US1459251A - Spinning frame - Google Patents

Description

C. A. PIERCE SPINNING FRAME Filed June 5, 1921 Fig.1..

' Uurence A.Pierce yWQf v Aflys.

Patented June 19, 1923.

UNITED srares PATENT OFFICE.

CLARENCE A. PIERCE, OF LOWELL, MASSACHUSETTS.

' In the operation of a spinning frame when it becomes necessary to dofi the filled bobbins it is the usual practice for the operator to lower the ring rail to the lower limit of its movement which brings the traveller to a point just above the heel of the bobbin, and when the ring rail is in this position and the machine has been brought to rest the filled bobbin is withdrawn from the spindle and an empty bobbin replaced thereon.

During the operation of lifting a filled bobbin from the spindle the last one or two turns of yarn about the bobbin will be drawn off the heel end thereof and will be wound about the bare spindle, the yarn from. the bobbin being broken at a point between the latter and the spindle after the bobbin has been entirely removed from the spindle. This leaves the yarn which has beendrawn through the traveller wound about the spindle once or twice so that when the empty bobbin is placed on the spindle the end of the yarn will be confined between the bobbin and spindle and will thus be held so that when the spinning frame is started up the yarn will be automatically wound onto the bobbin.

It sometimes happens that when the bob Application filed June 3,

SPINNING FRAME.

1921. Serial N0. 474,665.

the removing of the bobbin from the spindle will cause the yarn to be broken at some point between the traveller and the drawing rolls and therefore when a fresh bobbin is replaced on the spindle it becomes necessary to piece up this broken end.

The object of my invention is to provide an improved stop device for limiting the downward movement of the ring rail which stop device can be adjusted to allow the ring rail to be carried below theheels of the bobbins when the latter are to be doffed thereby so relatively positioning the bobbins and ringrail that the latter can be lifted from the spindles without danger that the yarn will become caught on the heel of the bobbin thus eliminating danger of broken ends.

In order to give an understanding of the invention I have illustrated in the drawings a selected embodiment thereof which will now be described after which the novel features will be pointed out in the appended claims.

Fig. 1 is a portion of a spinning frame embodying my invention.

Fig. 2 is an enlarged section on the line 2 2, Fig. 1 showing my improved stop.

Fig. 3 is a side view of the stop showing it in the position it occupies during the spinning of the yarn and while the bobbin is being filled.

Fig. 4 shows the position of the stop during the doflingof the bobbins.

Fig. 5 is a view showing the two positions of the ring rail corresponding to the .two positions of the stop.

In the drawings 1 indicates a spinning frame of any suitable or usual construction, the latter having a plurality of spindles 2 which carry the usual bobbins 3. 4 indi cates the ring rail carrying aspinning ring 5 for each bobbin, each spinning ring having the usual traveller 6. The ringrail is given its rising and falling movement by means of the usual builder motion indicated generally at 7 said builder motion being connected by the chain 10 to a weighted bell crank lever 8 pivoted to the frame at 9, said lever acting on a post 11 secured to the mug raill.

There are usually several of these bell crank levers which are connected together by a connection or rod 12.

The parts thus far described are, or may be, all as usual in spinning frames and form no part of my present invention and as their operation is well known to those skilled in the art it is not necessary to further describe them.

The bell crank lever S is usually provided with a suitable stop adapted to engage the portion 13 of the frame, (which portion is usually referred to as a samson) forwthe purpose of limiting the downward movement of the ring rail, this stop being so adjusted as to prevent the ring rail from being lowered to a point where the yarn will be wound on the heel of the bobbin. In fact the stop is usually adjusted so that the ring rail cannot be'lowered below the point indicated by full lines Fig. 5.

ll l i e lOOblOiIIS are filled and are ready to betlofied the operator lowers the ring rail as far as the stop will permit which,

.in spinning'machines now commonly used,

will bring the ring rail intopthe' position shown infull lines Fig. .5. Vl hen the machine isat -rest thefoyperator then lifts the bobbin from the i'spindle and in doing this the l'ast turn or two of yarn indicated'at :14 in Fig. 5 will be drawn off from the heel end of the bobbin and will naturally as sume a position making one or two turns about the bare spindle." WVhen the bobbin has been entirely removed from the spin- .dle, then a fresh bobbin is placed on the spindle and thisjoperation breaks the yarn between the spindle and the filled bobbin, and at the same time the end of the yarn which is wound about the spindle will be confined between the fresh bobbin and the spindle.

