US2232489A - Centrifugal spinning, twisting, and analogous machine - Google Patents

Description

Feb. 18, 1941. 2,232,489

CENTRIFUGAL srmume, TWISTING, nn ANALO'GOUS MACHINE W. PRINCE-SM ITH Filed May 25, 1940 2 Sheets-Sheet 1 W? m WWW.

flTTOR/VE) 1941- I w. PRINCE-SMITH CENTRIFUGAL SPINNING, TWISTING, AND ANALQGOUS MACHINE Filed May 25, 1940 2 Sheets-Sheet 2 y F ig. 4.

UNITED STATES PATENT o icE CENTRIFUGAL SPINNING, 'rwrs'rm'o, AND

. ANALOGOUS monnvn William Prince-Smith, Kclghley, England Application May 25, 1940, Serial No. 337,297

- In Great Britain May 15, 1939 3 Claims. (CI. 57-34) This invention relates to spinning, twisting, yarns are directed from the drawing rollers by and analogous machines, and in particular to said stationary yam guid may be non-rotatmachines, forthe centrifugal spinning, twisting, ably disposed concentrically of the yarn guides or the like, of yarns, threads and similar fibrous in respect to which they may be moved collec- I 5 materials, wherein each yarn is traversed ver tively by means of a traverse rail and suitable 5 tically by a. reciprocating guide within a revolvtraversing mechanism. ingyarn holder upon the inner surface of which Each spinning or like unit may comprise an the yarn is laid centrifugally and from which inverted cup-shaped yarn holder having a veryarn holder it is subsequently caused automati- V tlcal tubular stem surrounded by a driving whorl cally to be wrapped on to a bobbin or like exterand secured in ball bearings mounted in an over- 10 nally wound package inserted thereinto from head bracket carried by the machine frame below below and provided with means to engage the and forwardly of the drawing rollers, and held yarn in order to initiate its transfer to the bobin a fixed bracket and projecting through said bin, the yarn delivery means being automatically stem above the p of each o r e e may be stopped for that purpose and the yarn holder a guide tube having in its upper end a pot eye 15 continuing to revolve. constituting a stationary yarn guide.

The invention has for its principal object to Concentrically with and externally of said staprovide a machine, for the centrifugal spinning, tionary guide tube, a second tube may be artwisting or the like of yarns or threads, whereof ranged slidably and m y be Pr v w h a eyethe construction and operation secure a high let at its lower extremity, said second-tube or 20 rate of production without detriment to the traversing guid ing non-rotatable and bein yarns or threads however delicate their nature; slotted vertically to permi its Passage P h another object being to reduce to a minimum the bracket suppor n the stationary yarn guide and strains to which the yarns ar subjected adjaalso to avoid during its reciprocation contact with cent' their delivery point in centrifugal spinning the yarn extending from the drawing rollers to 25 and like machines, the stationary thread guide.

According to the invention, the means for guid- Each tubular traversing uide is supported by ing and the means for traversing the yams in a a bracket extending from a traverse rail carried centrifugal spinning, twisting or like machine of by he usual P n he c n c ion between the kind specified, are so designed and cooperate each guide and its bracket may be de h l -30 that the delivery angle of the yarn to the yarn This detachable connection may consist of a holders remains constant during the building of link r iculated to a horizontal lug secured to the yarn masses within the holders. the pp n of a d tubular guide, wh l 1 To this end, adjacent each yarn holder there y be pr vi d wi h depending D to e reis provided a stationary yarn guide in respect to I ceived by an aperture in the supporting bracket. 35 which a traverse guide is reclprocable within the Further, in order to enable each tubular traverse holder and is shaped so as to avoid, during its guide to be maintained in an elevated position reciprocatory movement, the path or the yarn wh n ne essary or desirable. each gu d m y be extending from the drawing rollers to the yarn formed with a notch at right angles to and at guides, an appropriate height in the vertical slot therein. 4

In one constructional embodiment of the in- The invention is illustrated by way of example vention a centrifugal spinning, twisting or like in the accompanying drawings which show, in machine may be provided with a series of indisectional elevation a portion of a machine frame vidually driven yarn holders into each of which and as much of a spindle unit and its associated 5' a stationary tubular yarn guide and a reciproparts as are necessary to the understanding of cable tubular traverse guide project axially, and the invention as applied to the known type of a series of bobbin supports may be located below centrifugal spinning machine embodying insaid series of yarn holders to enable bobbins or verted cup-shaped yarn holders. like externally wound packages to be manipulated Figure 1 shows the position of the parts at the with respect thereto; completion of the spinning of a yarn mass within 50 These individually driven yarn holders may be a yarn holder, and Figure 2 the position of the 'supportedin overhead bearings carried. by the parts just prior to the commencement of the remachine frame which also supports the stationwindingpperation. Figure 3 is a fragmentary ary yarn guides co-axially with said holders; and plan view showing the connections to the means the reciprocable traverse guides, into which the for traversing the yarn within the yarn holder, 55'

Figure 4 is a fragmentary rear elevation of part of said yarn traversing means, and Figure 5 is an enlarged detail sectional view.

