Патент USA US2405908код для вставки
Aug. 13, 1946. A. E. slLco'x ' v . 2,405,908‘ BEAM DRIVING MECHANISM FOR SLASHER ' _ Filed April 18, 1944- s Sheets-Sheet 1 > Aug. 13, 1946. ' I A. E. slLcox ' 2,405,908 BEAM DRIVING MECHANISM FOR SLASHER ZFil-ed April 18, 1944 _ Sheets-Sheet‘ 2 Aug- 13, 1946; A. E. svuQcoX' ' M35308 BEAM DRIVING MECHANISM FOR SLASHER ‘ Filed April 18, 1944 .3 Sheets-Sheet s Patented Aug. 13, 1946 UNITED STATES’ ATENT OFFICE 2,405,908 BEAltI DRIVING MECHANISM FOR SLASHERS Arthur E. Silcox, Biddeford, Maine, assignor to ' Saco-Lowell Shops, Boston, Mass, a corpora tion of Maine Application April 18, 1944, Serial No. 531,583 9 Claims. (01. 28—-39) 1 2 As is well understood by those familiar with the sizing machines known as “Slashers,” the Fig. 3 is a vertical, sectional view taken approx imately on the line 3—3, Fig. 1. Preliminary to a detailed description of the construction shown in the drawings, it may be pointed out that this invention proposes to solve the problem above described by providing two friction mechanisms for driving the loom beam, one through a considerably higher speed range than the'other, and to devise means for automati callv shifting the drive from one mechanism to the other at an intermediate point in the building of the yarn body on the beam. Thus the slip and the resultant amount of heat created and of Wear produced on the friction surfaces, will be main tained within reasonable limits in both mecha nisms. Referring ?rst to Fig’ 1, the 100m beam is in dicated at 2, supported on an arbor 3, one end of which extends loosely into the driving shaft 4, while the other end is mounted in the usual size and squeeze rolls in the size box revolve at a constant speed and, consequently, pull yarn forward from the creel at a constant rate. The delivery roll or drag roll at the opposite end of the machine is connected with the driving mechanism for the rolls associated with the siZe box so. that it takes up the yarn at exactly the rate at which it is delivered by the size rolls. 10 However, the loom beam on which the yarn is wound immediately after leaving the delivery roll must revolve at a constantly decreasing speed as the diameter of the yarn body on it increases, For this reason, while the size and delivery rolls 15 are positively driven, the loom beam is driven through a friction mechanism so. arranged that, ‘ as the pull exerted on the yarn by it tends to increase with an increase in the diameter of the beam, the friction mechanism yields or slips 20 sufficiently to prevent the loom beam from remanner in a hole in a Shaft supported at the 0D volving any faster than is necessary to take up posite side of the machine. The arbor carries an the yarn fed to it by the delivery roll. arm 5 arranged to engage a stud 6 secured in a In such an arrangement there is Very little face plate 1 which is ?xed on the driving shaft slippage in the friction driving mechanism for a 25 4, these connections serving to revolve the beam time immediately after the winding of the yarn in unison with its driving shaft. on the loom beam starts, but as the yarn body The usual mechanism for revolving this shaft gradually builds up, the speed of the beam arbor comprises a gear 8, Figs. 1 and 2, meshing with slows down, with a corresponding increase in the another gear l0 fast on a shaft l2v and driven amount of slip in the friction mechanism, 30 by a pinion i3 on the shaft M, Fig. 2. This The modern tendency to use beams with larger Shaft t2 drives the delivery roll 9 and its driving heads, and thus to build up yarn bodies on them pinion i3 is connected with the mechanism for of greater diameter, creates a, condition in which driving the size rolls at the same surface speed the slippage becomes very high as the winding as the delivery roll, for the reasons above de operation on the beam nears completion, with 35 scribed- _ the result that the friction mechanism overheats Keyfed _t0 the Shaft 4 are the hub‘ sectlon? of and the friction plates are subjected to excessive two fnctlon disks '5 and '6' The geat' 8' how" wean . . ., The present Invention. qeals Wm? the problem ever, revolves freely on igiese hub SeCt]l0nS,1atl'éd it carries in rotation wit it two circu ar p a s a- and I), both lying close to the inner surfaces presented by these conditions and it aims to de- 40 t1 f _ t. 1 t '5 d '5 O t vise a driving mechanism for the loom beam in Cir 16 respectlve nc Ion p a es an 'u I which the tem , _ _ perajtut'es ainfi rate of Wear crfeaJPed side the latter plates are two additional disks i1 and 18 which also lie close to the outer surfaces in it will be held within-entirely reasonable limits. of