US3579265A - Method and apparatus for transmitting information - Google Patents

Method and apparatus for transmitting information Download PDF

Info

Publication number
US3579265A
US3579265A US728183A US3579265DA US3579265A US 3579265 A US3579265 A US 3579265A US 728183 A US728183 A US 728183A US 3579265D A US3579265D A US 3579265DA US 3579265 A US3579265 A US 3579265A
Authority
US
United States
Prior art keywords
signal
vehicle
transmitter
receiver
switches
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US728183A
Other languages
English (en)
Inventor
Jozsef Mandzsu
Erno Csaszar
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.)
FOK GYEM FINOMMECH ELEKT
FOK-GYEM FINOMMECHANIKAI ES ELEKTRONIKUS MUSZERGYARTO
Original Assignee
FOK GYEM FINOMMECH ELEKT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FOK GYEM FINOMMECH ELEKT filed Critical FOK GYEM FINOMMECH ELEKT
Application granted granted Critical
Publication of US3579265A publication Critical patent/US3579265A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/04—Indicating or recording train identities
    • B61L25/046—Indicating or recording train identities using magnetic tags

Definitions

  • the signal transmitter is coded according to the desired information, for example, the identifying number of the vehicle, by the selective positioning of a plurality of magnets within a matrix of positions, while the receiver is provided with a plurality of magnetically operated switches, for example, Reed-switches, one for each possible position of the magnet.
  • the transmitter is also provided with an additional gate magnet which is positioned so that it can cooperate with one of a pair of additional magnetic switches provided in the receiver depending on the direction of travel of the vehicle.
  • Actuation of either of these additional magnetic switches causes signals to be simultaneously emitted in parallel from each of the other magnetic switches closed in accordance with the transmitted coded signal.
  • the output signals from the closed magnetic switches are fed to a code converter which, depending on which one of the additional magnetic switches was actuated, provides a binary coded output signal which either represents the actual detected numerical value or its compliment.
  • the coded output signals are then either placed in an intermediate store and subsequently read or recorded, for example, by perforating a tape, or are directly recorded.
  • the invention relates to a method and an apparatus for transmitting information between trackbound vehicles and the track when the vehicle passes any given point of the track.
  • One of these purposes is that, in order to facilitate the registration of the individual vehicles as well as to speed up such r,egistrations at the control stations, the numerical definition of the vehicle be read, recorded and stored. If this operation is introduced at several places in the traffic net-inclusive of the international trafficit will be easy to evaluate the traffic of the individual vehicles on the basis of the recordings.
  • the vehicle numbers should consist of l2 digits
  • the faultless activity of the reading system should be secured within a speed range of to 160 km/h maximum;
  • the device should not interfere with the usual security and distant signalling installations or equipment;
  • the device should operate without fail under any lighting conditions, thus when exposed to direct sun light as well as in complete darkness;
  • the device should not interfere with the regulate operation of the vehicles, considering also the accessories of the vehicle and the car cover;
  • the device should work reliably between temperatures of 50 and +70 C., independent of the climatic conditions (snow, fog, humidity, vapor);
  • the storing of the read vehicle numbers is to be secured for up to lOO vehicle numbers.
  • a known device developed for the aforesaid task solves the problem by the discontinuous transmission of signals by means of radiation of radio isotopes.
  • This solution has, however, the drawback that the radio activity required per vehicle is of such high intensity that particular precautions must to be taken against radiation. In addition to the constant danger of radiation, this method also involves considerably costs.
  • Electromagnetic transmitter and receiver devices operation on the basis of static magnetic induction have also been developed.
  • oscillatory circuits which are tuned to corresponding resonance frequencies, are arranged on the vehicle and a heavy-duty transmission generator is provided at a given point of the railway track.
  • the resonant oscillatory circuit absorbs energy from the transmitter and this energy is transformed by a complicated current circuit arrangement in the receiver into an impulse and the signals thus obtained are processed further on for the purposes of informations.
