US2832835A - Selecting system utilizing rotary switches - Google Patents

Selecting system utilizing rotary switches Download PDF

Info

Publication number
US2832835A
US2832835A US351086A US35108653A US2832835A US 2832835 A US2832835 A US 2832835A US 351086 A US351086 A US 351086A US 35108653 A US35108653 A US 35108653A US 2832835 A US2832835 A US 2832835A
Authority
US
United States
Prior art keywords
contacts
wiper
wipers
group
groups
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
US351086A
Other languages
English (en)
Inventor
Charles W Frank
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.)
General Telephone Laboratories Inc
Original Assignee
General Telephone Laboratories Inc
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
Priority to BE527777D priority Critical patent/BE527777A/xx
Application filed by General Telephone Laboratories Inc filed Critical General Telephone Laboratories Inc
Priority to US351086A priority patent/US2832835A/en
Priority to GB8150/54A priority patent/GB754855A/en
Priority to FR1097436D priority patent/FR1097436A/fr
Priority to DEA20104A priority patent/DE1039105B/de
Application granted granted Critical
Publication of US2832835A publication Critical patent/US2832835A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Definitions

  • a feature of this invention is the new and novel arrangement, in a single motion switch, of the bank contact groups whereby fewer operations of the motor magnet, than there are contact positions in a group, are required to step the wipers from group to group.
  • Figs. l, 2 and 3 show a single motion selector switch
  • Fig. l also shows in the form of a block diagram a subscriber line, a line circuit associated therewith, a finder for extending said line to said selector and an allotter associated with said line for taking said lnder into use.
  • the selector bank contacts may be used; and, when two sets of wipers are used as shown herein, the rst position in a group accessible to one wiper set is preferably arranged at approximately the center position of the preceding group accessible to the other wiper set.
  • the staggered arrangement can be practised in a numerical switch having more than two sets of wipers therebyk decreasing the number of steps between numerically succeeding outlet groups.
  • An extra control bank together with a chain of counting relays are used to advance the wipers from group to group in response to successive impulses.
  • the even numbered groups (GRZ-GRO) are accessible to one set of wipers and the odd numbered groups (GR1-GR9) are accessible to the other set.
  • a wiper switching relay R170 controlled by the counting chain determines the wiper set over which the selector will hunt for an idle trunk.
  • the 20-relay counting chain disclosed herein has been selected as the preferred embodiment to permit a simple explanation of the wiper switching and groupskipping operations.
  • the counting chain could be arranged in a manner similar to several reflexed counting chain circuits well known in the art, that is, relays R250 to R320 could be restored and'reoperated to perform the functions respectively of relays R330 to R395.
  • the general principle of reilexing is disclosed in UnitedStates Patent No. 1,226,184.
  • the trunking arrangement shown herein is such that the. trunk groups have varying numbers of trunks therein.
  • R120 will complete at contacts 121 an obvious circuit for operating hold relay R130, the latter closing contacts 132 to ground conductor 125 thereby to 'busy mark the selector.
  • line relay R120 In response to the rst impulse in a first digital series of impulses dialed over the calling line, line relay R120 will restore to close contacts 122 thereby to complete a pulsing circuit including contacts 118, operated contacts 133 of the hold relay, conductor 139, contacts 224 and conductor 138 for operating changeover relay R140 and relay R150.
  • relays R140 and R150 complete a circuit including conductor 128 and contacts 223 for operating the counting relay R210; and, at contacts 147, R completes an alternate pulsing circuit for maintaining R140 operated and operating R150.by succeeding pulses after R220 opens contacts 224.
  • R210 closes contacts 211 to prepare a circuit including contacts 145, conductors 127 and 202, cable C201 to Fig. 1 and contact 191 for operating motor magnet M180 ⁇ if the first digit is 1 or 2; closes contacts r212vto lprepare a circuit for operating wiper switching vrelay R170 if the first digit is 1; closes contacts 213 to maintain itself operated over a circuit includingconductor 136 and contacts 135; and closes contacts 214.to prepare a circuit for operating R220.
  • Relays R130 and R140 are slow to release and therefore remain operated during said series of impulses.
  • relay R220 operates overl a circuit including contacts 214, conductor 129 and contacts 152 and 144.
  • R220 closes contacts 221 yto maintain itself operated over the circuit used by R210 for maintaining itself operated; at contacts 222, extends the conductor 128 to the second counting relay R230 by way of contacts 243; and, at contacts 226, prepares av trunk hunting test circuit for switching relay .R110 and motor magnetV M180.
