US103084A - Improved curtain-fixture - Google Patents

Description

` lTo all whom tracy concern:

4Be it known that I, FRANKLIN Roo'r, of Chelsea, in thecounty of Suli'olk and VState of Massachusetts, `have inveutedl certain new and useful ,Improvements `in Curtain-Fixtures; and I do hereby declare that the `following is a full, clear,'and exact description thereof, relference being had `to theaccompan'yiug drawings, in 1w iich- `featnresgof 4which are `well known. sists of the roller A, npon'which isa sheave, b, the `bearers a al, the ,cord` and pulley c, and the spring d,', ,tlie latterI `of-whicl-i I usually case,'as shown inthe jley c hasboen held dow-n by a'wedge or by a ratchet and, as it was` `thus ilumovably held, the fixture was 'ffrequentlyout of' order, in consequence of` the expan- .sion or contraction of the cord, which would be either too tight to work easily, `or so loose as `not to hold the in ths'connection.

einer 'eine perenne.

i `Fantini.in ROOT, Or4 loujn-Lena,'MAssaonusnrrs.v

l Letters Patent No.",1'03,084, dated May 17, 1870 cntedated May 9, `1870.

IMPRQVED cURTAIN-rrx'runn.

.The Schedule referred to these4 Letters Patent and making part of the saune.

Figure 1 is a front elevation of my xture.

Figures 3, 4, 5, .and 6 are details.

{Ihe object of my. invention is to improve upon' the methods lby which curtains a1ehu ng, so that a cur- `talnrcan be arranged to cover any desired portion of the window atrwill, whether it be the upper orlower l part, the intermediate space, orthe whole window,

Ythereby admitting thelight and air at the part where ;it is, most needed at`rthe time. The advantages of such an arrangement are well known, and need no ex-` planation,'as` many `attempts have been made vto pro- "duce a-curtain-,fixtlne which lwould give the desired 1res`ult, and with greater or less success.

I make my curtain-fixture in two parts, the general rlhe first part condrawings. y

1n this style of' fixture, `as heretofore used, the pnl'- cnrtainin its place.v `By substituting the spring for the old contrvancesfl am enabled toequalize the t tension upon the cord, whether it contracts or expands, Land thisI consider' au `important `part of my inven- `tion.

`Suspended from theA roller A, usually byV meanslof tapesras shown, "is another form of' curtain-fixture, 1so--arranged that itcan bel raised or lowered -by mea-ns i of the fixture first mentioned, and to raise and lower this fixture is the 'whole fduty performed by the first,

, The second fixture consists of the roller B, to which is attached .the curtain D, and upon which is, a spool, s, with a cord to raise .the curtain.

At each end of' the roller is a sheave, c, round which a cord passes, one end of `which is fhstened'tothe frame, and the. other is'(preferably) fastened to a spring, k, for the same reasons as before specified Yin the case of' the pulley c.

The sheaves fitloosely upon screws or pins attached Y to the rollcr,'as shown, and have upon them shoulders, which serveas journals for the hangers N, by which they are suspended from the tapes.

` Springs n n serve to'press `the sides of these shoul` ders against the roller. l v

The operation of my curtain-fixture is as follows, viz: i

ture, winding or unwlnding the tapes in the saule manner that a curtain would be wound or unwound, thus uncoveringor covering'the upper-portion of the window atpleasure. The pressure of the `sheaves upon ;the rollers (by means of the springs) prevents the curtain from` being unwound by itsV own weight,

and, at the same time, affords ameaus whereby the sheaves, as they are revolved by the cord wound around them, will wind up or unwind the curtain as it is lowered or raised' by the upper fixture, the weight of the curtain and its fixture operating` to revolve the sheaves as the fixture is lowered. L

The friction `is not too great to prevent the curtain from heilig rolled up from the bottom, in the usual way, by means of the cord and spool, at whatever height'the curtain may he held bythe upper fixture. The cord passing around the sheaves ee also Serves to hold the lower fixture close to the window frame. v

I claim as my invention-w` The combination of' roller 'A and sheave b, with roller B and movable hangers N, with sheaves, cords,

and springs, as and for the purpose specified. -F {ANKLIN ROOT.

Witnesses GHAs. F. Snoeren, J. E. MAYNADIER.

The upper fixturel raises and lowers the lowertix`

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