US3827615A - Knitting machine selector jack butt removal apparatus - Google Patents

Knitting machine selector jack butt removal apparatus Download PDF

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Publication number
US3827615A
US3827615A US00382119A US38211973A US3827615A US 3827615 A US3827615 A US 3827615A US 00382119 A US00382119 A US 00382119A US 38211973 A US38211973 A US 38211973A US 3827615 A US3827615 A US 3827615A
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Prior art keywords
hammer
butt
removal
movement
jack
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US00382119A
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English (en)
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F Kuhn
F Rombach
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Fouquet Werk Frauz and Planck
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Fouquet Werk Frauz and Planck
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B37/00—Auxiliary apparatus or devices for use with knitting machines
    • D04B37/02—Auxiliary apparatus or devices for use with knitting machines with weft knitting machines
    • D04B37/04—Auxiliary apparatus or devices for use with knitting machines with weft knitting machines for inserting or adjusting pattern pins or like elements in pattern drums or wheels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/30—Breaking or tearing apparatus
    • Y10T225/371—Movable breaking tool

Definitions

  • the present invention relates to apparatus to automatically program the presence, or absence of selector butts on selector jacks for knitting machines, and more particularly for circular knitting machines, in accordance with a certain Jacquard pattern which the machine is to knit.
  • Jacquard pattern to control circular knitting machines lend themselves, by means of modern electronic reading and other input-output equipment, to automatic, electronic programming.
  • Electronics in Knitting published by the Knitted Outerwear Association, New York, New York 1972 may be noted.
  • Electronic control of knitting machine permits ready adaptability of the machine to a wide variety of patterns without the time consuming and complicated process of manually removing selector butts on selector jacks which control the Jacquard selector mechanisms of the knitting machines.
  • Personnel to operate such electronically machine is, however, not readily available and personnel trained in the complicated mechanical art of properly operating knitting machine is frequently not ready to be capable of likewise maintaining and programming electronically controlled machines.
  • the apparatus therefore, permits use of the mechanical controls, and knitting machines which are familiar to most operators, while simultaneously enabling the knitter to have available the flexibility of electronically controlled patterning or programming, by providing an electronically controlled selector butt programming apparatus.
  • a pattern reading means which derives sequential electrical control signals representative of a textile pattern.
  • a typical reader may be a photoelectric scanner which scans a standard pattern, laid out in a raster.
  • the output from the pattern reading means is a signal which is decoded, to determine whether a selector butt of a selector jack is to be removed in a predetermined position.
  • Selector jacks are fed sequentially in a predetermined path and a removal hammer or the like, is moved in a cocked position, from which, depending on the output signal derived from the decoder, it is released by a sear, or not.
  • the feed movement of the jack itself is synchronized with the movement of the release of the hammer, as well as with the release control thereof, so that, depending on the pattern read by the pattern reader, the hammer will be released to strike a predetermined butt, in a predetermined position on the jack, or not.
  • the jack is fed by means of a threaded spindle which carries along a carriage, engaging a jack to be fed, so that the carriage is moved a predetermined step, for example the distance of one butt from the next, upon one revolution of the spindle (or any other selected fractional angle).
  • the spindle is connected to a shaft with a cam, and sensing switches sense the rotational position of the spindleto provide one of the synchronizing signals, namely the position of a butt before the hammer.
  • the shaft may carry a cam which is used to cock the hammer, the cam being formed with an abrupt notch which acts as a sear, the hammer being struck forward sharply against a butt by a spring wound up when the hammer is cocked by engagement with the cam.
  • a latch is provided which, when the hammer is to strike, is electrically disabled.
  • return of the spindle is obtained by reversing the direction of the drive mo tor, to obtain a very rapid reverse; during such reverse, the hammer is, of course, held in a position disengaging it from the cam and the sear.
  • Synchronism between the hammer operating elements, and control cams on the apparatus is provided by connecting the spindle, providing forward transport of the jack, as well as the cams, by a positive drive engagement, such as a sprocket belt.
  • the reader is connected to a storage device, and the content of the storage device as decoded is compared with the angular position of the cam which controls the butt-striking hammer to ensure synchronization of output signals to release the butt-striking hammer, or not, in dependence on the information read by the reading unit.