  • this device meets the international proposals, it requires investments of such magnitude that its use is disadvantageous.
  • the task of the present invention is to eliminate the drawbacks of the aforesaid solutions and to create a much more inexpensive device, in particular such a one which meets the international proposals in every respect as well as one which is more simple and of safe operation.
  • the invention relates thus to a process and a device for transmitting information between track-bound vehicles and the track when the vehicle passes a given point of the track and for processing the information, for example, for the identification of the vehicle number, wherein a magnetic signal receiver arranged in the track, or on the vehicle, is actuated by the magnetic field of a permanent magnet, forming a signal transmitter, coded in a desired way and arranged on the vehicle or in the track, and wherein the signals obtained are processed.
  • the set task is solved according to the invention in that the signals of the signal transmitter are simultaneously transmitted by Reed-switches sending a selective, constant standard signal independent of the speed and travel direction of the vehicle, which Reed-switches are actuated by functional gates according to the position of the vehicle, wherein by the actuation of the gates the information corresponding to the two possible positions of the vehicle is coded in the one position in the original sequence of the digit and numerical values of the information, and in the other position of the vehicle is coded in reverse sequence, parallel to a selected code, or the information is entered into the storing elements of an intermediary storage unit and the signals are read, fixed or shown, respectively, by a sequential reading unit, for example by a ring counter, or the signals are fixed directly after coding by means of a tape punching apparatus.
  • the device serving to carry out the process according to the invention has a magnetic signal transmitter coded by the position of permanent magnets, a code converter interconnected with the signal generator, a signal storage unit as well as a signal fixing and/or signal showing unit.
  • the substance of the apparatus according to the invention is that a gate magnet is associated with the permanent magnets of the signal transmitter which controls a functional or logical gate in the receiver to simultaneously actuate a plurality of Reedswitches in the receiver to read and the transmitted information; that in the signal receiver, on the one hand a plurality of Reed-switches equal in number to all of the possible positions of the permanent magnets in the signal transmitter are provided and arranged such that they can be actuated by the permanent magnets, while on the other hand, additional Reedswitches are provided which cooperate with the with the position of the vehicle relative to the signal receiver and thus the particular Reed-switch actuated by the gate magnet, forms a coded output signal, in any desired code, which is either a direct representation or a reverse representation as regards both digit
  • the device according to the invention for the identification of the vehicle number may be of such a design that the signal transmitter is provided on the undercarriage of the vehicle inside the vehicle profile and that the signal receiver is provided on a selected point of the railway track between the track lines of the vehicle wheels.
  • the permanent magnets contained by the signal transmitter are arranged according to a code known per se.
  • the device according to the invention fitted with a coding apparatus operating with diodes may also be designed in such a manner that to the outputs of the coding unit there is coordinated on the one hand an output coding with a diode or coding just by the absence of a diode, and producing a S-unit code known per se, and on the other hand there is also another output coordinated which produces the complementary S-unit code of the code.
  • the device according to the invention may be of such a design that either a tape punching apparatus or an electronic signal storage unit known per se, for example an electronic computer is connected to the output of the intermediary signal storage unit.
  • the device according to the invention may be designed further in such a manner that the signal showing and/or signal fixing unit is provided with inlets connected to the outlets of a unit identifying the point of track and the point of time.
  • a great advantage of the device according to the invention lies in that it meets all conditions of the international proposals and is unique in this respect.
