US2876288A - Magnetic drum auxiliary sender for telephone switching system - Google Patents

Magnetic drum auxiliary sender for telephone switching system Download PDF

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Publication number
US2876288A
US2876288A US554280A US55428055A US2876288A US 2876288 A US2876288 A US 2876288A US 554280 A US554280 A US 554280A US 55428055 A US55428055 A US 55428055A US 2876288 A US2876288 A US 2876288A
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US
United States
Prior art keywords
switching system
magnetic drum
telephone switching
brooks
sender
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
US554280A
Inventor
Chester E Brooks
William O Fleckenstein
Robert C Lee
Howard N Seckler
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.)
AT&T Corp
Original Assignee
Bell 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
Application filed by Bell Telephone Laboratories Inc filed Critical Bell Telephone Laboratories Inc
Priority to US554280A priority Critical patent/US2876288A/en
Application granted granted Critical
Publication of US2876288A publication Critical patent/US2876288A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0004—Selecting arrangements using crossbar selectors in the switching stages

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Magnetic Record Carriers (AREA)

Description

56 sheets-sheet vC. E. BROOKS ET AL MAGNETIC DRUM AUXILIARY SENDER FOR TELEPHONE swr'rcHING SYSTEM March 3, 1959 Filed Deo.
R. C. LEE- H.
Mavrch 3, 19.59 c.- l-:Q BROOKS ET AL MAGNETIC DRUM AUXILIARY SENDER FOR TELEPHONE SWITCHING SYSTEM 56 Sheets-Sheet 2 Filed Deo. 20, 1955 EN QN www n XPSQR ATTORNEY March 3, 1.959 c. E. BROOKS ET AL 2,876,288 MAGNETIC DRUM AUXILIARY SEDER FOR TELEPHONE SWITCHING SYSTEM Filed Dec.
56 Sheets-Sheet 3 NDW wom. Bu 0528 Mdm.
March 3, 1959 c. E. BROOKS ETAAL. 2,876,288
MAGNETICDRUM AUXILIARY SENDER FOR TELEPHONE SWITCHING SYSTEM Filed Dec. 20, 1955 AND GATE OUT 56 Sheets-'Sheet 4 F/G. 7 DELA y FIG. 9 l -fm/ERTER A TTOR/VEK I March`3', 1.959 c. E. BROOKS ET'AL MAGNETIC DRUM AUXILIARY SENDEHFOR TELEPHONE SWITCHING SYSTEM Filed Dec.' 20, 1955 56 Sheets-Sheet 5 Tof/EAD v lcs/G. v A
v March 3', 19459 l c. E. BROOKS ET'AL 2,876,288
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MAGNETIC DRUM AUXILIARY SENDER FOR TELEPHONE SWITCHING SYSTEM Filed Deo. 2o, 1955 v5e sheets-sheet '7 7'/ME BETWEEN I ADJACENT SLOTS -l fwn/READ SV/vc. PULSES I l 'l ,/wR/TE SY/vc. Pu/.sEs
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TEST SPACE E BV H. N. .SECKLER MEM A TTORNEV MAGNETIC DRUM AUXILIARY SENDER FOR TELEPHONE swITcMING SYSTEM Filed Deo. 2o, 1955 March 3, 1959 c. E. BROOKS ET AL 56 Sheets-Sheet 8 FIG. '/8
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MAGNETIC DRUM AUXILIARY SENDER FR TELEPHONE SWITCHING SYSTEM Filed D60. 20. 1955 56 sheets-sheet 9 TRACK LON.
wwwmwwwwwwww. wwwwwwwwwwwvr M 0 .A B C m H T U m lU W M 0 H A. C m AH UX m /U W kwm, .QQ\Q, wQwEm for a Qmkbmfb .,w QMXQWIQ .QQ O 0 0 O 0 ,.0 0 0 0 0 onv 0 .i 0 0 l 0 0 0 0 0 0 0 0 0 0 0 P00070////0ao////o0oo/l//oo 0 0 0 0 0 0 .0. 0 l f 0 0 0 0 0 0 0 O 0 0 0 0 0 O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0v 0 0 v`0 0 0 0 /v J 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .0. 0 0 0 04 0 0 0 0 0 0 0 0 0 0 0 0 0 0A 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 0 l. v v 0 v l 2 J 4 5 6 7 6 9 w H H .M m .n la m m a n y m,
CE. BROOKS /NVENTORS lC/(ENSTE/N By H. N. SEC/(LER TTOR/VEV March 3, 1959 c. E. BROOKS ET A1. 2,876,288
MAGNETIC vDRUM AUXILIARY SENDER FOR TELEPHONE SWITCHING SYSTEM Filed Dec. 20, 1955 56 Sheets-Sheet 10 Marclzh 3, 1959 c E. BROOKS ET Al. 2,876,288
MAGNETIC DRUM AUXILIARYA SENDER FOR TELEPHONE SWITCHING SYSTEM @Roo/(s /NVEA/m/Ps KENSTEW H. N sick/.ER
A TTORNE V R. C LEE NS v March 3, 1959 c. E. BRooKs ET AL 2,876,288