  • the drive mechanism is made with interchangeable drive wheels of different diameters, matched to the translatory path the jack is to take, thus easily adapting the apparatus to a wide variety of types and sizes of jacks.
  • the apparatus further includes, in accordance with a feature of the invention, a feedback circuit which monitors the operation of the hammer, that is, if the hammer has moved into interfering position with a butt, thus breaking off a butt, this position is monitored and a signal provided which can control an output-input device similar to the input-output reader, to mark a pattern, which will Serve as a control pattern. It should be identical to the pattern which is being read by the pattern reader.
  • a punched tape can be made in order to provide a record of the pattern which has been read, in different form (alternatively, punched cards or other storage devices may be programmed) so that only one of the comparatively expensive readers may be required for a number of butt break-out hammer units controlled by the punch paper tape, in order to make more than one set of butts in accordance with a single pattern.
  • FIG. 1 is a generally perspective view of the butt break-out mechanism of the apparatus in accordance with the present invention
  • FIG. 2 is a fragmentary transverse partly sectional view illustrating the hammer break-out mechanism, just after the hammer has struck to break away a butt;
  • FIG. 3 is an illustration similar to FIG. 2 and showing the hammer as it is being moved into cocked position, and in advance of a jack being moved to butt-striking position;
  • FIG. 4 is a view similar to FIG. 2, with the hammer in position during retrace of the jack transport carriage;
  • FIG. 5 is a general perspective view, partly broken away, from behind, of the apparatus of FIG. 1, and showing the jack transport carriage, and synchronization of movement;
  • FIG. 6 is a generally schematic block diagram of the electronic control portion of the apparatus.
  • FIG. 7 is a detailed view showing the interconnection of the electrical control circuits, the cams, and the hammer operation and
  • FIG. 8 is a highly schematic block diagram illustrating the interconnection of the various elements of the hammer control and synchronization unit.
  • a machine table 1 has located thereon two trays 8, 9 thereon.
  • Tray 8 holds a stack of new selector jacks 10, which have a group of uninterrupted, break-away selector butts 21 thereon.
  • the jacks 10 can be moved to the left (FIG. 1) through a guide unit 3 (FIG. 1, FIG. 2) secured by means of screws 4 (FIG. 2) to a support 2, which defines also the back wall of a butt tray 22.
  • Support 2 is connected to a plate 5 (FIG. 2) of the table, secured in suitable manner to the table 1.
  • the tray 9 to receive jacks 10, after the butts have been broken off, is to the left of the butt tray 22, so that movement of the jacks, as seen in F IG.. 1, is from right to left.
  • a transport pawl 14 (FIG. 5) is located to engage a jack from the rear. Pawl 14 is movable transversely, to transport the separate jacks 10 in translatory movement through the unit 3 from tray 8 to tray 9.
  • the jacks 10 when received from a jack manufacturer, having projecting butts, separated by thin slits, and projecting in comb-like manner from a base strip.
  • the various butts of the jacks 10 is selectively broken away during their passage through the apparatus.
  • a jack 10, with butts selectively removed is seen in FIG. 6, at the output side of unit 54.
  • the butts 21 of the jacks 10 are broken off by means of a hammer 7, which is journaled in a hammer housing 11 (FIGS. 2-4), secured to the machine table 1.
  • the butts 21 severed by hammer 7 from the jacks 10 are collected in tray 22, for disposal, re-melting or sale as scrap.
  • Hammer 7 is rotatably journaled on a shaft 23 secured in hammer housing 11.
  • the hammer 7 is secured to, preferably unitary with an upper lever arm 29, a lower shorter lever arm 28, and an approximately rightangled projection lever stub 27.
  • Lever stub 27 is located immediately adjacent a cam disk 12, rotatable with a horizontal cam shaft 13.
  • Cam shaft 13 is, in turn, journaled in bearings 70, 71 (FIG. 5), which are secured to the machine table 1.
  • the cam disk 12 has an approximately spirally extending cam track 41, and a steep shoulder-like jump 42. Cam disk 12 engages the lever stub 27.
