US3831005A - Textile machine - Google Patents

Textile machine Download PDF

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Publication number
US3831005A
US3831005A US00230906A US23090672A US3831005A US 3831005 A US3831005 A US 3831005A US 00230906 A US00230906 A US 00230906A US 23090672 A US23090672 A US 23090672A US 3831005 A US3831005 A US 3831005A
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United States
Prior art keywords
textile machine
textile
control system
storage means
couplings
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Expired - Lifetime
Application number
US00230906A
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English (en)
Inventor
G Martens
H Schippers
K Frolich
K Bauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oerlikon Barmag AG
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Barmag Barmer Maschinenfabrik AG
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/12—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using record carriers
    • G05B19/14—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using record carriers using punched cards or tapes
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/14—Details
    • D01H1/20—Driving or stopping arrangements
    • D01H1/32—Driving or stopping arrangements for complete machines
    • D01H1/34—Driving or stopping arrangements for complete machines with two or more speeds; with variable-speed arrangements, e.g. variation of machine speed according to growing bobbin diameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/08—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using plugboards, cross-bar distributors, matrix switches, or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2708/00—Control devices for speed-changing geared mechanisms, e.g. specially adapted couplings for synchronising devices, devices to simplify control, control of auxiliary gearboxes
    • F16H2708/02—Control devices for speed-changing geared mechanisms, e.g. specially adapted couplings for synchronising devices, devices to simplify control, control of auxiliary gearboxes only the toothed wheels remain engaged
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S242/00—Winding, tensioning, or guiding
    • Y10S242/01—Tape program control means

