US2707005A - Means for the periodic and automatic rotation of a shaft through pre-determined angles which are controlled by a perforated card, more especially for the selective insertion of different yarn shuttles on looms - Google Patents

Description

April 26, 1955 c. FucHs 2,707,005 ANDAUTOMATIC ROTATION OF A SHAFT INSERTION OF D'IFFERENT YARN SHUTTLES 0N LOOMS Filed Dec. 28, 1951 4 Sheets-Sheet l ATTORNEYS April 26, 1955 4 sheets-sheet 2 -INSERTION Firled Dec. 28, 1951 INVENT'oR CARL FUCHS B11/M51 L/ LV ATTORNEYS April 26, 1955 4 Sheets-Sheet*l 3 ATTORNEYS April 26, 1955 Q FUCHS 2,707,005

MEANS FOR THE PERIODIC AND AUTOMATIC ROTTION OF' A SHAFT T UGH PPE* ERMINED ANGLES WHICH ARE CONTROLLED BY ERFORATE D, MO ESPECIALLY FOR THE SELECTIVE ARN SHUTTLE INSERTION DIFFERENT Y S ON LOOMS Filed Deo. 28, 1951 4 Sheets-Sheet 4 ATTORNEYS United States Patent O ANGLES WHICH ARE CONTROLLED BY A PERFORATED CARD, MRE ESPECIALLY FOR THE SELECTIVE INSERTION F DIFFER- ENT YARN SHUTTLES 0N LOOMS Carl Fuchs, Heidenheim-Mergelstetten, Germany, assignor to Wolldeckenfabrik Zoeppritz Aktiengesellschaft, Heidenheim-Mergelstetten, Germany Application December 28, 1951, Serial No. 263,903 Claims priority, application Germany December 28, 1950 Claims. (Cl. 139-172) card, ferent yarn shuttles on looms.

The problem frequently arises, in various techniques, of rotating shafts periodically and automatically through partially in the same direction and partially in the opposite direction. A typical case of this in looms equipped with d effected hydraulically.

Figure 2 is a cross section on the line II-II l, that is to say, a section through the loom.

Figure 3 is a more or less diagrammatical sectional view showing the arrangement by means of which a drum magazine 2 containing .the different of Figure rated card arrangement 16 to 19 1s shown in duplicate, although in actual fact only one is provided. The drum 4 is also shown in duplicate, one at the top and one below (in conjunction with the linked chain 36), although actually only one is provided.

Figure 4 is a cross-section through the drum magazine f a compression spring 44 and by means of cables 47, indicates the actual position of the drum magazine 2 to 4 to the other side of the loom.

Figure 5 indicates the connection of the transverse yoke 2,707,005 Patented Apr. 26, 1955 10 with the control slide valve 9 in the direction of movement (vertically).

In all the Figures 1 to 5, the letters indicate elements of the loom the purpose of explanation'but whic parts represented by which are shown for bear no direct coninvention.

In the drawings:

a is the container for operating liquid (left side of loom).

l b the container for operating liquid (right side of oom c is the pipe for the llow of liquid under pressure from one side of the loom to the other.

is a reed vibrator.

e is the reed beam.

f are the reed blades.

g are the weft path blades rigidly connected with the breast beam h.

h is the breast beam.

z' is the jet arrangement.

k is the jet deflector.

l are the guide-ways for the jet m is the cylinder for the air bra n is the picker.

a is the bottom flap for the shuttle changing cell v.

p is the control device for the shuttle changing operation.

q is the ejector device.

r is the adjustment device.

s is the housing for the ejector device q and the adjuster device r.

t is the reserve shuttle magazine.

u is the displacement servo-motor.

v is the shuttle changing cell.

w is the crankshaft.

x is the reed linkage.

y is the shuttle path.

z is the collecting channel for ejected empty shuttles.

1 are the shuttle cells for the different operating shuttles 48.

2 is the drum magazine rigidly connected with the drum shaft 4 and the rotatable piston 5.

3 is a fixed stop segment of the rotational servomotor which consists of the parts 5..

shaft by which the mounted in suspended fashion.

5 is the rotary piston for the servo-motor 3 to 5 rigidly connected with the drum shaft 4.

6 is the control conduit to the servo-motor 3 to 5 for rotation in a counterclock-wise direction.

7 is the control conduit to the servo-motor 3 to 5 for rotation in a clock-wise direction.

