US109800A - Improvement in curtain-fixtures - Google Patents

Description

acct site anni effin.

JOHN G. BROTHWELL, OF WOLCOTTVILLE, CONNECTICUT, ASSIGNOR TO TURNER, SEYMOUR & JUDDS, OF SAME PLACE.

Letters'Patent No. 109,800, dated December 6, 1870.

IMPROVEMENT IN CURTAIN-FIXTURES.

The Schedule referred `to-in these Letters Patent and making part of the same.

To all whom it may concern:

Be it known that I, JOHN G. BnoTnwnnL, of Wolcottville, in thecounty of Litchfield and State of C011- necticut, have invented and made an Improvementiu Curtain-Fixtures; and the following is declared to be a correct description of the same.

This invention is for sustaining a curtain-roller at any given point, and preventing its unrolliug, except as the same may be lowered by the action of a cord that rolls upon a spool as the curtain unrolls, and the reverse.

My improvement relates to a stop-lever, that is so constructed and applied to the curtain-roller that the Contact of the ratchet with the stop-lever throws that lever into the ratchet-notches or teeth, vand arrests the movement of the curtain. The parts are very simple,

easily made, and not liable to get ont of order.

In the drawing- Figure l is a section, transversely, of the curtainroller.

brackets, and spool d, for the cord e, may be of any usual or desired character, and the curtain f is to be so attached that the'cord e is wound upon the spool as the curtain is allowed to run down, andthe reverse, as now usual.

The ratchet-wheel Ii forms one side of A the spool (l, and between that wheel i and the bracket e the'stoplever l is introduced. I 4This lever lis made with theeatch-piece or pawl o projecting from one side, and with alight arm and ring or loop at s for the cord c, and the lever is of such a. weight on the respective sides of the fulcrumr, that the block o will tend to fall into one of the notches of the whecl`fi, and the roller, in turning, as the curtain is lowered, tends to move this end of the lever in the samedirection, in consequence ofthe friction of the wheel 'i against the side ofthe lever l; hence the parts will operate muchmore reliably than in the curtainfixtures heretofore made and known as the pendulum curtain-lixtures, wherein the cord has to be drawn out from the window to relieve the pawl.

In my fixture the corde simply requires t0 be drawn down in rolling up the shade or curtain, and held with a sufficient friction, as the shade runs down, so as to keep the stop-lever in the position shown in figl; but as soon'as the cord e is released the lever Z falls, and the block o takes one of the ratchet-teeth i and prevents a further movement of the curtain, and this motion 'of the lever l is 'accelerated by the friction or contact of the roller-end and wheele'with the side of said lever l,the two parts moving in the same direction as the pawl o falls into place.

The pawlo is limitedin its movement, and for this purpose an opening is made at n, of a size sufficient to allow of the passage' of the center or axis, x, of the roller, when the lever is in either the position of tig. l or iig. 3, hence the movement will be limited by contact with the said center or axis x.

The pivot or fuicrnm of the lever l may be a projection from the bracket c, entering a hole in the lever, or the reverse.

I claim as my invention-- A The lever] and projecting block o, aaranged to move between the bracket lt' and the wheel i, in the manner specified, so that the contact of the wheelt with the side of the lever Zshall tendto move the pawl-block o into contact with the ratchet-teeth ofthe wheel i, as and for the purposes set forth.

Signed by me this 20th day of September, 1870.

' JOHN G. BROTHWELL.

Witnesses J F. CALHOUN, GIDEON H. WELCH.

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