US3690127A - Defective latch needle detector and control network therefor - Google Patents

Defective latch needle detector and control network therefor Download PDF

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Publication number
US3690127A
US3690127A US124321A US3690127DA US3690127A US 3690127 A US3690127 A US 3690127A US 124321 A US124321 A US 124321A US 3690127D A US3690127D A US 3690127DA US 3690127 A US3690127 A US 3690127A
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conductive
switch
current flow
knitting machine
feeler
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US124321A
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Edward M Tellerman
Jose Castillo Deniega
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Stop Motion Devices Corp
IRO Inc
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Stop Motion Devices Corp
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Assigned to IRO, Inc. reassignment IRO, Inc. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: VANGUARD SUPREME MACHINE CORPORATION A NC CORP.
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/10—Indicating, warning, or safety devices, e.g. stop motions
    • D04B35/18—Indicating, warning, or safety devices, e.g. stop motions responsive to breakage, misplacement, or malfunctioning of knitting instruments

Definitions

  • a control network is provided and is responsive to the closing of the switch for interrupting the energization of the drive means for the knitting machine.
  • the control network provides sufficient power for lighting as many detector lamps as are activated at one time, while still providing the requisite power for interrupting the energization of the knitting machine drive means.
  • This invention relates to knitting machines, particularly circular knitting machines in which the latches of the latch needles must remain open during the knitting operation or operations thereof. In the event that such latches are not fully opened as required, and the knitting machine continues to operate, the product being knit will be defective and essentially worthless. Accordingly, it is of prime importance to detect a closed latch and to thereupon stop the operation of the knitting machine, thus preventing the production of faulty goods or products, as well as avoiding the waste of valuable machine time.
  • an improved defective latch needle detector is provided, which also constitutes an improvement over prior US. Pat. No. 2,896,037, issued July 21, 1959, assigned to the assignee hereof.
  • the detector of the present invention includes a resilient feeler which is placed in the path of movement of any closed latches.
  • the resilient feeler is carried at one end of a coil spring which is provided with an internal core held in spaced relation therewith by an insulating sleeve.
  • the coil spring and core define a normally open switch when the feeler remains undeflected, which is the normal condition when the latches are open.
  • the feeler will be deflected thereby, in turn flexing the coil spring and causing the latter to make contact with the core, thus closing the switch and activating the control circuitry for the stop motion and interrupting the drive motor of the knitting machine.
  • the present detector is not only activated upon the occurrence of a closed latch, but also upon the occurrence of a defective latch needle, whose latch is open, but which has accumulated thereon an excessive amount of lumps of fuzz.
  • the detector herein acts both as a closed latch detector and as a needle protector.
  • the switch defined by the coil and core energizes a control circuit which includes an electronic gate controlled device for providing instantaneous activation of the stop motion.
  • Another object of the invention is the provision of a power pack which furnishes the requisite amount of current for lighting the lamp associated with each detector, regardless of how many detectors are simultaneously activated, while at the same time providing the proper amount of current for controlling a relay of sufficient sensitivity for operating the stop motion.
  • Another object is the provision of a power pack for the closed latch detector control circuit which is compatible with other faulty yarn detectors normally provided on the same knitting machines.
  • FIG. 1 is an elevation view of a portion of a knitting machine provided with a faulty latch needle detector in accordance with the invention
  • FIG. 1a is a fragmentary view similar to FIG. 1 showing another defective condition of the latch needle
  • FIG. 2 is a longitudinal section of the detector taken along line 22 of FIG. 1, on an enlarged scale, showing the feeler in its normal, undeflected, condition;
  • FIG. 3 is a fragmentary view similar to FIG. 2 and also showing the feeler in deflected condition due to engagement thereof by a defective latch needle;
  • FIG. 4 is a circuit diagram showing the circuitry associated with the detector in accordance with the invention.
  • FIG. 4a is a modification of the circuit diagram shown in FIG. 4;
  • FIG. 5 is a circuit diagram showing a power pack used in conjunction with detectors in accordance with the invention.
  • FIG. 6 is another embodiment of a power pack used in conjunction with detectors in accordance with the invention.
