US2857114A - Device in a spinning frame to wind up a yarn end on the neck of a spindle - Google Patents

Description

Oct- 2 19-53 I I TAKEJIARAI 2,857,114

Filed March '12; 1956 DEVICE IN A SPINNING FRAME TO WIND UP A YARN END ON THE NECK OF A SPINDLE 2 Sheets-Sheet 1 INVENTOR T. ARAI' Oct. 21, 1958 r 'TAKEJI ARAI 2,857,114

DEVICE IN- A SPINNING FRAME TO WINDUR A YARN END ON THE NECK OF. A SPINDLE Filed March 12, 1956- I I v 2 Sheets-Sheet 2 INVENTORV T. ARA! a M j U it dtates Patent DEVICE IN A SPINNING TO WIND UP .A YARN END ON THE NECK OF A SPINDLE Takeji Aral, Shinji-cho, Japan, assignor to O-M Spinning Machine Mfg. Co., Ltd., Kita-ku, Osaka, Japan, acompany of Japan Application March 12, 1956, Serial No. 570,816

Claims priority, application Japan April 13, 1955 become full of yarn layers, the machine automatically stops and a worker operates a handle to lower the ring rail to its starting position, removing the full bobbins from thespindles, and empty bobbins are inserted in place of the removed ones.

When a full bobbin is to be removed from a spindle, the yarn coming from the front rollersto the bobbin is cut, and the yarn end is wound on the neck of the spindle by hand, so that the yarn winds on the new bobbin when the machine starts its operation again.

An object of this invention is to provide a device to automatically lower the ring rail beyond its starting position when the machine stops, so as to bring a traveller on a ring to the level of a spindles neck.

Another object of the invention is to provide a means to automatically slack a chain on which the ring rail is supported, when the. spindles have turned a pre-determined number of revolutions so that the bobbins become full'of yarn.

According to this invention, when bobbins become fullof yarn, the machine stops its operation, and the ring rail automatically lowers beyond its starting position, so that the yarns wind on the necks of the spindles as the spindles are still revolving due to inertia. When a full bobbin is replaced by a new one, the yarn will wind on the new bobbin when the machine starts again.

In the drawing,

Fig. 1 is a front elevation of the lower part ofa spinning frame at the end thereof provided with a device according to the present invention;

Fig. 2 is a same view showing a part of Fig. l in an enlarged scale; and

' Fig. 3 shows the relation between a spindle and a ring rail, which is in its' lowest position beyond its starting place, the ring rail shown in chain lines being the top and bottom positions in the normal operation.

Referring to Fig. 1, 1 is the machine frame, and the ring rail, not shown, is supported on vertical bars 3, one of the bars being shown in the drawing. The bars are guided by vertical bearings 2 on the frame. A slide bar 5 is horizontally held on a roller 4 mounted on the frame. A chain 7 is fixed at a point 6 to the bar 5, and another end is fixed to a lever 8, on which the vertical bar 3 is supported. A chain 9 is fixed at its end to the bar 5 by means of a bracket 10, and another end is fixed to a wheel 12, which is freely mounted on a shaft 11 on the frame, at a point 13 on its periphery. Another chain 15 is fixed at its right end to a point 14 on the periphery of the wheel 12, and its left end to a point 17 on the periphery of a wheel 16. Another chain 19 is extended over the wheel 16 and is fixed at its upper end to a point 18 on the periphery of the wheel, and at its lower end to a point 21 on the periphery of a wheel 20. As the weight of the .by arrows a, b, and 0'.

ring rail is imposed on the vertical bars 3, the bar 5 is intended to slide to the right, so that the chains, 9, 15 and 19 are normally pulled in the directions as shown A driving shaft 22 drives another shaft 25 through aclutch 23-24, and a shaft '27 is driven by the shaft 25 through bevel gears 26. On the shaft 27 is secured a cam 28, which is in contact with an idler roller 32 provided at the free end of a lever 31 of the builder motion mechanism, and the lever is pivoted on the frame by a pin 30, so that the lever is rocked on its pivot. On the lever 31 are provided spindles 33, 34 and 35. A ratchet wheel 36 and a spur gear 36' are secu'recl to the spindle 33, and the spur gear meshes with a gear 37 secured to the spindle 34. A bevel gear 38 and a worm 39 are fixed to a shaft 1 rot-atably held on an extended part of the lever 31, and

a bevel gear 37' on the spindle 34 meshes with the bevel gear 38. The worm 39 meshes with a worm wheel20' on the spindle 35, so that the wheel 20 is rotated by the ratchet wheel 36 through these intermediate gears.