  • the long arm 29 carries the hammer head 26, extending at approximately right angles from lever arm 29. At its forward face it is narrowed, having a width roughly that of the smallest butt 21 to be expected in use, or slightly narrower.
  • hammer 7 is elastically retained by a compression spring 43 which, at its other side, is retained in a counter bearing, secured to the machine table 1.
  • the counter bearing includes a spring end disk 73, secured in a suitable bore of a spring housing 44.
  • Spring housing 44 is attached to machine table 1, for example by screws, by welding or in any other suitable manner (not shown).
  • the bias of spring 43 and, thus, the force with which the hammer 7 will impinge against a butt 21 can be adjusted by changing the position of set screw 45 in spring housing 44; the set screw is locked in place by means of a counter nut 46, and bears against the spring disk 73.
  • a support bracket, secured to plate 5 by suitable means (not shown) extends downwardly, beyond the lower region of the lower level arm 28.
  • a double-armed control lever 38 is journaled, roughly in the middle, over a bolt 39.
  • the control lever 38 is linked to the armature of a solenoid 20, likewise secured to depending bracket 6.
  • lever 38 Upon energization of the coil of solenoid 20, lever 38 is tipped in counterclockwise direction about the fulcrum formed by bolt 39, counter the force of a compression spring 40, the other end of which is secured in a holding bracket 47 attached to bracket 6. Movement of lever 38 in clockwise direction is limited by a pin 48 secured to bracket 6.
  • the free am 28 of hammer 7 ends in a terminal book 49, which can fit into a similar hook-like end portion 38a of lever 38. If the hammer 7 is moved in the position shown in FIG. 3, and solenoid 20 is deenergized, spring 40 will press the lever 38 in clockwise direction and the hook end 38a can engage behind the hook end 49 of hammer 7 (FIG. 3). This locks the hammer 7 in position, regardless of the position of the cam disk 12, and prevents movement of the hammer into impinging or interfering position with respect to a butt 21 on a jack 10 when the disc 12 has rotated to such an extent that the stub 27 on hammer 7 could drop behind the abrupt change in the spiral configuration of the cam on disk 12, as seen in FIG. 2.
  • the hook end 49 at the side facing the lever 38, is formed with an inclined surface 49a which roughly matches the degree of inclination of the outer surface of the hook end 38a on lever 38, to form inclined sliding surfaces which permit the hammer 7, as it is moved from the position of FIG. 2 into the position shown generally in FIG. 3, to press downwardly against the hook end 38a and permit the hook end 38a of lever 38 to snap behind the hammer hook end 49.
  • the lever 38 thus does not inhibit movement of the hammer 7 in counter-clockwise direction.
  • Jacks 10 are transported horizontally in front of hammer 7, as best seen in FIG. 5, by means of the carrier pawl 14, secured to a cross slide or carriage 15.
  • Pawl 14 can swing about a vertical axis, as seen in FIG. 5, whereas carrier 15 can slide along a pair of slider rods 17, 17.
  • the guide rods 17 are held in tenninal bearing blocks 16, 19.
  • the latch 14 is so arranged that upon movement towards the right in FIG.
  • the latch 14 cannot swing towards the left, and thus will carry a jack along upon movement of the carriage to the right; upon retrace of the carriage toward the left, however, the latch can deflect out of the way, against pressure of a small spring (for example a spiral spring within, or above carriage 15, not shown) to slip against the next jack, and grip the next jack upon reaching its end position.
  • a small spring for example a spiral spring within, or above carriage 15, not shown
  • a spindle 18 is located between the two guide rods 17 17, journaled in the two end bearing blocks 16, 19, connected to the carriage block 15 by means of a spindle nut 15a (FIG. 2).
  • Spindle 18 extends with at least one end beyond the bearing blocks, as shown beyond bearing block 16.
  • the projecting end carries three sprocket belt pulleys 36, 62, 64, fixed against rotation with respect to the spindle.
  • Sprocket pulley 36 is connected by means of a sprocket belt 60 to the sprocket pulley 35 of a reversible electric motor 31, suitably secured below the machine table 1'(FIG. 5).