Definitions

  • ABSTRACT A textile machine with switchable multistage gearing for the adjustment of the turning speed ratio between rotating parts of the textile machine, such as drives, spindles, delivery members, stretching members, and the like, having a control system for switching the respective couplings of the multistage gearing upon a command from a decimal feed-in means having the capability of storing the desired fed in turning speed ratio.
  • the decimal input is converted into a binary coded signal independent of time and compared in a comparison stage with pre-programmed signals representative of settable turning speed ratios.
  • the twist or false twist applied to a thread or a yarn is dependent on the speed ratio between the spindle bringing about the twisting of the yarn or assemblies of similar type used for the purpose and the rolls, roller, godets and the like which determine the running speed of the thread.
  • Another object is to provide a textile machine with multistage gearing with a control system in which only the desired textile-technical value (stretch, twist) of the thread or yarn or the appropriate speed ratio of the multistage gears has to be set and in which thereupon the appropriate combination of couplings of the multistage gearing is set in automatically.
  • the invention provides a control system outside the machine for the bringing about of coupling switch commands, which contains storage arrangements for the storage of the couplings switch commands, and suitable connecting arrangements, over which it is possible to connect the textile machine with the control system simultaneously or sequentially with a number of similar textile machines for a brief time or continuously.
  • control system can take place from a central place of the machine room or plant simultaneously or in alternating sequence with several similar textile machines.
  • the connection between the control system and the textile machine can be established by electrical means and, namely, over cables, group and individual switches, relays, throw switches and the like.
  • the textile machine has a control system which is movable. The connection of the control system with the textile machine is then accomplished by cable connectors.
  • control sys tem has an input system constructed preferably as a keyboard, over which it is possible to feed into the storage arrangements the coupling switch commands required for the setting of a certain turning speed ratio.
  • storage arrangements there can be used bistable switches, relays, transistors and the like.
  • bistable switches, relays, transistors and the like bistable switches, relays, transistors and the like.
  • a textile machine with such a control system is technically simple and cheap. It has the advantage that for a certain program-a specialized machine operation has to take place only once and at a central point. The process already described for the determination of a prescribed combination of coupling switch commands from a prescribed textile-technical property (stretch, twist) of the program cannot, however, be preserved with such a textile machine.
  • control system contains an input and scan ning arrangement for the manual input of punch cards on which there are visually readable markings for each turning speed ratio signal or commard segment which bring about a corresponding combination of coupling switch commands.
  • control system contains an endlessly circulating data carrier positionable and advanceable by hand, on which there are provided for the usually read able markings of speed ratios corresponding markings for the bringing about of coupling switch commands.
  • the punch cards or endlessly circulating data carriers can also have visually readable markings of textiletechnical properties (twist, stretch).
  • textiletechnical properties such as textiletechnical properties
  • the conveyor arrangement of the data carrier may snap in automatically over an uninterrupted row of prismatic depressions and a prong engaging in these depressions by a pressure spring to change the selected position of a nonadjustable speed ratio into the position of an adjacent, switchable turning speed ratio.
  • endlessly circulating data carriers punch hole strips, magnetic tapes, rotatable cylinders or disks and the like may be used.
  • the control arrangement contains an endlessly circulating data carrier with scanning devices on which to machine-readable markings of the turning speed ratios are allocated to corresponding turning speed ratios switchable by means of the multistage gear for the bringing about of coupling switch commands.
  • data carriers there again come in consideration endless punch strips, magnetic tapes, rotating cylinders or disks.
  • the switchable turning speed ratios the corresponding values of textile-technical properties (twist, stretch) can be stored on the data carrier.
  • control system has expediently an input device, for example, a ten-digit keyboard and a coding switch with storer, over which the desired turning speed ratio is supplied and converted into binary signals independent of time.
  • input device for example, a ten-digit keyboard and a coding switch with storer
  • the scanning device and the input device or coding circuit with storer likewise may be connected with digital comparison stages, in themselves known, over which the allocated input turning speed ratio to the markings of a switchable identical or adjacent turning speed ratio and an output signal is producible for the take-over of corresponding coupling switch commands from the data carrier.
  • digital comparison stages in themselves known, over which the allocated input turning speed ratio to the markings of a switchable identical or adjacent turning speed ratio and an output signal is producible for the take-over of corresponding coupling switch commands from the data carrier.
  • the corresponding values of the textile-technical properties (twist, stretch) there can be used the corresponding values of the textile-technical properties (twist, stretch).
  • the markings of the data carrier for the switching of the couplings situated on a shaft can be arranged in such a way that they form the binary coding of a continuous series of numbers. Through this type of coding, the couplings situated on a shaft cannot be activated simultaneously.
  • the textile machine is characterized in that the data carrier is a punch card insertable by hand. For each machine there is a card file of punch cards. The selection of a certain punch card is made by hand on the basis of the reading from a visually readable marking of the value of a certain speed ratio or of a corresponding textile technical property (stretch, twist).
  • the data carrier can be the aforesaid data carriers circulating endlessly, advanceable and positionable by hand, on which the speed ratios switchable by means of the multistage gear are arranged, allocated visually readable, and assigned to markings for the bringing about of the corresponding combination of coupling switch commands.
  • the switchable speed ratio or to which adjustable textile technical property (twist, stretch) the desired value is to be allocated. In this decision as a rule the slightest error arising can be decisive.
  • the conveying system of the data carrier snap in place automatically over the aforedescribed continuous row of prismatic depressions and a prong pressed by a pressure spring and engaged therein to change an unsettable translation ratio automatically into the position of an adjoining, switchable translation ratio.
  • the data carrier is a constantly circulating endless data carrier, preferably a centrally located steadily rotating punch disk.
  • an input device, known per se, for decimal numbers is provided for the input of desired speed ratios and a coding circuit, known per se, connected at its output side.