  • FIG. 1 there is shown a conventional knitting machine latch needle 10 whose butt 12 is received in cam track 14 defined in cam 16 of cam box 18. Rotation of needle cylinder 20 of the knitting machine will provide, in a conventional manner, the desired axial movement of latch needle 10, as dictated by the associated cam.
  • latch needle 10 includes a latch 26 shown in full lines in its normal fully opened condition and in dashed lines in its undesired closed condition intended to be detected.
  • Detector device 22 is mounted so that its feeler 28 is in the path of latch 26 when in its closed condition, as well as in the path of an accumulation of lumps of fuzz 27 on latch needle 10, though its latch 26 is open, as best shown in FIG. 1a.
  • detector 22 comprises a generally tubular housing 30 provided at one end thereof with a bushing 32 apertured at 34 to receive a coil spring 36, a portion of which extends outwardly of bushing 32.
  • Coil spring 36 is retained within bushing 32 by means of sleeve 38 which also retains core 40 therewithin, in spaced relation with coil spring 36.
  • the outer end of coil spring 36 is closed by plug 42 which carries the feeler 28.
  • Core 40 and coil spring 36 define a normally open electrical switch when feeler 28 is in its undeflected position, as shown in FIG. 2. Accordingly, bushing 32 and sleeve 38 are made of electrically insulating material to prevent electrical contact between core 40,
  • Plug 42 is also made of insulating material to prevent electrical contact between feeler 28 and spring 36.
  • a compartment 44 is defined between flange 46 and the other end of housing 30.
  • Such compartment houses a lamp 48 which partially projects outwardly of housing 30, and is provided with a lens 50 whose rim 52 carries reset ring 54.
  • Compression spring 56 biases rim 52 and ring 54 against end ring 58 affixed to housing 30. With this arrangement, depression of lens 50 against the spring action displaces reset ring 54 from engagement with end ring 58.
  • rings 54 and 58 define a normally closed switch whose function will be more fully discussed hereafter.
  • Housing 30 also defines a compartment 60, between flange 46 and bushing 32 wherein there are housed the various electrical and electronic components which will be more fully discussed hereafter.
  • Lead wire 62 extends from compartment 60 outwardly through opening 64 in housing 30.
  • detector 22 The operation of detector 22 is best shown with reference to FIG. 3 wherein the solid lines show the position of feeler 28 and coil spring 36 during normal operating condition and wherein the dashed lines show their positions when the feeler is deflected in response to engagement by a closed latch, or by a needle whose latch is open but which has accumulated thereon an excess of lumps of fuzz.
  • a needle having a closed latch or a needle having an open latch but having accumulated thereon an excess of lumps of fuzz shall be referred to as a needle having a defective condition.
  • the engagement of feeler 28 by a needle in defective condition deflects the feeler which in turn flexes coil spring 36 whose turns will contact core 40, thus closing the switch defined by the spring and the core. The closing of such switch as will hereafter be seen, activates the stop motion for the knitting machine to interrupt the drive motor thereof.
  • feeler 28 As evident from FIG. 3, it is the mechanical deflection of feeler 28 which causes the accompanying electrical contact between coil spring 36 and core 40. Thus, it makes no difference whether there is good electrical contact between feeler 28 and closed latch 26, and the detector will be operative when either or both closed latch 26 and feeler 28 are electrically insulated from each other by oil, lint, or any foreign matter likely to gather about either the feeler or the latch. Furthermore, feeler 28, being insulatingly mounted by plug 42 will eliminate sparking between feeler and closed latch, even when they are not electrically insulated from each other by foreign matter. Further, since detection is not dependent on electrical contact between latch and feeler 28, the latter need not be made of an electrically conductive material. Spring 36 is closely wound and of small diameter, as for example 0.125 inches so that the radial distance between core 40 and spring 36 is of such small magnitude that deflection of feeler 28 causes near instantaneous engagement of core and spring.
  • FIG. 4 shows the simplest kind of control circuitry therefor.
  • the dashed lines A represent the portion of the circuitry located within detector device 22 which includes lamp 48, normally closed reset switch defined by reset ring 54 and end ring 58, the normally open detector switch defined by spring 36 and'core 40, as well as thyristor 66, resistors 68 and 70 and condenser 72.
