US517043A - Aed fawcett - Google Patents

Description

(No Model.)

H HIBBERT,R. FAWGETT' & J. WORTHINGTON.

. TENSION DEVICE.

1x05110425; Y Patented Mar. 27, 1894.

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HENRY HIBBERT, RICHARD FAWCETT, AND JOHN WORTHINGTON, OF PRESTON, ENGLAND.

TENSION DEVICE.

SPECIFICATION forming part of Letters Patent No. 512,043, dated March 27, 1894. Application filed August 10, 1893. Serial No. 482.794. (No model.) Patented in England November 10, 1891, No.19,487-

to which it appertains to make and use the same, reference being had to the accompanying drawings, and to figures of reference marked thereon, which form a part of this specification.

This invention relates to tension devices,.

particularly such as are applied to spinning mules.

The purpose of this invention is to vary the tension upon the yarn, and cause it to be greatest when said yarn is passing upon the largest diameter of the cop, conversely the least upon the smallest diameter of the cop.

This invention has special reference to the copping motions of self-acting spinning mules and provides for automatic variation of the tens on upon the yarn in the formation of a cop 1n such manner that the tension shall be greatest when winding-on the largest diameter of the cop, and be gradually diminished until the winding-on reaches the point or smallest diameter of the cop.

In the accompanying drawings, Figure 1 illustrates the arrangement of the improved apparatus as above described in side view; showing the position of the parts when the carriage is in readiness to advance. Fig. 2 shows part of the same in plan view. Fig. 3 1s a view similar to that in Fig. 1, showing the position of parts when the carriage has reached its outermost stretch and the tension is greatest, and Fig.- 4. a part of the same in plan vlew. Fig. 5 is an end view of the parts shown in Fig. 4..

In carrying out our invention we have represented at 1 a cop in process of formation with the yarn at 2, passing about its smallest 50; diameter. The stripping or counter-taller arm or sickle so termed, is shown at 3,

while to uphold the same and in lieu of the weights heretofore in use, we employ a helical spring. The counter-faller rod is at tand the copping faller arm at 5, while a projecting bracket or finger at 6 is fastened to the counter-faller rod 4. The coiled spring 7 which serves to uphold the stripping arm 3 in the present instance is attached at its upper end to the finger 6 and at its lower end to the outwardly projecting arm of the bellcrank lever 8 mounted on the arm 9 of the bracket 10 affixed to the front of the mule carriage 11.

Journaled on a stud secured in the pendent arm of the bell-crank lever 8 is an anti-friction roll 12 while a vertically arranged rock lever 13 with its fulcrum at 14 is pivoted to the arm 15 of the bracket 10. The lower end of the rock lever 13 may be conveniently fitted with an adjustable sliding shoe 16, for facility of adjustment. Moreover attached to the floor 19 is a bracket 18 while a long arm or bar 17 is pivoted thereto. Laterally affixed to said bar is a stud 20 which rests on the inclined face of a vertical plate 21 carried on a horizontal arm 22 projecting from one side of the nut 23 which engages the screw threaded spindle 24. This latter is revoluble and is carried in the stand or pillar 25 of the bracket 26, the latter being likewise fastened to the floor 19.

Affixed upon the outer end of the spindle 24 is a ratchet wheel 27 havingaclick or pawl 28 which is pendent from one end of the pivotal lever 29 mounted on the stand 25; the opposite and free end of the said lever is adapted to contact with the under side of the bent arm or diagonal finger 30 at each outward movement of the mule carriage, thereby lifting the operating click or pawl 28 to impart a slight rotation to the ratchet wheel and the spindle. Torender the ratchet wheel 27 inoperative when the nut 23 has been moved the required distance upon the spindle, or such as will raise the bar 17 sufficiently to give the necessary tension, we provide a bent finger 31 which moves the pawl 28 clear from the ratchet wheel. It will be understood that movement of the nut 23 serves to raise the long pivoted bar 17 and thereby produces the varying tension. The screw threaded spindle may be rotated manually in either direction through the medium of a handle on the squared end 32 of the said spindle 24.

