US1322731A - Alonzo e - Google Patents

Description

A. E. RHOADESr PATTERN MECHANISM FOR LOOMS.

APPLICATION FILED APR- s, 1919.

1,322,731 Patnted Nov. 25, 1919.

3 SHEETS-SHEET I.

A. E. R'HOADES.

. PATTERN MECHANISM FOR LOOMS.

APPLICATION FILED APR- 3, I919.

25, 1919. 3 SHEETSSHEET 2.

Patented Nov.

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2 II a F A. E. RHOADES.

PATTERN MECHANISM FOR LOOMS.

APPLICATION FILED APR- 3, 1919.

1,322,753 1 v Patented N 0%. 25, 1919.

3 SHEETS-SHEET 3.

FIG. 4. %JZ/wades. I @f ized for terry looms.

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TIGN, 0F HOPEDALE, MASSACHUSETTS, A COBPORATIPN OF MAINE.

PATTERN MECHANISM iron LOOMS.

Specification of Letters Patent.

Patented Nov. 25, 1919.

7 Application filed April 3, 1919. seria No. 287,303.

To all whom it may concern:

Be it known that I, ALONZO E. RHoAnEs, of Hopedale, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Pattern Mechanisms for Looms, of-which the following is a specification. V

The present invention consists-in unproveinents upon the pattern mechanism set forth in an application for LettersPatent of the United States filed by me September 16, 1918, Serial No. 25%,326. That application relates to a pattern mechanism particularly organ- The pattern mechanism controls the beat-up motion, the let-0E, and the let-hack of 'a terry loom so that in weaving a Turkish towel, for example, plain and terry stripes of, different wldths and different distributions may be woven and the plain weave is compact and properly joined to the terry weave.

The present improvements consist 1n mechanism for varying the extent of the weaving during each repetition of the pattern. That is to say, in weaving Turklsh towels, the present mechanism enables the length of the'towels to be varied as desired without afiecting the capacity of the pat: tern mec ianism to vary the'width and distribution of the plain and terry. stripes.

The present improvements are illustrated in the accompanying drawings, wherein Figure 1, is a plan view of the improved pattern mechanism. Fig. 2,.is a vert cal cross section. Fig. 3, is a vertical longitudinal section. Fig.4, is a side view of one of the pawl lifters. Fig. 5, a perspective view of one of the pawl lifters, Fig. 6, is a sectional detail illustrating the connections between one of the pawl lifters and its supporting mechanism.

In the drawings reference numerals, corresponding to those employed in said prior application, are used to, indicatethe same parts as disclosed in that application. Reference letters are employed to indicate the new parts which are not in said prior application. j p

As in said prior application the'pattern mechanism controls the beat-up motion, the let-back and the let-off of a terry loom through two transmitters l0 and .11, each shown as a lever pivoted at its outer end. Wire 12, leads from the inner end of the forward transmitter '10, to the let-back mo- 5 tion, which in itself constitutes no part of the present invention. It suflices to know that whenever the 1et-back transmitter 10,

is'lifted its motion is transmitted through the wire 12, and the cloth and warp are let back. As soon as the transmitter 10, drops, the let-back action ceases.

A wire .13, leads from the inner end of the rear or terry transmitter 11, to the beat-up motion which in itself constitutes no part of the present invention. It suffices to know that when the terry transmitter'is down the terry weave continues; and, that when said transmitter is'r aised, plain weaving is done. A second wire 14, leads from the inner end of the terry transmitter to the te'ry let-off which through-the movement of the trans mitter 11, is rendered operative during the terry weave and inoperative during the plain weave as set forth in detail in said: prior application. i