  • Sprocket pulley 64 of spindle 18 is connected by means of a sprocket belt 60 with sprocket pulley 37 secured in rotation to transmitting connection, for example by means of a key to the cam shaft 13.
  • Sprocket pulley 62, secured to spindle 18 has a different diameter than sprocket pulley 64. It is associated with a sprocket pulley 63 secured to cam shaft 13. Providing two sprocket pulleys 62, 63 permits, upon transfer of the sprocket belt 60a, a different transmission ratio between the spindle 18 and the rotation of cam shaft 13.
  • the sprocket belts 60a, and the sprocket pulleys provide slip-less mechanically exactly synchronized transmission of rotation between spindle 18 and the cam shaft 13.
  • the rotation of cam disk 12 is synchronized with the rotation of spindle 18 and hence the linear translatory movement of carriage 15.
  • the pulleys 62, 64 and 37, 63 may also be made interchangeable for other sets of pulleys, if desired.
  • a bracket 50 is secured to the housing 11 for the hammer assembly, and a magnet 32 is attached to bracket 50.
  • Magnet 32 has an annature 33 which is connected to a bolt 65, the axis of which is aligned with the short lever arm 28 of hammer 7.
  • the free end of the bolt 65, at the other end of the armature 33, is surrounded by a compression spring 34, bearing on the one hand against the housing of magnet 32and on the other against a nut-counternut combination 31, the spring 34 bearing between the housing and the nuts returning the armature 33 in the position shown in FIG. 2, when the magnet is deenergized.
  • carriage 15 In starting position, carriage 15 is in its left limit position (FIG. 5) close to the bearing block 16.
  • the carrier pawl 14 engages behind the end face of a jack 10 in the blank jack magazine, or tray 8.
  • the cam track 41 of cam disk 12 bears against the lever stub 27 of hammer 7.
  • Magnet 32 is deenergized.
  • Magnet 20 is deenergized.
  • the compression spring 40 holds the lever 38 in contact with pin 48, so that lever 38 will be in the position of FIG. 2.
  • carriage 15 is returned to the left starting position to carry the next jack 10 from the new-jack tray 8 to the programming apparatus and into the reception tray 9.
  • motor 31 is changed in its direction of rotation to reverse, so that spindle 18 will rotate in reverse direction, to move the carriage 15 backwardly.
  • the pawl 14 can deflect, so that its return motion is not inhibited.
  • the speed of the motor 31 may be higher for the return motion.
  • Cam shaft 13 is coupled to spindle 18 and cam shaft 13 likewise moves backwardly.
  • magnet 32 is energized simultaneously upon reversal of motor 31, so that bolt 65 moves into the position shown in FIG.
  • a control such as a limit switch, stops the motor and reverses its direction of rotation to forward direction, and at forward speed, while simultaneously deenergizing magnet 32.
  • the return spring 34 moves bolt 65 back into the starting position in accordance with FIG. 2, and remains out of operation with respect to hammer 7 until the next return movement of the carriage 15.
  • Motor 31 controlling magnet 20, return release magnet 32, and reciprocating motion of the carriage 15 is controlled by a control system, basically shown in FIG. 6.
  • the butts 21 of jacks 10 are broken out in dependence on a predetermined pattern, which the knitting machine is to knit, using the pattern jacks 10, prepared in accordance with this program.
  • This pattern is drawn on a so-called pattern raster 57, which carries colored markings in the x-direction and the y-direction, as well known.
  • pattern raster 57 which carries colored markings in the x-direction and the y-direction, as well known.
  • standard, well known technology can be used, for example as described in Double Knit Fabric Manual particularly pages 45 et seq. and page 104 et seq., see also FIG. 10 (published by Knitted Outerwear Association, New York).
  • the markings of the raster or pattern 57 are converted into electrical signals by a well known x-y reader 51. They are scanned in the x-direction and the y-direction, the reader providing output signals characteristic of the colored markings on the pattern 57 (FIG. 6), which are applied by means of line 51a to an electronic storage device or memory 52. Memory 52 delivers the electrical signals, characteristic for the colored markings of the pattern 57, over line 52a in timed synchronism to a control and decode unit 53.
