US2145938A - Timing device for cap spinning machines - Google Patents

Description

7, 9- s. A. MANSFIELD ET AL ,1

Q TIMING DEVICE FOR CAP SPINNING MACHINES 7 Filed July '7, 1936 2 Sheets-Sheetl )5\ 25 /5| GSY;

1e 54 s a s 5 El 2| 57 mvN'rons s A. MANSFIELD v ATTORNEYS s. A. MANSFIELD T AL 2,145,938

TIMING DEVICE FOR CAP SPINNING MACHINES Filed July 7, 1936 2 Sheets-Sheet 2' Willi/4.1117

27/ sA IXERS QEED IZI JI-LIKILLORAN JAM UNITED STATES '20 3-3 of Fig. 2, and.

" Patented Feb. 7, 1939 PATENT OFFICE TIMING DEVICE FOR oar SPINNING MACHINES I Samuel, A. Mansfield and Joseph L. Killoran, Drummondville, Quebec, Canada, assignors to Celanese' Corporation otAmerica, a corporation of Delaware Application July '7, 1936,

' ing of the filling of .a number of bobbins operating on one artificial yarn spinning machine. -Another objectof the invention, is the production,

v at the spinningfmachine, of; packages of yarn each-of which contains theisame amount of yarn. Other objects of theinvention will appear from 'flthe following'de'tailed description and drawings. In the drawings, wherein like reference nu-' merals refer to the same or similar elements}.

Fig. 1" is a. front'view of a section of a spinning machine constructed in accordance with thisinvention, p

Fig, 2 is a sectional view, on an enlarged scale, of'a part of the spinning machine,

Fig. 3 is a sectional. view, taken on the line Fig.4 is. a sectional view taken on the line 4-4 of Fig. 2, I I

' o In the manufacture of artificial yarns, filaments are formedby extruding a solution of a derivative of cellulose in a volatile solvent through a {suitable orifices in a spinning jet intoa solidifying medium, and a yarn is formed from a group.

- o-f' continuous'length filaments. The solidifying spinning, or a precipitating liquid as in the wet methodof spinning. After the yarns areformed they are drawn from the spinning cabinet or tank and wound into packages. In modern commercial practice,- each spinning machine is equipped f each spinning machine is usually provided with "a, take-up packaging device for each jet. The

, take-up packages are usually arranged in a row on one or both sides of the machine.

I -The device of the present invention has for its the spinning machines with timing devices herein described have been'developed so that the timing device is controlled by the speed of the spinning machine itself. By employing spinning machines constructed in'accordance with'this invention,

doffing of uniformly filled packages maybe ac- 'LCOmDIlShGd.

5 in accordance with our invention, we mount medium may be a'gas as in the dry method of.

with from 10 to 1.00 or more spinning jetsand Serial No. 89,436

One. spinning machine a novel timing device for indicating the amount of thread or yarn placed upon the take-up packages, which timing device accurately controls the actual amount of thread or yarn placed on the packages. 5 Referring to the drawings, the yarn is formed ina cabinet 2 containing suitable feed lines,

pumps and spinning lets, not shown. The cabinet 2, also contains a suitable solidifying medium and guide rollers, not shown, todirect the yarn from 10 thespinning jets to ports 3 in the cabinet. Rollers 4 are provided for drawing the threads or yarns from the cabinet and feeding them to take-up'packages 5, which feed rollers are supported on a. shaft 6. The thread or yarn is caused to be frictionally engaged by the feed rollers 4 by passing itone or more times around the roller. After leaving the feed roller, the thread or yarn passes through suitable guides, not shown, and is wound up on the bobbin 5. Both the shaft 6 supporting the feed rollers 4 and the bobbins 5 are driven at a substantially constant speed from any suitable source or sources of power.

' bolts 2I whichin the lower bracket are on either side of and in the upper bracket pass through the slot 22=formed by the spacing of the angle members I2 and I3. Backing members 23 aid the tie bolts in gripping the angle members. If desired, the backing members 23 may be welded to the angle members I2 and I3 and the bolts placed in holes formed through the angle mem- 0 bers and backing members. Fastened in any suitable manner on the angle member I3 is a scale 24.