  • R120 reoperates and R150 restores to operate R240 over a circuit including contacts 144 and 152, conductor 137 and contacts 233.”
  • R240 closes contacts 241 to lock itself operated by way of conductor 136 and also closes contacts 242 to extend conductor 128 to the third counting relay R250 by way of contacts 263.
  • relays R250 and R260 operate and lock themselves operated in response to a third impulse
  • relays R270 and R280, R290 and R300, R310 and R320, R330 and R340, R350 and R360, R370 and R380 and R390 and R395 operate and lock respectively in response to a fourth, fifth, sixth, seventh, eighth, ninth and tenth impulses.
  • R250 When R250 operates in response to a third impulse it closes contacts 252 to complete a circuit including conductor 202, cable C201 to Fig. l, contact 191, wiper 182 and contacts 181 for operating magnet M180 to step the wipers to the next contacts, wiper 182 engaging contact 192. including conductor 203, cable C201, contact 192 and those multipled therewith, wiper 182 and self-interrupting contacts 181 for operating magnet M180 to step the wipers to the third group of contacts GRS, said circuit being completed when wiper 182 engages contact 192.
  • contacts 271, 291, 311, 331, 351, 371, and 391 will, when operated by the operation of their respective relays, complete circuits for respectively advancing the wipers to groups GR4, GRS, GR6, GR7, GRS, GR9 and GRO.
  • the wipers are Yadvanced to odd numbered groups of outlets in response to odd numbered digits and to even numbered groups of outlets in response to even numbered digits; (2) that a circuit it prepared in response to odd numbered digits for operating wiper switching relay R170 to switch connections from the wiper set having access to even numbered groups to wipers 177, 178 and 179 which have access to the odd numbered groups; and (3) that the magnet M180 steps the wipers over only half of the outlets in a numerical group to advance said wipers to the next numerical group. Obviously a substantial reduction in the time necessary to step the wipers from group to group is achieved.
  • wiper 179 encounters ground, over a circuit including contacts 176, 111, 141 and 181. As long as ground is encountered by wiper 179, the winding of switching relay R is short circuited by ground potential over wiper 179, contacts 176 and contacts 111 to the upper terminal of R110 and by ground potential over contacts 131 and 143, conductor 149, contacts 226, conductor 153 and contacts 161 to the lower terminal of R110.
  • R110 should operate at this time over a circuit including contacts 131 and 143, conductor 149, contacts 226, conductor 153, contacts 161, the winding of R110, contacts 141 andV 181, and magnet M180, R110 will be restored by R160 opening contacts 161.
  • R160 removes dial tone from the calling loop and substitutes thereon busy tone from busy tone equipment (not show). If the calling subscriber should then abandon the call, line relay R will restore, followed, after a short time delay, by hold relay R130.
  • R opens the operating circiut of R110; at contacts 134, short circuits R to restore it and completes a circuit including contacts 118 and 122, off-normal contacts 195, andrself-interrupting contacts 181 to operate M180 until the wipers return to normal at which time ott-normal contacts 195 open to open said circuit; andat contacts 135, opens the operating circuit of R and the locking circuits of R210 and R220 to restore them (if any of the relays R230 to R395 had been operated they too would restore).
  • R110 will extend the calling loop to said idle trunk by way of contacts 172 and 174 and wipers 177 and 178; and, at contacts 113 and 116, will open the operating circuit of line relay R120 which relay restores followed by hold relay R130.
  • R130, restoring will not cause M180 to restore the wipers to normal since the restoring circuit is open 4at contacts 118; and R130 will not cause R170, R210 and R220 to restore since contacts 119 complete an alternate holding circuit for said relays before contacts 135 open the original holding circuit.
  • R110 will completee the previously described circuit for operating M180 to return the wipers to normal; and, at contacts 119, it will restore relays R170,
  • a single-motion numerical switch a plurality of wiper sets and sets of bank contacts accessible to each of said wiper sets, magnet means for moving said wiper sets, each set of contacts arranged in groups of contacts, certain of the first contacts in each of said groups engaged by the respective wiper set having access thereto in a position of said wiper sets different from positions in which all of the first contacts in other groups are engaged by their respective wiper sets, said wiper sets and groups arranged for the engagement, by their respective wiper sets, of said certain first contacts in each of said groups, as said wiper sets are moved, followed by the engagement, by the respective wiper set, of one of the certain iirst contacts in a group of another set of contacts, means whereby said magnet means is operated re sponsive to and concurrent with succeeding impulses in a series of impulses received by the switch to step the wipers from group to group, the movement of the wipers from group to group including fewer steps then there are contacts in a group, and means controlled by said last means for