  • the control and decode unit 53 has an output line 53a on which electrical pulses are provided to command operation of the hammer 7 to strike, or not to strike, relative to each butt of the jack which is carried by the carrier pawl 14 past the hammer 7.
  • the signals from line 53a are applied to unit 54 which, generally, includes the apparatus shown in FIGS. 2-4 and further includes synchronizing elements, so that the signals on line 53a will arrive at the proper time for command of the magnet 20 controlling operation of the hammer
  • a monitor and input-output element 55 is provided which checks that the pattern butts 21 of jacks 10 are broken out by hammer 7 really as commanded in accordance with the markings on the pattern 57.
  • the monitoring unit 55 thus checks the operation of the hammer control and synchronization element 54.
  • Mon itoring unit 55 is connected to the control and decode unit over a line 530 and to the hammer control and synchronization unit over a line 54a.
  • Line 54a transmits signals having characteristics which indicate the operation of the hammer 7, and monitor unit 55 converts these signals into suitable output signals for a printer unit which prints the representation of the operation of the hammer, in a similar X-Y raster, to provide a control or monitoring pattern 56, corresponding to the pattern which was actually made by the hammer 7.
  • monitor unit 55 converts these signals into suitable output signals for a printer unit which prints the representation of the operation of the hammer, in a similar X-Y raster, to provide a control or monitoring pattern 56, corresponding to the pattern which was actually made by the hammer 7.
  • To check the operation it is therefore only necessary to compare the command pattern 57 with the monitor or control pattern 56. Any errors will immediately become apparent and it is then only necessary to pick out the specific jack and to replace it with a jack 10 having properly broken-out butts 21.
  • FIG. 6 The basic construction of the electronic circuit of the monitoring and decoding unit 53 is seen in FIG. 6.
  • the basic circuit of the hammer control and synchronization unit 54 is shown in FIG. 8. Obvious details, such as intermediate amplifiers, buffers, and the like have been omitted since they do not affect the understanding of the operation of the circuit.
  • Memory 52 may be a customary magnetic core memory, a drum memory, or any other suitable commercial electronic memory device.
  • the controller and decoder 53 includes an AND-gate and an amplifier 81. Electrical signals, read by reader 51 and transferred through memory 52 over line 52a are applied to AND-gate 80. A synchronization signal is applied over a line 53b from hammer control unit 54 to the controller and decoder, likewise applied to AND-gate 80. The output of the AND-gate 80 is connected over intermediate amplifier 81 with the output line 53a of unit 53. The synchronization signal is likewise transmitted over line 52b to memory 52 to synchronize reading of the memory. The synchronization signal is likewise transmitted over line 52c to the reader 51.
  • a microswitch 58 (FIG. 5) engaging a cam disk 30 secured to cam shaft 13 provides synchronization signals representative of the angular position of the cam shaft 13.
  • the microswitch 58 has an operating element 58a, which rides on the circumference of the cam disk 30 secured, for example, beyond the bearing 71 (FIG. 5).
  • Switch 58 itself, is suitably secured beneath the table 1.
  • the cam disk 30 has an approximately spiral cam track with a notch 30a which, when pin 58a drops in the notch, operates the switch.
  • Switch 58 may, alternatively, be mounted as seen in FIG. 2 to engage'the track 41 of disk 12 directly. Thus, a separate cam disk 30 need not be used.
  • the arrangement is so made that the pin 58 has a face which (and the shoulder 42 may be formed with a slightly inclined edge, just enough to permit the small travel of switch pin 58 to ride thereover but not enough to interfere with snapping action of the hammer).
  • the switch operation is so set that it occurs approximately at the position shown at 83, FIGS. 2, 3, of curve track 41.
  • a monitoring switch 59 is associated with hammer 7, and acting against short lever arm 28. It is secured by means of a small bracket 59b on housing 11. Switch 59 provides an electrical signal over line 54a to an AND- gate 90 in monitor unit 55. The other input of the AND-gate is connected to the output of amplifier 81 in the control unit 53, over line 52c. The signals derived from switch 59 are characteristic of the operation of the hammer 7. Operation of the hammer 7 should occur only when the hammer moves in the position shown in FIG. 2, that is, when a butt 21 is to be broken out from a jack 10. The output of the AND-gate 90 controls an output printer 91, which effects generation of the control of monitor pattern 56.