An arm 40 is pivoted on the spindle 33, and a pawl 41 for driving the ratchet wheel 36 is provided at the end of the arm. A pawl 42'is pivoted on the lever to prevent the counter rotation of the ratchet wheel. An adjustable stopper 43 is provided on the frame under the arm 40. When the arm ,40 is lowered together with the lever 31, its lowering motion is prevented by the stopper, so that the pawl turns the ratchet wheel 36, and this rotation eventually drives the wheel 20 in the counter clockwise direction. As the chain 19 is normally pulled upwards, the

roller 32 is always in contact with the periphery of the A horizontal bar 48 is slidably held on the frame, and v is normally pulled to the left by a spring 49. The left end of the bar is connected with a lever 51 on av pin 50, the bar having a projection extending into a slot in the lever, and the latter is turned in the direction: denoted by an arrow d when the bar 48 is pulled to the left so that the clutch piece 23 is pulled to disengage from the cooperating piece 24, and the driven shaft 25 is uncoupled from the driving shaft 22.

A bar 52 is connected to the free end of the arm 47 and to a bifurcated link 74 which is pivoted on the frame 1 by a pin 73. An elastic pawl 53 is pivoted on the link.

by a pin 76, and normally touches a piece78 secured to the bar .48 to prevent the latter from sliding to the left.

When the spindles have turned a predetermined number of times so that the bobbins have become full of yarn, the

current for the motor is automatically cut oif so that the magnet is demagnetized and the arms 46 and 471'are pulled up by the action of a spring, so that the pawl 53 is outvof contact with the piece 78, and the bar 48 is pulled to the left by the spring 49.

When the machine is operating, the driving shaft 22 drives the cam 28 and the lever 31 rocks, so that the ratchet wheel 36 is turned and the spindle 35 is rotated, Thus the wheel 20 is turned and movesv little by little. 7 upand down with the lever 31, gradually winding up the chain 19 in thedirection opposite-to the arrow c.- 'Asthe;

ratchet wheel 36 in the counterclockwise direction with I a handle inserted on the spindle 33, cutting the yarns,

removing the bobbins from the spindles, and must wine in the'cloekwise direction on the pivot .55 so that the.

arms 46 and 47 are pushed up if they are, not pulled, by the magnet 45. A. small piece 61 is adjustablyliiiied on the right end of the lever by a screw 61'. A beet member 58 is pivoted on the lever by' a pin 59', and a plate spring 60'fix'ed on the lever s'e'rves'to press the hook member, its normal position being adjustable by an adjusting screw 57.

An'arm 62 is pivoted on the frame by a pin 63, and,

a pin 64. is pr'ovided'on the free end of the arm. The right end 62' of the arm is made in an arc, and a chain 65is fixed to its upper end. The lower end of'the chain extends over a guide wheel 67 mounted on a pin 66 on the frame, and is connectedto a bar 68, which is pulled to the right by means of'a spring, not shown. The strength of the springis so adjustedtha't the weight of the arm 62 in respect of its pivot 63is a little larger than the strength of the spring.

A spindle 69 is held on'the' frame, and the arm 62 can be turnedjon its pivot to the position: shown by the line 64, There is a hook shaped projection 70 on the free end of the arm 62, and the hook member 58 engages with this projection so that the arm 62 is held in the position as shown in the drawing.

On the boss of the wheel 16 is secured a circular disc 71,'and a step 72' is provided'on itsperiphery. The disc can be circumferentially slid onto the boss, and secured at any required position, so that the position of the step on the boss can be adjusted. The wheel 16 is held on the pin 64, and the piece 61-carr descend with the. lever 55.

