US92710A - Improvement in curtain-fixture - Google Patents

Description

datiert guette @tutti @twine Letters Patent No. 92,710, dated July 20, T869.

IMPROVEMENT IN CURTAIN-FIXTURE.

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

reference marked thereon, making a part of this specification.

This invention relates lto a new and improved shadexture; and it refers to that vportion of a shade-fixture which retains the lower part of the roller-cord in proper position, and by which said cord may be kept at a proper tension.

The invention consists in a peculiar construction of 'the fixture, whereby the pulley, over which the rollercord passes, may be adjusted higher or-lower, to regulate the tension of said cord, and without the possibility oi' said pulley casually moving when set or adjusted as desired.

In the accompanying sheet of drawings- Figure 1 is a side view of my invention;

Figure 2, al1-outer or face View; and

Figure 3, a horizontal section of the same, taken in the line x, figs. l and 2.

Similar letters of reference indicate corresponding parts in the several. figures. l

To enable those skilledin the art to fully understand and construct my invention,vI will proceed to describe it.

A may be termed the shell or case of the device, which is constructed of sheet-metal, bent or swaged in the form shown more particularly in fig. 3, the inner part a being of oval shape, or approximating thereto, iny its transverse or horizontal section, and having two longitudinal franches, b b, projecting out from it, with a space or opening, c, between, (as shown in fig. 2,) and provided at each end with a lip, (l, each of which has a projecting pin or stop, e, and also a hole, f, bywhich the device may be screwed or tacked to the window-casing.

The flanches b b are parallel with each other, so that the space or opening c is of uniform width from end to end; but the outer edges of sai'd flanches are not parallel with their bases, said edges being both in the same plane, but said plane forming a Slight angle with the bases of the lanches, as shown clearly in iig'. 1, the upper parts of the anches being the widest or deepest, and gradually decreasing in width or depth from their upper to their lower ends;

Within the shell crease A, there is fitted a slide, B, which is allowed 'to work or move freely, and is prevented from casually slipping out of the shell or case by the pins or stops e e.

This slide is constructed'of metal, and it is tapped to receive a screw, g, which passes through the space or opening e, between the two anches b' b, into the slide B, and also passes through a cap, 71, which is fitted over the outer edges ofthe ilanches b b.

The outer part of this screw g, beyond the cap li.,- has a smooth periphery, and on this smooth suiface a pulley, fi, is fitted, and allowed to turn freely; andthe outer end of the screw, beyond the pulley, hasma circular disk, j, permanently attached, by which the screw may be turned through the medium of the thumb and foreinger.

The operation is as follows:

l W'hen the fixture above describedis secured to one side of the window-casing, and the shade-rollerproperly fitted to the upper part of said casing, the roller-cord k is passed around the roller, or around a pulley attached thereto, and also around the pulley 'i of the iixture. rst, necessarily so, inv order to admit of this adjustment of the cord; and the latter is tightened, or brought to a proper degree of tension by shovingdown the slide B, and, consequently, the pulley t; and when said cord is brought to a proper taut state, the screw g is turned, and the pulleyt' secured rmly in position by the slide B and cap h, said parts, under the action ofthe screw g, serving as a clamp, to hold the pulley. The slide and cap are prevented from casually moving upward and relaxing the cord, in=consequence of the slightly-inclined edges of' the flanches b b. This will be fully understood by referring to fig. l. The inclined edges ofthe ilanches b b preclude the necessity of screwing up very tightly the screw y, after the adjustment of the cord; it should be snugly screwed up, but nottight-ly, as the slide and cap will bind, by the least upward movement, under the pull of the tightened cord le.

This fixture possesses the following advantages:

First, economy in construction; second, durability;

third, non-liability of getting out of repair fourth,

ease and facility in yregulating the tension of the rollercord.

Having thus described my invention,

` What I claim as new, and desire to secure by Let- The shell or case A, provided with the two parallel flanches l) b, having the space or opening c between them, and provided withinclined outer edges, in combination'with the slide B, fitted within the shell or case, the cap h, and the screw g, all arranged to operatesubstantially in the manner as and for the purpose set forth.

' JOHN DOYLE. Witnesses:

A.R. HAIGHT, J mns HUNTER.

The roller-cord l.: will, of course, be slack at y

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