  • a transfer element 200 changes state upon receiving a signal from one of the limit switches, to change the direction of rotation of the motor 31 (for example by changing the polarity of the field winding of the motor).
  • the transfer element 200 may be, for example, a bistable flip-flop, a two-position type latching relay, or the like operating in a double-throw mode.
  • a counter 100 (FIG. 8) is connected to the switch 58 to count the number of signals which are derived therefrom and representative of the number of revolutions of cam shaft 13.
  • a pulse is obtained from counter 100 and applied to transfer switch unit 200.
  • the transfer switch 200 then would include an AND- gate; upon sensing both that the requisite number of pulses have been received and that the carriage is at a limit position, the AND-gate then controls the transfer switch. A check is thus obtained that both the mechanical operation is proper (operation of the limit switch) and that the electrical system is functioning (operation of counter and pulses from cam shaft 13).
  • either the electronic counting arrangement, or the limit switches, may be omitted.
  • the counter Upon return movement of the carriage, the counter will then count backwards and when it reaches a count stage of 0, will provide another pulse to again cause changeover of transfer switch 200'.
  • Line 52a will then transmit from memory 52, upon each revolution, a signal representative of the color representation of the pattern 57, the signal being applied to AND-gate in unit 53, amplified by buffer amplifier 81 and applied to line 53a, in order to command the control solenoid 20.
  • Solenoid 20 will only then have a command signal applied thereto when the second input to AND-gate 80, connected to synchronization line 53b, likewise has a signal thereon.
  • the hammer will then operate, as previously described, and strike a butt to punch out a butt at the appropriate position.
  • AND-gate 80 additionally ensures synchronization of operation of the hammer with the position of the jack 10 in front of the hammer.
  • a control pulse is then conducted over line 53a to the magnet 20, to tip lever 38 in counterclockwise direction and, upon continued rotation of cam disk 12, permit the hammer 7 to drop off shoulder 42 of the cam and strike the butt with the force delivered by the compressed spring 43 (FIG. 2).
  • the synchronization pulses derived from switch 58 are counted by counter 100 which commands the transfer unit 200 to change rotation of the motor 31, if, at the same time (or prior thereto) the carriage has reached its limit as indicated, for example, by a limit switch.
  • a return command pulse is provided which: (1) commands motor 31 to change direction of rotation and (2) energizes magnet 32 over line 32a (FIG. 8) in unit 54 so that magnet 32 is energized and moves bolt 65 to lift hammer 7 so it cannot be engaged by cam disk 12 and jam against shoulder 42 in cam track 41.
  • transfer unit 200 is again energized by a suitable pulse, causing transfer unit 200 to change state, causing motor 31 to again change direction of rotation back to forward direction, and disabling energization of magnet 32.
  • Reversal of motion of motor 31 can be accompanied, additionally, by application of a higher operating potential, so that the motor will run at a higher speed pro-' viding a fast return.
  • Other return movements can be used, for example, the motor may operate always in one direction, and be provided with an electromagnetic clutch which is normally energized to drive the feed spindle 18 and cam shaft 15. Simultaneously, a coil spring is wound up, attached by a cable to the carriage 15. When the carriage has reached the right limit, as determined by counter 100 and/or a limit switch, the clutch is tie-energized, permitting rapid return of the carriage.
  • the clutch may be connected in the rotary system between the motor and the spindle, that is, for example on the motor shaft; or the clutch may be a release-type clutch in which a spindle nut segment engages the spindle, or disengages therefrom; the return movement being similar to the rapid return movement of a typewriter platen. If the motor continues to rotate in one direction, and only the carriage disengages, different shapes of cams can be selected and lift-off magnet 32 may be omitted; the counter 100 which counts the revolutions then is preferably commanded to count in one direction only, set to O by a left-side limit switch, activated when the carriage 15 has reached the rest position at the left side of the apparatus as illustrated in FIG. 5.
  • feed or transport speed 4 cm/sec. This corresponds to 900 hammer operations per minute.