the respective friction plates |5 and m and The nature of the mventlon will be Teadlly 45- are connected with the edges of the respective understood frem the following description When plates 11 and b to revolve with‘ them. These out read in connection With' the accompanying draWside disks have hub sections revolving freely on ings, and the novel features will be particularly the shaft 4. The friction plates l5 and iii are pointed out inthe appended claims. surfaced with clutch facing material, and means In the drawings, 50 is provided for forcing all of these revolving ele Fig. 1 is a front elevation of a loom beam and ments together so as to press those positively‘ a friction driving mechanism therefor organized driven ?rmly against the plates l5 and it which, in accordance with thisinvention; as above mentioned, are keyed to the shaft 4. Fig. 2 is a left-hand end View of the construcConsequently, when this action has been pro tion shown in Fig- 1; and 55 duced the shaft will be picked up and revolved 2,405,908 3 4 through the frictional contact of those parts at opposite sides of the respective plates 15 and IS cooperates with a spring 41 to control the posi tion of a latch or stop lever 42, pivoted at 43. During approximately the ?rst half of the wind with these plates themselves. The mechanism for so forcing these plates and disks together comprises a friction lever 20, Figs. ing operation the foot 44 of an upright rack bar 45 rests on the upper end of the latch 42, as clearly shown in Fig. 3. A spring 43 encircles this rack’ bar and tends to force it downwardly and the rack teeth mesh with a pinion 49 fast on a shaft 41, Fig. 3, carrying the eccentric pivot 1 and 3, fulcrumed at 2| on a bracket 22 rigid with the machine frame. A weighting mecha nism is provided to force the upper end of this lever toward the right including a disk-like head 23, integral with a graduated arm v23’ onywhich 10 pin 24. weights 25 and 26 are mounted for adjustment, Referring again to Fig. 3, it will be seen that as the head having an arm 21, Fig. 2, projecting the winding operation progresses and the diam laterally therefrom and arranged to engage the eter of the yarn body on the beam 2 increases, left-hand side of the upper end portion of the the roll 40 will be forced downwardly, thus grad friction lever 20. This head 23 is mounted on a 15 ually pushing the upper end of the latch 42 out pivot stud 24, Fig. 3, to swing freely thereon. wardly, or toward the right, until it ?nally re Thus the weights 25 and 26 operate through leases the foot 44. At this point the spring 46 the connections just described to force the lever 20 against the friction ring 23, Fig. l, which forces the rack bar 45 down, thus revolving the shaft 41 through an angle of approximately 180° crowds the latter against the disk l8 and them 20 in a counterclockwise direction, Fig. 1, and there by brings the friction mechanism into action, by causing the eccentric pin 24 to carry the head causing it to revolve the shaft 4 and the beam 2. 23 bodily to the left. This moves the arm or The mechanism above described is like that prong 21 of the head 23 out of contact with the heretofore used, except for some certain modi friction lever 20, and brings the'o-ther arm 2'!’ ?cations in the part 23 and its mounting provided 25 of said head into engagement with the right for the purposes of this invention, but it operates hand side of said lever. Such action shifts the in the same manner as does the prior art mecha pressure of the lever 20 from the collar 28 to the nisms to revolve the beam 2, and it has the same collar 28' of the second friction mechanism, and limitations as do the prior art constructions. thereby transfers the drive from the mechanism According to this invention the shaft 4 is ex 30 which has been performing this function to the tended to the left, as shown in Fig. l, and an other mechanism which, as above pointed out, is other friction mechanism like that above de driven at a slower speed. The latter thereupon scribed is mounted on it but is driven at a much takes over the function of driving the loom beam slower speed. This second friction drive com and continues to do so until the winding opera prises a gear 30, considerably larger than the tion has been completed. gear 8, and driven by a much smaller gear 3| At this time the full beam is removed from fasten the shaft 12 above referred to. The parts the machine and is replaced with an empty one. of this mechanism corresponding to those of the When the yarn ends have been secured to the previously described friction mechanism are des latter and the winding operation is started again, ignated