  • the housing 30 is grounded as at G and lead wire 62 is connected to a relay 74, the other end of which is connected to negative terminal 76 of a power supply whose positive terminal 78 is grounded.
  • relay 74 When relay 74 is unenergized, switch 80 is in the position shown in FIG. 4 in which condition motor M of the knitting machine is energized, and when relay 74 is energized, it will cause the opening of normally closed switch 80 to interrupt motor M.
  • switch 36-40 When the knitting machine is operating satisfactorily, i.e., without the presence of any latch needles in defective condition, switch 36-40 is open and there is no current flow through thyristor 66 and thus no energization of relay 74.
  • current flow is established as follows: from positive terminal 78 to ground, through reset switch 54-58, through lamp 48, through closed switch 36-40, through the controlelectrode and the cathode of thyristor 66, through conductor 62, relay 74 and to negative terminal 76.
  • Such current flow will immediately trigger thyristor 66 to maintain continuous current flow therethrough and through lamp 48.
  • core 40 may be a permanent magnet and coil 36 may be made of magnetic material so that upon deflection of feeler 28 causing coil spring 36 to engage core 40, such engagement will be maintained as a result of the magnetic attraction between core and coil. Under this arrangement, once switch 36-40 is closed, it will remain closed until coil and core are physically separated after the defect has been corrected. Such magnetic relationship for switch 36-40 makes the use of a thyristor and of a reset switch unnecessary.
  • a knitting machine will normally be equipped with a plurality of detectors, all of which have circuitry identical to A and in parallel with each other. Accordingly, the engagement of the feeler in any one of the detectors will be effective to energize relay 74 and de-energize motor M. It will be appreciated, from FIG. 4, that a minimal amount of curlet us further assume that a relay having a resistance of 120 ohms is chosen. Under this arrangement, if one lamp is lit, then the 12 volts will be distributed relatively evenly between relay and lamp, providing sufficient current for lighting the lamp and activating the relay.
  • diode means 75 across relay 74.
  • diode means 75 One of the characteristics of diodes such as diode means 75 is that regardless of the amount of current passing therethrough, the voltage thereacross remains substantially constant. Accordingly, the amount of current passing through relay 74 remains relatively constant regardless of how many detectors are activated at any time. Thus, the selection of a sufficiently sensitive relay 74 can easily be made without regard to the amount of current drawn by the detectors since the current flow therethrough will always be substantially the sarne and of a magnitude which is nevertheless sufficient to energize the relay.
  • diodes 108 and 110 may be quite low (if for example only one detector was activated whose light 48 happens to be out whereby the current drawn is quite low because of the high resistance of resistor 68), or quite high in the event that a large number of detectors are activated simultaneously, the potential across diodes 108 and 110, i.e., across terminals 106 and 112 is relatively constant.
  • resistor 114 there is provided across terminals 106 and 112, resistor 114 and the grid circuit of transistor amplifier 116 so that whenever one or more detectors are activated, there will be current flow through the triggering circuit of transistor 116 which will render the latter conductive and provide a current path from ground to terminal 92, resistor 94, transistor 116, terminal 112, terminal 98 and the negative terminal of the power supply.
  • Such current flow in effect short circuits the grid circuit of transistor 96 to render the latter non-conducting and de-energize stop motion relay 100, which, in turn, interrupts the drive of motor M.
  • the power pack of FIG. 5 is thus seen to enable the use of a single power supply which simultaneously provides all the current that may be required for the detector lights while at the same time making provision for de-energizing the motor without posing any difficulties regarding the selection of the relay or any of the other components within the circuit.
  • FIG. 6 Another embodiment of a power pack is shown in FIG. 6 wherein there are shown detector circuits A, A, A, identical to those illustrated in FIG. 5. Arranged in symmetry with circuits A, A and A are detector circuits B, B and B. Circuit B is identical in all respects to circuit A with the sole exception that lead wires 62b, 62b and 62b are grounded, with current flow through detector circuit B being from terminal 118 to ground.