The movements of the transmitters l0 and "11, are afiectedin the desired sequence by the pattern mechanism. This mechanism comprises a rotating pattern wheel 55, which carries a series of adjustable cams indicated at. 56, 58 and 59, which cooperate with a downwardly projecting "foot 66, of the terry transmitter 11. The cam wheel also supports an adjustable cam carrier 60, having a series ofcams 61, cooperating with thedownwardly projecting foot 67, of the let-back transmitter 10. The pattern wheel 55, has a hub "53,: which turns on afixed stud 54:. Fastened to the hub of the cam wheelis a'ratchet wheel 52. This ratchet wheel cooperates with a pawl lever 46, pivoted at 47. An actuator consisting of a pawl 51, is pivoted'at 50, to the upper end 49,0f the pawl lever $6. The pawl lever 46, is rocked back and forth in timed relation to the weaving by mechanisnr driven from'the' power shaft of the loom as set forth in the aforesaid application. It suffices to know that the lever 46, is reciprocated so that the pawl 51, at each reciprocation engages one of the teeth of the ratchet wheel 52, thereby feedingthepattern wheel 55 around step by step. Backward slip of the ratchet wheel is prevented bya pivoted I detent 74:. v

V A towel is woven at each rotation of the pattern wheel. By changing the pattern cams 56, 58, 59 and '60, on the pattern wheel,

and by adjusting their cireuinferential posi tions on that Wheel, the locat on and wldth of the plain and terry strlpe's can be varied to suit the needs of the manufacturer.

In all of the i'espectsthusfar mentioned the pattern mechanism here lllustrated 1s like that set forth in the aforesaid priorapthe eniployinentjof controllersfor the pattern cam actuator consisting of pawl lifters A, of varying lengths which are applied to the pattern mechanism so as to render idle the pattern actuating pawlbl, or pattern cain actuator, thereby stoppingthe progressive advance .of the patternwheel for varying intervals and hence varying the length of the towels woven. One of the controllers or pawllifters is shown in detailin Fig. 4-... As shown in this figure and in'Fig. 2,1t sa curved. plate. which extends horizontally over a portion of the teeth of the ratchet 52. The leading end of this pawl lifter isbevleledasshown at B, in Figs 31and 4. Ac-

cordingly, as the ratchet wheel 52,and the pawl lifter advance in the directioniof the arrow shown in'Fig. 3, the pattern actuat- "ing pawl 51, encounters the beveled leading edge B, of the pawl lifter A ,'so that the pawl is lifted awayfroin the teethbf the and maintained. li fted as shown in Fig; 3. Gonsequentlythe pattern actuating pawl 51;, as it is .reciprocated by ratchet 52,

v the pawl lever 4E6, simply rides idly bacl:

' wheel. 7

- pattern wheel 55, remain stationary and are idle so long asthc actuating pawl 1s, ren' and forth upon the pawl lifter A, without imparting any movement to the ratchet Hence, the ratchet wheel and the dered idle by the pawlli-fter A. Inorc er that the pattern actuatlng pawl 51', may again cooperatewith. the ratchet wheel 52, so as to resunie the forward feed 7 slot connection the plate 1),inay be circumof the cam wheel, mechanism isprovided forfeedfing the pawl lifter independently of the pattern cai'n wheel 55. The pawl lifter A, has a flange Qthrough which it is secured to aiatchet plate I), as'indicated in Figs 3 and 6. This plate D, is'adji istably secured by bolts E, and slots vF to the pawl lifter carrier G. By means of this'bolt' and ferentially adjusted upon the carrier G.

The carrier G, has a hub H, which turns freely upon "the hub 53, of the pattern .i'n-ight be inione piece therewithfis vided with aset of ratchet teeth N. These ratchet teeth cooperate with an auxiliary actuator consisting of a lifter pawl 0,

wheel. The ratchet wheel 52, carries a stud I. This stud 1s ,circun'iferentlally adjustable upon the-ratchet wheel by. means of the boltsJ and slots 1Q; Normally, that is to say during the greater portion ofthe T-rotaof the carrier G, is held against the leading .1011 of theratchet wheel '52, therear face L, 7

end of theblock I, by means of a spring M,

connected at opposite ends to the carrier G, and the cam wheel 55, as shown in Fig.2.