  • the simplicity of the construction offers a high operational safety and the maintenance requires small effort only.
  • FIG. I shows the block diagram of the units of the device according to the invention, in schematic representation
  • FIG. 2a shows, by way of example, a coded vehicle number, stating the digit values of the numerals
  • FIG. 2b illustrates, from among the two possible positions which the vehicle may take up on the track, one position of the plane of the magnetic transmitting unit together with the permanent magnet arranged in said plane according to the code corresponding to the vehicle number in FIG. 2a
  • FIG. 2c shows the vehicle number that can be seen in FIG. 2a, in the other possible vehicle position coded by coding permanent magnets;
  • FIG. 2d shows the vehicle number read according to the code of FIG. 20, said number being reconverted in the coding unit connected to the signal receiver into the original number;
  • FIG. 3 shows the switch field arranged in the plane of the signal receiver, together with the corresponding designation of the columns and rows of the individual switches;
  • FIG. 4a shows, from among the matrices of the coding unit, matrix panel XII of the vehicle number XII corresponding to the highest digit value, whereas;
  • FIG. 4b similar to FIG. 4a, shows the matrix I'. corresponding to the lowest vehicle number value I.
  • FIG. 5 is the schematic representation of the circuit'of the signal processing unit.
  • FIG. I shows the device according to the invention in a block diagram.
  • Signal transmitter B is fastened to the supporting structure of vehicle A within the profile'lines at the undercarriage of the vehicle in the section between the two rails. It comprises a signal transmitter consisting of permanent magnets in which signal transmitter the permanent magnets are arranged in code according to the 12 digits of the vehicle number at a ratio to a gate magnet of a 1011 code.
  • the signal receiver C which comprises a switch field of Reed-switches which are actuated by the fields of the magnets of the signal transmitter B.
  • the signal transmitter B moves also through signal receiver C in a parallel plane and simultaneously actuates in a certain position those magnet switches 20 (FIG. 3) which are arranged in the switch field of the signal receiver and which are just congruent to digit magnets 60 (FIGS. 2a and 2c in signal transmitter B.
  • the signal receiver C allows the information obtained in this manner to reach the code unit E. From this latter unit, the signals after code conversion, are fed to signal storing unit F, and from there to the signal fixing unit L, where a tape punching apparatus serves to record the information characterizing the vehicle number and the information coming from a coding unit I actuated by a clock generator K identifying the point of time and the point of track. In this manner the information corresponding to all 12 digits of the numbers of vehicle A is stored by signal storing unit F and fixed by signal fixing unit L. This process takes place on a tape or on cards corresponding to the CCITT proposals known from teletype techniques and used also with railways according to the ABC 5-uhit code.
  • the information fixed on the punched tape is transmitted by means of Telex transmitter G in the form of signals corresponding to the perforation, to the central electronic computer H, where the processing of the data takes place.
  • the device is fed with current from feeding source D.
  • FIG. 2a shows car number 246, 307, 591, 853, used by way of example.
  • the digit values of the number were denoted by Roman numerals in such a manner that the first digit of on the left side is coordinated with the digit value XII as the highest digit value, and the last digit on the right side is coordinated with I as the lowest digit value.
  • FIG. 2b shows the signal transmitter B including a plurality of pennanent magnets 60, coded according to the vehicle number taken by way of example in FIG. 2a, arranged in rows and columns.
  • the rows I-XII correspond to the digital values of the numeral
  • columns 30l3l0 designate the absolute values of the numerals coordinated with the digit values arranged in rows I-XII.
  • the gate magnet 50 In the row XIII and the coordinated column 300 is the gate magnet 50. At the distances in relation to gate magnet 50 all digit magnets 60 of signal transmitter B are shown coded according to the code of 10:1.
  • the vehicle A may travel in travelling direction 70 either forward or backward.
  • Numeral 2 which according to FIG.
  • the axes forming the north-south direction of the digit magnet are vertical to the plane of signal transmitter B.
  • the signal transmitter B arranged on vehicle A may show in relation to signal receiver C also a position turned by I
