US2972089A - Programming circuits - Google Patents

Programming circuits Download PDF

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Publication number
US2972089A
US2972089A US686323A US68632357A US2972089A US 2972089 A US2972089 A US 2972089A US 686323 A US686323 A US 686323A US 68632357 A US68632357 A US 68632357A US 2972089 A US2972089 A US 2972089A
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Prior art keywords
relay
relays
lead
front contact
terminal
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Expired - Lifetime
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US686323A
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English (en)
Inventor
Arthur P Jackel
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Westinghouse Air Brake Co
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Westinghouse Air Brake Co
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Priority to BE570699D priority Critical patent/BE570699A/xx
Application filed by Westinghouse Air Brake Co filed Critical Westinghouse Air Brake Co
Priority to US686323A priority patent/US2972089A/en
Priority to FR1208323D priority patent/FR1208323A/fr
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Publication of US2972089A publication Critical patent/US2972089A/en
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Definitions

  • My invention relates to programming circuits and more particularly to a circuit including a chain of counting relays for programming the printout of data to such devices as electric typewriters, Teletype distributors, tape punches, and the like.
  • the chain of relays comprise a first and second group of relays; the relays in the first group being energized successively in response to a control signal; and, the relays in said second group being energized successively by operation of the last relay of said first group to count the number of cycles of operation of said first group.
  • Drive relays initiate the operation of said counting chains.
  • One of the relays of a pair of half-step operated relays is operated to enter a count to the counting chain, and the other relay is then operated to a similar position as the first relay to energize the typewriter solenoids.
  • Fig. 1 is a schematic diagram of a programming circuit according to the present invention.
  • Fig. 2 is a schematic diagram showing a selection circuit for energizing the solenoids of an electric typewriter.
  • a present use of the disclosed program chain for printout is to feed data received in the form of pulses at a central ofliee of an oil pipeline control system to an electric typewriter in a fixed format.
  • One embodiment of the circuitry employed is shown in Figs. 1 and 2.
  • the resistors connected in parallel to the various relays are the usual snubbing resistors for decreasing slightly the speed at which the relay contacts release.
  • relay or contact picked up refers to a relay being energized to actuate its armature to close its front contacts
  • relay or contact released refers to a relay being deenergized to actuate its armature to open its front contacts and close its back contacts.
  • a program mastercontrol relay PGM is picked up over any desired initiation source, such as a clock, a push button operation, or a relay command.
  • the circuit for relay PGM also includes back contact of relay PGREnd and back contact f of relay PGT.
  • Relay PGM starts the printout operation by picking up a local drive relay PGA over a circuit extending from terminal N through the operating winding of relay PGA, lead 13, front contact d of relay PGM, lead 12, back contact b of relay PGREnd, lead 11, and back contact a of relay PGT to terminal B.
  • Relay PGA in turn picks up the first chain repeat relay PGRl over a circuit extending from terminal N through the winding of relay' PGRI, lead 16, back contact b of relay PGT, lead 15, front contact a of relay PGA, lead 35:4, and front contact 0 of PGM to terminal B.
  • Relay PGT is a slow release, pulse-bridging timer relay.
  • Relays PGRl to PGREnd function as a group of cycle counting relays or chain repeat relays to count the number of times a first group of counting relays, PG1 to PG8, cycle or repeat.
  • Relays PG1 to PGS are successively energized by input control pulses, as will hereinafter be described.
  • Relay PGRI then picks up relay PG1 over a circuit extending from terminal N through the winding of PG1, lead 19, front contact 0 of relay PGRl, lead 18, back contact e of relay PGT, lead 17, and front contact b of relay PGM to terminal B.
  • Relays PGY and PGZ provide a pair of half-step operated relays for energizing the counting relays PG1- PGS.
  • half step relays PGY and PGZ in effect divide by half the pulsing action of remote drive relay PGB in order to reduce the number of counting relays employed.
  • I RelayPGY then picks up PGT over a circuit extending from terminal N through the operating winding of relay PGT, lead 31, front contact c of relay PGY, lead 23, front contact d of relay PGRI, lead 27, front contact c of relay PG1,.lead 21, front contact a of relay PGA, lead 14, and front contact c of relay PGM to terminal B.
