Patent GB-600743-A (GB)
Title: Improvements in electrically-controlled indicator systems
IPC: G08G5/00
Filed: 1945-02-15
Abstract: 600,743. Electric indicating systems. TELEREGISTER CORPORATION. Feb. 15, 1945, No. 3813. Convention date, Jan. 15, 1944. [Class 40 (i)] An indicator for displaying information, such as the progress of a number of flights of aircraft, comprises a Record Board, in which each horizontal row is assigned to a particular flight and has electrical indicators for storing the information regarding the flights, a Display Board also having indicators for storing information regarding the different flights and sequencing means for selecting and displaying in the selected order on the Display Board the information displayed at random on the Record Board. The indicators and the two Boards are under the control of a distant teleprinter 101, Fig. 1, connected with the receiving station by line L or radio. Information is transmitted in groups of six numerals, each numeral being represented by a five-unit permutation code. For instance, information regarding a flight No. 34 passing over a station, Fix 1, at 1.35 p.m. at an altitude of 4500 ft. is transmitted as 3, 4 (Flight No.) ; 1 (Fix) ; 3, (signal for selecting time indicators) ; 3, 5 (Time) ; space ; space ; 3, 4; 1 ; 2 (signal for altitude indicators) ; 4, 5 ; end of message. Row 14 of the Record Board is selected to receive information regarding Flight 34, Fix 1, and its indicators F, IT, IU are set to 1, 3, 4 as shown Fig. 6. Row oo of the Display Board in that portion allocated to Fix 1 is also set to receive information regarding Flight 34 and its indicators IT, IU, Fig. 5, are set to 3 and 4. Recording incoming messages on both Record and Display Boards.-The received signals perforate a tape tl, Fig. I, which controls a tape transmitter TTR1. In response to the end of the message signal, relays EMI-EMI4 operate to energize relay L which locks and causes hunting switch SS to move to position 3, thus completing a circuit for relay TC over segment 1 of distributer DR2, Fig. 3, for connecting the tape transmitter and operating the start magnet SM1 of distributer DR1, Fig. 4. The engagement of brushes b1-b5 of distributer DR1 with segments 2-12 connects the tape transmitter in turn to the 1st Digit Identification storage relays IT1-IT5, Fig. 6, 2nd'Digit Identification, Fix, Range, Data Tens and Data Units storage relays, the operated relays of which lock over contacts of relay REL, Fig. 3. As brush b6, Fig. 4, passes over segments 2-12 of ring 11, it causes stepping of the tape transmitter and actuation of the printing magnet PM of monitor printer MP, Fig. 1. The actuation of the storage relays concerned with identification and fix causes ground to be applied to one conductor of cables 605, 606, 607 feeding the contact banks of indicators IT, IU and F in each row of the record board. In that row where the indicators are on the earthed contacts, relays ITC, IUC and FC are operated to complete a circuit for the gang relay GA of that row, e.g. GA14, Fig. 3, in the present example. The gang relays GA connect the indicators in the selected row of the record board for operation from pulsing relays P1, P2, P4 and P7. Relays PPT, PPU in each row of the record board have been preset in appropriate combinations to represent the corresponding rows in the display board ; relay GA14, Fig. 3, applies ground over the contacts of relays PPT, PPU, Fig. 6, to selectively actuate relays PT1-PT4, PU1-PU4, Fig. 7, to complete a circuit for one of the gang relays DGA, Fig. 5. Thus, in the example, gang relay DGAoo is operated, since row oo of the display board is associated with row 14 of the record board by the setting of relays PPT and PPU in row 14 of the record board. Gang relay DGAoo connects the indicators in row oo of the display board for operation from pulsing relays P1, P2, P4 and P7, Fig. 3. The range storage relays R1-R5, Fig. 6, operate to apply ground to either relay T or A, Fig. 3, conditioning the equipment to record time or altitude respectively, relay T being operated first in the example. When brush b6, Fig. 4, passes over segment 14, it energizes start magnet SM2 of distributer DR2, Fig. 3, which begins to move and de-energizes start magnet SM1. As the distributer passes over the even-numbered segments 4-22, pulsing relay P7, Fig. 3, operates ten times so that ten impulses are applied through the contacts of relay T to indicators TT and TU in rows 14 of the Record Board and oo of the Display Board to reset them to their blank positions. When they reach these positions, the off-normal contacts S change over to render subsequent impulses ineffective. Relay AG operates as brush b passes over segment 24 and removes the pulsing battery. As brush b moves over the rest of the segments, relay P1 operates once, P2 twice, P4 four times and P7 seven times. The cornbination of one, two, four and seven pulses forms a code which enables any number of pulses up to ten to be produced in accordance with the