Asstated above it sometimes happens that in removing the filled bobbin from the spindle the 'last turn or two of yarn on the bobbin indicated at 1 1, Fig. 5, will become caught on the shoulder 15 of the bobbin heel, thus preventingthe yarn from being pulled off from the bobbin, in which case.

thelength offyarn necessary to permit the bobbin to be removed from the spindle will be drawn through the traveler 6.

'This drawing of the yarn through the traveller will cause the-yarn to break at Some point between the traveller and the drawing rolls, thusqproducing a broken end wh1e11 requ1res to be pieced when the spin-v ning-;fr:-1me is started again. 1

lhave provided herein a stop which normally prevents the'ri'ng rail from moving downwardly any further than the full line 1 .p osition Fig. 4 and which therefore func t-ions during the spinning operation. as the ordinary stop, but which may be adjusted to permit the ring rail to be depressed into vice therefore which enables the ring rail to i be depressed into the dotted line position during dotting, it is possible to doff the bobing any broken ends.

The stop device comprises an arm '16 which is fast on the rod 12 and is shaped to .engage the samson 13'when the connection 12 moves to the left. The end 17 of this arm ispivotally connected to the body thereof as shown a t'18 so that it can be swung into or out of operative position. The pivotal connection is in the form of a kunclele joint, that is, the pivoted end 17 of the meinbei' 'is provided with a square face 19 which F is adapted to engage the square face 20 of the arm 16 when the member 171s in line with the arm 16, said square face19-limiting the swinging movement of the end 17 in one dibins quickly and without danger of producre'ction. When the part 17 is adjusted into the position shown in Fig. 3 the stop will co-operate'with the samson 13 (to limit the downward movement of the ring rail when the latter reaches the full line position Fig. 5. lVhen, however, the part 17 pbf the stop is swung into the position shown in Fig. a, then the ring rail will be perinitted to be further depressed into, the dotted linefposition Fig. 5. When the spinning frame is running the stop wil-lbe' in the position shown in Fig. 3 and when it is time .to doff the bobbinslthe stop will be adjusted'into the position shown in Fig; 41 so that when the'ring rail, is depressed it may be carried into thedotted line position Fig. 5. The bobbins are then dofl'ed while the rail is in the dotted line position and as stated above this operation can be: carried ployed. I have herein shown the part 17 as having a pivot pin 18 rigid therewith, said pivot pin being loosely mounted in'the arm 16 and being extended laterally toward the front of the spinning frame as shown at 21', the end ofthe extension being be'nt as shown at 22 to form a-handle by "which the part ,1? may be turned about-its pivot.

While 1. have illustrated herein one embodiment of my invention I do not wish to be limited to the constructional features shown.

I claim:

1. In a spinning frame, the combination with spindles adapted to support bobbins, of a ring rail carrying spinning rings, a stop device having a pivoted stop arm which in one position is operative to limit the clownward movement of the ring rail during the spinning operation and in another position permits the ring rail to drop lower during the doffing of the bobbins.

2. In a spinning frame, the combination with spindles adapted to support bobbins, of a ring rail carrying spinning rings, a stop device having an adjustable stop arm, said stop arm when in one position being operative to limit the downward movement of the ring rail and in another position being inoperative for this purpose.

3. In a spinning frame, the combination with a frame having a samson, of spindles carried thereby, bobbins on the spindles, a

ring rail, spinning rings on the ring rail, and a stop to engage the samson and limit the downward movement of the ring rail during spinning operation, said stop being adjustable to permit the ring rail to have a further downward movement during dofling of the bobbin.

4. In a spinning frame, the combination with a frame having a samson, of spindles carried by the frame, bobbins on the spindles, a ring rail, spinning rings on the ring rail, a bell crank lever associated with the ring rail, a stop arm connected to said lever and adapted to engage the Samson to limit the downward movement of the ring rail, the end of the stop arm being pivoted so that it may be into or out of operative position and when out of operative position permitting the ring rail to drop below the heels of the bobbins.

In testimony whereof, I have signed my name to this specification.

CLARENCE A. PIERCE.

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