US2189938A - Mechanism for making irregular yarn - Google Patents

Description

Feb. 13, 1940. F. H.BUSS|ERE 2,189,938

MECHANISM FOR MAKING IRREGULAR YARN Filed June 6, 1938 irregular or bunch yarn in a drawing and spin- Patented Feb. 13, 1940 UNITED STAT-Es M KINGIRREGUL YARNmw 1;: .J

Fra.'nk H. Bussiere; Millbury, Mass, assignor of MECHANISM FOR PATE T OFFICE one-half to Mayo Woolen Mills; Inc., Millbury,

H Mass, a-corporation of Massachusetts Application June6, 1938, Serial No. 212,090 sol ima (01.57-38) This invention; relates to the manufacture of after, described and more particularly pointed out in the appended claims.

A preferred form of theinve ntion is 'shown in the drawing, in which l Fig. l is a front elevation of my improved mechanism for intermittently advancingthe roving feed rolls; Y I

Fig. 2 is a plan view,-.looking in the direction of the arrowZin Fig, 1;. I l

Fig. 3 is a partial sectional .plan view, taken along the line 3-3inFig. 1;' 1, H

Figs. 4' and 5 are detail .sectionalfront eleva tions, taken along the lines 4--4 and-5 5 in Fig. 3; and

.Fig. 6 isa diagrammatic side elevation, illustrating the operation of my invention.

I will first describe my improved intermittent feed mechanism and will then describe eration thereof when in use. i v c Referring to Figs. 1 and 2, I have shown a roving feed roll it extending longitudinally of a drawing and spinning machine and having spaced fluted portions H. A freely-rotating upper or pressor roll [2 is associated with each flu-ted portion ll of the feed roll l0. monly provided with a leather orcork surface.

The feed roll i is connected by'bevel gears l4 and i to a short shaft is rotatably mounted in the frame I! of the! machine and provided with a gear l8 engaged by apinion l9freely rotatable and siidable on a fixedshaft 2|].

A gear 22 is also freely rotatable and slidable on the shaft 25 and the gear 22 is continuously.

illustrative-only and may be varied as the mechanism is embodied in different types of machines.

A toothed disc 38 is associatedjwith the gear "I'he spring 31 is of less strength than the spring the op- The rolls ii are com- The gear 24 may be driven in l9, and a pin 31 '(Figs. 3 andl) inthe fixed shaft 20 limits outward sliding movement of the gear l9 and disc under the influence of a coilsprin'g 32. A second toothed disc 351s associated with the gear 22 and faces the toothed disc 30 but is commonly held out of engagement therewith by a coil spring 31 mounted on the shaft 20.no-

tween the discs 30 and 35 as shown irrFig. 3.

Outward movement of the gear 22 and disc 35 is limited by engagement of the hub thereof with a collar or block '40, secured in fi xed position on the'end of the shaft 20 bya clampingscrew 15 An'annular member 42 (Fig. 3) is mounted onthehub of the gear 22 and is retained in position by a locking nut 43. Cam plates 44 (Fig. 5) are mounted on the outer face of the member 42 in position for intermittent engage-T20 ment with a camroll 45, pivotally mounted in the fixed block .40.

Each time the gear 22 rotates, the cam plates M engagethe roll} 45. The gear 22 and toothed responding intermittent forward [movement of the feed roll l0. 1 i

The extent of such movement is determined by the cam, plates M, which may be of different lengths and may cover more or less of the pee riphery of the member 42. By changing cam The axialymovement of the gear 22 when the cam ,plate. 44 engages the roll 45 is somewhat greater than the normal distance between the discs 30 and 35, thus insuring firm feeding con tact of the discs, with the excess axial movement taken up in compressing thespring 32.

In Fig. 6 I have indicated the manner in which yarn. In said figure, I have shown a roving R supplied to the feed roll ID from a beam M'supported in rolling contact with a drum 50,- The drum 5!] is preferably rotated continuously and at constant speed in any convenient manner, as

by a sprocket 5| conn'ectedby bevelgears v52 l to the" constantly rotated shaft 29 previously described and connected by a chain 53 to a sprocket 54 on the drum 5!). While the drum 5i) is thus continuously rotated, the feed roll II] is intermittently rotated as previously described. j

plates, intermittent motions of any desired extent may 'be provided.

my intermittently actuated feed roll may be utilized to produce a satisfactory'irregular or bunch The roving B, after passing through the usual twister head 55 and drawing rolls 60, is delivered through a thread guide 6| and traveler 62 to. a

- bobbin B mounted on a spindle 63, all of these parts being of any usual construction.

' An irregular single yarn Y of the desired draf and twist may thus be produced from a roving R and wound on a bobbin B as-asing'le operation. Such a yarn is, however," somewhat -de' ficient in strength at the bunches, and a stronger and more satisfactory yarn may be produced by feeding a previously spun thread T from a spool S over a guiderod 64 to the yarn Y as it leaves] the drawing roll 65 The thread T will be wound or twisted around the spun yarn Y as the yarn and thread are drawn downward to the traveler E32,. and the thread will add substantial strength to the irregular single yarn produced direct from the roving R.

It is particularly desirable that provision be made for continuously rotating the beam M, as this beam is commonly of considerable weight and is not well adapted to duplicate the quick starts and stops of the feed rcll ill.

Having thus described my invention and the advantages thereof, I do not wish to be limited .to the details herein disclosed, otherwise than .as set forthin the claims, but what I claim is:

1. In a mechanism for making irregular yarn, in combination, a feed roll, a rotatable clutch member, driving connections between said clutch member and said feed roll, a second clutch mem- .member, and means to normally and yieldingly separate said two clutch members.

,2. In a mechanism for making irregular yarn, in combination, a feed roll, a fixed shaft, a clutch .member rotatable on said shaft, driving connections between said clutch member andsaidfeed roll, a second clutch member rotatable and slidable on said fixed shaft, means to rotate said second clutch member continuously, a segmental cam rotatable with said second clutch member, a

' member rotatable on said shaft, driving connections between said clutch member and said feed "roll, a second clutch member rotatable and slidable on said fixed shaft, means to rotate said second clutch member continuously, a segmental cam associated with said second clutch member, a device mounted on said fixed shaft in position for engagement with said segmental cam and effective when thus engaged to move said second clutch member axially into driving engagement with said first clutch member, means to normally and yieldingly separate said two clutch members, and means to hold said first clutch member yieldingly in predetermined axial position for engagement by said second clutch member.

4; 'In a mechanism for'making irregular yarn, drafting and spinning means, a roving beam, a feed roll, means to rotate said roving beam continuously to feed roving to said feed roll, and means to rotate said feed roll intermittently and with momentary starts and stops to feed roving in varying amounts to said drafting and spinning means.

7 5' In a mechanism for making irregular yarn, means to supply roving, means to feed said roving intermittently, means to draft and spin said roving to form irregular yarn, and means to supply a spun thread to said irregular yarn after the. roving, has passed, entirely through the drafting means and during the spinning of yarn therefrom,

said thread being wound about said irregular yarn as saidyarn is being spun.

. FRANK H. BUSSIERE.

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