Accordingly, during the normal advance of the ratchet wheel 52, the pawl lifter carrier G, is moved forwardly with the ratchet wheel and patterncainsby the stud I; 1 This action continues until the. pattern pawl 51," is encountered and. lifted by the pawl lifterA, v I 1 Thereupon, the pawl. lifter is fed forwardly step by step independently of the ratchet 52 and without imparting any movement-to said ratchet wheel'or tethepattern wheel 55.- For this purpose, the

plate D, which carries the pawl lifter (and prowhich-is pivoted at P, to the. patternpawl 51, and partakes ofits reciprocation. Concurrently with the, advance of the pawl lifter to the position where it renders the pawl 51 idle, the leading tooth N, of the pawl lifter ratchet is brought within reach of the lifter-pawl OI gAccordinglyg as soon as the pawl .51, becomes idle, the pawl O,

becomes active. Thereupon the lifter pawl O, in its reciprocation feeds the pawl lifter 7 and the. parts connected therewith forwardly step by step thus feeding the pawl lifter. beneath the pawl 51,, and carrying the rear faceL, of the pawl lifter'carrier G,

step by step awayffr'oni thestud Land putting the additional tension uponfthe 'sprlng M. Backward movement of the pawl lifter fcarr1er G, under 'the stress of its spring M, is prevented by a secondary V detent :Q, which is pivoted at R, to the primary detent 74.. During this feeding action of the lifter pawl O,"tl1e;ratcl1et wheel 52, and the cam wheel 55, remain stationary, until the pawl lifter A, is fed forwardly beyond the pattern pawl 51. Thereupon the pawl 51, again engages the ratchet 52. Thereafterthe norn'ial feed "of the ratchet wheel 52, and the patternwheel 55, is resumed.

during a periodfollowing the resumption of the action of the pattern pawl 51, the. lifter pawl O, contii'iues to feed the pawl lifter concurrently with the feed of -the ratchet 52, by the pawl 51.' This feeding action'of'the lifter pawl O, continues until As'shown in the pawl lifter A, of smaller circumferential length than the: set of ratchet teeth on thejplate D,'so that the last tooth, of the ratchet plate D, is fed forwardly beyond reach of the detent Q. As soon as this occurs any forward movement of the ratchet plate D, by thelifter pawl O, is neutralized by a corresponding backward movement of the carrier G, through its spring H, as the pawl 0,.in its reciprocation moves backwardly. This idle forward and backward movement of the carrier G," and the pawl lifter continues until the stud I, on the ratchet-wheel 52, catches up with V the carrier G, and. encounters the rear face L, of said carrier. Thereafter the carrier G, and its associated parts is fed forwardly concurrently with the ratchet wheel 52, through the stud I.

The-subsequent forward advance of the pattern mechanism soon carries the carrier G, and its associated parts entirely out of reach of the lifter pawl O, and detent Q. In orderto maintain these parts in position ready again to act proper provision is made. Thepawl O, has a laterally projecting finger S, which overlies the pawl 51, as shown in Figs. 1, 2 and 8 Accordingly, when the ratchet plate F, has passed beyond thepawl 0, said pawl is maintained uplifted by the finger S resting on top of the pawl 51. Likewise, the secondary detent Q, [has a similar laterally projecting finger T, Figs. 1 and 3, which overlies the primary detent 74:, and limits the downward swing of with the ratchet plate D, but less economithe detent Q. 7

The overall length of towels or the extent of each repeat of the weave is dependent upon the circumferential length of the pawl lifter A. By removin the pawl lifter altogether a short length of towel is woven. Towels of greaterlengths can be woven by the insertion of pawl lifters A, of increasing lengths. Figsp l'and 5 illustrate pawl lifters of different lengths;

In order to change the pawl lifters A, the bolts E, are removed. Thereupon the ratchet plate D, with the attached pawl lifter is taken out. The pawl lifter is then detached from the ratchet plate D, and a different pawl lifter is attached thereto.