The action of the apparatus is as follows At the commencement of a fresh set of cops on the bare spindles the ratchet wheel 27 is wound back until the stud on thelong pivoted arm 17 has worked down to the bottom of the inclined plate 21 carried by the screw nut whereupon the long arm will have assumed a horizontal position (see broken lines at Fig. 1). The mule having been started the lower end 16 of the rock lever 13 at the front of the carriage rests upon the upper face of the long arm 17 below and assumesa diagonal position relatively thereto and while moving outwardly with the carriage, is inoperative. When the carriage has reached the end of its stretch or forward movement, the lower end 16 of the rock lever 13 will have passed beyond the outer end of the long arm 17 the rock lever 13 thereupon assuming a more or less vertical position the rear part of the upper end of the said lever resting against the friction roll 12 on the lower part of the bellcrank lever 8. Fig-s1 and 3 show in full and broken lines the varying positions and action of the rock-lever 13, the bell-crank lever 8, and the spring 7 when the long arm 17 is in its highest and lowest positions respectively. Meanwhile the ratchet wheel 27 will by the actuation of the carriage and the bent arm 30 on the lever 29 and click or pawl 28 have been partially moved round thus moving the screw nut 23 farther from the said ratchet wheel and causing the inclined plate 21 to press against the under side of the stud 20 and thus partially raise the outer end 33 of the long arm 17. At each succeeding stretch of the carriage the operation as above described is repeated until the cop bottom has been fully formed and its maximum dia1neter attained by which time the bent finger 31 (see also Fig. 3)' connected to the screw nut 23 will have moved the click or pawl 28 clear of the ratchet wheel 27, which along with the screw nut 23, inclined plate 21 and long pivoted arm 17 will remain stationary until the cop l is completed, the outer end 33 of the long arm 17 having meanwhile been gradually raised until it now assumes an inclined or sloping position. The upper face of the long pivoted arm at its outer or free end 33 is sloped off and the bottom of the lower arm of the rock lever 13 is rounded to facilitate the sliding up of the foot 16 of the said lever on to the face of the long arm in its raised or inclined position. As the mule carriage gradually recedes the foot 16 of the rock lever 13 first slides up to the highest point of the inclined long arm 17 where it exerts its greatest action upon the bell-crank lever S and draws the helical spring 7 to its greatest tension and by that time the copping'faller wire has reached the greatest diameter of the cop the tension on the spring 7 and therefore the upward pressure of the wheel 27 and attendant mechanism for gradually raising the outer end of the long arm 17 during the formation of the cop bottom as above described need not necessarily be employed although its use especially when spinning fine numbers is desirable. When the said apparatus is not employed the inner end of the arm 17 need not be pivoted and the outer end of the said arm is set or fixed permanently at the required height in the first instance, the said long arm therefore remaining stationary at one uniform slope or angle of inclination throughout the entire building of the cop.

What We claim is 1. In a tension device for spinning mules, the combination with a counter faller wire, of a spring to actuate the same in one d1rection, a lever to which said spring is con nected, and means for changing the position of said lever, whereby the tension on the said spring is varied so as to be greatest when the yarn is being wound upon that portion of the cop which is largest in diameter, and least when the yarn is being wound upon that portion of the cop which is smallest in diameter,

substantially as set forth.

2. In combination with a cop, a suitable support therefor, and a spring-actuated connter-faller wire, of a bell-crank lever, a pivoted bar for horizontal or oblique adjustment, and a rock-lever adapted to wipe upon the bar with one end and to bear against the bell-crank lever with its opposite end, to produce a constantly varying tension upon the yarn in the act of winding-on, substantially as specified.

3. In a device for automatically varying the tension in winding-on, the combination with a cop, a copping faller-arm and its supporting rod, a counter-taller wire, a bellcrank lever, and a coiled spring interconnecting said faller wire, and bell-crank lever, of a pivotal bar, mechanism for raising one end of said bar duringthe act of winding-on, and a rock lever, one end of which Wipes upon the bar, the other rests against the bell-crank lever, substantially as herein described.

4. In self-acting mules a spring-actuated counter-faller Wire, its bell-crank lever, and a rock lever, one end of which rests against said bell-crank lever, combined with a pivotal bar on which the opposite end of said rock lever rests, a transverse stud in said bar, a revoluble spindle, an inclined plate carried byanut upon said spindle, and mechanism for moving said plate to raise the pivotal bar upon each advance of the mule carriage, substantially as stated and described.

5. In automatic tension devices a mule carriage having a bracket 10, the bent arm 30, bell-crank lever 8, and rock lever 18, all mounted upon said bracket, a series of spin d1es,a copping faller arm 5, a counter-faller arm 3, its rod, and a spring which connects arm 3 with the bell-crank lever, combined with a pivotal bar 17, an inclined plate adapted to raise one end of said bar, a revoluble spindle 24, the sleeve nut 23, and mechanism for rotating said spindle at intervals of time, substantially as specified.

In testimony whereof we affix our signatures in presence of two witnesses.

HENRY HIBBERT. RICHARD FAWOETT. JOHN WORTHI'NGTON.

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