by the same, but primed, numerals, and 40 the presser roll 34 is eased up to meet the beam, these parts are associated with the shaft 4 in the thus causig the arm 33, Fig, .3, and the roll 4|] same manner as are the parts of the ?rst friction to raise the rack bar 44 to its initial position, as mechanism. Also, the lever 20, above mentioned, shown in said ?gure, where it is again caught and cooperates with a collar 28’ like that shown at held by the latch 42. Simultaneously with this 28, to bring the second friction mechanism into action the eccentric pin 24 is swung back in a action to drive the shaft 4 and the beam 2 when clockwise direction into its initial position, as the lever is swung to the left, Fig. l. shown 'in Fig. 1, thus moving the arm 27’ out Mechanism is provided to shift the drive auto of contact with the friction lever 23 and bringing matically from the right-hand friction mecha . the other arm 2'! back against the left-hand side nism, Fig. 1, to the corresponding left-hand of that lever, as illustrated in Fig. 1. This re mechanism when the yarn bodyon the beam has ' stores the parts to their initial relationship, with attained approximately a predetermined diam the drive for the beam on the higher speed mech eter. Preferably this result is accomplished anism. The cycle of operations above described through the action of the press roll. That is, is then repeated. the machine is equipped with the usual press roll It will be evident from the foregoing that this mechanism which includes a bracket 32, Figs. 1 invention overcomes the di?iculties experienced and 3, carrying a pair of small front rolls 33 with the prior art drive since it divides the driv and a corresponding pair of rear rolls, these two ing operation between the two mechanisms, one sets of rolls supporting a larger press roll 34 operating at a speed suited to the requirements which is held continuously against the peripheral of the building of approximately the ?rst half surface of the yarn body on the beam during the 60 of the yarn body and then automatically shifting winding operation. For this purpose the bracket the drive to the other mechanism which operates 32 is mounted on an arm ?xed to a square shaft at a lower speed suited to the requirements of 35 which projects beyond the right-hand end, Fig. completing the winding operation. Thus the fric 1, of the parts there shown; and a long lever arm ' tion created in each mechanism is moderate, the is ?xed to the outer end of said shaft and ex wear on the friction surfaces is reduced to sat tends backwardly toward the creel. Normally it isfactory values, and the shift from one to the lies approximately horizontally and it carries an ‘ other takes place entirely automatically without adjustable weight which operates through the any attention on the part of the machine oper connections just described to force the roll 34 70 ator. upwardly. While I have herein shown and described a An extension 36, Fig. l, of the presser roll shaft preferred embodiment of my invention, it will 35 is connected with a trip shaft 31, coaxial with be evident that the invention may be embodied the shaft 35, and an arm 38, Fig. 3, fast on said in other forms without departing from the spirit shaft 36 and carrying a roll 40 at its Outer end, 75 or scope thereof. 2,405,908 5 Having thus described my invention, what I desire to claim as new is: 1. In a slasher having means for supporting a nism for automatically moving said control mem ber to shift said drive from the high speed to the low speed mechanisms‘ at an intermediate point in the building of the yarn body on said loom beam for the winding thereon of the sized yarn, driving means for said beam comprising beam. ' two friction mechanisms both operatively asso 6. In a slasher having means for supporting a ciated with said beam to revolve it, said mecha loom beam for the winding thereon of the sized nisms being so organized as to operate by varia yarn, driving means for said beam comprising tions in the degree of frictional slip to drive said two friction mechanisms both operatively asso beam throughout different speed ranges, one l0 ciated with said beam to revolve it throughout higher than the other, and mechanism for auto different speed ranges, one higher than the matically shifting the drive from one of said other, a control member cooperating with said mechanisms to the other at an intermediate mechanisms to throw either into operation, as point in the building of the yarn body on said desired, and simultaneously to throw the other beam. out of operation, spring biased means for mov 2. In a slasher having means for supporting a ing said