. The heel portion is made short so as to allow this movement, and the device is so balanced as to prevent any casual movement of disengagement.

I claim:

In a sash fastener and look, a pivot pin, a a and balanced on said pm an mcllned over-' turning cam lock device, having a forward upper cam portion normally engaging the sash, a rear lower heel portion of substantially the same radial length as said cam portion, and a forward lower locking toe having a radial length greater than thatof.

J. H. SANDERS,

Copien of this patent may be obtained for five cents each, by addressing the Commissioner 0! Patents. Washington, D. C.

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