Mounted in the slot 22 formed by the angle members I2 and I3 is an adjustable tripping device 25. This tripping device comprises a bracket having a tongue 26, adapted for sliding engagement with the frame I I in slot 22, and a clamping member 21 which may be provided with springs 28 tending to force the clamping member away from the inner face of the angle members l2 and I3 and the tongue 26. A screw 29 is provided for clamping the tripping device onto the angle I members. The'bracket 25 carries a pointer 3| which cooperates with the scale 24 to allow an accurate setting of the tripping device. Mounted on the tripping device is a fixed stop or abutment 32.

Journaled in a housing 33 of the lower bracket is a shaft 34 which has a worm gear 35 attached thereto. On the outer end of the shaft is. a sprocket wheel or pulley 36 adapted to bedriven from the shaft 6 by means of a belt or chain 3| and a sprocket wheel or pulley 38. Mounted onthe screw I! and in driving relation thereto is a.

gear 39 adapted to be rotated by the worm gear 35 which gear 39 in turn rotates the screw Screw I! carries a rider which comprises a body part or a casing 4| having non-threaded screw engaging bearings 42 and 43. To prevent rotation of the casing 4|, the same is provided with a pin 44 which projects into the slot 22 formed of the angle members. A friction reducing roller45 may be provided on that part of the pin 44 contacting the sides of. the slot 22,

In the casing 4| there is slidably mounted a threaded split nut 46 which can be 'throwninto or pulled out of engagement with the screw IT. The nut 46 contains a pin 41- that'actsasa cam follower in camways 48' formed 'in levers 49 and Lever 49 is pivoted on-ascrew 52 on the cas-v ing4l while the lever 5| is pivoted on a'shaft 53 on the casing 4|, the shaft 53 being held in a non-rotating relation to thelever 5|. Mounted on the lever 5| and shaft 53 is a housing 54 enclosing a. mercury switch-55. The levers 49 and sounds.

5| are tied together by a roller 56 which operates against the fixed stop 32. The opposite ends of levers 45 and 5| are tied together by a pin 57. The pin 51 and the casing 4| are connected by a snap action spring 58' which includes two telescoping members 59 and 6| and fastening means 62.

An electric cable 63 is adapted to connect the mercury switch-55 with asuitable signal, for example, a bell, a siren, 'a semaphore, a light or a combination of these, for instance, a red light provided with a siren connected in the red light circuit by means of a delayed action switch. Thus if the operator neglects to restart his timing device for more than 30 seconds the alarm For the purpose of setting the timing device the lever 5| terminates in ahandle 64; Thus, after the rider has fallen to the bottom the handle 34 will be in a raised positionand the rider disengaged from the screw. After the operator has finished dofling he pushes the lever 5| downward effecting. anengagement of the riderwith the screw, which rider commences-its slow movement upward. Alternatively, when the operator receives the signal he resets the lever 5| and starts dofiing the bobbins.

The lower end of the casing 4| terminates in a plunger 55.. This plunger is made to weigh enough to ensure that the rider will fallpromptly and with certainty. Adjustably mounted on the screw H by means of the nut 66 is a dash pot 61 adapted to cushion the fall of the rider.

In operation, the vertical screw l7 rotates continuously and the rider 4| is engaged with'the screw by pressing lever or handle 64 downward. The rider slowly and continuously rides upward until the lever 5| or roller 56 meets the stop 32. As the lever has a snap action it will jerk the nut 43 out of engagement with the screw as soon as the lever passes the center of its travel. As soon as the nut is disengagedthe whole rider as sembly falls under gravity while the electric switch 55 closes a circuitto a suitable visible or audible indicator. When the operator receives the indication he re-sets the levers by means of handle 64 and starts doffing the bobbins. It will be seen that the rider will rise a definite distance for each revolution of the feed roller 4 which in turn represents a definite length of yarn passed to the bobbins 5. The ratio of the belt or chain device 3'! and worm and gear drive 35-39 can be so chosen that one inch vertical rise of the rider will correspond to a definite number of revolutions of the feed roller, say one thousand. Thestop 32 can be adjusted so as to trip the rider after any required number of revolutions of the feed roller. The pointer 3|, which moves close to the scale 24, indicates at all times the number of revolutions made since the start of the period and it can be used for setting the trip or stop 32.

