US232963A - William h - Google Patents

Description

W. H. HARRISON. Ourtain Fixture.

No" 232,963. Patented OCT. 5,1880.

NITE STATES PATENT rare.

WILLIAM H. HARRISON, OF NEWARK, NEWV JERSEY, ASSIGN OR TO HIMSELF, TIMOTHY IV. LORD, AND FRANK B. ALLEN, OF SAME PLACE.

FIXTURE.

SPECIFIOATION forming part of Letters Patent No. 232,963, dated October 5, 1880.

- Application filed December 4, 1879.

To all whom it may concern Be it known that I, WILLIAM H. HARRI- soN, of the city of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Shade-Rollers; and I 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 use the same, reference being had to the accompanying drawings, and to letters ofreference marked thereon, which form a part of this specification.

My invention relates, generally, to that class of shade-rollers in which the roller is provided with a spiral spring for the purpose of automatically winding up the shade, the latter being held at any adjustment by means of a sliding pin engaging with a notched spindle.

The present invention relates in particular to the construction of the plate which carries the sliding pins; and it consists in constructing that plate with bosses which are to be fitted into recesses formed in the roller to prevent the said plate from turning, said bossesbeing provided with lateral channels which are to inclose the sliding pins on all sides so as to effectually keep them in place, by reason of which construction there is economy of metal and a more satisfactory working of parts, taking the fixture as a whole.

In the drawings, Figure 1 is a plan view of a shaderoller embodying my improvement. Fig. 2 is an end view of the same. Figs. 3 and 6 are modifications of the invention, and Figs. 4 and 5 are detail views, showing the shouldered spindle.

Similar-letters of referenceindicatelikeparts in each of the several figures.

In carrying out my invention I construct a plate, A, through the center of which is a circular aperture, a, to allow the spring-bearing spindle b to pass, and having one or more (in the present case three radial borings or channels, c, passing from the circumference to the before-mentioned central aperture, bosses d being formed on the surface of said plate to al' low the requisite thickness of metal for said borings. Within the latter I place short me-. 50 tallic bars, 6, that freely slide therein, and

which act in connection and engage with stopshoulders f on the spindle. The bosses on the surface of the plate, being set into grooves in the end of the roller in the manner indicated in Fig. 1, prevent the plate from sliding from its proper fixed position when in operation. The plate A is also held upon the roller-body B by means of a metallic ferrule, G, with its outer edge slightly returned upon said plate. Said ferrule also covers the periphery of said plate and prevents the bars 6 from dropping out of the borings or channels therein.

Should it be more convenient, the invention can be modified by striking up, with a die, the plate A, Figs. 3 and 6, leaving radial channels c, as indicated in the said figures, for the reception of the sliding bars 0, this plate A to be supplemented by a plate, in, attached to the ferrule, which plates, acting in conjunction, produce substantially the same results as the plate A, previously described.

In operating my invention, as the plate A is brought over with the roller-body when the curtain is drawn down by the hand, the upper most sliding bar falls and engages with the shoulder of the spindle, and if the hand is withdrawn from the curtain, comes in contact with the shoulder f, and thus holds the curtain stationary. When it is desired to raise the curtain it is first slightly pulled to disen- 8o gage the bar, and then allowed to run up quickly, when the centrifugal force thus generated tends to throw the bars outward away from any contact with the shoulders; but, however, when the upward movement of the curtain is checked the above-mentioned centrifugal force becomes inoperative, and the uppermost bar falls into engagement with the shoulder and again holds the curtain stationary. c

I do not claim a notched spindle, nor sliding pins to engage therewith, nor a plate with studs on the back to fit into notches in the end of the roller, nor a plate formed with guides for the pins; but expressly disclaim 5 them all separately.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s-- In a shade-roller having a notched spindle 10o and turned by a spring and held to the desired adjustment by sliding pins adapted to engage with the notches in the spindle, the plate A, formed with bosses d, fitted into recesses in the end of the roller to prevent said plate from turning, the said bosses being formed with channels 0, for inclosing sliding pins e on all sides and combined with cap 0, which holds plate A against the end of the roller and the sliding bars in the bosses, as 10 shown and described.

In testimony that I claim the foregoing I have hereunto set my hand this 10th day of November 1879.

WILLIAM H. HARRISON.

Witnesses:

OLIVER DRAKE, E. 1. DRAKE.

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