8 is the control casing in which the control slide valves 9 are guided.

9 are the control slide Valves, one for each cell 1.

10 are transverse yokes (2 of them) which transmit the respectively to and are connected at their the latter in force-related manner in a vertical direction (Figure 5): at their bottom ends is located the transverse yoke plate 11 which is engaged by the levers 31 and 32.

11 is the transverse yoke plate rigidly connected with the yoke 10.

12 is a compression spring which forces the yoke plate 11 downwardly rmly against the levers 31 and 32.

13 is the intake pipe for the liquid, preferably oil, to the pressure pump 14.

4 is the pressure pump (if desired, this can also be operated with liquid other than oil, for example, emulsion).

1S are pressure conduits.

16 is the shaft for the perforated card drum on which the said drum is rotatably mounted.

17 is the forated cards 19 travel.

18 1s an eccentric disc rigidly connected with the drum deector k. ke.

drum magazine 2 is perforated card drum over which the perf-` shaft 16: this disc serves to lift the feeler pins 22 during the continued rotation of the perforated card drum 17.

19 is a perforated card, the arrangement of the perforations therein determining the sequence of the colour shuttles.

20 is a lifting cross member which serves for transmitting the movement of the eccentric disc 18 to the feeler pins 22.

21 is a frame for the perforated card device.

22 are feeler pins which can engage in the holes of the perforated cards 19 and thus release the pivotal feeler lever 24.

23 are compression springs which exert a force on the feeler pins 22 in the direction of the perforated card 19.

20are the feeler levers pivotally mounted on a pivot pin 25 is the regulator housing.

26 is the regulating slide valve carrying at its lower end a head which is engaged by the feeler lever 24. This valve is guided in the housing 25 and carries at its upper end a. pair of pistons which control the supply and discharge to and from the lifting plunger 29 through the control bore 28.

27 is a compression spring downwardly on to the lever 24.

28 is the control bore in the housing 25.

29 is the lifting plunger consisting of a piston which is guided in the housing 25 and a stem on which bear the return levers 31 and 32.

30 is a compression spring.

31 is a one-armed return lever.

32 is a two-armed return lever.

33 is a return slide which is connected with the drum shaft 4 through a chain 36 by means of the chain wheel 39. By means of the cams 34 and 35 adjustably arranged on the slide it serves for the return of the deected onearmed and two-armed return levers 31 and 32, respectively, into their bottom initial position when the drum shaft 4 has travelled through the predetermined angle of rotation.

34 is a cam adjustably mounted on the return slide 33: it brings the pertaining deflected two-armed lever 32 into its initial position upon upward movement of the slide 33.

35 is a cam similar to 34: it brings the pertaining deected one-armed lever into its initial position upon downward movement of the slide 33.

36 is the connecting chain.

37 are end securing means slide 33.

38 is a fixed pivot pin 39 is the upper chain drum shaft 4.

4g8is the bottom chain wheel mounted on the fixed pivot pm 41 and 42 are cams rigidly shaft 4 (Figure 4). They signal the position of the drum magazine to the control device p (Figure l) for the shuttle-changing operation on the opposite side of the loom through cables 47 and compensating tension springs 46, which are not indicated in Figure 1. The actuating arrangement 43 to 45 for the cables 47 is only indicated for the cam 42 which has just responded.

43 are feelers for the cams 41 and 42, only the feeler for cam 42 being shown.

44 is a compression spring for the feeler 43.

45 is the securing means for the cable 47 to the feeler 43.

46 is the compensating tension spring for the cable 47.

47 is the cable.

48 are the operating shuttles which contain yarn of different colours or qualities and are disposed in the shuttle cells 1 of the drum magazine 2.

49 is the fixed housing for 3 to 5.

50 to 52 are pivot pins.

53 and 54 are conduits for operating liquid.

The arrangement for the rotation of a shaft through angles pre-determined by perforated cards operates as follows:

As long as one of the shuttles 48 is located in the uppermost shuttle cell 1 according to Figure 4, all the parts illustrated, apart from the shaft 16, remain at rest. If another shuttle 48 is now required, perhaps because a weft thread of another colour or another quality is required for the weaving operation, the arrangement for the which forces the valve 26 for the chain 36 to the for the bottom chain wheel 40. wheel rigidly connected with the the rotational servo-motor connected with the drum rotation of the drum magazine 2 and at the same time the mechanism for the corresponding automatic changing of the shuttle 48 becomes operative hydraulically.