  • the latter is provided with storers for the conversion of decimal numbers into binary coded signals independent of time. Over such arrangements fed-in values of a turning speed ratio can be allocated to the identical values stored on the data carrier and through this allocation there can be brought about the take-over of coupling switch commands from the data carrier.
  • the adjustable turning speed ratios and the appertaining combinations of coupling switch commands be stored alternately and in the numerical sequence of the turning speed ratios in a column each arranged perpendicular to the direction of movement of the data carrier.
  • a scanning device steadily scanning the data carrier.
  • markings allocated to each column of the data carrier for the triggering of counting pulses as well as a bistable flip-flop stage operated by these.
  • the latter on the one hand, is connected with the beat input of the digital comparison stages and, on the other hand, in common with its output, over an AND-gate, with a switch-through device for the taking over of coupling switch commands from the data carrier.
  • one or more adjoining columns of the data carrier have markings which indicate the beginning of a revolution (circulation) of the data carrier.
  • the zero input of the bistable flip-flop stage is connected with the reading device in such a way that the bistable flip-flop stage is brought into zero position by the pulses coming from these markings.
  • the data carrier has in one column only positive markings and in the adjoining column only negative markings. By scanning these markings it is possible not only to bring about the zero setting of the flip-flop stage, but simultaneously to ascer- 'tain the complete capability of the scanning system for functioning. It is also true here, as in other embodiments, that instead of the speed ratios the corresponding value in each case of a textile-technical property can be marked on the data carrier or set in by means of the feed-in device.
  • FIG. 1 is a schematic representation of a textile machine and the control system allocated to it;
  • FIGS. 2 to 5 illustrate embodiments of the control system for the textile machine
  • FIG. 6 is a schematic view of a multistage gear switchable by means of couplings
  • FIG. 7 is a schematic representation of the storage of coupling switch commands on a data carrier.
  • FIG. 8 illustrates circuitry and data carrier details for the control system of the textile machine.
  • the textile machine 1 is connected by an electric cable or other electrical connection 3 with a control system 2.
  • the connection 3 is established by means of plugs 28.
  • a branch-off electrical connection 3' may connect one or more other textile machines to the control system 2.
  • the textile machine 3 contains a multistage gear 29 by which, by means of the electro-mechanical couplings Kl to KS, 18 different turning speed ratios can be switched between the rotating drive and driven shafts 30' and 30 rotating at n rpm and n1 through n18 rpm, respectively.
  • the electric circuit diagram of the control system 2 has a keyboard with keys E1 to E8.
  • Each of the keys E1 to E8 is allocated to a coupling K1 to K8.
  • the relay R3 engages and closes a switch as well as the self-holding circuit SS3.
  • the lockings V3,5 and V3,4 are opened, so that the couplings K4 and K5, which are seated on a shaft with the coupling K3, cannot be operated.
  • the auxiliary relay HR3 in the textile machine is operated. This closes the auxiliary switch H53 and thereby thecurrent circuit in which the coupling relay KR3 is situated.
  • the coupling relay KR3 closes, for one thing, the textile machine self-holding circuit TS3 and, further, the circuit for the operation of the electromechanical couplings K3. Over the self-holding circuit TS3 the circuit for the coupling relay KR3 remains closed even if the connection 3 is uncoupled.
  • the coupling relay KR3 is deenergized and the coupling K3 is disengaged only if the key A of the textile machine is pressed or, by operation of the coupling relay KR4, KRS the locking switch V4,5 is released.
  • the control system 2 preferably is portable.
  • the keys E1 to E8 are operated in the coupling combination determined for the prescribed textile-technical property (such as, for example, twist, stretch) at a central point.
  • the control system can then be moved up by an assistant to each individual machine and connected briefly by means of a plug. Thereby the fed-in and stored combination of coupling switch commands is transferred into the textile machine.
  • FIG. 3 shows a control system 2 in which the storage of the coupling switch commands takes place by means of a punch card 4.
  • a range of turning speed ratios (240 to 260) and under this speed ratio (250) settable by means of the multistage gear, to which the 240-260 range is allocated.
  • the values of certain textile-technical properties such as, for example, twist or stretch.
  • the punch card is selected in whose range this desired value lies.
  • the engageable couplings Kl to K16 of a multistage gear In the row 17 of the punch card there are represented the engageable couplings Kl to K16 of a multistage gear.
  • the circuit plan of the textile machine 1 can correspond to the circuit plan illustrated in FIG. 2 of the textile machine 1, with the single distinction that the multistage gear of the textile machine represented in FIG. 3 contains twice the number of couplings.
  • the control system according to FIG. 4 shows an endless punch strip or band 5, which can be moved and positioned by hand by means of two rollers 7.1 and 7.2.
  • the punch strip contains in each column 19 a certain combination of machine-readable markings 9 (for example holes) for bringing about coupling switch commands. These markings are scanned in the scanning device 6.
  • output signals such as, for example, electrical voltages, are impressed upon various conductors and transferred over the connection 3 to one or more textile machines.
  • the circuit diagram of the textile machines can, again, correspond to the circuit diagram represented in FIG. 2.
  • the conveyor rollers 7.1 or 7.2 there are represented visually readable values 8 of textiletechnical properties (stretch, twist) or the corresponding speed ratios and preferably also a range of these values. With the aid of these values the data carrier is positioned. It is expedient to provide between the manual adjusting wheel in FIG. 4 and the actual conveyor roller 7.1 a translation gear to make possible a readily readable representation of the values 8 and a greater data density on the data carrier 5. Since by means of the multistage gear only certain values are settable, the conveyor system 7.1 has prismatic depressions 10 into which the prong 12 pressed by the spring 11 snaps in place.
  • the conveying device On adjustment of the conveyance distance 7.1 onto an unswitchable value, the conveying device moves under the force of the spring 11 and of the prong 12 into the position of an adjacent switchable value.
  • the depressions 10 are allocated to the columns 19 in such a way that there is always set the value lying closest to the desired value.
  • FIG. 5 shows a control system with a punch hole disk 13 as data carrier.
  • the punch disk is centrally borne rotatably and is steadily driven by a motor.
  • the punch disk contains in the column 13.4 the coded value of a textile-technical property or of the corresponding speed ratio and in column 13.5 a combination of markings for bringing about the corresponding coupling switch commands.
  • the following columns 13.6 and 13.7 contain alternately each a further value of a textile-technical property or of a speed ratio and the allocated combination of coupling switch commands.
  • the values of the textile-technical properties or speed ratios follow one another in turning direction in numerical sequence.