  • AC power supply 120 defines with diode 122 and condenser 124 a DC supply between terminal 126 and terminal 128. Terminal 126 is grounded so that the potential at terminal 128 is negative with respect to ground. Similarly, AC supply 120 defines with diode 130 and condenser 132 another DC supply between terminals 126 and 134, the latter being positive with respect to ground.
  • the operation of the circuitry in FIG. 6 is as follows. When the knitting machine is operating normally with all the faulty needle detectors (A, A, A and B, B, B" being unactivated, there is current flow from positive terminal 134, through terminal 136, through the grid circuit of transistor amplifier 96b, resistor 94, grid circuit of transistor 96a, terminal 138 and negative terminal 128. Such current flow renders transistors 96b and 96a conductive to provide current flow through relay 100 which in turn retains switch 102 in closed condition to maintain motor M normally energized.
  • the power pack of FIG. 6 provides with a single power supply all the requisite current for lighting the lights in each and every detecting device which has been activated, while at the same time providing the requisite power for controllingthe stop motion relay.
  • the power pack of FIG. 6' is symmetrical and electrically redundant. Accordingly, it' is substantially a fail safe system so that if anything 8 s wrong, either because of the activation of any of the detectors or because of the unintentional disconnection of any of the components, the stop motion relay will be efiective to stop the machine and prevent damage thereto.
  • detector circuit B has been shown as being a defective latch needle detector, since the switch defined by 36b-40b is closed in response to the deflection of a feeler similar to feeler 28, the power pack circuitry in FIG. 6 is equally compatible with any other detectors in the knitting machine which when activated are intended to stop the energization of the motor and light a lamp on the detector.
  • a conventional knitting machine is provided with detecting devices which detect broken yarn or yarn under tension in excess of a predetermined value such as shown in U.S. Pat. No. 3,257,518 assigned to the assignee hereof.
  • Such yarn fault detectors include a switch which is closed in response to the detection of the yarn defect and a light which is intended to be simultaneously lit. Accordingly, any such detectors can be powered by the same power pack as described in FIG. 6 either among detectorsA or detectors B, as well as by the power pack disclosed in FIG. 5.
  • Means for detecting a defective latch needle condition in a knitting machine having a rotary needle cylinder carrying a plurality of latch needles comprismg a. a feeler adapted to be mounted in the path of movement of said needles so as to be displaced by a latch needle in said defective condition,
  • said feeler being insulatingly carried by a flexible member whereby displacement of said feeler by a latch needle in defective condition causes flexing of said flexible member
  • a core mounted in insulated normally spaced relation with said flexible member and adapted to be electrically contacted thereby upon flexing of said flexible member in response to displacement of said feeler
  • said core and flexible member cooperating to define a normally open electrical switch which is closed in response to displacement of said feeler by a closed latch
  • electrical control means electrically connected to said switch and operative, in response to the closing of said switch, to de-energize the drive means for said knitting machine.
  • said electrical control means comprise a. a gate controlled electronic device having the gate circuit thereof in series with said switch, said device and switch being supplied by a power source whereby the closing of said switch provides current flow through said gate circuit thereby rendering said device conductive, and
  • said electrical control means comprise a. a gate controlled electronic device having the gate circuit thereof in series with said switch, said electronic device and switch being supplied by a power source whereby the closing of said switch provides current flow through said gate circuit thereby rendering said electronic device conductive, and
  • Means for detecting a defective latch needle condition in a knitting machine having a rotary needle cylinder carrying a plurality of latch needles comprisa. a tubular housing,
  • a core mounted in insulated normally spaced relation within said coil and adapted to be electrically contacted thereby upon flexing of said coil in response to displacement of said feeler
  • said core and coil cooperating to define a normally open electrical switch which is closed in response to displacement of said feeler by a closed latch
  • a lamp carried in said housing adjacent the other end thereof, and
  • electrical control means electrically connected to said switch and operative, in response to the closing of said switch, to de-energize drive means for said knitting machine and to energize said lamp.