  • Relay PGT opens the initial pick-up circuits to relays PGRl, PG1, PGM, PGA, and PGY. However, PGRI, PG1, PEM, and PGY remain energized by circuits extending over their own front contacts, that is, their stick circuits.
  • the stick circuit for PGRI extends from terminal N through winding PGRI over its own front contact a, the back contacts a of relays PGRZ through PGREnd, lead 10, front contact d of relay PGT, lead 17, and front contact b of relay PGM to terminal B.
  • the stick circuit for'PGl extends from terminal N through winding PG1 over its own front contact a, back contact a of relay PGZ, lead 20, front contact b of PGY, lead 22, front contact e of relay PGT, lead 17, and front contact b of relay PGM to terminal B.
  • the stick circuit for PGY extends from terminal N through the lower winding of PGY over its own front contact a, lead 39, back contact b of relay PGA (now closed), back contact I) of relay PGB, lead 25, front contact c of relay PGT, lead 41, and front contact 0 of relay PGM to terminal B.
  • the stick circuit for relay PGM includes its own front contact a, front contact f of relay PGT, and back contact c of relay PGREnd.
  • Relay PGB is energized by the motion of the type bar which acts to close contact 9 in the energizing circuit of PGB each time a typewriter character is entered.
  • the pulse-bridging timer relay PGT will stay up during the time interval between the pulses received from PGB.
  • Rectifier 35 aids the slow release characteristic of PGT.
  • PGT connects itself under pulse control from the local drive relay PGA and the remote drive relay PGB over a circuit extending from terminal N through winding PGT and its own front contact b, lead 15, front contact a of PGA or front contact a of relay PGB in parallel, lead 14, and front contact of relay PGM to terminal B.
  • a selected typewriter solenoid becomes energized over a circuit including the counting chain relays, the chain repeat relays and the contacts of the pressure data relays.
  • Fig. 2 shows in detail only a part of a complete circuit for energizing the typewriter solenoids.
  • the suction pressure indicating relays are energized by indication storage relays in accordance with the information received from the field.
  • the means of energizing the relays and/or receiving the data is not shown since it is not per se a part of my invention, nor is it necessary to the explanation of my invention.
  • the indication storage of the pressure information may be on the basis of weighted binary code using 4 digits namely 8, 4, 2 and 1.
  • an appropriate energization of the indicating relays an appropriate combination of digits is provided to energize the appropriate solenoid to obtain various numbers between 1 to 9.
  • PGB picks up and thus releases PGY by opening the stick circuit for PGY previously traced and which includes front contact a of PGY.
  • P62 is picked up over a circuit extending from terminal N through the winding of P62, front contact b of relay P61, lead 26, back contact b of relay P68, lead 24, back contact b of relay PGY, lead 22', front contact e of relay PGT, lead 17, and through front contactb of relay PGM to terminal B.
  • PGY releasing also releases P61 since the stick circuit for P61 previously traced and which includes front contact b of PGY is opened. As soon as relay P62 picks up, the snubbing circuit for P61 extending from terminal N through rectifier 34,back contact a of P62, front contact a of P61 and through the winding of P61 back to terminal N is opened and P61 releases.
  • Rectifiers 34 and 36 are usual snubbers for imparting slow release characteristics to counting relays P61-P68.
  • Rectifier 40 is a snubber for relays P6R1-P6REnd.
  • PGB picks up PGY over a circuit extending from terminal N through the upper winding of PGY, back contact a of PGZ, lead 29, front contact b of PGB, lead 25, front contact 0 of PGT, lead 41, and front contact c of P6M to terminal B.
  • PGY picks up counting relay P63 over a circuit extending from terminal N through the Winding of P63, front contact a of P62, back contact a of P61, lead 20, front contact b of PGY, lead 22, front contact e of PGT, lead 17, and front contact b of PGM to terminal N.
  • P63 when picked up releases P62 by interrupting the stick circuit for P62 which includes back contact b of P63 and front contact b of P62. Then when PGB drops out after a short period of time, it picks up PGZ over the circuit including the upper Winding of PGZ, which circuits have been traced hereinabove.
  • one of the half-step operated relays PGY orPGZ, is operated to cause a count to be entered into the counting relays P61 to P68, then after the count is entered into the counting relays, the other halfstep operated relay is operated to cause a solenoid to be energized to enter a typewriter character.
  • Relay PGB continues to advance the chain for eight counts in a manner similar to that described above until relay P68 picks up.
