US395841A - Chusetts - Google Patents

Description

' 3 Sheets-Sheet 1.

(No Model.)

0. A. LITTLEFIELD.

SHUTTLE CHECK FOR LOOMS.

Patented Jan. 8, 1889.

can

N, PETERS. Phmuihugnphm Washington. n. c

3 Sheets-Sheet 2.

(N0 Model.)

0. A. LITTLEFIELD.

SHUTTLE CHECK FOR LOOMS.

No. 395,841. Patented Jan. 8, 1889.

(No Model.)

3 Sheets-Sheet '3.

.0. A. LITTLEFIELD.

vSHUTTLE GHEGK FOR LOOMS.

Patented Jan. .8, 1889.

N. 9ETERS- Phnlvmlngnpher. Waahiugtnn. D. (L

UNITED STATES PATENT GEEICE.

CHARLES A. LITTLEFIELD, OF FALL RIVER, ASSIGNOR OF ONE-HALFTO ELIAS A. TUTTLE AND JAMES T. MILNE, OF BRISTOL COUNTY, MASSA- CHUSETTS.

SHUTTLE-CHECK FOR LOOMS.

SPECIFICATION forming part of Letters Batent No. 395,841, dated ll'anuary 8, 1889.

Application filed October 29, 1837- To all whom it may concern;

Be it known that I, CHARLES A. LITTLE- FIELD, a citizen of the United States, residing at Fall River, in the county of Bristol and State of Massachusetts, have invented certain new and useful Improvements in Shuttle- Checks for Looms; and I do hereby declare the followin to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

It is well known to those skilled in the art of weaving that great difficulty is encountered when using soft fillin in retaining or holding it upon the spindle of the shuttle when the loom is run at a high rate of speed, the reason being that a sudden stopping of the shuttle in its flight from box to box causes the filling to throw or fly from the spindle. It is furthermore well known that the greatest power consumed by a loom is at its pickingpoint, or the point when the shuttle is thrown from the box.

The object of my invention is to absorb the blow of the shuttle when entering the box, thereby preventing the breaking and stripping of the cop, and to enable the loom to run with a practically open box, the only spring necessary being such as is now used to control the dagger or protecting-rod, thereby lessening the amount of force actually required for the propulsion of the shuttle.

I have illustrated my invention by the accompanying drawings, in which Figure 1, Sheet 1, is a front view of a loomframe with my invention attached thereto. Fig. 2, Sheet 2, is an end view of aloom-frame with my invention placed thereon. Fig. 3, Sheet 3, is a face view of my improved shuttle-check. Fig. at, Sheet 3, is a rear view of the same. Fig. 5 is a cross-section on line sea; of Fig. 3, partly in elevation. V

In the several views like letters refer to similar parts throughout the drawings.

In the said drawings, A designates the loomframe; A A, the sides thereof; E the laybeam; B, the lay-swords; B, the lay-cap; D the cam-shaft; I), the picking-cams or tappets thereon; D D, the picking-bowls; D D the picking rock-shafts; d d, depen ding arms Serial No. 253,707. (No model.)

on the said shafts; C 0, the picker-sticks, and (l d the picking-straps, all of which parts are or may be constructed and operated in the usual manner.

In practice I shall, when necessary, employ a spring or springs to assist in moving the picker-sticks C C toward the outer extremities of the shuttle-boxes, as shown and described in my application for Letters Patent for improvement in parallel foot-motion shuttile-check and power-saver, filed November 1, 1887, Serial No. 253,954

At each side of the loom I apply to the side frame, A, a stock, B, secured to the said side frame with capacity for adjustment toward and from the front of the loom by means of a bolt, Z), passing through a slot in the said stock, as clearly shown in Fig. 2 of the drawings. Through the lower end of the stock passes a stud, k, fastened in place by a pin, m, extending through both stock and stud. Upon the stud, next the side of the stock B, is a metal washer, m, in contact with which is a washer, j, of cloth, leather, or other suitable friction-creating material.

Between the Washer j and a second one of similar character is placed upon the stud k a ratchet-wheel, K, which preferably is dished or recessed on one side, as shown, to receive within the recess the washer j on that side; or it may be dished or recessed on both sides to receive both the washers jj. A nut, 4%,

turned on the threaded end of the bolt lo,

serves to compress together the washers and ratchet-wheel K. Upon a reduced or turneddoun portion of the nut a is mounted to turn a lever, F, carrying a pawl, G, pivoted on a stud, g, carried by the said lever and held pressed into engagement with the teeth of the wheel K by means of a spring, F.

The lower end of the lever F has connected to it by a link, 71, a collar, H, preferably made open 011 one side, as shown in Fig. 5, to adapt it for ready application to the arms 01 d of the rock-shaft D The said collar is applied to the said arm at a proper and convenient distance from the shaft 1) and clamped thereon by the screw H.

The proportions and connections of the various parts are to be such in practice that during each imvard movement oi? the arm d or (t and picker-stick (l or t) the pawl (i will move bacluvard over the wheel ii a distance more than one tooth, but not quite t'ar enough to pass and engage with the end ot' the following tooth.