  • said electrical control means comprise a. a gate controlled electronic device having the gate circuit thereof in series with said switch, said electronic device and switch being supplied by a power source whereby the closing of said switch provides current flow through said gate circuit thereby rendering said electronic device conductive, and
  • said electrical control means comprise a. a gate controlled electronic device having the gate circuit thereof in series with said switch, said electronic device and switch being supplied by a power source whereby the closing of said switch provides current flow through said gate circuit thereby rendering said electronic device conductive, and
  • Means for detecting a defective latch needle condition in a knitting machine having a rotary needle cylinder carrying a plurality of latch needles comprismg a. a tubular housing,
  • a core mounted in insulated normally spaced relation within said coil and adapted to be electrically contacted thereby upon flexing of said coil in response to displacement of said feeler
  • said core and coil cooperating to define a normally open electrical switch which is closed in response to displacement of said feeler by a closed latch
  • said housing defining a compartment therein intermediate said ends thereof, and electrical control means disposed in said compartment and connected to said switch and said lamp, said electrical control means being operative, in response to the closing of said switch, to de-energize the drive means for said knitting machine and to energize said lamp.
  • said electrical control means comprise a. a gate controlled electronic device having the gate circuit thereof in series with said switch, said electronic device and switch being supplied by a power source whereby the closing of said switch provides current flow through said gate circuit thereby rendering said electronic device conductive, and
  • said cooperating means comprise a reset ring secured to the rim of the lens, an end ring secured to said housing, and a spring acting against said lens and urging said reset ring into' engagement with said end ring.
  • said electrical control means comprise a. a gate controlled electronic device having the gate circuit thereof in series with said switch, said electronic device and switch being supplied by a power source whereby the closing of said switch provides current flow through said gate circuit thereby rendering said electronic device conductive, and
  • a control network for a knitting machine provided with a plurality of fault detecting circuits in electrical parallel relation to each other, with each circuit including a switch closed upon the detection of a fault and a lamp shunted by a resistance, comprising a. a power source connected to said parallel circuits and providing current flow to any of said circuits in response to the closing of the associated switch, thereby energizing the associated lamp,
  • diode means interposed between said power source and said parallel circuits whereby the current flow therethrough is equal to the sum of current flow through said fault detecting circuits, said diode means providing a substantially constant voltage drop thereacross independent of the amount of current flow therethrough, and
  • electrical means shunting said diode means, said shunting means receiving substantially constant current flow independently of the current flow through said diode means,
  • said shunting means being operative, when energized by the current flow therethrough, to cause de-energization of the drive means for said knitting machine.
  • said electrical shunting means comprise the grid circuit of a first electronic amplifier, whereby current flow therethrough renders said first electronic amplifier conductive, and wherein there is further provided a. a normally conductive second electronic amplifier electrically related to said first electronic amplifier so that said second electronic amplifier becomes non-conductive when said first electronic amplifier is conductive,
  • a relay in series with said second electronic amplifier and energized when said second electronic amplifier is conductive, said relay being operative, when de-energized, to interrupt the energization of the drive means for the knitting machine,
  • Means for detecting a defective latch needle condition in a knitting machine having a rotary needle cylinder carrying a plurality of latch needles comprismg a. a-feeler. adapted to be mounted in the path of movement of said needles so as to be displaced by a latch needlein said defective condition,
  • said feeler being insulatingly carried by a flexible member whereby displacement of said feeler by a latch needle in defective condition causes flexing of said flexible member
  • said core and flexible member cooperating to define a normally open electrical switch which is closed in response to displacement of said feeler by a closed latch
  • a power source connected to said fault detecting circuit and providing current flow therethrough in response to the closing of said switch, thereby energizing said lamp
  • diode means interposed between said power source and said fault detecting circuit, said diode means providing a substantially constant voltage drop thereacross independent of the amount of current flow therethrough, and
  • electrical means shunting said diode means, said shunting means receiving substantially constant current flow independently of the current flow through said diode means,
  • said shunting means being operative, when energized by the current flow therethrough, to cause de-energization of the drive means for said knitting machine.
  • saidelectrical shunting means comprise a relay which, when energized, causes de-energization of the drive means for the knitting machine.