  • P68 picks up over 'a circuit extending from terminal N through the winding of P68, front contact b of P67, back contact b of P66, lead 24, back contact b of PGY, lead 22, front contact e of PGT, lead 17 and front contact b of PGM to terminal B.
  • P68 picks up chain repeat relay P6R2 over a circuit extending from terminal N through winding PGR2, front contact b of PGRl, back contact b of P6R3, back contact b of PGRS, lead 38, back contact b of PGRE, lead 42, front contact e of P68, lead 10, front contact d of PGT, lead 17, and through front contact b of PGM to terminal B.
  • P6R1 When P6R2 picks up, P6R1 is released since the stick circuit for P6R1 extending from terminal N through winding P6R1, its own front contact a, the back contacts a of relays P6R2 through PGREnd, lead 10, front contact d of PGT, lead 17, and through front contact b of PGM to terminal B is opened when back contact a of P6R2 opens.
  • P68 also closes a circuit to pick up PGA to advance the chain locally to the ninth step by picking up P61".
  • PGA is picked up over a circuit extending from terminal N through winding PGA, lead 13, front contact d of PGM, lead 12, back contact b of PGREnd, lead 11, back contact b of PGZ, lead 43, back contact c of PG7 and front contact 0 of PG8 to terminal B.
  • PGl is picked up a second time over a circuit extending from terminal N through winding PGl; leads 19 and 45, front contact a of PG8, back contact a of PG7, lead 47, front contact 01 of PGR2, lead 49, back contact 0 of PGRE, lead 20, front contact b of PGY, lead 22, front contact 2 of PGT, lead 17, and through front contact b of PGM to terminal B.
  • PGRE is also picked up, and it stays up until the seventeenth step.
  • PGRE is picked up over a circuit extending from terminal N through winding PGRE, lead 51, front contact c of PGR2, lead 52, back contact d of PG8, lead 10, front contact d of PGT, lead 17, and through front contact b of PGM to terminal B.
  • PGRE is an even-numbered repeat relay. That is, when PGRE is energized one of the even numbered chain repeat relays PGR2, PGR4 or PGREnd will be energized, and when PGRE is released an odd numbered relay PGRl, PGR3 or PGRS will be energized.
  • Relay PG8 causes the first group of counting relays PG1PG8 to recycle a second time in a manner similar to that described above for the first recycle operation. PGA and PGB continue to advance the chain for eight counts in a manner similar to that described above until P63 picks up a second time. Similarly, relay PG8 will cause relays PG1-PG8 to recycle each time PG8 is energized.
  • PG8 operates as the end relay of the first group of counting relays PG1PG8, also as a control relay for causing a recycling of relays PGl-PGS, and further as a control relay for causing successive ones of-the cycle counting or chain repeat relays PGRl-PGREnd to be energized.
  • Fig. 1 no typewriter character is required to be entered during the operation of PG8.
  • a typewriter character can be entered over PG8 if required.
  • the circuit producing chain advances over contact 0 of PG8 through operating relay PGA is omitted.
  • This circuit may be traced from terminal B over front contact 0 of PG8, back contact 0 of PG7, lead 50, back contact b of PGZ, lead 11, back contact b of PGREnd, lead 55, front contact d of PGM, and through the winding of PGA to terminal N.
  • PGR3 picks up and PGR2 releases.
  • PGR3 picks up over a circuit extending from terminal N through Winding PGR3, front contact b of PGRZ, back contact b of PGR4, lead 53, front contact b of PGRE, lead 42, front contact e of PG8, lead 10, front contact 0! of PGT, lead 17, and through front contact b of PGM to terminal B.
  • PGRZ releases since the stick circuit from terminal N through winding PGRZ, its own front contact a, the back contacts a of relays PGR3 through PGREnd, lead 10, front contact d of PGT, lead 17, and through front contact b of PGM to terminal B is opened when back contact a of relay PGR3 opens.
  • step 24 PGR4 picks up and PGR3 releases.
  • PGRE provides a means of in eifect shifting between two energizing circuits such that only one relay of the PGRE to PGREnd group is energized at a time. Without PGRE all the chain repeat relays PGRl- PGREnd would be energized on one operation since, as can be appreciated there is an overlap in time at the instant a succeeding relay is energized and a preceding relay is released. As seen in Fig. 2 contact d of PGRE also switches the circuit over front contact 1 of PG8 to different selection circuits.
  • PGREnd is picked up over a circuit extending from terminal N through winding PGREnd, front contact b of PGRS, lead 38, back contact b of PGRE, lead 42, front contact e of PG8, lead 10, front contact d of PGT, lead 17, and through front contact b of PGM to terminal B.
  • PGREnd opens the pickup circuit to PGA so no further local chain advances are made.
  • PGA remains deenergized since the circuit previously traced from terminal N to terminal B through winding PGA, lead 13, front contact 0! of PGM, and lead 12 is interrupted when back contact b of PGREnd is opened.
