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

Magnetic drum auxiliary sender for telephone switching system Download PDF

Info

Publication number: US2876288A
Authority: US; United States
Prior art keywords: switching system; magnetic drum; telephone switching; brooks; sender
Prior art date: 1955-12-20
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.)

1955-12-20

Filing date

1955-12-20

Publication date

1959-03-03

1955-12-20 Application filed by Bell Telephone Laboratories Inc filed Critical Bell Telephone Laboratories Inc

1955-12-20 Priority to US554280A priority Critical patent/US2876288A/en

1959-03-03 Application granted granted Critical

1959-03-03 Publication of US2876288A publication Critical patent/US2876288A/en

1976-03-03 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Images

Classifications

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

Landscapes

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.

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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

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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

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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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/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

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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

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US554280A 1955-12-20 1955-12-20 Magnetic drum auxiliary sender for telephone switching system Expired - Lifetime US2876288A (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
US554280A US2876288A (en)	1955-12-20	1955-12-20	Magnetic drum auxiliary sender for telephone switching system

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US554280A US2876288A (en)	1955-12-20	1955-12-20	Magnetic drum auxiliary sender for telephone switching system

Publications (1)

Publication Number	Publication Date
US2876288A true US2876288A (en)	1959-03-03

Family

ID=24212749

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
US554280A Expired - Lifetime US2876288A (en)	1955-12-20	1955-12-20	Magnetic drum auxiliary sender for telephone switching system

Country Status (1)

Country	Link
US (1)	US2876288A (en)

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

1955
- 1955-12-20 US US554280A patent/US2876288A/en not_active Expired - Lifetime

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

Publication	Publication Date	Title
US2675427A (en)	1954-04-13	Electrostatic scanning mechanism for scanning both tips and rings of calling lines and combining the results of these scanning operations
US2767246A (en)	1956-10-16	Automatic message accounting system
US2876288A (en)	1959-03-03	Magnetic drum auxiliary sender for telephone switching system
US2259101A (en)	1941-10-14	Telephone system
US2426981A (en)	1947-09-09	Automatic toll ticketing alarm system
US3014097A (en)	1961-12-19	Dial controlled intercommunication systems
US3729586A (en)	1973-04-24	Digital guard-time circuit for use in a frame synchronization circuit
US2580093A (en)	1951-12-25	Call data recording telephone system
US2402700A (en)	1946-06-25	Telephone system
US2294464A (en)	1942-09-01	Impulse transmitter
US2566330A (en)	1951-09-04	Metering arrangement for telephone systems
US2541936A (en)	1951-02-13	Register-sender for automatic telephone systems
US2519867A (en)	1950-08-22	Restricted service telephone system
US2892893A (en)	1959-06-30	Drop-back telephone selector
US2661396A (en)	1953-12-01	Line finder with differential test relay
US2513049A (en)	1950-06-27	Automatic combined coder and timed release telephone system
US3177290A (en)	1965-04-06	Local prepay paystation with delayed call provisions
US3157743A (en)	1964-11-17	Telephone call progress recording system
US1844111A (en)	1932-02-09	Telephone exchange system
US2748194A (en)	1956-05-29	Drop-back selector
US2897272A (en)	1959-07-28	Coin control telephone system
US2870263A (en)	1959-01-20	Radio or carrier terminal dial selector
US2579729A (en)	1951-12-25	Automatic telephone message accounting system
US2897277A (en)	1959-07-28	Zone prohibiting circuit
USRE19491E (en)	1935-03-05	stokely

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

Info

Links

Images

Classifications

Landscapes

Description

Priority Applications (1)

Applications Claiming Priority (1)

Publications (1)

Family

ID=24212749

Family Applications (1)

Country Status (1)

Cited By (4)

Citations (5)

Patent Citations (5)

Cited By (4)

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