US601283A - Sash-balance - Google Patents

Description

D.- SAWYBR su J. W. PRICE. SASH B! \;LANG]:|`.`

(No` Mod 61:)

Patented Mar. 29, 1898.A

Y' UNITED STATES PATENTV OFFICE.

DANIEL sAwYEE AND JAMES w. PRIcn'oE NIXoNToNNoETH CAROLINA.

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SPECIFICATION forming part of Letters Patent No. 601,283, dated Match 29, 189e. l Appntttitn mea June 1o, 1897. semina. 640,182. (Nomaden To all whom it may concern,.-

Be it known that we, DANIEL SAWYER and JAMES W. PRICE,citizens of the 'United States,

residing at N ixonton, in the county of Pasquotankand State of North Carolina, have invented certain new and useful Improvements in Sash-Lifts; andwe do hereby 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 appertains to make and usev the same.

Our invention has relation, primarily, to

improvements in sash-lifts; and the object is to provide a simple, inexpensive, and effective device of this class.

To this end the novelty consists in the construction, combination, and arrangement of the various elements of the same, as will be hereinafter more fully described, and particularly pointed out in the claim.

In the accompanying drawings, forming a part of this specification, the same reference characters indicate the same parts of the invention.

Figure 1 is an elevation of the upper part of a window to which our improved sash-lifter is applied. Fig.' 2 is a transverse vertical section of the lift on the line of the shaft.` Fig. 3 is an elevation with the bracket 1 removed. Fig. 4 is a similar View showing the helical spring. Fig. 5 is a detail of the tripping mechanism.

1 represents a plane rectangularplate, to

Y which are secured the plane edges of the approXimately semicircular, brackets 2 3, the former removably secured theretoby the vertical screws 5 and the latter by the screws 6,

' passing horizontally through the plate 7 the said plate being an integral part of the baseplate 1 and projecting at aright anglegthereto.V

S represents a helical springcased inV the bracket 3, its outer end secured in the'wall of said casing and its inner end to the circularv shank of the rectangular horizontal shaft' 9, journaled in the plates 7 and 10 and in the bearing-plate 11, countersunk in the inner face of the bracket 2. "A drum l2, carrying a cord 13 and having on the outer edges of its periphery the annular flanges 12', provided with a central rectangular orifice, fits on said shaft 9 and has on its inner end the circular ratchet-plate 13 and on the opposite end a U-spring 17 the ends of the arms of said spring being secured one inthe plate lO and the other in the arm of the bell-crank pawl, and an eye in the end of the arm receives a cord 18, the opposite end of which connects with vone arm of a bell-crank lever 19, pivoted on a bracket 20, suitably located on the windowcasing. One end of a cord 21 is secured in an eye in the end of the opposite arm of said bell-crank lever 19 and leads to an eye in the upper end of a rod 22, which is free to move longitudinally in a tubular casing 23, its upward movement limited by the right-angular integral knob 24. The upper externally threaded shouldered end of the casing 23 passes through an eye in the bracket 24', secured to the window-casing, and is held by the nut 25. Y

A plate 25', secured to the under edges of the brackets 2 3, protects the mechanism and gives the device a finished appearance.

In the drawings, Fig. 1, we have shown our improved sash-lifter applied to the lower face of the head of the` sash-frameby means of screws 26, which pass diagonally through the feet of the brackets 2 3 and the plate 1, the cord 13 being centrally vsecured to the top rail of the lower sash and the bell-crank 19 and operating-rod 22, suitably placed relative thereto on the window-frame.

In operation it is apparent that drawing the sash down to close it revolves the drum .12, winding the spring 8, the tension of which is retained by the pawl 15, and a downward pull on the knob 24 releases said pawl, and the sash is lifted by the unwinding of the spring and consequent reverse revolution of the drum.

While we have shown our sash-lift applied to the exterior of the casing, it is evident that it is equally effective if concealed from Viewv IOC each liftfor the passage of the cords. Changes in the location of the lift require but slight modification in the mechanism for tripping the pawl.

Vhile we have specically described the construction and relative arrangement of the several elements of our invention, we do not wish to be confined to the same, as various modifications will suggest themselves to those skilled in the art without departing from the spirit thereof.

Having thus fully described our invention, what we claim as new and useful, and desire to secure by Letters Patent of the United States, is-

A sash-lift, comprising parallel, vertical brackets, a spring-actuated revoluble shaft mounted transversely therein,a grooved drum mounted on said shaft and revolving therewith, a sash-cord adapted to wind in said drum and connected with the sash, a peripheral ratchet on said drum, a pawl adapted to engage therewith, a pivoted bell-crank lever mounted on one of the side rails of the window-casing, a cord connecting the pawl and an arm of the bell-crank lever, a pull-rod provided With a knob-ended integral right-angular arm at its lower end, said rod adapted to move vertically in. a stationary cylindrical casing secured to the side rail of the windowcasing below said pivoted bell-crank lever, a cord connecting said rod with one arm of said bell-crank lever, substantially as set forth and described.

ln testimony whereof we affix our signatures in presence of two Witnesses.

DANIEL SAWYER. JAMES XV. PRICE.

Witnesses:

CHARLES A. BANKS, M. B. CULPEPPER.

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