  • PGREnd also releases PGM.
  • PGM is deenergized since its stick circuit from terminal N to terminal B through winding PGM, is interrupted when back contact c of PGREnd opens.
  • PGM releases all the other program relays since the energizing circuits heretofore traced are interrupted when the PGM contacts release.
  • Fig. 2 shows one-Wire circuit selections in which one solenoid is energized to actuate each character, and which may be used for solenoid operated electric typewriters.
  • a five-wire selection network may also be controlled in a manner as disclosed above over an expanded selection network for operating Teletype printers and distributors, tape punches and the like.
  • a program chain comprising a plurality of electrically connected groups of counting relays, means providing control signals, means responsive to the control signals for energizing and operating the relays of the first group successively, operation of the last relay in said first group resetting said first group to its initial condition and energizing the next numerical higher group, operation of the last counting relay in each group resetting the respective group to its initial condition and controlling the energization of successive ones of the relays in said next higher group.
  • a chain for programming the printout of pulsed data to electrically actuated printing devices and for energizing solenoids of said devices by data arranged in a fixed format, said chain comprising first and second electrically connected groups of counting relays, means providing control signals, relay means responsive to said control signals for energizing and operating the relays in said first group successively, operation of the last relay in said first group energizing the relays in said second group successively to count the number of cycles of operation of said first group of relays, and said relay means further being responsive to said control signals for energizing said solenoids over predetermined combinations of the contacts of said first and second group of relays.
  • a program chain for energizing the solenoids of electrically actuated printing devices by data arranged in a fixed format comprising first and second electrically connected groups of counting relays, means providing control signals, relay means including a pair of stepping relays, said relay means being responsive to said control signals for energizing and operating said first group of relays successively, operation of the same last relay in said first group of counting relays energizing the relays in said second group successively to count the operating cycles of said first group of relays, one of said pair of stepping relays being operated in response to said control signals at a given time to cause a count to be entered into said counting groups and the other relay ofsaid pair being operated in response to said control signals after the count is entered into said groups to cause a solenoid to be energized whereby'said printing devices print a character.
  • a program chain for energizing the character cntering solenoids of electrically actuated printing devices by data arranged in a fixed format comprising first and second groups of electrically connected counting relays, means providing control signals, relay means including a pair of stepping relays responsive to said control signals for energizing and operating said first group of relays successively, operation of the same last relay in said first group energizing the relays of said second group successively to count the number of operating cycles of said first group of relays, said pair of stepping relays each having first and second positions, relay means responsive to said control signals for operating said stepping relays, one of said stepping relays when operated to its first position causing one of the odd numbered relays in said first group of relays to be energized, the other of said stepping relays when operated to its second position causing one of the even numbered relays in said first group to be energized, and said stepping relays when both operated to. a same position causing one of said solenoids to be energize
  • a program chain for programming the printout of pulsed data to electrically actuated printing devices such as electric typewriters and for energizing the solenoids of said devices by data arranged in a fixed format
  • said program chain comprising first and second groups of counting relays, means providing control signals, relay means responsive to said control signals for energizing and operating the relays in said first group successively, operation of the same last relay in said first group energizing the relays in said second group successively to count the number of cycles of said first group of relays, said relay means including drive relays for controlling the'successive operation of said counting groups, a pulse bridging timer relay for maintaining said chain energized between control pulses, a cycle repeat relay for insuring the energization of only one relay of said second group of relays at a time and a pair of halfstep relays each having a first and second position, said drive relays operating one of said half-step relays to one of its positions to enter a count into said counting groups, and
