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Publication numberUS2367768 A
Publication typeGrant
Publication dateJan 23, 1945
Filing dateJan 7, 1944
Priority dateJan 7, 1944
Publication numberUS 2367768 A, US 2367768A, US-A-2367768, US2367768 A, US2367768A
InventorsBradford C Gibbs, Robert H Roughsedge
Original AssigneeCelanese Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Stop motion
US 2367768 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

Jan. 23, 1945. B. c. Glass Erm.

STOP MOTION Filed Jan. 7, 1944 INVENTORS` B.C.G\BBS.

BY R.H. ROUGHSEDGE. #M/1m.

ATTORN EVS Patented Jan. 23, 1945 STOP MOTION Bradford C. Gibbs, Teaneck, and Robert H.

Roughsedge, Ramsey, N. J.,

assignors to Celanese Corporation of America, a corporation of Delaware Application January 7, 1944, Serial No. 517,330

Claims. k(Cl. 242-37) This invention relates to stop motions for twisting and winding machines, and relates more particularly to stop motions for twister-cheesers adapted to produce large yarn cheeses.

An important object of this invention is the provision of a novel stop motion device for twistercheesers for raising the take-up package from its friction drive upon failure of the yarn, so as to stop the rotation of the yarn packages.

Another object of this invention is to provide an improved stop motion device, including an air cylinder having a solenoid operated valve, for stopping the rotation of the take-up package in twister-cheesers upon failure of the yarn.

Other objects, together with certain details of construction and combinations of parts, will appear from the following detailed description.

In the drawing, wherein like reference numerals indicate like parts throughout both views thereof,

Fig. l is a side elevational view, substantially in cross-section, of one modification of our novel stop motion device showing its relation to the take-up package lever arm of a twister-cheeser, which lever arm it is adapted to raise upon failure of the yarn, and

Fig. 2 is a side elevational view, partly in section, of a modified arrangement of air cylinder and solenoid operated valve therefor.

Our invention comprises a novel stop motion device, including an air cylinder and solenoid operated valve therefor, which is eminently suitable for use in raising the yarn package 'from its friction drive in twister-cheesers producing larger yarn cheeses, i. e. cheeses on the order of two, three or more pounds. Twister-cheesers producing such large cheeses are provided with heavier lever arms for holding the yarn package as well as a heavier friction drive, etc., the weight of the cheeses and lever arms necessitating the use of a heavier counterweight and other elements making up the stop motion device. In accordance with our invention, there is provided a stop motion device, responsive to yarn failure, which obviates the use of heavy -counterweights resulting in freedom of vibration, which is faster in action, land which is easy to rethread and reset. These advantages are attained by the use of an air cylinder, having a solenoid operated valve, for operating the means for raising the yarn package out of contact with its friction drive, and means for quickly setting in operation the solenoid operating the valve upon failure of the yarn.

Referring now to the drawing for a more detailed description of our invention, the reference numeral I indicates the frame of a twister- 55 cheeser, a portion of whi-ch is shown in dot-dash lines to show the relationship of our stop-motion device thereto. In frame I is journaled a shaft 2 having attached thereto a lever arm 3 the outer or free end of which is provided with a split bearing 4. A spindle 5 is held in the split bearing 4 by means of la bolt 6. The spindle 5 is adapted to receive the cardboard cone upon which a cheese l is built up from yarn 8 drawn from a suitable source of supply which may be another yarn package or even an artificial yarn spinning machine. rIhe yarn package may rest on and Ibe driven lby rolls (not shown), as is Well understood in the art. However, the spindle 5 may be provided :with discs 9 which may be driven by frictional contact with suitable rolls.

To stop the rotation of the yarn package l, i. e. thewinding of the yarn into a cheese, the lever arm 3 is raised, thus lifting the package from the friction drive means. The stop motion device of our invention lcomprises a simple, efcient and quick-acting means for lifting the yarn package from its drive, and will now be described more particularly. The yarn 8 in its travel from the source of supply to the cheese 'I passes through a guide II which may be supported in any suitable manner as by being mounted on a cross-piece I2 of the twister-cheeser frame I. The yarn then passes over a Ibar I3 carried on the free end of a pivoted arm I4, over guide rod I5 and on to the cheese l. The arm I4 may be integral when screwed into a casting |16 which is pivoted yon a shaft I6 which shaft is carried by a bracket I7 fastened in any suitable manner to a cross-bar I8 on the twister-cheeser frame. The casting I6 is provided with an integral extension I9 which carries at its outer end a oounterweight 20. 'I'he traveling yarn 8 holds the arm I4 in the position shown in Fig. 1. However, any failure in the yarn, such as breakage thereof or slack tension, permits the arm I4 to rotate clockwise.