I represents part of the main framework of one side of the machine to which is secured a plurality of brackets 2 supporting a fixed horizontal continuous rail 3. 4 indicates one of the lower front rollers by which the yarn Y is delivered to the respective spindle units.

Secured at intervals along the rail 3 is a number of overhead brackets or cages such as 5, each carrying upper and lower ball bearings 8, 6, whereof the inner races are fast on the tubular stem or neck 1 of an inverted cup-shaped yarn holder 8 supported by the cage 5 and adapted to be driven through the medium of the usual or appropriate mechanism by means of a tape (not shown) passing around a whorl 9 fixed to the tubular stem or neck 1.

Located below and coaxially with each yarn holder 8 is a spindle l0 secured adjustably in a bracket ll fixed to a continuous rockshaft l2 supported at intervals by rack pillars such as 13 mounted so as to be slidable vertically in guides such as H fixed to a stationary continuous rail 15, the rack pillars l3 being actuated by pinions such as I 8 keyed to an operating shaft 11 ex tending along the machine and deriving motion from known or appropriate mechanism not shown.

The upper end of each spindle l0 terminates in a bobbin peg l8 at the lower end of which is a flange I9 upon which a bobbin 20 rests.

2| is a bracket secured to the top of the cage 5 and projecting forwardly so as to maintain a guide tube 22 concentrically within the tubular neck 1 of the yarn holder 8; the lower extremity of said guide tube 22 terminating slightly above stituting a stationary yarn guide.

24 is a traverse rail supported at intervals as 25 and adapted to be operated in the well understood manner by builder or traversing mechanism, and to this traverse rail 24 is secured adjacent to each spindle unit a forwardly projecting bracket 28 which supports a slidable tube 21 concentrically with and externally of said stationary guide tube 22.

This slidable tube 21, which is fitted at its lower end with an eyelet 28, and which constitutes a tubular traversing guide, is formed from its upper end to below the middle of its length with a. vertical slot 29 disposed rearwardly of the tube projecting from the tube and having articulated to it at 32 a link 33 the free end of which is formed with a depending peg 34 receivable by a recess or an aperture formed in the forward end of the bracket 26. The width of the slot 29 in junction with the staionary guide tube 22.

During the operation of the machine the yarn Y, which passes from the periphery of the roller 4 to and through the stationary pot eye 23 and emerges through the eyelet 28 in the tube 21 and, extending radially therefrom at Yl, becomes laid centrifugally upon the inner surface of the revolving yarn holder 8 wherein an annulus Y2 of yarn is built up by the reciprocable movement of the tube 21 actuated by the traverse rail 24 and known builder mechanism, and during this reciprocation of the traversing yarn guide 21, 28, there is no interference with the length of yarn extending between the roller 4 and the eyelet 23, by reason of the vertical slot 29 in the tube 21, with the result that throughout the entire spinning operation the delivery angle of the yarn Y to the yarn holder 8 remains constant and a uniformly minimum strain is imparted to the yarn.

Assuming that the correct length of yarn has been laid in all the yarn holders 8, the tubes 21 are elevated collectively into the position shown in Figure 2 by the manipulation by hand or otherwise of the traversing mechanism controlling the rail 24, and thereafter the bobbins 29 are raised axially into the yarn holders, by means of the rack pillars I3 and associated operating mechanism, the yarn delivery to each yarn holder being automatically stopped by the de-clutching of the front roller towards the end of the ascent of the bobbins, as is known, and the yarn mass in each yarn holder (which is still rotating) is then re-wound onto its respective bobbin, after which the full bobbins are lowered from the yarn holders and spinning is re-commenced. The rewinding and re-starting operations, however, form no part of the present invention and are consequently not detailed.

In the event of a yarn breaking during spinning the operative can deal with the yarn holder concerned, while all the remainder continue spinning, by detaching the link 33 of the appropriate traversing guide tube 21 from its corresponding bracket 26 and by raising the tube notch or recess 30 is aligned with the bracket 26 whereupon the tube 21 angularly to engage the notch with the 21 until the neck of the is turned in which it is retained until the contents of the yarn holder have been removed.

What I claim is:

1. In a centrifugal spinning, twisting or like machine, a stationary yarn guide positioned adjacent each yarn holder, a traverse guide slidably mounted about said stationary guide and into PRINCE-SMITH.-

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