circuits set up by the Data (Tens) and Data (Units) storage relays, Fig. 6, the fiveunit code being changed to a four-unit code by the pyramidal arrangement of contacts. The pulses from the pulsing relays are applied through contacts of relay T to the stepping magnets of indicators TT and TU in row 14 of the Record Board and oo of the Display Board, the first impulse being effected over a contact of AG. When the brush reaches segment 45, relay REL operates and releases relay AG and the storage relays, Fig. 6, and as it reaches its rest position starts distributer DR1 again so that the next portion of the incoming message is stored in indicators AT, AU, the two space characters on the tape having been stepped out by the tape magnet TS and recorded on the monitor printer MP, Fig. 1, when the distributer DR2 passed over segments 7 and 15 and operated relay PTR, Fig. 3. The end of message signal operates a combination of relays RS1-RS4, Fig. 1, and when distributer DR2 passes segment 5 relay RS5 operates to release relays L and TC. Setting indicators from local keyboard, Fig. 2.- Keys PP TENS, PP UNITS determine the row in the Display Board; keys HOR. POS. TENS, HOR. POS. UNITS determine the row in the Record Board ; so that for Flight 34 to be recorded in row oo of the Display Board and row 14 in the Record Board, keys o of PP TENS, o of PP UNITS, 3 of DATA TENS, 4 of DATA UNITS, 1 of HOR. POS. TENS and 4 of HOR. POS. UNITS are set. Finally, key I is operated to actuate relay K, Fig. 1, to earth contacts 4, 8 on bank A and cause switch SS to step on until it rests on an earthed contact, thus completing a circuit for relay KS, Fig. 2. Relay KS actuates relay GA14, Fig. 3, over the contacts connected to HOR. POS. keys, and energizes start magnet SM2 over contacts SEQ, Fig. 2. As the brush of distributer DR2 passes over segment 3, the reset coils R of the relays PPT, PPU in row 14, Fig. 6, are operated in accordance with the setting of keys PP TENS and PP UNITS, so that the corresponding relays PT1-4, PU1-4 operate and selectively actuate relays PToo, Fig. 7, and DGAoo, Fig. 5, in accordance with the oo setting of keys PP TENS and PP UNITS, Fig. 2. The operation of relays GA14 and DGAoo connects the indicators in row 14 of the Record Board and the indicators of row oo in the Display Board for operation by the pulsing relays P1, P2, P4, P7, Fig. 3, in response to the setting of keys DATA TENS, DATA UNITS as distributer DR2 completes its cycle. The final operation of relay REL, Fig. 3, releases all operated relays and distributer DR2 stops. In a similar manner, altitude, time and fix may be set on the indicators by selection of keys in the DATA TENS and DATA UNITS rows, Fig. 2, and operation of keys T, A, F. Arranging the display board in a desired sequence, e.y. chronological order. (Multiple row sequencing).-Each row of the record board has indicators NPT, NPU, Figs. 3, 4, which are set by operation of DATA TENS and DATA UNITS keys, Fig. 2, and key NP so as to indicate the desired new corresponding position in the display board. Thus, if it is desired to display rows 14 and oo of the record board in rows oo and o4 of the display board, the NPT, NPU indicators in rows 14 and oo of the record board are set to oo and o4. On operation of key SEQ, relay SST, Fig. 7, and start magnet SM3, Fig. 8, are operated and distributer DR3 starts to move. Stepping switch DGS, Fig. 7, is also operated to move one step and operate gang relays DGAoo ... o4. The row of the Record Board whose NP indicators are set to 00, i.e. row 14, has its GS relay, Figs. 6 and 7, operated first when the distributer passes segment 0 of ring 2, relay SMRO, Fig. 8, being operated at the same time. The indicators IT, IU, TT, TU, AT and AU on the Record Board are connected-to translator groups C-H, Figs. 7 and 9, in which the ten-unit code is translated to a four-unit permutation code for storage in the relay Group O, Fig. 10. As the distributer passes segment 0 of ring 4, the reset windings R of relays PPT and PPU of row 14 are operated to erase the previous setting and the new setting on indicators NPT and NPU is. transferred to the present position relays PPT and PPU, the ten-unit code being translated to a four-unit code by NP translators, Fig. 4. Distributer DR3 next closes a circuit through segment 1 of rings 2 and 4 to select the row in the Record Board bearing NP number 01 to transfer the data stored in the indicators to the storage relays of Group 1, Fig. 10, and to set up the new position numbers in the present position relays PPT and PPU of that row. As the distributer passes segment 0 to 10 of ring 5, 10 pulses are applied by pulsing relay P, Fig. 10, over contacts of relays DGA00-04 to set all the indicators in rows 00 ... 04 of the display board to their blank positions. The distributer next passes over segment 6, 7 and 8 of ring 2 and segment 6 of ring 4 and applies current for a duration of two, one, four and seven pulses to the contacts of the storage relays, of Fig. 10, and as the distributer