The rotation of the arm I4, together with the extension I9 of 'casting I6, causes the weight 20 to operate the switch generally indicated by reference numeral 2I, contained in a dustand moisture-proof housing 22, by the weight 20 striking a plunger 23, ywhich is also one terminal of the switch. The plunger 23 operates against the action of spring 24. The plunger 23 is connected to a source of electric power by a lead line 25 while the contact 25' is attached to a lead line 26 connected to one terminal of a solenoid 27. The other terminal of the solenoid Z'I is connected by a lead line 28 to the source of electric power. The solenoid may be of the conventional type comprising a hollow core 29 supporting the windings or coil 3|, all enclosed in a suitable housing attached to a casting 32 by means of tap bolts 33. The casting 32 forms a cylinder 34 open at one end A35 and shaped to a shouldered valve stem guide 36 at the other end. The cylinder 34 contains a spool type sliding valve 31 having suitable gaskets 3B and a valve stem 39. The valve stem '39 extends through the guide 36 and is forced in an extended position by means of an expansirble spiing 4l that ts on the shouldered guide 36 and abuts against a stop 42 that is adjustably positioned on the stem 39 by means of a nut 43. The y cylinder 34 is provided -with an inlet port 44 connected to a source of fluid pressure by a pipe 45 and an outlet port 46 that communicates with a working cylinder 41. The -cylinder 34 also containsV a bleeder opening or port 48 opening the cylinder 34 to the atmosphere so that any fluid pressure leaking past the valve 31 will pass to the atmosphere without affecting the pressure in the working cylinder 41. In ther end of the valve 31 opposite the stem 39V is tapped an iron valve stem 48.

The working cylinder 41 formed of a suitable housing, preferably but not necessarily cast integral with the valve casting 32, contains a piston 49 with suitable gasket 5l and a bolt 52 adapted to hold the same together and to a piston rod 53. A head plate 54 is attached to the cylinder walls 41 by tap bolts 55. The outer end of the piston rod 53 is formed into a shoe'56 that is adapted to push against and raise the lever arm 3.

In operation, the mechanism is normally in the position shown in the drawing with. any air or other fluid used to. operate the piston leaking past the valve 31 'passing to the atmosphere through port 48. Upon failure of the yarn, however, the lever i9. swings clockwise forcing the weightl 20 against the plunger 23 thus energizing the solenoid 21. The energized solenoid pulls the valve stem 48.' and thereby the valve 31 t-o the right, as shown in the drawing, thus connecting the supply port 44 with the working cylinder 41- through the port 46. The pressure in the cylinder 4-1v moves the piston rod 53 upward to effect a movement of the lever arm 3 andyarn package 1i to inoperative position. The mechanism remains in this position until the yarn controlledarm I4 is moved back and held in place by a yarn and then the deenergized solenoid allows the spring' 4I to move the valve 31 to the left, thus" opening the cylinder 41 to the atmosphere through ports 46 andl 4B, whereupon the weight of the arm 3 forces piston rod 53 back tothe position shown, I

The modifications shown in Figs; l and-2 do not differ from each other in function but only in the relative position of cylinder and valve, the difference being merely one of overall design adapting the mechanism to different winding machines. In Fig. 1, the valve 31 is at a right angle to the working .cylinder 4'1, while in Fig. 2 the valve 31 is parallel to the working cylinder 41'.

The casting forming the walls of the valve cylinder and working cylinder may be of any suitable material such as iron, brass, lead alloys, plastics, etc. These castings may be provided with projecting ears for attaching them to the frame of the twister-cheeser;

It is to 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. f

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

1. A stop motion for a twisting and winding machine having a pivoted lever arm supporting a frictionally driven yarn package, comprising an electric circuit normally maintained in open position by a yarn and closed by failure of the yarn, a solenoid in said circuit, a valve operated by said solenoid, a working cylinder connected to said valve, a piston in said cylinder and a rod connected to and movable with said piston for moving said lever arm about its pivot'l to disengage said yarn package from its friction drive.

2. A stop motion for a twisting and winding machine having a pivoted lever arm supporting a frictionally driven yarn package, comprising an electric circuit normally maintained in open position by a yarn and closed by failure of the yarn, a solenoid in said circuit, a valve operated by said solenoid, a working cylinder connected to said valve, a piston in said cylinder and a rod connected to and movable with said piston for mov` ing said lever arm about its pivot to disengage said yarn package from its friction drive, said valve being provided with a drain port for permitting said piston to be lowered upon deenergization of said solenoid.

3. A stop motion for a twisting and winding machine having a pivoted lever arm supporting a frictionally driven yarn package, comprising a valve, a working cylinder connected to said valve, a piston in said cylinder, a rod connected to and movable with said piston for moving said lever arm about its pivot to disengage said yarn package from its friction drive, an electric circuit normally maintained in open position by a yarn and closed by failure of the yarn, a solenoid in said circuit, said solenoid, upon being energized on failure of the yarn, causing said valve to be moved into position to permit the operation of said piston, and means for returning said valve to its original position upon deenergization of said solenoid.

