US2142760A - Spinning, twisting, and analogous machine - Google Patents

Description

Jan. 3, 1939. w. PRINCE-SMITH SPINNING, TWIST ING, AND ANALOGOUS MACHINE 2 Sheets-Sheet 1 Filed April 21, 1938 -Fig.L

71 ,Przizce Smirk BY wad-Warm;

4 7TORNE Y Patented Jan. 3, 1939 UNITED STATES PATENT OFFICE MAC William Prince-Smith, Kcighley, England Application April 21, 1938, Serial No. 203.393

, In Great Britain April 22, 193':

4 Claims.

This invention relates to spinning, twisting and analogous machines, and in particular to machines for the centrifugal spinning and twisting of yarns and threads, of the kind wherein the yarn is fed from drawing rollers through a tube and delivered to a rotating cup, pot, or like yarn holder directly from which the requisite length of yarn has been spun in said yarn holder. The yarn is caused to be wrapped automatically onto an externally'wound package maintained within said yarn holder.

The invention has for its object to enable rewinding of the yarn to be effected irrespective of any breakage thereof during the spinning operation.

Accordingly, a centrifugal spinning or like machine of the kind specified is provided with means to gather the end of the yarn already spun, in the event of any breakage of the yarn during the spinning operation, whereby rewinding oi the yarn is rendered possible.

The invention is illustrated byway oi example in the accompanying drawings, in which Figures 1 and 3 show part of a spindle unit in vertical section, Figure 1 showing the parts during the spinning stage and an end having broken, and

Figure 3 being a similar view of the parts after re-winding of the yarn. Figure 2 is a plan view of Figure 1.

Reference numerals 2| and 22 represent the delivery rollers, and 23 the fixed top beam of the machine. 24 is the spinning cup fitting on to a tapered portion of the spindle 25 which is supported by a bearing bush 26 within a bearing element 26A carried by a stationary rail (not shown).

In rear of the cup or pot 24 is a continuous rail 21 supported by vertical traverse rods such as 28, each taking into a boss 29 on the rail.

Secured to the top beam 23 is a downwardly extending bracket 30, located between the rail 21 and the spindle 25, on which bracket is mounted a slide 3| which projects forwardly at its upper end and has hinged to it at 32 an arm 33 into the apertured forward end of which a pot-eye or yarn guide 34 is screwed, this pot-eye or yarn guide 34 also screwing into the upper end of a tube 35 depending co-axially into the spinning pct 24. 25A is an extension of reduced diameter integral with spindle 25 and projecting axially into the tube 35 toa point above the top of the pot 24.

The bobbin 36 which encircles said tube 35 is supported by an angularly movable yoke 31 taking under'the upper flange oi the bobbin and carried by an arbor 38 mounted horizontally in the slide 3|. Projecting radially upwards and slightly rearwardly from the arbor 38 is a pin 39 which enters an aperture in a latch 40 disposed horizontally on the recessed top of the slide 3| said latch' 40 being notched at 40A to enable it to engage a rib 4| projecting above the traverse rail 21 as shown in Figure 1.

42, 42, are two diametrically opposite pins projecting below the bottom flange of the bobbin 36, and 43 is a fixed stop near the lower end of the bracket 30.

Figure 3 shows an annulus of yarn 24A spun in the pot 24 and that the yarn has broken between it and the delivery rollers around which a 5 lap has formed, and the loose end 243 from the interior of the annulus has been gathered by coiling around the. extension 25A of the spindle 25. On the breakage being observed by an operative, the drive to the delivery rolls is de-clutched and the traverse mechanism is arrested, after which the slide 3| is raised slightly until the weight of the bobbin 36 depresses the yoke'31 and thereby moves the arbor 38 and pin 39 in a counter-clockwise direction, the latter causing the latch 40 to move forward and clear its notched end from the rib 4|.

The slide 3| is then lowered below the traverse rail 21 into the position shown in Figure 3, where it rests on the fixed stop 43, which alteration in position causes the pins 42, 42, on the bobbin to engage the end 243 of yarn and the annulus 24A is thereupon automatically re-wound on to the bobbin.

To re-couple the parts, it is merely necessary to raise the slide 3| above the traverse rail 21 and then raise the bobbin 36 on the tube 35 in order to re-set the pin 39 and latch 40. A new yarn is then brought into the pot which is permitted to continue running until the remaining pots have been filled, whereafter the bobbin in question (which would carry two unjoined lengths of yarn) is dealt with simultaneously with the remainder.

' It is preferable to re-wind on to a bobbin im- 45 mediately after an end breaks, in order to avoid the risk 01 the tube severing the gathered end while the remaining bobbins are filling.

By the above described means the immediate re-winding of the yarn is rendered possible irrespective of whether any breakages oi the yarn occur.

What I claim is:-

1. A centrifugal spinning or like machine, wherein each spindle unit embodies a spindledriven yarn holder, co-axially within which a non-rotary tube is suspended traversably, about which tube a bobbin'is supported in axially adjustable relationship thereto and is provided with means, to engage the yarn for the purpose of initiating its re-winding thereonto after the requisite length of yarn has been spun into the yarn holder, and an extension of the spindle projecting axially into said tube and serving to gather the end of the yarn in the event of a breakage, for the purposes specified.

2. A spindle unit for a centrifugal spinning or like machine, as claimed in claim 1, in which the non-rotary tube and the bobbin associated therewith are disconneetible from the traversing means, substantially as and for the purpose set forth.

as and for the purpose set forth.

4. A centrifugal spinning or the like machine wherein the yarn is caused to be wrapped automatically onto an externally wound package 10 maintained within a yarn holder, including a device within said yarn holder to gather the end of the yarn already spun, in the event of any breakage of yarn during the spinning operation,

whereby rewinding of the yarn may be eifected. 15

WIILIAM PRINCE-Sm.

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