  • the actuation taking place in this position will be described hereinafter in detail in the course of disclosing the actuation of the device.
  • the signal receiver C is arranged between the rails.
  • the switch field comprising-as stated before-Reed-relays, has rows I'-XII' and columns 30I'3l0, these columns corresponding to the absolute values of the vehicle numbers in such a manner that for example in FIG. 2a the digit 2 coordinated with digit value XII on the left side corresponds in switch field of FIG. 3 to magnet switch 20' in the intersection of vehicle number digit value row XII and of column 303.
  • column 311 of vehicle number digit value row XIII there is arranged a Reed-switch K
  • column 300' of vehicle number digit value row XIV there is a Reed-switch K
  • Each of these Reed-swithces K and K actuates a gating stage.
  • Reed-switches K, and K achieves congruence during travel, in both possible vehicle or actuations with gate magnet 50 fastened to vehicle A as shown in FIG. 2b.
  • One pole or terminal of each of Reedswitches K and I-i forms a common pole 150 with one pole of each of the magnet switches 20 of the switch field.
  • the other pole of Reed-switch K which has not been mentioned, is connected to the negative pole of the feed current source D and the positive pole to the not-mentioned other pole of the Reedswitch K
  • the poles of positive and negative voltage of current source D are to be interpreted in comparison with the base voltage of the device.
  • the other poles or terminals of the magnet switches 20 of the switch field shown in FIG. 3 are connected in rowed grouping, for example in the vehicle number digit value row I, with poles 200-209 and these are connected with the input poles 200-209' of the of the coding matrix I" (see FIG. 4b pertinent to vehicle number digit row 1'.
  • the terminals of the switches 20 are connected with poles 100-109, and these in turn are connected with the input poles 100'-109' of coding matrix XII pertinent to vehicle number digit row XII (see FIG. 4a
  • each matrix e.g., terminals 200'-209 of matrix I" shown in FIG. 4b, are coordinated with two sets of output terminals or poles, eg, the output poles 11-15 and 11'-15, according to the ABC 5-unit code.
  • One group of these output terminals i.e., the terminals 11-15, is connected to the input terminals 200'-209' via aplurality of diodes 80, which are all arranged in the same current carrying direction in a manner to provide the desired 5-unit code representing the numerical value of the input signal at the output tenninals 11-15 when positive voltage input signals are applied to the input terminals 200'209'.
  • the other group of output terminals i.e., the terminals 11'- -l5' are connected to the input terminals 200'209 via diodes 90 which are all arranged in the opposite or blocking direction, in a manner to provide 5unit coded digits at the output terminals 11'l5' which represent the compliment of the above-mentioned numerical value when negative input signals are applied to the input terminals 200'-209'.
  • the output poles of matrices I"-XII" are connected to the individual input poles of signal storing elements 40 of the electronic signal storing units 26-30, in a manner whereby the input poles of each individual signal storing element 40 are connected to the output of matrices having two different digit value (for example to the output poles 11- -15 and 11'-l5 and 121-125 and 121125' of matrices l" and XII".
  • the output poles 121-125 of matrix XII" corresponding to the highest digit values are connected to one of the inputs of signal storing elements 40 of signal storing unit 29, pertinent to the highest digit values, whereas the other output poles 121'-125' of the same matrix XII are'connected to the storing elements 40 of storing unit 26, pertinent to the lowest digit value.
  • One of output poles 11-15 of matrix I" corresponding to the lowest digit value is connected to the inputs of storing elements 40 of the signal storing unit 26 corresponding to the lowest digit value, whereas the output poles 11-15' of the same matrix I" are connected to the signal storing elements 40 of the signal storing unit 29, corresponding to the highest digit value.
  • the one type of outputs of the matrices corresponding to a digit value numeral which is by one, two, etc. smaller than the highest digit value numeral are connected to one type of the inputs of the corresponding signal storing elements 40 of the pertinent storing unit which are by one, two, etc. smaller than the highest digit value numeral, whereas the other output of the same matrix are connected to the other inputs of signal storing unit being by one, two, etc. higher than the highest digit value numeral.