4. A stop motion for a twisting and winding machine having a pivoted lever arm supporting a frictionally driven yarn package, comprising a valve, a working cylinder connected to said valve, a piston in said cylinder, a rod connected to and movable with said 'piston for moving said lever arm about its pivot to disengage said yarn Dackage from its friction drive, an electric circuit normally maintained in open position by a yarn and closed by failure of the yarn, a solenoid in said circuit, said solenoid, upon being energized on failure of the yarn, causing said valve to be moved into position to permit the operation of said piston, and a spring forv returning said valve to its original position upon deenergization of' said solenoid.

5. A stop motion for a twisting and winding machine having a pivoted lever arm supporting a` frictionally driven yarn package, comprising a valve, a working cylinder connected to said valve, a piston in said cylinder, a rod connected to and movable with said piston for moving said lever y circuit, said solenoid, upon being energized onfailure of the yarn, causing said valve to be moved into position to permit the operation of said piston, and means for returning said valve to its` original position upon deenergization of said solenoid, said valve being provided with a drain port for permitting the piston to be lowered upon the return of said valve t0 its original position.

6. A stop motion for a twisting and winding machine having a pivoted lever arm supporting a frictionally driven yarn package, comprising a valve, a working cylinder connected to said valve, a piston in said cylinder, a rod connected to and movable with said piston for moving said lever arm about its pivot to disengage said yarn Vpackage from its friction drive, an electric circuit normally maintained in open position by a yarn and closed by failure of the yarn, a solenoid in said circuit, said solenoid, upon being energized on failure of the yarn, causing said valve to be moved into position to permit the operation of said piston, and a spring for returning said valve to its original position upon deenergization of said solenoid, said Valve being provided with a drain port for permitting the piston to be lowered upon the return of said valve to its original pod sition.

7. A stop motion for a twisting and winding machine having a pivoted lever arm supporting a frictionally driven yarn package, comprising a valve, a working cylinder connected to said valve,

a piston in said cylinder, a rod connected to and movable with said piston for moving said lever arm about its pivot to disengage said yarn package from its friction drive, an electric circuit normally maintained in open position by a yarn and position to permit the operation of said piston,

and means for returning said valve to its original position upon deenergization of said solenoid.

8. A stop motion for a twisting and winding machine having a pivoted lever arm supporting a frictionally driven yarn package, comprising a valve, a working cylinder connected to said valve, a piston in said cylinder, a rod connected to and movable with said piston for moving said lever arm about its pivot to disengage said yarn package from its friction drive, an electric circuit nor'- mally maintained in open position by a yarn and closed by failure of the yarn, a solenoid and a switch therefor in said circuit, said switch being operated to close said circuit by said lever arm on failure of the yarn, thereby energizing said solenoid to cause movement of said valve into position to permit the operation of said piston, and a spring for returning said valve to its original position upon deenergization of said solenoid.

9. A stop motion for a twisting and winding machine having a pivoted lever arm supporting a frictionally driven yarn package, comprising a valve, a working cylinder connected to said valve, a piston in said cylinder, a rod connected to and movable with said piston for moving said lever arm about its pivot to disengage said yarn package from its friction drive, an electric circuit normally maintained in open position by a yarn and closed by failure of the yarn, a solenoid and a switch therefor in said circuit, said switch being operated to close said circuit by said lever arm on failure of the yarn, thereby energizing said solenoid to cause movement of said valve into position to permit the operation of said piston, and means for returning said valve to its original position upon deenergization of said solenoid, said valve being provided with a drain port for permitting the piston to be lowered upon the return of said valve to its original position.

10. A stop motion for a twisting and winding machine having a pivoted lever arm supporting a frictionally driven yarn package, comprising a valve, a working cylinder connected to said valve, a piston in said cylinder, a rod connected to and movable with said piston for moving said lever arm about its pivot to disengage said yarn package from its friction drive, an electric circuit; normally maintained in open position by a yarn and closed by failure of the yarn, a solenoid and a switch therefor in said circuit, said switch being operated to close said circuit by said lever arm on failure of the yarn, thereby energizing said solenoid to cause movement of said valve into position to permit the operation of said piston, and'

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2625333 *Apr 28, 1950Jan 13, 1953North American Rayon CorpTraverse guide trip
US2752104 *Feb 4, 1953Jun 26, 1956Reiners WalterApparatus for controlling the thread feeler means of a textile machine
US2757874 *Mar 2, 1953Aug 7, 1956Marcellus BrooksSpooler type winder
US3481550 *Sep 6, 1967Dec 2, 1969Julian B ChavisStop motion for yarn winding machine
US4497451 *Aug 4, 1983Feb 5, 1985Saurer-Allma GmbhPneumatic drive for a swingable spool holder
Classifications
U.S. Classification242/485.3, 152/168
International ClassificationB65H63/036
Cooperative ClassificationB65H2701/31, B65H63/0364
European ClassificationB65H63/036C