  • a program chaintor energizing the solenoids of electrically actuated printing devices such as electric typewriters by data arranged in a fixed format, said chain comprising first and second groups of counting relays, means providing control signals, relay means responslve to.
  • said control signals for energizing and operating said first group of relays successively, thesame last relay in said first group effective to successively energize the second group of relays to count the number of operating cycles of said first group of relays
  • said relay means including a pair of half-step operated relays having first and second positions and drive relays for operating the first half-step relay of said pair to one of its positions to cause a count to be entered into said counting groups, and after the count is entered said drive relay operating the other half-step relay to a same position as said first half-step'relay to energize 'a solenoid in said printing device, said half-step relays when both operated to a first position causing a solenoid to be energized over one of the odd numbered relays in said first group and an energized relay of the second group of relays, and said half-step relays when both operated to a second position causing a solenoid to be energized over one of the even numbered relays in said first group and an energized relay of
  • a chain for programming the printout of pulsed data to an electrically actuated printing device such as an electric typewriter and for energizing the solenoids of said device by data arranged in a fixed format, said chain comprising first and second electrically connected groups of counting relays, means providing control signals, relay means responsive to said control signals for energizing and operating the relays in said first group successively, the same last relay in said first group controlling the recycling of said first group and controlling the successive energization of the relays in said second group, said relays in said second group counting the number of cycles of operation of said first group of relays, said relay means including drive relays controlling the successive operation of said counting groups, a pulsebridging timer relay maintaining said groups energized between control pulses, a cycle repeat relay for insuring the energization of only one relay of said second group of relays at a time and a pair of half-step relays, said drive relays operating the first half-step relay of said pair at a given time to cause a count to be entered
  • a program chain for energizing the solenoids of electrically actuating printing devices such as electric typewriters by data arranged in a fixed format comprising means providing control signals, a first group of counting relays, mean responsive to said control signals for energizing and operating said first group of relays successively, and a second group of chain repeat relays, operation of the same last relay in said first group energizing the relays in said second group successively to count the number of cycles of said first group of relays, and relay means operable by said control signals for causing energization of the solenoids over circuits using only the front contacts of said second group of relays whereby contact requirements are kept at a minimum.

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US686323A 1957-09-26 1957-09-26 Programming circuits Expired - Lifetime US2972089A (en)

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BE570699D BE570699A (xx) 1957-09-26
US686323A US2972089A (en) 1957-09-26 1957-09-26 Programming circuits
FR1208323D FR1208323A (fr) 1957-09-26 1958-06-05 Circuits d'exécution de programme

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US686323A US2972089A (en) 1957-09-26 1957-09-26 Programming circuits

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3209996A (en) * 1957-03-07 1965-10-05 Selby International Inc Apparatus for preparing digital record
US3355577A (en) * 1962-10-26 1967-11-28 Olympia Werke Ag Electromechanical counting chain arrangement

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2375413A (en) * 1943-02-17 1945-05-08 John R Guenther Counter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2375413A (en) * 1943-02-17 1945-05-08 John R Guenther Counter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3209996A (en) * 1957-03-07 1965-10-05 Selby International Inc Apparatus for preparing digital record
US3355577A (en) * 1962-10-26 1967-11-28 Olympia Werke Ag Electromechanical counting chain arrangement

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FR1208323A (fr) 1960-02-23
BE570699A (xx)

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