19 are pulled-indhe' directions opposite to the arrows r b and-c respectively, and the wheel16turns in a counterclockwise direction? When the spindles have; turned a predeterminednumber of revolutionsso that the bobbins havebecome'full of yarn, the-step 72 comes beneath the piece 61', the -p'ositiorr of' the disc ,71 being adjusted to achievethis; and a switch in' the circuit for the motor opens; The piece 61ca-n now-descend as abovementioned, and thescrew 57 pushesthe top of the hook member, so that the latter releases the p Oicction 70; The arm 62 now turns down due to its unbalanced weight to the position as shown by the line 64 carrying with' it-the wheel 16. On account of this fact, the chain'15 slackens and the ringr'ail lowers due to its weight which isQalways supported by the' chain; The position-64' is so designed that the ring rail lowers to the level of the neck of 'thespirrdle 80 as shown by the full line 75, which is alitfle lower than it's starting position in Fig. 3. The switch has now been opened but the machine is still running due to ineftia, and the yarn winds on the neck of the spindle a number of turns until the machine actually stops. The full bobbin is removed by hand from the spindle, the operator cutting the yarn, leavingthe part wound on the neck of the spindle untonche'd, and a new empty bobbin is insertedzonthespindle. ,Next; the spindle 33 is turned in a counterclockwise direction with a handle, disengaging the pawls 41 and 42, so as to bring the wheel 20 to its origina-lpositien; :and the spindle 69is next turned by a handle to raise the 'arm 62 until the hook member 58 catches the projection 70. When the machine is again started, the yarnbeginsto wind'on the new bobbin starting from the wound part on the spindles neck. 7

According to this invention, the wheel 16 is not moijhted a. a fixcd point asin a known devicebuttis mounted on an arm, which turns on its pivot to bring down the ring rail beyondthestarting position, sothat the winding of the yarn end entire neck otthe spindle is performed by making use of the inertia of the machine, so that replacementof'bohbin's can be made as soon as the machine stops, thereby the time for replacement of bobbins can be shortened, and the replacing operation can always be made in the same manner as the ring rail is mechanically lowered atja constant speed.

When'the supply-of electric current for the motor cut off in course of a spinning operation, the sprin'g54;

tends to bring upthe arm 47, but the bar 52 cannot be brought up because the piece 61 cannot be, lowered except at the time when thebobbin becomes full sothat the step '72 is just beneath the piece 61, and thus the arm'62 is not affected at this time.

What I claim is:'

l. A device in a spinning frame for automatically winding a-yarn on the neck of a spindle when a bobbin .on the spindle becomes full c t yarn, comprising an 7 arm pivotally mounted on the spinning frame, a wheel mounted on one end of said arm, two chains fixed to and extending over the wheel, one of thechains being connected to the ring rail on the spinning frame so as to turn the wheel in one direction under the influence of the weight of the ring rail, the other chain being pulled by the builder motion mechanism of the machine which oscillates the ring railand at the same time progressively raises it, whereby said wheel isturned in opposite directions, a projection provided on the free end ofthe arm, and a hook member which holds the projection so as to keep the arnisend in its highestppsit'ion, and a means for disengaging said hook member from the projection when the wheel turns to a position which corresponds to the time when the bobbin becomes full of yarn.

21A device as'clairne'd in claim 1, in which said means for disengaging said hook member comprises a lever pivotally mounted on the machine frame, a piece provided at the end of said lever, a disc secured to the boss of said wheel and having a step onits periphery, and means for pressing the piece against the periphery of said disc for urging said piece, into the'step when the wheel is turned through a predetermined angle, said hook member being disengaged from said projection by the motion of the lever.

References Cited in the file of this patent UNITED STATES PATENTS 195,470 Adams Sept 25, 1877 965,306 Koechlin July 26, 1910 1,459,251 Pierce June 19, 1923 2,503,099 Culbreath Apr. 4, 1950

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