US204001A - Improvement in curtain-roller and bracket - Google Patents

Description

0. BUGKLEY & L. L. SAWYER.

Curtain. Roller and Bracket.

No. 204,001. Patnted May 21, 1878;

onion IMPROVEMENT IN C'UlK -TA'lN-RO-LLER AN 0 BRACKET.

Specification formingpart of jLetters'Patent No. dated'May 21,1878", application filed December 11,1877

To all whom it may concern! Be it known that we, QHAUNCESC BUGKEEY and LODOWIGK L. s mvna; offMe'riden, in the county'of New Haven an'dState of 0on5 n'ecticut, havein'vented a'new'lnrprove'rnentjin Curtain-Fixtures; and we do herebydeclare'the following, when taken in connection'wi'thth'e accompanying drawings and the lettersofreference marked thereon, to be a full, clear, and exact description of the same, which said drawin gs constitute partof thisspecification, and represent, in--' v V Figure 1, longitudinal central section; Figs; 2 and 3,'transverse sections, showing difierent positions, enlarged Fig. 4, modification Fig. 5, the tip for the roll. h v I This invention relates'jlto' an i" 'provement in that class of curtain fixtures commonly called spring-fixturesthat is to say, a fixture having a spring arranged in the curtain roll, to automatically turn the roll thereon, the principal object of the invention being to enable the spring to be wound before it is introduced to the brackets, and hold the spring, to prevent its unwinding when the spring is free from the power which Wound it, and so that the spring will be free when arranged in the brackets, but re-engage when the roll is removed from the brackets; and the invention consists, principally, in an eccentric or cam arranged on the spring-spindle, which will, under certain conditions, engage with the inner surface of the roll and prevent the unwinding of the spring, or hold the winding, or in another condition be entirely free from the roll, and as more fully hereinafter described.

A is the tubular roll, which is formed from Wood or other suitable material, in the usual manner. At one end the tubular roll is closed by a block, B,'which forms a bearing for the spindle G, or, rather, the spindle 0 extends through the block B, and the spindle held stationary forms a bearing for the roll. The spring D around the spindle G is attached by one end to the block B and by the other to the spindle, so that when the spindle is held stationary and the roll turned, as in drawing down the curtain, the spring will be wound, and the reaction of the spring will reroll the curtain. The spindle isheld stationary in the bracket in the usual manner; but if the spring be wound and the roll removed from the bracket, the" spring" would immediately unwind, and require to berewou'nd before it could be placed in the bracket and operate. properly; or in winding the springitwould be necessary to hold theroll-in one hand and the end of the spindle" in the'other'until adjusted in the" bracket, unless there'be some provision for niechanicallyholding the spring.

I To thus' n'1echanicallyhold the spring, the inn'e'r'en'd' of the spindle G is made fastto an eccentric"or'bearinghead;E. The diatneter'of thisec c'entric is silbstantially that of the interior'o'fthe'Tolh buts'o a's to permit the roll to turn freely thereonl- On the spindle, beside theecc'entric'E, acam,F, is hung so'loose as to fall of its own gravity when free, and the relative position of the eccentric E, the cam F, and spindle O is such that when the spindle is engaged with the bracket, the larger diameter of the eccentric will be downward, as in Fig. 2, preventing any possible engagement of the cam F with the interior of the roll, and in that condition the roll turns freely on the spindle. Therefore, to wind the spring, hold the spindle in the position indicated in Fig. 2; then turn the roll until the required tension of the spring is attained; then, if the roll be held and the spindle left free, the reaction of the spring will turn the spindle until the cam F comes in contact with the inner surface of the roll, as seen in Fig. 3, and creating a pressure or friction between the roll and spindle to prevent the further unwinding of the spring then, to place theroll in the bracket, it must be turned so as to invert the cam, as seenin broken lines, Fig. 3, the only position .in which the spindle end will set into the bracket, as hereinafter described, and which is the same position of the spindle as shown in Fig. 2. After the roll is thus adjusted in the supporting-brackets, drawing down the curtain causes the cam to turn with the roll around the spindle until the eccentricityof the cam frees it from contact with the roll;

then the cam will fall to its normal condition,

as seen in Fig. 2; and if then the roll be removed from the bracket and the spindle free,

around as to again engage the roll, a stud, a,

projects from the eccentric E, against which such momentum would throw the cam and arrest it.

Instead of making the eccentric the sup portfor the inner end of the spindle, as thus far described, ablock or bearing-head, G, may be introduced and fixed in the roll,the spindle arranged concentrically through it, and the eccentric formed on the spindle by simply introducing a stud, d, into the end of the spindle and hanging the cam F thereon, as clearly seen in Fig. 4, and the operation will be substantially the same, it only being essential that there shall be a cam on the spindle, to be free from the roll in one position and engage it in another, as. before described.

Over the end of the roll a metallic cupshaped cap, H, is placed,,as seen in Fig. 1. This gives to the exposed portion of the roll a neat and finishedappearance.

To form a corresponding finish for the other end, as well as to provide for rolls of different lengths, I make a separate and removable tip, said tip consisting of a short section of wood, L, as seen in Fig. 5, corresponding to the diameter of the roll, and on this a gudgeon, l, is formed. Over this gudgeon, and on the port tion L, ametallic cap, P, corresponding to the cap H, is placed, and so as to project over the end of the piece L. That end of the roll then may be cutto give the desired length. Then this tip is placed upon the end of the roll and secured by nails or screws through perforations n in the said tip, and the pr 'ecting part of the cap covers the joint, a 11 as aiding in the connection of the tw This tip is applicable to othe hf fixtures, and gives to the expose i the roll a neat and finished appea We do not broadly claim applying cap to the end of a curtain .15! which the gudgeon extends, as aware, is not new.

We claim-- 1. The combination'of the tubular row, spindle and spring thereon, with a cam loose on the said spindle to engage with the inner surface of the roll, and a bearing-head fixed upon the inner end of the spindle and loose Within the cavity of the roll, substantially as described. 7

2. A tip for curtain-rolls consisting of the wood block and gudgeon, combined with a metallic cap extended over the block to cover the joint, substantially as described.

GHAUNGEY BUGKLEY. LODOWICK L. SAWYER. Witnesses:

CHARLES C. BUcKLEY, J UDSON O. PERKINS.

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