  • the output poles of signal storing element 40 are connected to the inputs of signal forming stages 23, whereas these latter as well as the outputs of the numeral change signal transmitter 31, of the line lifting signal transmitter 32 and of vehicle reverse switch 33 are connected to the input of the individual gates of OR gate unit 35.
  • FIG. 5 only signal storing units 26-29 of vehicle number digit value rows l and II as well as XI and XII are shown.
  • the storing units not shown in the FIG. are indicated by dotted lines 30.
  • the individual numeral character output 61-65 of the OR gate unit 35 are connected to input poles 41-45 of the unit 36 for reproducing the signal, for example a tape perforating machine.
  • the combined inputs of one signal storing unit 26-30 each, of numeral change signal transmitter 31, of lie line lifting signal transmitter 32, and of vehicle reverse switch 33 are connected to one output each of ring counter 37 in such a manner that the one input of numeral change transmitter 31 is connected to the output 24 of the flip-flop of the unit indicating the basic condition of ring counter 37, and the corresponding output poles which are by one, two, etc. digits higher, are connected to a common input of the storing units of those units which have a digit value being by one, two, etc. lower than the highest value.
  • the output pole 22 denoting the last but one output of ring counter 37 is connected to the common input of the line lift signal transmitter 32, whereas the output pole 21 denoting the last output of the ring counter 37 is connected to the common input of carriage reverse signal generator 33; the outputs from generators 32 and 33, as well as that from generator 31 serving to control the subsequent Telex systems.
  • the output pole 38 denoting the basic condition of ring counter 37 is connected to one of the inputs of signal storing element 52 which actuates the input of ring counter 37 by means of a gate pulse, whereas the output of signal forming stage 51 for the starting signal is connected to the other input of the same signal storing element 52.
  • the input of this signal forming stage 51 is connected to the common pole of magnetic switch 20 of the signal receiver C.
  • the output pole 38 indicating the operative condition of unit 36 for reproducing the signal is connected to the input of gate circuit 53 which controls the ring counter 37, whereas the output of signal storing element 52 is connected to the input of the same gate circuit 53, which is actuated by the gate pulse, and to the output of gate circuit 53 is connected the control input 46 of ring counter 37, as well as to the input of signal-forming circuit 54 which actuates the unit 36 which reproduces the signal.
  • the output of the signal-forming circuit 54 is connected to the starting input of the signal-reproducing unit 47.
  • the device according to the invention works in the following manner:
  • the number corresponding to the vehicle number that is the number 246, 307, 591, 853 is coded in relation to gate magnet 50 according to the code of 1011 by numerical magnets 60 corresponding to the rows and columns.
  • the track transmitter B moves in a plane above and parallel to the signal receiver.
  • the output 1W2 of the magnet switch 20 will switch a positive voltage into the vehicle number digit value row XII in column 303' corresponding to the highest digit value, or inlet pole T02 of matrix XII", whereas the output 203 of the magnet switch 20 in column 3% vehicle number digit value row I, corresponding to the lowest digit value, will switch onto inlet pole 203' of matrix I a positive voltage.
  • the diodes 80 arranged in the conducting direction causes outlet poles l23l24l of matrix Xll" and thus the third and fourth signal storing elements 40 of signal storing unit 29 corresponding to the highest digit value, change state and store the signals in this manner.
  • the diodes 80 arranged in matrix I" in the conducting direction similarly flip over outlet poles I2, l3, l4, 15 of matrix I", the second, third, etc. signal elements 40 of signal storing unit 26, corresponding to the smallest digit value, and thus store the signal in this manner. Also the remaining signals read in the signal receiver, are fed through matrices II"XI" to the signal storing elements 40 of the corresponding signal storing unit 40, and thus also stored in this manner.
  • Ring counter 37 continues to flip or change its state from the basic position, under the action of the arriving signal, and outlet 24 sends a signal for selection to the reading inlet of row lift signal transmitter 3i, and sends an information signal from the outlet of these latter circuit through the numeral characteristic outlet 63 of OR gate unit 35 to inlet 43 of the signal reproducing unit 36. Simultaneously therewith, a starting impulse arrives at the starting inlet, which impulse is given by signal forming circuit 54 performs the starting. Upon appearance of this signal as well as of the information signal appearing at the same time, the signal reproducing unit 36 perforates on the tape the signal having the character corresponding to the numeral key, according to the S-unit code ABC for the subsequent Telex system.