control member to shift the drive from loom beam for the winding thereon of the sized one of said mechanisms to the other, a latch yarn, driving means for said beam comprising restraining said spring biased means, and two friction mechanisms both operatively asso mechanism for automatically releasing said ciated with said beam to revolve it, said mecha latch when the yarn body on said beam has at nism being so organized as to operate by varia tained substantially a predetermined size and tions in the degree of frictional slip to drive said thereby shifting said drive from one of said beam throughout different ranges of speed, one mechanisms to the other. ‘ substantially higher than the other, and means 7. In a slasher having means for supporting a for shifting the drive from the higher to a loom beam for the winding thereon of the sized the lower speed mechanism automatically in yarn, driving means for said beam comprising response to an increase of predetermined magni two friction mechanisms both operatively asso tude in the diameter of the yarn body on the ciated with said beam to revolve it, one at a beam. higher speed than the other, a lever operable 3. In a slasher having means for supporting a to shift said drive from one of said mechanisms loom beam for the winding thereon of the sized to the other, weighting means acting on said yarn, driving means for said beam comprising lever to produce the friction utilized in each of two friction mechanisms both operatively asso said mechanisms in driving the beam at either a ' ciated with said beam to revolve it, said mecha high or low speed, and means responsive to nisms being so organized as to operate by varia- ‘ changes in the diameter of the yarn body on tions in the degree of frictional slip to drive said said beam as the winding operation progresses beam throughout diiferent ranges of speed, one to shift said lever from one position to another substantially higher than the other, and mecha nism for automatically shifting the drive from the higher to the lower speed mechanism when the yarn body on said beam has attained sub and thereby to change the drive from the higher speed to the lower speed. 8. In a slasher having means for supporting a loom beam for the winding thereon of the sized stantially a predetermined size. yarn, driving means for said beam comprising 4. In a slasher having means for supporting a two friction mechanisms both operatively asso loom beam for the winding thereon of the sized ciated with said beam to revolve it throughout yarn, driving means for said beam comprising 45 different speed ranges, one higher than the two friction mechanisms both operatively asso other, a lever mounted between said mechanisms ciated with said beam to revolve it, one at a sub for applying pressure to either of them, as de stantially higher speed than the other, a presser sired, and thereby selectively bringing either into roll mechanism acting on the yarn body on said operation to drive said beam, a weighting mecha beam during the winding operation to compress nism acting on said lever to apply ‘pressure to and compact the yarn, and means controlled by either mechanism, and means operable auto the position of the presser roll as the winding matically in response to an increase of prede operation progresses for shifting the drive auto termined magnitude in the diameter of the yarn matically from the higher to the lower speed body on said beam to shift the action of said mechanism when said yarn body has attained weighting mechanism from one side of said lever substantially a predetermined size. to the other and thereby to shift the drive of 5. In a slasher having means for supporting a said beam from one of said mechanisms to the loom beam for the winding thereon of the sized other. yarn, driving means for said beam comprising 9. In a slasher having driving means for the two friction mechanisms both operatively asso loom beam as de?ned in preceding claim 8 and ciated with said beam to revolve it, said mecha including a press roll for acting on the yarn body nisms being so organized as to operate by varia on said beam as the winding operation tions in the degree of frictional slip to drive said progresses to consolidate said body, a construc beam throughout different speed ranges, one tion in which said shift of said Weighting mecha higher than the other, a control member cooper 65 nism from one side of said lever to the other is ating with said mechanisms to thow either into initiated by connections controlled by the posi operation, as desired, and simultaneously to tion of said press roll. throw the other out of operation, and mecha ARTHUR E. SILCOX.