In practice I have found it most (i-onvenient to cause the pawl (l d tiring the inward movement of the arm and the picket-stick to move backward over the wheel K a distance equal approximately to one and three-fourths tooth. In operation, after the throw of the shuttle, the picker-stick will be arrested in its movement toward the outward extremity of the shuttle-box by the engagement; of the pawl with a tooth of the ratchet-wheel, and will be held therelJy at a short distance from the end of the box. After the shuttlehas entered the box at the end of its flight from the box on the opposite side ot' the loom, it will strike against the picker and carry the latter and the upper end of the picker-stick outward with it. The rctaidation ot the rotation of the ratchet-wheel occasioned by the frictioncreating devices, however, will cause the st iek to resist the advance of the shuttle, and thus bring, the latter to a state of rest without undue shock. lily the means described I arrestthe outward movement of the picker-stick before the latter has entirely reached the out-er limit of such movement and hold it ina yielding manner, so as to cause it to receive the shuttle in its flight across the loom from the box on the opposite side and gradually cheek and destroy its movement. This enables me to dispense with the great pressure ordinarily applied to the sides of the shuttle to check its momentum as its enters the shuttle-box and prevents the stripping of the cop frequently occasioned by the sudden arrest of the shuttle at the end oi its tiight across the loom.

The reduction in the pressure applied to the shuttle in the box enables the shuttle to be thrown with a much less expenditure of power, and renders unnecessary the enu'iloyment of the relief mechanism heretofore de- I picker-stick, the picker-stick being thereby stopped in the outward movement and held at a slight distance from the extreme end oi the said movement and in position to receive the shuttle and. cheek it in, its flight from the opposite box, since such combination forms the subject oi? claims in my other application hereinbelore mentioned.

The shuttleanotion which I have illustrated in the accmnpanying drawings is a common form in very extensive use. I have shown the same merely for the sakeoij' convenience. Itis to be understood that in place oi? being, applied to the arms (I (l the collars ll may be applied to any equivalent arms or levers forming part oi any other usual or suitable shuttle-1notion, due care being exercised to properly adjust the connections so as to secure the proper operation of the cluacking devices.

The general cllarzu-ter oi the shuttle-motion in connection with which the checking devices are employed is immaterial so long as the shuttle-motion is provided with the arms (I d ortheir equivalent. Upon the stud it, outside the nut II, is turned a nut, a, the same serving not only as a check-nut for the nut 11, but as a means of holding the lever F in place upon the reduced portion of the nut 12.

Having describml my invention and the best means with which I am aetmainted for red ucing' the same to practice, I claim as oi? my ii'ivention and desire to seeureljiy Letters Pa to i l t I]. The combination,with a vibrating arm or lever ot a sliuttle-motion and the pickerstick coi'lneeted thereto, ot' the lever F, conneeted. to the said 'vibrat ing arm or lever, the pawl G, the wheel K, and devices for irictionally retarding the rotation oi? the said. wheel, the combination bei ng constructed and operati ng substantially as described, and serving to arrest the picker-stick in its outward movement lm't'o're it reaches the extreme ot' the said movement and hold it there in position to arrest the flight of the shuttle.

The ('(nnbination, with a vibrating arm or lever ot' a slutttlc-inotion and the pickerstick connected thereto, oi the lever F, the link 71, the collar ll, means for adjustably se curing said collar upon the said arm or lever ot' the shuttle-motion, the pawl G, the wheel K, and devices for trietionally retarding the rotation oi the said wheel, the combination being constructed and operating suliistantiall y as describtal, and serving to arrest the pickerstick in its outward movement before it reaches the extreme of the said movement and hold it there in position to arrest the flight ot' the shuttle.

3. The cmnbjii'lation, with a vibratory arm or lever of a shuttle-motion and. the picker-stick co n n ccted thereto, 0 t? the collar 1 I, the set screw II, the link 71-, the lever 1 the pawl G, the wheel K, and devices for itrictionally retarding the rotation of the said wheel, the eombination beingconstructed and OPGl'thll'lg substantiall y as described, and serving to arrest the picker-stick in, its outward. movement hefore it reaches the extreme oi? the said move ment and hold it there in position to arrest the iii ght ot' the shuttle.

4-. The combimttion, with the wheel K and devices for trietionally retardin the rotation oi the said wheel, of the pawl G, the lever F,

the link 72, thecollar II, and means for clamp ing the said collar in place upon a vibrating by the nut n, and the pawl G, all substan- 1o arm or lever of a shuttle-motion, all being as tially as described.

and for the purposes set forth. In testimony whereof I affix my signature in 5. The combination, with the stock B and presence of two witnesses. v l Y 5 stud it, of the w ashe1 m the f1lCtlOllashels CHARLES A LITTLEFIELD jj, the wheel K, the nut 02, having a reduced exterior portion, as described, the check-nut \Vitnesses:

" n, the lever F, mounted upon the reduced L. V. HOWES,

portion of nut n and held in place laterally LOUISE E. RAMSEYER.

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