The ratchet'plate with the new pawl lifter is again fastened to the carrier G, by the bolts 15. The pawl lifter A, might be in one piece cally so, since that would involve as many sets of ratchet teeth as there are pawl lifters of varying lengths. The pawl lifter A, with its attaching flange C, is a simple economicalconstruction so that a large variety of pawl lifters can be furnished at small cost.

The circumferential adjustment of the ratchet plate D, upon the carrier G, enables the ratchet-teeth N, tobe accurately adjusted with respect to the teeth on the ratchet wheel 52. Thecircumferential adjustment of the stud 1, enables it to be poand the length of that portion of the weave is determined by the positions of the first and last pattern cams 56 and 59, on the pattern wheel 55. Inother words, the pawl lifter or controller A, is advancedby the pattern cam actuator 51, concurrently with the pattern cams during the period when said cams are active, at which time the controller is idle. The controller is thus normally. idle. hen, however, the controller functions itrenders the actuator 51, idle,- and the feed of the pattern cams ceases. Thisoccurs when the pattern cams are at an idle or inacth e position. Concurrently with the cessation of action ofthe actuator 51, the auxiliary actuator 0 comes intolaction and advances the controller A without mparting movement to the pattern cams. The lifter carrier G, has a counterbalancin enlar ement U' uiametricall o osite to the pawl lifter.

I claim 2 v 1. A pattern mechanism for looms having a pattern wheel, a ratchet wheel con nected-therewith, a pattern pawl cotiperating with said ratchet wheel to move said pattern wheel, an'da primary detent engaging said' ratchet wheel to prevent backward movement thereof, in combination with a stud moving with said ratchet wheel, a pawl lifter for said-pattern pawl, a pawl ios lifter carrier, a set of ratchet teeth on said carrier, a spring normally holding said pawl carrier against-said stud, a lifter pawl pivoted to said pattern pawl which cocperates with said set of ratchet teeth when said stud brings said set of ratchet teeth into the range of action-of said lifter pawl, a secondary detent pivoted to the primary detent andcngaging said set of ratchet teeth to prevent backward movement of the pawl lifter during the feeding action of the lifter pawl, astop'finger on the lifter pawl overe lying the pattern pawl, and a stop finger on the secondary detent overlying the primary detent. w r

2518. pattern mechanism for looms" hav-' e 5, ing with .said ratchet wheel, a pawl lifter for said pattern .pawl, a pawl lifter carrier,

with a stud moving with said ratchet wheel, a pawl lifter for said pattern pawl, a pawl litter carrier, a set of ratchet teeth on said carrier, a spring normally holding said pawl carrier againstsaid stud, a'lifter pawl pivoted-to said pattern pawl which cooperates with said set of ratchet teeth when said stud brings saidset of ratchet teeth into the range of said litter pawl, and a secondary detent pivoted to theprimary detent and engaging said set' ofi'ratc'het teeth to prevent backward movement of the :pawl lifter during the feeding action of the lifter pawl.

" 3. A patternmechanism for looms having a pattern wheel, aratchet wheel connected therewith, a pattern'pawl cooperating with said ratchet wheel to move said pattern wheel, and a primary 'd etent engaging said ratchet wheel to prevent backward move ment thereof, in combination with 'a stud moving with said ratchet wheel, a pawl latter for said pattern wheel, apawl lifter v carrier, a setiof ratchet teeth on said carrier,