  • a column 13.2 contains only positive punch holes.
  • a further column 13.3 contains no punches.
  • the columns 13.2 and 13.3 serve to mark the beginning of a revolution of the punch disk 13.
  • the scanning device 6 is constantly in operation.
  • An input device 14 provides the supplying of the prescribed value of a certain textile-technical property (twist, stretch) or of the corresponding speed ratio. It is a ten-digit keyboard.
  • Engaged in series with the tendigit keyboard is a coding circuit, known per se, with storers 15, through which the fed-in values are transformed into binary coded signals independent of time. These signals serve to call off certain coupling switch commands from the circulating punch disk 13.
  • the signals of the coding circuit or storer 15 as well as the pulses emanating from the scanning device 6 are fed to digital comparators 17 (digital comparison stages).
  • Such digital comparison stages are arranged in such a way and in this example switched in such a way that an output signal 17.1 is brought about when the value fed in over the coding circuit or storer 15 is identical to or greater than the value fed in over the reading device 6.
  • the digital comparators are controlled by a clock or timing input from a bistable flip-flop stage 24 and thereby set in operation.
  • the bistable flip-flop stage on its part is driven by the counting pulses generated by means of the markings 13.1 and brought into zero position over its zero input 24.2 by means of pulses emanating from the columns 13.2 and 13.3.
  • the signals coming from the coding circuit with storers 15 or from the input device 14 can be transmitted directly to an indicating device, which is mounted on the control system or the textile machine and serves to make visible the fed-in value.
  • the multistage gearing of FIG. 6 is a switchable multistage gear by which on provision of a constant turning rate It through switching different combinations of couplings K10 to K although 18 different turning rates n l-l8 can be set in.
  • the switching of the couplings takes place, for example, electromagnetically.
  • the couplings situated on a shaft have to be locked with respect to one another mechanically or electrically, since the simultaneous switching on of two or more couplings situated on a shaft can cause damage to the couplings, gear wheels or other gear parts.
  • the coupling switch commands are coded in the manner shown in FIG. 7.
  • the column 17a there are presented the switchable couplings. There are 16 couplings under consideration in FIG. 6.
  • the couplings which are represented in a field thus, for example, the couplings Kl0/K20 or K30/K40/K50 are arranged on respective shafts.
  • column 9a to each of the couplings situated on one shaft there is allocated a binary number in progressive numerical sequence.
  • These binary numbers are stored on tracks 18a and columns 19'a of the data carrier 16a.
  • Each binary number needs for its representation on the data storer as many tracks as it has positions. This means that, for example, for the representation of the couplings K110, K120, K130, K only two tracks are required.
  • the data carrier 16 in FIG. 7 contains in the represented column 19a markings 9a, for example, holes, through which coupling switch commands are brought about.
  • the couplings are enumerated whose switching commands are stored in column l9a.
  • FIG. 8 shows the control system of the textile machine with a punch card insertable by hand. It should be mentioned that instead of the punch card there can be used also notched cards or cards with similar markings.
  • Each punch card 4 carries an imprint which desig' nates a certain value or value range of a textiletechnical property or of a corresponding turning speed ratio. This imprint serves for the hand selection of the punch card from a card file.
  • the row 8a there are represented the 16 switchable couplings of the multistage gear of the textile machine.
  • the couplings K20, K50, K70, K120, K130, K160 are switchable.
  • the auxiliary relays HR2, HRS, HR7, HR12, I-IR13, I-IR16 are actuated.
  • the corresponding combination of self-holding circuits (S1 to S16) as well as the reciprocal combination of locking switches (V1 to V16), being closed, respectively are opened.
  • the switched-in couplings do not unlock again until the switch A is operated.
  • the endless band or strip control system units of FIG. 4 may be used in lieu of the punch card 40 in the control system of FIGS. 6-8. Also, the punch disk control system may be substituted for the punch card control system of these same figures.
  • the advantage of the invention lies in that there are saved specialized and auxiliary personnel for the machine operation, the operation is simplified, the tending time shortened, a central operation made possible and the increased danger of false performances existing in the case of constant repetition of the same working steps is reduced.
  • the invention makes possible, further, an extensive automation of working processes which hitherto had to be carried out by calculations and manual adjustments.
  • the allocation of prescribed textile technical properties (twist, stretch) to the corresponding machine commandshere coupling switch commands-which comprises several working steps as well as the carrying out of these switching commands, is simplified and automated. The requirement in personnel skill as well as the error rate in the machine tending is lowered and the monitoring of the machine facilitated.
  • a textile machine for processing yarns or threads which comprises a drive shaft, at least one drive shaft coupled to said drive shaft by switchable multistage gearing composed of multiple drive gears capable of being coupled in various gear combinations for the adjustment of the rotation rate ratio between said drive and driven shafts, each driven shaft rotatably driving a plurality of respective spindles, delivery members, draw off members, stretching devices or the like mounted in common on each driven shaft, and an electronic control system for switching the respective couplings of the multistage gears, said system containing feed-in means for decimal numbers for the feeding in of desired rotation rate ratios and a coding circuit with storer means on the output side of the feed-in means for the conversion of decimal numbers into binarycoded signals independent of time, a storage means with scanning means, the storage means generating signals, corresponding to rotation rate ratios settable by means of the multistage gears for the bringing about of the gear combination desired in each case, of coupling switch commands allocated for the gear combination providing the appropriate rate of rotation of said driven shafts to attain the desired technical properties for the
  • said scanning means including means for steadily scanning said storage means.
  • a textile machine means in said storage means for the triggering of counting pulses as well as a bistable flip-flop stage operated by the pulses, the bistable flip-flop stage being connected with the operation input of the digital comparison stages and also in common with the output of the digital comparison stages via an AND-gate, and a switch-through means for the issuing of coupling switch commands from the storage means.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mathematical Physics (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Looms (AREA)
  • Control Of Velocity Or Acceleration (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US00230906A 1971-03-04 1972-03-01 Textile machine Expired - Lifetime US3831005A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19712110376 DE2110376A1 (de) 1971-03-04 1971-03-04 Textilmaschine
DE2110348A DE2110348C3 (de) 1971-03-04 1971-03-04 Textilmaschine mit einem schaltbaren Vielstufenrädergetriebe und mit einer maschinenexternen Steuereinrichtung