When a bank of spinning machines have, for instance, 100 spindles on a side, the bobbins may not be dofi'ed from the first to the last, but they may be doffed in sections of say 20 bobbins. Thus the bobbin spindles may be portioned into, say, 5 sections along the length of the machine, and these sections numbered 1 to 5. When the signal isreceived by the operator he pulls down handle 64 (which recommences the upward travel of the rider) and immediately proceeds to dofi one section only. A few minutes after the completion of this doif the signal will again be given and the operator again restarts the rider on its upward travel and immediately commences to doif the next section. In this method of operation the timer is set to operate at intervals corresponding to one-fifth of the desired bobbin filling time,

It will be seen that the device described above will designate the number of revolutions ofthe feed roller automatically. It is simple, accurate in its indication, free from trouble in operation, and inexpensive to make and install. It also has the merit of being easily adjusted over awide range,

This invention is applicable to the manufacture of packaging of any synthetic yarn, for instance, the yarns made of organic derivatives of cellulose or regenerated or reconstituted cellulose.

Examples of organic derivatives of cellulose are the, organic esters of cellulose such as cellulose acetate, cellulose formate, cellulose propionate and cellulose butyrate, while the ethers of cellulose are ethyl cellulose, methyl cellulose and benzyl cellulose.

It isto be understood that the foregoing detailed description is given merely by way of illustration and that many variations may be made therein without departing from the spirit of our invention.

Having described our invention, what we desire to secure by Letters Patent is:

14A measuring device comprising a rotatable screw, a rider mounted on said screw and adapted to be lifted from one end of said screw to the other end by the rotation of said screw, a member mounted on the rider and adapted to control the engagement and disengagement of said rider with the screw, and tripping means adapted to engage said member at a predetermined point along the length of travel of the rider so as to disengage the rider from the screw and allow it to return by gravity to its starting position.

2. A measuring device comprising a rotatable screw, arider mounted on said screw and adapted to be lifted from one end of said screw to the other end by the rotation of said screw, a pivoted member mounted on said rider and adapted'to to engage said pivoted member at a predeter- 'mi'ned point along the length of-travel of the c rider so as to disengage the rider fromthe screw 7 and allow it to return by gravity to its starting position.

3. A measuring device comprising a rotaa aipivoted member mounted on said rider and table screw, a rider mountedon said screw and 1- adapted to be lifted from one end of said screw to the other end by the rotation of said screw,

adapted to control the engagement and disengagement of the rider with the screw, and a fixed stop at a predetermined point along the length of the screw adapted to trip said pivoted member wherebythe rider returns by gravity to its starting position.

4. A measuring device comprising a vertical rotatable screw, a rider mounted on said screw and adapted to be lifted from one end of said screw to the other end by the rotation of said screw, a pivoted member mounted on said rider and adapted to control the engagement and disengagement of the rider with the screw, a fixed stop at a predetermined point along the length of the screw adapted to trip said pivoted member whereby the rider falls to its starting position, and means for cushioning the fall of said rider. c

5. A measuring device comprising a rotatable screw, a rider mounted on said screw and adapted to be lifted from one end of said screw to the other end by the rotation of said screw, a pivoted member mounted on said rider and adapted to control the engagement and disengagement oi the rider with the screw, a fixed stop at a predetermined point along the length of the screw adapted to trip said pivoted member, whereby the rider-returns by gravity to its starting position, and an electric circuit including a mercury switch under the control of said pivoted member for signalling the tripping of said pivoted member.

6. A measuring device comprising a rotatable screw, a rider mounted on said screw and adapted to be lifted from one end of said screw to the other end by the rotation of said screw, means adapted to control the engagement and disengagement of the rider with said screw, said means comprising a lever pivoted on said rider and having a camway and a cam roller operating in said camway, and a stop at a predetermined point along-the length of the screw for tripping said lever,'the construction and arrangement being such that upon the tripping of the lever the cam roller causes the rider to become detached from the screw and return by gravity to its starting position.

'7. A measuring device comprising a rotatable screw, a rider mounted on said screw and adapted to be lifted from one end of said screw to the other end by the rotation of said screw, means adapted to control the engagement and disengagement of the rider with said screw, said means comprising a lever pivoted on said rider and having a camway and a cam roller operating in said camway, a stop at a predetermined point along the length of the screw for tripping said lever, the construction and arrangement being such that upon the tripping of the lever the cam roller causes the rider to become detached from the screw and return by gravity to its starting position, and an electric circuit including a mercury switch under the control of said lever for signalling-the tripping of said lever.

SAMUEL A. MANSFIELD. JOSEPH L. KILLORAN.

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