  • Total production including time to return the carriage from its right terminal to its left terminal position: 5 jacks per minute, which corresponds to total time to 600 jacks for a 36-feed knitting machine of minutes.
  • Reader 91 is coupled to an output-input record unit 56', which, in its simplest form, can be a paper tape punch, a digital magnetic tape recorder-reader, a card punch, or the like.
  • an output-input record unit 56' which, in its simplest form, can be a paper tape punch, a digital magnetic tape recorder-reader, a card punch, or the like.
  • a permanent record in a form different from the input X-Y pattern 57 can be obtained, which can be fed into a similar record reader, to be connected to line 51a in other apparatus instead of a photoelectric reader like reader 51.
  • Photoelectric X-Y readers are more expensive than punched paper tape readers, and thus a pattern once read on a photoelectric reader can be converted by the apparatus readily into a different form, from which sets of selector jacks can be made to duplicate the pattern originally read.
  • the second pattern is then commanded directly by, for example, punched tape.
  • the output record generator 91 may be omitted entirely and reliance be placed on a paper tape, the signals of which can be fed into a tape reader for electrical comparison with the signals applied to memory 52, and determination of congruence, for example by means of an AND-gate which provides an alarm signal in case of mismatch.
  • Jacquard selector jack programming apparatus in which the selector jacks have removable selector butts, comprising a pattern reading means (51) deriving sequential electrical control signals representative'of a textile pattern;
  • selector butt removal means (7) having a removal position and a blocked position and located along said predetermined path;
  • jack position synchronizing means (12, 58, 130; 13, 63, 64) synchronized with feed of any selector jack over said path and providing an instantaneous jack position signal representative of the position of a jack in said path opposite the butt removal means
  • control and decoding means (53) being connected to said movement control means (20) and providing a release signal to permit the power means to move the removal means (7) into removal position if the control signal, as decoded by said control and decoding means, has a characteristic commanding removal of a butt, said control and decoding means inhibiting application of the release signal if a butt removal is not commanded, the butt removal means then remaining in blocked position;
  • circuit means connecting the jack position signal to the movement control means (20) to signal that a butt is present before the removal means, and to synchronize operation of said butt removal means and the feed of any jack over said path.
  • the feeding means comprises a threaded spindle (l8) and means (31, 35, 36, 60)
  • a carriage (14, engaging a jack to be fed, said carriage being mounted for translatory movement on the spindle upon rotation thereof to carry the jack in a rectilinear path;
  • the position synchronizing means comprising a shaft (13) and camming means (12, 30) thereon, switching means (58, 58a) located in engagement with said camming means and operative upon predetermined rotary positions of said shaft, as sensed by said camming means;
  • selector butt removal means (7) comprises a hammer head (26) having a projecting end movable between a butt clearing and a butt removal position;
  • a hammer lever (28, 29) joumalled for rocking movement between said positions, and carrying said head;
  • the power means comprises a power spring (43) bearing against the hammer lever;
  • the movement control means comprises a holding lever (38), and a solenoid (20) to operate the holding lever, the holding lever (38) being located to be engageable with the hammer lever.
  • Apparatus according to claim 1 further comprising movable power means ,(31, 12, 13) engaging (41, 27) said selector butt removal means (7) and acting on said removal means in a direction counter the force of said power means (43) to store energy in said power means;
  • the movement control means is located to engage said butt removal means, if butt removal is not commanded, upon release of the sear;
  • the jack position synchronizing means provides said jack position signal to the movement control means in advance of disengagement of said movable power means to permit movement of said butt removal means while said butt removal means is engaged by said movable power means and thereby permit free movement of said movement control means between engaged and disengaged position with respect to the removal means.
  • the movable power means comprises a rotatable shaft (13) and a cam (12) thereon;
  • the butt removal means comprises a hammer (7, 26)
  • said movement control means 20 comprises a movable hook (38, 38a) located in said rocking path intermediate said forward and rear limits, and a solenoid moving said movable hook between a position interfering with free rocking movement of the hammer, or non-interfering position, depending upon energization of said solenoid;
  • said jack position synchronizing means provides said jack position signal to the solenoid when said hammer is in an intemiediate position between said limits and clear of said hook to provide for play between said hook and said hammer when the hook is moved upon energization of said solenoid.