  • a single-motion numerical switch having a plurality of wiper sets and rows of bank contacts accessible to each of said wiper sets, said rows arranged such that said sets of wipers simultaneously move across their respective rows of contacts, the contacts in each of said rows arranged in groups, the bank positions of the first contacts in certain groups accessible to each of said wiper sets offset from the bank positions of the first contacts in all other groups, means operated responsive to and concurrent with successive impulses in a digital series of impulses for stepping said wipers to successive bank positions of the first contacts of said groups, and means operated responsive to said series of impulses for switching through connections to a predetermined one of said wiper sets, dependent upon the number of impulses in said series.
  • a rotary switch having incoming conductors over which impulses are received, a pair of wiper sets, groups of outlets accessible to each wiper set, a plurality of said groups accessible to one of said wiper sets arranged in staggered relationship to a plurality of said groups accessible to the other wiper set, a common control wiper and a contact set accessible thereto, means operated responsive to successive impulses received over said incoming conductors for differently marking said contact set, circuits completed responsive to said common control wiper encountering said different markings for operating said magnet to move wipers to alternately engage the first outlets in said one then said other plurality of groups while impulses are being received, the movement of said wipers from one group to another including fewer steps than there are outlets in said one group, said wipers thereby advanced to the first outlet in a wanted group of outlets in response to a series of impulses received over said conductors, and means dependent upon the number of impulses in said series for rendering one set of wipers effective and the other set ineii
  • a single-motion numerical switch comprising magnet means, a driving element actuated by said means, a plurality of sets of wipers and contact banks, said wipers being carried by said driving element, a plurality of groups of outlets connected to each of said sets of banks, each group having a start position and said groups being connected to the various sets of banks in such relation to the respective sets of wipers that contacts corresponding to start positions of the groups connected to one set of banks and contacts corresponding to start positions of the groups connected to another set of banks are engaged by the respective wiper sets in different positions of said driving element and in cyclically alternating relation, means for causing said magnet means to be operated responsive to and concurrently with the receipt of a series of numerical impulses a given number of times per numerical impulse to step the wipers to succeeding group start positions, whereby said wipers are advanced over positions corresponding to outlets of unwanted groups to the start position of the wanted groups, and means operative depending on the number of received impulses for selectively making one of said wiper sets effective.
  • a switch as claimed in claim 4 wherein said second-mentioned means comprises a circuit including a common control wiper carried by said driving element and groups of common control bank contacts accessible to said common control wiper and relay means operated responsive to succeeding impulses in said series of impulses for marking each succeeding common control group to complete said circuit for operating said magnet means to step the Wipers past each common control group.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Structure Of Telephone Exchanges (AREA)
  • Relay Circuits (AREA)
  • Devices For Supply Of Signal Current (AREA)
US351086A 1953-04-27 1953-04-27 Selecting system utilizing rotary switches Expired - Lifetime US2832835A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE527777D BE527777A (enrdf_load_html_response) 1953-04-27
US351086A US2832835A (en) 1953-04-27 1953-04-27 Selecting system utilizing rotary switches
GB8150/54A GB754855A (en) 1953-04-27 1954-03-19 Selecting system utilizing rotary switches
FR1097436D FR1097436A (fr) 1953-04-27 1954-03-29 Installation téléphonique avec système sélecteur utilisant des commutateurs rotatifs
DEA20104A DE1039105B (de) 1953-04-27 1954-04-12 Schrittschaltwaehler mit nur einer Bewegungsrichtung und verkuerzter Durchschaltezeit fuer Selbstanschlussfernsprechanlagen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US351086A US2832835A (en) 1953-04-27 1953-04-27 Selecting system utilizing rotary switches