a spring normally holding-said' pawl carrier I against said stud, a lifter pawl which tooperates with said'set of ratchet teethwhen said stud brings said'se't of ratchet teeth into the range of action of saidlii'ter'pawl, and a secondary detcnt engaging said set of ratchet teeth to prevent baclnvard movement of the pawl lifter during the feeding action of the lifter pawl. a Y I L. A pattern mechanism for looms havinga pattern wheel, a ratchet wheel con nected therewith, and .a pattern pawl co operating with said ratchet wheel'to move said'pattern wheel, inlcombination with a r I stud moving with said ratchet wheel, a pawl lifter for'sa-id pattern pawl, a pawl lifter carrier, .a set of ratchet teeth on said carrier, a springnormally holdingwsaid pawl carrier against said stud, a'lifter pawl which cooperates with said set of ratchet teeth when said studjbrings said set of ratchet teeth into the rangeof action of said lifter pawl, and a detent-"eng'aging said set of ratchet teeth to prevent backward movement of the pawl lifter dnrmg the feeding action 7 so of the lifter pawl. r v Y '5. A pattern mechanism jfor'looms having awpattern wheel, a ratchet wheel connected therewith, and a pattern pawl cooperating withsaid ratchet wheel to movesaid pat tern wheel, in combination witha stud mova' set of ratchet'teeth on said carrier, .a spring normally holdingsaid pawl carrier against-said stud, "and' a lifter paw-l'which cooperates with said :set of ratchet teeth :when said stud brings said setof ratchet teeth into the range of action ofsaid lifter pawl. o to V I o V v ;6. A pattern mechanism for looms'having stud moving with said ratchet'wheel', -a pawl lifter for said pattern pawl, a pawl lifter ing With said ratchet wheel to' -move 'said pattern wheel, a ratchet wheelconnected therewith, an actuating pattern pawl 7cosaid pattern wheel, in combinationwith a 7 operating with said-ratchet wheel to mover V carrier, a set of ratchet teeth on said carrier,

which cooperates with said; set of "ratchet teeth when said stnd brings said setot ratchet teeth into'therange of r action of said"lifter'pawl."i 5

.' A'pattern 'i nechanisin "for 'lo'o'ms hav mg a pattern wheelfa ratchet wheel con- 7 nected therewith, a pattern pawl-cooperat-h pattern wheel, anda primary detent engaging said ratchet wheel to prevent backward movement thereof, in combination with a pawl lifter for said patter-n pawl, a pawl.

lifter carrier normally moving with said ratchet wheel, aset of ratchet teeth on said carrier, a li'fter 'pawlpivoted to said pattern pawl which cooperates with said set of ratchet teeth when brought into the range of action of said lifter pawl, a secondary detent pivoted to the primary detent and engaging-said set of ratchet teeth to prevent backward movement of the pawl lifter during the'feeding' action of the lifter pawl,

a stop finger on the lifter pawl overlying the pattern pawl, and-a stop finger on the secondary detent overlying the primary 1 detent. V v v 8. A pattern mechanism forlooms-having' a pattern. wheel, a r'atchet wheel connected therewith, a pattern pawl-cooperating with said ratchet wheelto move said pattern" 7 wheel, and a primary detent engaging said ratchet wheel to prevent backward movement. thereof, in combination with-a pawl 1 05 lifter for said pattern pawl, apawl litter.

carrier normally moving with saidratchet ,wheel, a setv o1": ratchet teeth onsa-i'dcarrier,

a lifterpawl whichcobperates with said set of-ratch'etteeth when said stud brings said set of ratchet teeth into the range of. action ofjsaid'lifter pawl, a secondary detent en'- gaging' sa'idset of ratchet teeth to prevent backward movement ofthe pawl lifterf during the feeding. action of the lifter'pawl, a stop finger onthe lifter pawl overlyingthe pattern pawl, anda stop 'finger 'on' the 7 secondary detent overlying the primary the range 10. A pattern mechanism for looms having pattern cams, and an actuator therefor, in combination with a normally idle controller which is advanced by said actuator concurrently" with the advance of said cams, said controller rendering said actuator idle When said cams are moved to inactive position, and an auxiliary actuator for advancing saidcontroller without imparting movement tothe pattern cams, the pattern cam 10 actuator being idle when the auxiliary actuator is active.

' In witness whereof, I have hereunto signed my name. 7

ALONZO E. RHOADES.

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