  • the movement control means comprises a rotatable shaft (13) and a cam (12) thereon;
  • the butt removal means comprises a hammer (7, 26)
  • reversible drive means (31) are provided rotating said shaft (13) in two directions of rotation;
  • disengagement means comprises has caused the butt removal means to operate, if commanded to do so by the movement control means, or movement of the butt removal means was inhibited;

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US00382119A 1972-07-29 1973-07-24 Knitting machine selector jack butt removal apparatus Expired - Lifetime US3827615A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2237392A DE2237392A1 (de) 1972-07-29 1972-07-29 Maschine zum selbsttaetigen, mustergemaessen ausbrechen von musterkaemmen fuer strickmaschinen, insbesondere jacquardrundstrickmaschinen

Publications (1)

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US3827615A true US3827615A (en) 1974-08-06

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ID=5852105

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Application Number Title Priority Date Filing Date
US00382119A Expired - Lifetime US3827615A (en) 1972-07-29 1973-07-24 Knitting machine selector jack butt removal apparatus

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US (1) US3827615A (enrdf_load_html_response)
JP (1) JPS50100360A (enrdf_load_html_response)
BR (1) BR7305782D0 (enrdf_load_html_response)
CH (1) CH557911A (enrdf_load_html_response)
DD (1) DD105476A5 (enrdf_load_html_response)
DE (1) DE2237392A1 (enrdf_load_html_response)
ES (1) ES417290A1 (enrdf_load_html_response)
GB (1) GB1407715A (enrdf_load_html_response)
IT (1) IT991848B (enrdf_load_html_response)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62206070A (ja) * 1986-03-04 1987-09-10 グンゼ株式会社 パタ−ンジヤツク切断装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3047217A (en) * 1961-01-26 1962-07-31 Kalin I Sheppard Apparatus for forming drum jacks
US3542269A (en) * 1968-06-13 1970-11-24 Strickmaschinenbau Veb Apparatus for breaking or forcing out the foot portions of pattern sinkers for jacquard knitting machines
US3738553A (en) * 1972-02-22 1973-06-12 Stibbe Monk Development Ltd Machine for the preparation of pattern carriers for circular knitting machines
US3747191A (en) * 1971-03-25 1973-07-24 Fouquet Werk Frauz & Planck Apparatus for placing of control pins, or breaking off of control butts of control elements in jacquard selectors for textile machinery
US3762636A (en) * 1971-01-25 1973-10-02 Christensen R Apparatus and method for producing a silk screen matrix
US3782625A (en) * 1970-05-14 1974-01-01 J Bitterlich Method for automatically controlling the punching of control cards for making patterned textiles in conformity with a sample design

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3047217A (en) * 1961-01-26 1962-07-31 Kalin I Sheppard Apparatus for forming drum jacks
US3542269A (en) * 1968-06-13 1970-11-24 Strickmaschinenbau Veb Apparatus for breaking or forcing out the foot portions of pattern sinkers for jacquard knitting machines
US3782625A (en) * 1970-05-14 1974-01-01 J Bitterlich Method for automatically controlling the punching of control cards for making patterned textiles in conformity with a sample design
US3762636A (en) * 1971-01-25 1973-10-02 Christensen R Apparatus and method for producing a silk screen matrix
US3747191A (en) * 1971-03-25 1973-07-24 Fouquet Werk Frauz & Planck Apparatus for placing of control pins, or breaking off of control butts of control elements in jacquard selectors for textile machinery
US3738553A (en) * 1972-02-22 1973-06-12 Stibbe Monk Development Ltd Machine for the preparation of pattern carriers for circular knitting machines

Also Published As

Publication number Publication date
IT991848B (it) 1975-08-30
DE2237392A1 (de) 1974-02-14
BR7305782D0 (pt) 1974-07-25
DD105476A5 (enrdf_load_html_response) 1974-04-20
ES417290A1 (es) 1976-03-16
GB1407715A (en) 1975-09-24
JPS50100360A (enrdf_load_html_response) 1975-08-08
CH557911A (de) 1975-01-15

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