  • said electrical shunting means comprise the grid circuit of a first electronic amplifier, whereby current flow therethrough renders said first electronic amplifier conductive, and wherein there is further provided a. a normally conductive second electronic amplifier electrically related to said first electronic amplifier so that said second electronic amplifier becomes non-conductive when said first electronic amplifier is conductive,
  • a relay in series with said second electronic amplifier and energized when said second electronic amplifier is conductive, said relay being operative, when de-energized, to interrupt the energization of the drive means for the knitting machine,
  • a control network for a knitting machine provided with two sets of fault detecting circuits, each of which sets comprises a plurality of fault detecting circuits in parallel relation to each other, with each circuit including a switch closed upon the detection of a fault and a lamp shunted by a resistance, comprising a. a power source connected to said sets and providing current flow to any of said circuits in response to the closing of the associated switch, thereby energizing the associated lamp, b. first diode means interposed between said power sourceand the first of said sets whereby the current flow therethrough is equal to the sum of current flow through the fault detecting circuits in said first set, said first diode means providing a substantially constant voltage drop thereacross independent of the amount of current flow therethrough,
  • second diode means interposed between said power source and the 'second of said sets whereby the current flow therethrough is equal to the sum of current flow through the fault detecting circuits in said second set, said second diode means providing a substantially constant voltage drop thereacross independent of the amount of current flow therethrough,
  • first and second electrical means shunting, respectively, said first and second diode means, said shunting means receiving substantially constant current flow independently of the current flow through the associated diode means
  • each of said shunting means being operative, when energized by the current flow therethrough, to cause de-energization of the drive means for said knitting machine.
  • a control network comprising said first electrical shunting means comprise the grid circuit of a first electronic amplifier, whereby current flow therethrough renders said first electronic amplifier conductive and wherein said second electrical shunting means comprise the grid circuit of a second electronic amplifier, whereby current flow therethrough renders said second electronic amplifier conductive, and wherein there is further provided a. a normally conductive third electronic amplifier electrically related to said first electronic amplifier so that said third electronic amplifier becomes non-conductive when said first electronic amplifier is conductive,
  • a normally conductive fourth electronic amplifier electrically related to said second electronic amplifier so that said fourth electronic amplifier becomes non-conductive when said second electronic amplifier is conductive
  • a relay in series with said second and fourth electronic amplifiers whereby it is energized only when both said second and fourth electronic amplifiers are conductive, said relay being operative, when de-energized, to interrupt the energization of the drive means for the knitting machine.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Binders And Loading Units For Sheaves (AREA)
US124321A 1971-03-15 1971-03-15 Defective latch needle detector and control network therefor Expired - Lifetime US3690127A (en)

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DE (2) DE2166370A1 (es)
ES (2) ES393248A1 (es)
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3906752A (en) * 1974-03-07 1975-09-23 Peter C Eichhorst Latch detector stop motion system for circular knitting machines
US3910074A (en) * 1973-05-16 1975-10-07 Edward I Parker Damaged needle detection apparatus
US3987649A (en) * 1973-05-16 1976-10-26 Parker Edward I Damaged needle detector with single needle sensor
US4033149A (en) * 1976-07-26 1977-07-05 The Raymond Lee Organization, Inc. Latch closer in combination with a closed latch detector
US4270369A (en) * 1980-01-22 1981-06-02 Mayer, Rothkopf Industries, Inc. Device for detecting broken heads of knitting machine needles
US4366681A (en) * 1978-05-31 1983-01-04 Meiners Electronic Controls Ltd. Detection of flaws, breakages, discontinuities and the like
CN103603133A (zh) * 2013-11-29 2014-02-26 杭州嘉拓科技有限公司 织针件的检测装置、织机及织针件的检测方法
CN105155125A (zh) * 2015-08-17 2015-12-16 吴江市华运纺织品有限公司 一种大提花针织机用舌针
CN108589019A (zh) * 2018-05-30 2018-09-28 江苏润山精密机械科技有限公司 一种用于织机的探针固定结构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991007532A1 (en) * 1989-11-14 1991-05-30 Nauchno-Proizvodstvennoe Obiedinenie 'vsesojuzny Nauchno-Issledovatelsky Institut Trikotazhnoi Promyshlennosti' (Npo Vniitp) Needle counter

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US481726A (en) * 1892-08-30 Veeder s
GB191316349A (en) * 1913-07-16 1914-06-04 Godfrey Stibbe Improvements in or relating to Electrical Stop Motions for Knitting Machines.