The crank shaft indicated by w in Figure 2 rotates continuously at a constant speed. It transmits its movement in a manner not shown to the shaft 16 of the perforated card arrangement 17 to 19, which rotates at half speed (Figs. 1, 3 and 4). With each revolution of the shaft 16, the eccentric discs 18 lift all the feeler pins 22 of which only one is illustrated by the lifting cross-member 20 (for example, in the manner illustrated), whereby the perforated card drum 17 is freed for rotation. The perforated card drum 17 is thereupon rotated through such an angle, for example 60, that the next following card 19 comes in front of the feeler pins 22. The manner in which cables 47 are secured at either ends and the mode of operation of the entire shuttle replacing mechanism are described in detail in my co-pending patent application Serial Number 263,904, flled December 28, 1951.

' In the position of the feeler pins 22 as shown in Figure 3, the arrangement is at rest. On the contrary, when a feeler pin 22 is in the position as shown in Figure 4 (feeler pin 22 pushed through the perforated card 19), the pertaining feeler lever 24 swings outwardly about the pivot pin 50 and the regulating slide valve 26 is moved downwardly because of the compression spring 27.

Due to this movement, the liquid under pressure supplied by the pump 14 and through the conduit 15 is shut olf between the pistons of the regulating Valve 26 and simultaneously the space located above the lifting plunger 29 is relieved in an upward direction by the control bore 28. The compression spring 30 now forces the parts 29, 32 (31), 10 and 9 upwardly against the action of the spring 12. By this means, the control conduit 6 is supplied with liquid under pressure, while the said liquid can escape from the other side of the rotary servo-motor 3 to S through the conduit 54. The servo-motor 3 to 5 is actuated thus driving shaft 4 and thereby the drum magazine 2 is set in rotation. This rotation continues until the deflected two-armed return lever 32 travels back to its initial position again, due to the engagement thereof by cam 34 the upward movement thereof with the return slide 33, as shown in Figure 3, and closes valve 9 pertaining thereto. Consequently, the desired shuttle 48 is brought into the operative position in the uppermost shuttle cell 1 of the drum magazine 2. It is now no longer possible for any flow to occur in the control conduits 6 the conduits 53 and 54, whereby the drum shaft is held in the required position. The cam 42 (Figure 4) has signalled the present position of the drum through the feeler 43, he compensating spring 46 and the cable 47 to the other side of the loom and thus, as required, an empty shuttle is replaced by a full shuttle of the same type of yarn introduced into the weaving operation on the right side of the loom.

So long as the shuttle 48 with a spool of the same colour and yarn quality is required, the apparatus remains in the rest position according to Figure 3, in the perforated card 19 is disposed beneath any one of the feeler pins 22. lf a shuttle 48 with a spool of another colour or another yarn quality is required, this operation is initiated as described by a hole in the corresponding perforated card 19 through the perforations of which a pin will pass as shown in Figure 4. The arrangement shown in Figures 3 to 5 can be used for as many different colours and different qualities of the weft yarn as the drum magazine has shuttle cells 1. There are always the same number of cams 34 and 35 as there are shuttle cells 1. These cams 34 and 35 are arranged accurately adjustable on the return slide 33, so that the position of the shuttle cells 1 can be fixed for the weft position at the time.

Therefore, instead of replacing the shuttle 48 mechanically by another when there is a change of colour, which is the method usually adopted at the present time, the changeover is effected by an automatic hydraulic arrangement in accordance with the method described and the arrangement illustrated. As a consequence. there is a considerable saving in time and labour and thus a reduction in the operating costs. ln addition, the apparatus described ensures a smooth, positive and silent operation. Since it is possible to use oil as the working liquid` any appreciable wear is also excluded and the life of the equipment is almost unlimited. The entire apparatus is so small that it can be arranged conveniently and unnoticeably inside the loom.

