US63592A - Jonathan e - Google Patents

Description

@iti-12h .tutes stzut @Hite JNATHAN R. WHIT'IEMORE, OF CHICOIEE FALLS, IVIASSAGHUSE'ITS.

Letters Patent lo. 63,592, dated April 2, 1867.

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T() ALL WHOM IT MAY CONCERN:

"Be it known that I, JONATHAN R. WHITTEPJORE, ol Chicopee Falls, county of Hampden, and State of lil-assu.- chusctts, have invented a new and improved Window Fastener, of which the following is` a full, clear, and exact description of the saule, reference being had to the accompanyingdrawings, and makiiig a part of this specification, in which- Figure 1 is a plain front side view of'the holder complete.

Figure 2, Va plain front side View of the slide C, with the double self-noting cani, Il E and attached.

Figure 3 is the lever B B, with its cam I-I H H, and rib z L.

In lig. l, A Ais the body or frame of the holder, to which are attached the lever B Il, the slide C, and the double self-acting cam E E and I". The slide C passes through an aperture in the frame A A, to keep itin place. This aperture is formed by the sides I I, and the covering over it, :ind is about three-eighths of an inch square, more or less. The slide C is represented in part by the dotted lines at the side running parallel with 'the dotted lines I I. The lever B B, with its cam II H H, and rib t, is also attached to this frame A A by means of the screw D, which runs through it. The rocker E E and I1 is a self-acting cam which presses against the Window strip to hold it, and is hinged by the pin seen at F, to the slide C. G represents the window strip, or that part ci' the window easing against which cam E E is made to press. Upon the side of the lever B B. and directly upon the edge of the cam Il H H, is a. rib, h It. This rib or projection projects into a space, c, in the slide C, iig. 1. When motion downwards isgiven to the lever I3 B, it turns upon the screw l), and the cani H I-I Il presses against a shoulder of the slide C, and forces itin the direction of the window strip G, and iinnlly presses the cam E E against said window strips for the purpose oi' holding the window from moving either up or down., When the cam E E is pressed against the window strip G, and the window is forced downwardly, the friction ,of the window upon this. cam, E E, causes the cam also to be forced downwards, (or that part of it coming in contact with the windomstrip as it is hung at I?) and being a cam, it' rolls in, and thus produces a harder pressure upon the window strip thc harder it is forced downwards, so that by the use of the cam E E it becomes (after the slide is forced against it) a self-tightener simply by the motion or weight of the window. The same result is also produced if the window is raised or attempted to be raised. It is, as will be noticed, a double cam, or a cam in either direction from the centre of E E, the turning point being ut F, and thus the Window can neither be raised or lowered when held by my fastener. To loosen the window the lever B B is raised, which removes the pressure, and the rib 7L 7L acts upon a. little projection (running downwards) at the end of the slide C, and draws it back, so that it will not rub upon the window strip in moving the window up or down. I am aware that levers With a cam, like H H I-I, have been used separate, which apply direct upon the window strip, but by the use of the slide C the friction and Wear upon the window consequent upon its us'e separately, is avoided. Also by the still additional use of the double scltaoting cam E E, it becomes a very sure holder of the window, and that, too, without any wear of the window strip.

Having thus described my improvements, what I claim as my invention, and desire to secure by Letters Patent, is v I claim the cam H H I-I, slide C, and self-acting cam E E and F, when used in combination, substantially as described,

JONATHAN R. WHITTEMORE.-

Witnesses:

M. J. CALLAN, J. F. CALLAN.

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