US2481632A (en) * 1948-10-22 1949-09-13 Stop Motion Devices Corp Retractable electric needle protector for knitting machines
GB703846A (en) * 1950-10-02 1954-02-10 Mellor Bromley & Co Ltd Improvements in or relating to stop motions for knitting machines
US2948076A (en) * 1958-03-27 1960-08-09 Fred A Patricello Fish strike signal
US3323333A (en) * 1965-04-22 1967-06-06 Stop Motion Devices Corp Double throw needle protector
US3390548A (en) * 1962-11-20 1968-07-02 Gen Time Corp Driving arrangement for knitting machines or the like
DE1927982A1 (de) * 1968-06-26 1970-01-02 Elitex Zd Y Textilniho Strojir Vorrichtung zur UEberwachung von Nadeln und nicht abgeschnittenen Faeden an Strickmaschinen
US3509739A (en) * 1967-03-25 1970-05-05 Morat Gmbh Franz Stop motion for a knitting machine
US3602727A (en) * 1969-12-02 1971-08-31 Booth Co Benjamin Stop motion system for strand-handling machine

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Publication number Priority date Publication date Assignee Title
US481726A (en) * 1892-08-30 Veeder s
GB191316349A (en) * 1913-07-16 1914-06-04 Godfrey Stibbe Improvements in or relating to Electrical Stop Motions for Knitting Machines.
US2481632A (en) * 1948-10-22 1949-09-13 Stop Motion Devices Corp Retractable electric needle protector for knitting machines
GB703846A (en) * 1950-10-02 1954-02-10 Mellor Bromley & Co Ltd Improvements in or relating to stop motions for knitting machines
US2948076A (en) * 1958-03-27 1960-08-09 Fred A Patricello Fish strike signal
US3390548A (en) * 1962-11-20 1968-07-02 Gen Time Corp Driving arrangement for knitting machines or the like
US3323333A (en) * 1965-04-22 1967-06-06 Stop Motion Devices Corp Double throw needle protector
US3509739A (en) * 1967-03-25 1970-05-05 Morat Gmbh Franz Stop motion for a knitting machine
DE1927982A1 (de) * 1968-06-26 1970-01-02 Elitex Zd Y Textilniho Strojir Vorrichtung zur UEberwachung von Nadeln und nicht abgeschnittenen Faeden an Strickmaschinen
US3602727A (en) * 1969-12-02 1971-08-31 Booth Co Benjamin Stop motion system for strand-handling machine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3910074A (en) * 1973-05-16 1975-10-07 Edward I Parker Damaged needle detection apparatus
US3987649A (en) * 1973-05-16 1976-10-26 Parker Edward I Damaged needle detector with single needle sensor
US3906752A (en) * 1974-03-07 1975-09-23 Peter C Eichhorst Latch detector stop motion system for circular knitting machines
US4033149A (en) * 1976-07-26 1977-07-05 The Raymond Lee Organization, Inc. Latch closer in combination with a closed latch detector
US4366681A (en) * 1978-05-31 1983-01-04 Meiners Electronic Controls Ltd. Detection of flaws, breakages, discontinuities and the like
US4270369A (en) * 1980-01-22 1981-06-02 Mayer, Rothkopf Industries, Inc. Device for detecting broken heads of knitting machine needles
CN103603133A (zh) * 2013-11-29 2014-02-26 杭州嘉拓科技有限公司 织针件的检测装置、织机及织针件的检测方法
CN105155125A (zh) * 2015-08-17 2015-12-16 吴江市华运纺织品有限公司 一种大提花针织机用舌针
CN108589019A (zh) * 2018-05-30 2018-09-28 江苏润山精密机械科技有限公司 一种用于织机的探针固定结构

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GB1337138A (en) 1973-11-14
FR2129316A5 (es) 1972-10-27
GB1337139A (en) 1973-11-14
DE2166370A1 (de) 1973-10-25
ES393248A1 (es) 1974-06-16
DE2158423A1 (de) 1972-09-28
ES396906A1 (es) 1975-11-01

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