  • the first number shown at the left-hand end of the row corresponds to numeral XII, having the highest digit value
  • numeral I having the lowest digit value
  • Reed-switch K switches to common pole 150 of magnet switch 20 a voltage which is negative with respect to the base (support) voltage of the device.
  • the numeral XII corresponding to the digit value row with the highest digit value is switched over to magnet switch 20 which is in column 307' (see FIG.
  • magnet switch 20 being in column 308, also switches on, permits a negative voltage to arrive at the input pole 207 of matrix I" via the output 207 of magnet switch 20, and via diodes at output poles l3 and 14.
  • These negative output signals cause the third and fourth storing elements 40 of signal storing unit 29 corresponding to the highest digit value to change their state and store the numeral in this fashion (see FIG. 5).
  • the numerals of the vehicle numbers corresponding to the remaining digit values are stored in the same manner as stated above via the output of ring counter 37 of in the aforestated manner, the recorded information is read from signal storing units 26 to 30, the numeral change is read from numeral change transmitter 31 the line lift signal is read from line lift transmitter 32 and the carriage return signal of the typewriter is read from the carriage return signal generator 33, and are conducted to the input poles of the unit 36 for recording the signal.
  • the device according to the present invention may also be of such configuration that output poles 11 to I5 and 11 to I5, or I21 to I25 and I21 to of coding unit E are directly connected to the control input of units, which actuate the perforating punches of a marginal punching arrangement (with transistor circuits, for example).
  • the electronic or mechanical signal storing unit of signal storing member 36 may comprise a calculator or a punch card signal storing arrangement.
  • the device according to the present invention may also be of such configuration that there is connected to the input of signal storing unit F and to signal fixing unit L the output of unit I, coding point of time and point of track, so that simultaneously with the transmitted information, there is processed also information identifying the point of time and the point of track.
  • the coding is carried out in coding unit E by means of diodes or by absence of diodes, in a manner known per se.
  • coded output signals which, depending on the determined relative forward direction of travel on of the transmitter with respect to the receiver, either represents the transmitted information with its original sequence of digits and numerical values or represents the transmitted information with the reverse sequence of digits having complimentary numerical values;
  • a system for determining the identifying number of a vehicle as it passes a predetem'iined point comprising in combination;
  • a system for transmitting information, and in particular and an identifying number, between a track-bound vehicle and a given location along the trackas the vehicle passes said given location comprising in combination:
  • said transmitter including a plurality of permanent magnets selectively positioned in rows and columns according to a desired code to represent the information to'be transmitted;
  • said receiver including a plurality of switches which are responsive to the magnetic fields from said permanent magnets, said switches being correspondingly arranged in rows and columns with one switch being provided for each possible position of a magnet in said transmitter;
  • said coding means comprises at least one diode matrix having two of output leads, one of said sets of output leads providing providing a binary type coded output signal representing the numerical value of the input signal to the matrix and the other of said sets of output leads providing a binary type coded output signal representing the complimentary numericalvalue of the input signal to the matrix.
  • said signal storing means comprises an intermediary signal storage unit having a signal recording unit connected to the output thereof.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Traffic Control Systems (AREA)
US728183A 1967-05-10 1968-05-10 Method and apparatus for transmitting information Expired - Lifetime US3579265A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HUMA001711 1967-05-10