MAGNETIC DRUM AUXILIARY SENDER FOR TELEPHONE SWITCHING SYSTEM v Filednec. 2o, 1955 56 Sheets-Sheet 12 A 7' TORNE'V March 8, 1959 C. E. BROOKS ET'AL MAGNETIC DRUM AUXILIARY SENDER F08 TELEPHONE SWITCHIMG SYSTEM Q l n n l n M rv... m l n n l T N .t Il l l R nOH l1 mi n. l E T P QS l 0M wn. N r QQ.; a MMHR m QQ i BFLS h n v EQCN. m Y 1 If] &W.R.H. 5 R l l l l I l I t QS .ok l m .o2 O mmzmw mmzmw mw Y mmzmw W W V N QQ Sum Filed Dec.
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March 3, 1959 Filed DeCQ 20, 1955 C. E. BROOKS ET AL MAGNETIC DRUM AUXILIARY SENDER FOR TELEPHONE SWITCHING SYSTEM 56 Sheets-Sheet 14 A TTORNEY March 3, 1959 c. E. BROOKS ET Ax.
MAGNETIC DRUM AUXILIARY SENDER FOR TELEPHONE SWITCHING SYSTEM 56 Sheets-Sheet 15 Filed Dec. 20, 1955 Smm Sui uns@ m m R Sm E KK L 0C K BHLS EddN. CWRM.
ATTORNEY March 3, 1959 c, E. BROOKS ET A1. '2,876,288
MAGNETIC DRUM AUXILIARY SENDER FOR TELEPHONE SWITCHING SYSTEM Filed Dec. 2o, 1955 ,f 5e sheets-sheet .1e
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/NVENTORS R EE gy SEC/(LER MI5/JWM A TTORNEV MAGNETIC DRUM AUXILIARY SENDER FOR TELEPHONE SWITCHING SYSTEM Filed Dec. 2o, 1955 March 3, 1959- c. E. BROOKS ET-AL 55 sheets-sheet 17 @GNN KDO OSW c. E. BRoo/rs /NVEA/Tons x2: CKENSTEW BV H. N. .ssc/(LER l QN ...um
A roR/VEV f March 3, 1959 c. E. BROOKS ET A1. 2,876,288
MAGNETIC DRUM AUXILIARY SENDER FOR TELEPHONE SWITCHING SYSTEM Filed Dec. 20, 1955 56 Sheets-Sheet 18 NTQQ Q @S E TQQ DTO QQ OTTQQ ,.ATTORNEV c. E. @Rocks /NVEA/rops gf g: {CKENSTN By H. N. 55C/(LER MAGNETIC DRUM AUXILIARY SENDER FOR TELEPHONE SWITCHING SYSTEM Filed Deo. 20, 1955 March 3, 1959 c. E. BROOKS ET AL 56 Sheets-Sheet 19 9x Q9: Sis
Q6 w me si QQ @Sii aki W m M s n Mm @usm Brax adm cin# s m V. E B V w QMQ l MAGNETIC DRUM AUXILIARY SENDER FOR TELEPHONE SWITCHING SYSTEM Filed Dec.A 20, 1955 March 3, 1959 c. E. BROOKS ET AL 56 Sheets-Sheet 2O MNR.
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C. E'. BROOKS /NVENTOPS Hf 0. FLECKEMS'TE/N A TTOR/VEV
US554280A 1955-12-20 1955-12-20 Magnetic drum auxiliary sender for telephone switching system Expired - Lifetime US2876288A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3149206A (en) * 1961-03-27 1964-09-15 Bell Telephone Labor Inc Translator control circuit
US3170041A (en) * 1962-10-16 1965-02-16 Automatic Elect Lab Communication switching system
US3231671A (en) * 1959-05-27 1966-01-25 North Electric Co Automatic toll ticketing rate selector
US3378818A (en) * 1963-05-07 1968-04-16 Int Standard Electric Corp Data processing system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2618708A (en) * 1942-08-06 1952-11-18 Automatic Elect Lab Telephone system with main and secondary register
US2678353A (en) * 1949-02-12 1954-05-11 Automatic Elect Lab Telephone system
US2680155A (en) * 1949-10-26 1954-06-01 Automatic Elect Lab Telephone system using magnetic recorder
US2764634A (en) * 1950-09-07 1956-09-25 Bell Telephone Labor Inc Magnetic recording dial pulse storage register
US2770676A (en) * 1952-12-18 1956-11-13 Int Standard Electric Corp Automatic telephone systems

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2618708A (en) * 1942-08-06 1952-11-18 Automatic Elect Lab Telephone system with main and secondary register
US2678353A (en) * 1949-02-12 1954-05-11 Automatic Elect Lab Telephone system
US2680155A (en) * 1949-10-26 1954-06-01 Automatic Elect Lab Telephone system using magnetic recorder
US2764634A (en) * 1950-09-07 1956-09-25 Bell Telephone Labor Inc Magnetic recording dial pulse storage register
US2770676A (en) * 1952-12-18 1956-11-13 Int Standard Electric Corp Automatic telephone systems

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3231671A (en) * 1959-05-27 1966-01-25 North Electric Co Automatic toll ticketing rate selector
US3149206A (en) * 1961-03-27 1964-09-15 Bell Telephone Labor Inc Translator control circuit
US3170041A (en) * 1962-10-16 1965-02-16 Automatic Elect Lab Communication switching system
US3378818A (en) * 1963-05-07 1968-04-16 Int Standard Electric Corp Data processing system

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