US2020757A - Spinning apparatus - Google Patents

Description

Patented Nov. l2, 1935 PATENT OFFICE' SPINNING APPARATUS Edward J. Abbott, Wilton, N. H., assigner to Abbott Machine Company, Wilton, N. H., a corporation of New Hampshire Application December 29, 1933, Serial No. 704,434

5 Gianna.

This invention relates to spinning apparatus and has for its principal object to provide eiiciently for breaking the thread on the occurrence oi so-called "false spinning in ring spinning machines.

The balloon oi' spinning yarn approaching the traveler of a spinning ring is in the form of a spiral, which under certain conditions tends to collapse and form two small balloons with a node therebetween. The collapse of the balloon is conducive to the yarn catching on the spinning package or .bobbin and winding thereon without passing through the traveler, this occurrence being known as false spinning". In the use of a bobbin having a top head, false spinning may result in winding a bunch of hard twisted yarn iml mediately below the top head ci the bobbin. This bunch must be cut oli before the yarn can be pieced up and spinning resumed, which causes Waste of material and increases the idle time of the spindle. In addition the hard-twisted waste material thus produced and cut oii is not worth as much as the soft waste produced by a normal breakdown in which the sliver Winds around one of the draft rolls without being twisted. The present invention remedies this by providing for breaking the thread almost immediately whenever false spinning occurs.

My copending application, Serial No. 460,130, now Patent No. 1,960,403, discloses that certain relations between length of balloon and length of spinning package will tend to prevent collapse of the balloons and false spinning throughout the machine. Nevertheless, it is desirable to provide for breaking the appropriate individual thread in case false spinning should take place on any one of the many spinning bobbins of a machine, due for example to some inequality or defect in the thread being spun onto the particu- 1 lar bobbin in question.

In the accompanying drawing the invention is shown by way of example as applied to a ring l n portion of a spinning frame containing the im- (lCi. 118-10) ing especially the course of the strand when the ring-rail is at its highest position;

Fig. 3 is a vertical section taken on the line '3 3 of Fig. 1, with the outline of the bobbin `shown in dotted lines; and 5 Fig. iis a horizontal section on line 4--4 of Fig. 3.

Referring to Fig. 1, the strand B is shown as coming from front delivery rolls 8 and 9, through la pot eye or guide I 2, and thence in a balloon 10 formation to the traveler I8 which runs on the ring I'I on the traversing ring-rail 6. Each rol tatable strand receiver, such as a bobbin l, is shown as separated from its neighboring receiver by a stationary separator plate 20 fastened by means of lugs 2| to a stationary rail I0. As disclosed in my said copending application, the separator plates 20 can extend from the thread board II, down to below the bottoms of the bobbins, preferably extending through slots I 9 in the ringrail.

The traveler I8 controls the size of the balloon during normal spinning. In the lower positions of the ring-rail, the spinning balloon may contact to some extent with the separator plates 20, but 25 as the ring-rail rises the balloon becomes shorter, and less outwardly bowed, and with the ringrail at about vthe level of the bobbin top as in Fig.

2 there is no contact of the normal balloon with the separator plates, the primary utility. of the 30 upper portions of -the separator plate being to prevent broken ends of thread from whipping out into contact with neighboring spinning threads.

`Thus it will be observed that around and adjacent to the upper part of the receiver there is 35 a sizeable space into which the ballooning thread does not enter during normal spinning. v

The means for breaking the thread on the occurrence of false spinning may for example take the form of a strand-catching hook 3| in 40 this zone outside of the path of the normally ballooning thread but in position to catch the differently-shaped balloon resulting from false spinning. As herein illustrated, the hook 3| is located adjacent to the level of the top head of 45 the bobbin, at which level of winding the tension aorded by the traveler normally maintains the yarn in a relatively straight path from the pot eye to the traveler. However, in the event that the balloon collapses in the lowermost position of the traveler, is caught by the winding package and begins to wind near the head of the bobbnwithout passing through the traveler, the balloon thus formed is uncontrolled by the traveler and is consequently abnormally Wide for its 56 3|a and another longer end 32a extending in position to catch the balloon produced by false spinning.

Obviously the exact location of the strandcatching means, such as hook 3|, will depend upon the shapes of the normal balloons, being placed out of the path of any normal balloon, but in a position to catch the false-spinning balloon which is uncontrolled by the traveler.

I claim:

1. Spinning apparatus comprising a rotatable strand receiver, and a cooperating ring and 'traveler, a separator plate adjacent to the ring, and a hook on said separator plate at a point not normally contacted by the ballooning strand and in position to catch the enlarged balloon resulting from false spinning,

2. Spinning apparatus comprising a rotatable strand receiver, and a cooperating ring and 'traveler, a separator plate adjacent to the ring, and a hook mounted on the separator plate at a.

' point not normally contacted by the ballooning strand and in position to detain a ballooning strand that strikes the separator plate at a point higher than' in normal spinning.

3. Spinning apparatus comprising a rotatable g strand receiver, and a cooperating vertically traversing ring and traveler, a separator plate adjacent to the ring, and a hook mounted on the separator plate adjacent to the upper limit of traverse 'of the ring. v 10 4. Spinning apparatus comprising a rotatable strand receiverv anda cooperating ring and traveler, a separator plate positioned to confine a ballooning strand which is winding onto the top of the receiver without passing through the 15 traveler, and a hook mounted on the separator plate at a level to detain such ballooning strand without catching a normally ballooning strand.

5. Spinning apparatus comprising a rotatable strand receiver, and a cooperating ring and 20 traveler, a separator plate adiacent to the ring, and strand-catching means on said separator plate extending from the plate toward the axis of rotation o1' the strand receiver at a point not normally contacted by the ballooning strand and 15 in position to catch the enlarged balloon resulting from false spinning.

EDWARD' J. ABBo'rr.

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