Publications (1)

Publication Number Publication Date
US3579265A true US3579265A (en) 1971-05-18

Family

ID=10998403

Family Applications (1)

Application Number Title Priority Date Filing Date
US728183A Expired - Lifetime US3579265A (en) 1967-05-10 1968-05-10 Method and apparatus for transmitting information

Country Status (11)

Country Link
US (1) US3579265A (cs)
AT (1) AT294913B (cs)
BE (1) BE715005A (cs)
CH (1) CH479433A (cs)
CS (1) CS164811B2 (cs)
DE (1) DE1755448C3 (cs)
DK (1) DK125180B (cs)
FR (1) FR1565820A (cs)
GB (1) GB1232261A (cs)
NL (1) NL6806602A (cs)
SE (1) SE343806B (cs)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982275A (en) * 1975-05-27 1976-09-21 Ivan Vasilievich Antonets Read-write apparatus for use in a conveyor control

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3691398A (en) * 1970-06-15 1972-09-12 Clark Equipment Co Station address and control system for material handling vehicles

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2877718A (en) * 1954-04-08 1959-03-17 Int Standard Electric Corp Arrangement for the destination-marking of dispatch container in transportation syste
US3168268A (en) * 1960-12-21 1965-02-02 Westinghouse Air Brake Co Train identification systems
US3465131A (en) * 1966-05-27 1969-09-02 Robert S Ten Eyck Metallic coded card with magnetic reed switch reader

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2877718A (en) * 1954-04-08 1959-03-17 Int Standard Electric Corp Arrangement for the destination-marking of dispatch container in transportation syste
US3168268A (en) * 1960-12-21 1965-02-02 Westinghouse Air Brake Co Train identification systems
US3465131A (en) * 1966-05-27 1969-09-02 Robert S Ten Eyck Metallic coded card with magnetic reed switch reader

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982275A (en) * 1975-05-27 1976-09-21 Ivan Vasilievich Antonets Read-write apparatus for use in a conveyor control

Also Published As

Publication number Publication date
SE343806B (cs) 1972-03-20
BE715005A (cs) 1968-09-30
DE1755448A1 (de) 1972-06-08
DE1755448C3 (de) 1974-09-26
FR1565820A (cs) 1969-05-02
NL6806602A (cs) 1968-11-11
DE1755448B2 (de) 1974-02-07
CS164811B2 (cs) 1975-11-28
AT294913B (de) 1971-12-10
GB1232261A (cs) 1971-05-19
DK125180B (da) 1973-01-08
CH479433A (de) 1969-10-15

Similar Documents

Publication Publication Date Title
US3689885A (en) Inductively coupled passive responder and interrogator unit having multidimension electromagnetic field capabilities
BR8302306A (pt) Sistema de transporte
GB1287334A (en) Vehicular electrical-fluidic control systems
US3108694A (en) System for collating documents in response to indicia apparing thereon
US3751640A (en) Code reading system
US2171293A (en) Radio navigational guide system
US3270338A (en) Identification system
US3168268A (en) Train identification systems
US3579265A (en) Method and apparatus for transmitting information
US3230508A (en) System for the simultaneous step-by-step setting of a number of movable elements
GB1257081A (cs)
GB1169784A (en) Improvements in or relating to a Line Printer Control System
US3223353A (en) Apparatus for destination control of a conveyance by means of hall generators
US3470370A (en) Vehicle route tracer
US2189001A (en) Light-responsive commutator or switchboard
US3215820A (en) Vehicle identification system
US3813659A (en) Movable-object identification system
US3215778A (en) Remotely controlled printing apparatus
US3123815A (en) Naxon
US3634950A (en) Electrical arrangement for use in teaching machine
US2795476A (en) Keyboard-controlled programming and imprinting apparatus, method of entering data and novel record format
US2826360A (en) Automatic circuit selector
GB860254A (en) Improvements in means for producing signals from hand-written characters
US1420879A (en) Voting apparatus
GB1167302A (en) Improvements relating to Sorting Apparatus