Publications (1)

Publication Number Publication Date
US2832835A true US2832835A (en) 1958-04-29

Family

ID=23379505

Family Applications (1)

Application Number Title Priority Date Filing Date
US351086A Expired - Lifetime US2832835A (en) 1953-04-27 1953-04-27 Selecting system utilizing rotary switches

Country Status (5)

Country Link
US (1) US2832835A (enrdf_load_html_response)
BE (1) BE527777A (enrdf_load_html_response)
DE (1) DE1039105B (enrdf_load_html_response)
FR (1) FR1097436A (enrdf_load_html_response)
GB (1) GB754855A (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3171898A (en) * 1959-02-10 1965-03-02 Western Electric Co Telephone systems

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1903207A (en) * 1931-03-02 1933-03-28 Associated Electric Lab Inc Telephone system
US1914384A (en) * 1931-11-09 1933-06-20 Associated Electric Lab Inc Telephone system
US2635147A (en) * 1948-10-25 1953-04-14 Automatic Elect Lab Telephone selector switch utilizing odd-even relay
US2646466A (en) * 1949-10-01 1953-07-21 Automatic Elect Lab Connector switch
US2721902A (en) * 1951-12-26 1955-10-25 Gen Dynamics Corp Selector circuit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE489058C (de) * 1924-12-11 1930-01-13 Siemens & Halske Akt Ges Schaltungsanordnung fuer Waehler
DE594399C (de) * 1925-12-13 1934-03-16 Siemens & Halske Akt Ges Schaltungsanordnung fuer Waehler, deren Einstellglieder zum UEberfahren einer nicht ge-wuenschten Leitungsgruppe durch mehrere in Abhaengigkeit eines Nummernstromstosses erzeugte Stromstoesse betaetigt werden
CH277836A (de) * 1935-11-04 1951-09-15 Siemens Ag Albis Schaltungsanordnung in Fernsprechanlagen mit Gruppenwählern.
DE820744C (de) * 1948-10-02 1951-11-12 Siemens & Halske A G Anordnung zur Steuerung der Dekadenwahl bei schnellaufenden Drehwaehlern, insbesondere Motorwaehlern in Fernmelde-, insbesondere Fernsprechanlagen
DE826012C (de) * 1949-11-26 1951-12-27 Siemens & Halske A G Schaltungsanordnung fuer Fernsprechanlagen mit Waehlerbetrieb, bei denen Waehler mitmehreren gleichzeitig bewegten Schaltarmsaetzen auf mehrere Leitungen derselben Leitungsgruppe eingestellt werden

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1903207A (en) * 1931-03-02 1933-03-28 Associated Electric Lab Inc Telephone system
US1914384A (en) * 1931-11-09 1933-06-20 Associated Electric Lab Inc Telephone system
US2635147A (en) * 1948-10-25 1953-04-14 Automatic Elect Lab Telephone selector switch utilizing odd-even relay
US2646466A (en) * 1949-10-01 1953-07-21 Automatic Elect Lab Connector switch
US2721902A (en) * 1951-12-26 1955-10-25 Gen Dynamics Corp Selector circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3171898A (en) * 1959-02-10 1965-03-02 Western Electric Co Telephone systems

Also Published As

Publication number Publication date
DE1039105B (de) 1958-09-18
BE527777A (enrdf_load_html_response)
FR1097436A (fr) 1955-07-05
GB754855A (en) 1956-08-15

Similar Documents

Publication Publication Date Title
GB409015A (en) Improvements in or relating to telephone systems
US2832835A (en) Selecting system utilizing rotary switches
USRE23056E (en) Relay automatic telephone system
US2707727A (en) Selector for automatic telephone system provided with restricted levels
US2289503A (en) Telephone system
US2994742A (en) Telephone party line lockout system
US2790031A (en) Circuits for rotary selector and connector switches
US2249067A (en) Telephone system
US2702314A (en) Conversation timing means
US2721902A (en) Selector circuit
US1685547A (en) Automatic telephone system
US2986604A (en) Dial telephone office arranged for register-sender control of two-motion step-by-step switches having multilevel trunk groups
US2567115A (en) Electronic director
US3171898A (en) Telephone systems
US2458262A (en) Relay selector circuit arranged to simultaneously test a selected group of trunks
US2036055A (en) Telephone system
US2224517A (en) Telephone system
GB683893A (en) Improvements in or relating to automatic telephone exchange systems
US2530104A (en) Relay automatic telephone system
US2765368A (en) Revertive call circuit
US2791635A (en) P. a. b. x selector-connector switch
US2654001A (en) Sequence switch circuit
US2816961A (en) Telephone system employing impulse responsive cross bar switches
US2767247A (en) Arrangements for single-motion numerical switches in telephone systems
US2680780A (en) Combination toll and local party line connector using a sequence switch