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US3831005A true US3831005A (en) 1974-08-20

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US00230906A Expired - Lifetime US3831005A (en) 1971-03-04 1972-03-01 Textile machine

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US (1) US3831005A (it)
BR (1) BR7201010D0 (it)
DD (1) DD95522A5 (it)
DE (2) DE2110376A1 (it)
ES (1) ES398543A1 (it)
FR (1) FR2162803A5 (it)
GB (2) GB1370200A (it)
IT (1) IT949739B (it)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3908347A (en) * 1973-02-20 1975-09-30 Heberlein Hispano Sa Process and apparatus for the control of spinning machines
US3986330A (en) * 1974-04-10 1976-10-19 Evolution Sa Method of and apparatus for twisting a yarn

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD248614B1 (de) * 1986-04-24 1988-07-20 Textima Veb K Vorrichtung zum steuern der liefergeschwindigkeit an vorspinnmaschinen
CN107575569B (zh) * 2017-10-31 2019-10-15 科世达（上海）管理有限公司 一种换挡装置及挡位编码的方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2948471A (en) * 1956-09-18 1960-08-09 Laboissiere Pierre Electro-magnetic counter
US3094609A (en) * 1959-03-16 1963-06-18 Daystrom Inc Control system for a digital computer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2948471A (en) * 1956-09-18 1960-08-09 Laboissiere Pierre Electro-magnetic counter
US3094609A (en) * 1959-03-16 1963-06-18 Daystrom Inc Control system for a digital computer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3908347A (en) * 1973-02-20 1975-09-30 Heberlein Hispano Sa Process and apparatus for the control of spinning machines
US3986330A (en) * 1974-04-10 1976-10-19 Evolution Sa Method of and apparatus for twisting a yarn

Also Published As

Publication number Publication date
DE2110376A1 (de) 1972-09-21
FR2162803A5 (it) 1973-07-20
BR7201010D0 (pt) 1973-06-12
DE2110348B2 (de) 1974-10-17
GB1370200A (en) 1974-10-16
DE2110348A1 (de) 1972-09-21
DE2110348C3 (de) 1975-07-17
DD95522A5 (it) 1973-02-05
GB1370199A (en) 1974-10-16
IT949739B (it) 1973-06-11
ES398543A1 (es) 1975-06-01

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