I claim: uid Operable means are provided, also etective when 1. In combination; a rotatable shaft to be moved into a energizing for overcoming said yielding means, and valve plurality of indexe positions, a reversible hydraulic means hydraulically connected with said iluid operable motor connected to said shaft, a plurality of control means normally biased toward a position to exhaust said valves hydraulically connected to said motor and in par- 5 fluid operable means and movable into position for allel with each other, each said valve having a first energizing said fluid operable means. position wherein uid flow therethrough is blocked and 7. In an arrangement according to claim 6 in which an a second position wherein fluid is passed therethrough individual perforated card controlled actuating mechafor actuating said motor in one direction, means nornism is provided for each said valve means. mally urging said valves toward their said first position, l 8. In an arrangement according to claim 7 in which means for selectively and singly actuating said valves into the said shaft supports a rotatable multi-cell shuttle their said second positions, a cam operated means for holder for a loom with the indexed positions of said each valve for moving it from its second to its first posishaft corresponding to the positions of registration of tion, and cams movable with said shaft for engaging said said cells with the picking axis of the loom said loom cam operated means whereby the actuation of any valve l having a multiple compartment reseive shuttle magazine Wil be accompanied by movement of said shaft to the on the side of the loom opposite the rotatable holder, and perdetermined indexed position corresponding thereto means operated by rotation of said shaft for detern an arrangement according to claim l in which mining the selection of shuttles from said magazine in the rotatable shaft carries a drum having a plurality of accordance with the position of said holder whereby cells for receiving shuttles, and the said indexed posiA an exhausted shuttle will always be replaced by a ietions of said shaft being those positions where the said serve shuttle having a like weft thread.. cells register with the picking axis of the loom, of which 9. In combination; a shaft adapted for being rotated the drum forms a part, to a plurality of predetermined indexed positions, a

3. An arrangement according to claim 2 in which said rotary hydraulic servo-motor having a movable part shaft carries a plurality of rotatable cam members, and rigidly attached to said shaft, a plurality of control valves elements associated with said members positioned to be hydraulically connected to said motor and in parallel actuated thereby so that a diterent one thereof is actuated with each other, each said valve having a first position for each different indexed position of said shaft whereby wherein How therethrough is blocked and a second posithe said elements can be employed for creating a signal tion wherein ow is passed therethrough for actuating to control the movement of a reserve shuttle magazine. said servo-inotor, rst resilient means normally urging 4. In combination; a rotatable shaft to be moved to a said valve toward said first position, second resilient plurality of indexed positions, a rotary hydraulic motor means stronger than said first resilient means for selecassociated with the shaft, a plurality of control valves tively actuating said valves singly into their said second hydraulically connected with said motor and in parallel position, and an element for each said valve operable with each other, each valve being noimally urged to- 33 to make the said second resilient means of the perward a tiist position wherein flow therethrough is blocked taining valve ineffective to permit the return of the said and having a second position wherein uid is passed pertaining valve to its said iirst position by said first therethrough for actuating said motor, an actuating memresilient means, Said elements being driven by said ber for each valve movable fiom a normal ineffective shaft so as to become effective upon the shaft ieaching position into position to move the associated valve to its the indexed position corresponding to the: actuated one said second position a cam for engaging each member of said valves following the actuation of the said valve and returning it to its ineffective position, a slide supto its second position to energize said servo-motor. porting said cams, and means for driving said slide by 10. In an arrangement according to claim 9 in which said shaft whereby the actuation of each valve will be there is mounted on the shaft a rotatable shuttle holder accompanied by movement of the said shaft toa different for a loom having a pluiality of cells for receiving one of its indexed positions. shuttles, and the said indexed positions of said shatt In combination; a rotatable shaft to be moved to a corresponding to the positions of alignment of said cells plurality of indexed positions, a rotary hydraulic motor with the picking axis of the loom. associated with said shaft, a plurality of control valves hydraulically connected to said motor and in parallel with References Cited in the file of this patent each other, each said valve being normalllly ugedktowar a first position wherein flow therethroug is loc e an v having a second position wherein fluid is passed thei'e- UNITED STATES PATENTS through for actuating said motor, a lever associated with 112A.I. ECClcS .lluly 18, 1834 each valve having a first ineffective position and being 223,534 Pont Ian. 13, 1880 movable into a second position for actuating the associ- 1,275,701 Kingsbacher et al. Aug. 13, 1918 ated valve to its second position, resilient means urging 1,806,669 Campbell May 26, 1931 each lever toward its said second position, a cam for 2,398,997 Berry Apr. 23, 1946 moving each lever to its said rst position against the 2,425,676 H indle Aug. 12, 1947 bias of said yielding means, a slide supporting said cam, 2,431,642 Hindle Nov. 25, 1947 and means drivingly connecting said slide with said shaft 2,454,603 Heaton Nov. 23, 1948 for movement in synchronism therewith. 2,615,475 Eves Oct. 28, 1952

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