GB453459A - Improvements in telephone systems - Google Patents

Improvements in telephone systems

Info

Publication number
GB453459A
GB453459A GB18560/35A GB1856035A GB453459A GB 453459 A GB453459 A GB 453459A GB 18560/35 A GB18560/35 A GB 18560/35A GB 1856035 A GB1856035 A GB 1856035A GB 453459 A GB453459 A GB 453459A
Authority
GB
United Kingdom
Prior art keywords
bell
electric
struck
cam
new york
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
Application number
GB18560/35A
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.)
INTER OUTER TELEPHONE CORP
Original Assignee
INTER OUTER TELEPHONE CORP
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 INTER OUTER TELEPHONE CORP filed Critical INTER OUTER TELEPHONE CORP
Publication of GB453459A publication Critical patent/GB453459A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Electromechanical Clocks (AREA)
  • Telephone Set Structure (AREA)

Abstract

453,459. Electric bells. INTER-OUTER TELEPHONE CORPORATION, 222, West 23rd Street, New York, U.S.A.-(Assignees of Varley, R. ; 233, Broadway, New York, U.S.A.) June 28, 1935, No. 18560. Convention date, July 5, 1934. [Class 13] [See also Group XXXIX] A bell 55, Fig. 5, is struck at halfminute intervals by a cam 53 driven by an electric synchronous motor 52 to indicate when a telephone amplifier is connected to the mains. Alternatively, the lifting of arm 71 by switch 68, Fig. 8, frees one end 83 of a bell-crank lever, the other end of which then moves into the path of a cam on the second-hand arbor of an electric clock 76 whereby a bell is struck every half-minute.
GB18560/35A 1934-07-05 1935-06-28 Improvements in telephone systems Expired GB453459A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US733824A US2071053A (en) 1934-07-05 1934-07-05 Inter-outer telephone system

Publications (1)

Publication Number Publication Date
GB453459A true GB453459A (en) 1936-09-11

Family

ID=24949255

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18560/35A Expired GB453459A (en) 1934-07-05 1935-06-28 Improvements in telephone systems

Country Status (2)

Country Link
US (1) US2071053A (en)
GB (1) GB453459A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE950920C (en) * 1950-06-08 1956-10-18 John Charles Sydney Branson Amplifier device for placing a telephoner for the purpose of hands-free conversation

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE740119C (en) * 1938-08-25 1943-10-12 Siedle & Soehne Telefon U Tele Circuit arrangement for door loudspeaker systems
US2490709A (en) * 1945-11-05 1949-12-06 George J Rovnak Telephone holder and receiver lifter
US2500264A (en) * 1946-12-04 1950-03-14 Matthys L M Souget Handset support and inductive pickup for telephone signal amplifying system
US2531648A (en) * 1947-02-20 1950-11-28 George J Rovnak Combined remote control and extension for telephones
GB655927A (en) * 1947-12-22 1951-08-08 Keith Simmons Stanbury Improved telephone substation apparatus
US2575844A (en) * 1948-10-19 1951-11-20 Harry L Mckellops Feedback neutralization means for telephone systems
US2501212A (en) * 1948-11-30 1950-03-21 Fred L Cunow Receiver and transmitter telephone desk set
US2515883A (en) * 1948-12-18 1950-07-18 John T Meade Multiple telephone station call indicator and selective answering switch unit
US3156771A (en) * 1960-11-14 1964-11-10 Elijah J Vaughn Telephone loud-speaker combination
US3297824A (en) * 1963-04-15 1967-01-10 Nolte Albert C Jr Remote station intercommunication system
US3576401A (en) * 1968-02-26 1971-04-27 Itt Bridging units for terminating leased lines in telephone line circuits
US20090071462A1 (en) * 2007-09-15 2009-03-19 George Liu Barbecue Grill Transmission Device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE950920C (en) * 1950-06-08 1956-10-18 John Charles Sydney Branson Amplifier device for placing a telephoner for the purpose of hands-free conversation

Also Published As

Publication number Publication date
US2071053A (en) 1937-02-16

Similar Documents

Publication Publication Date Title
GB453459A (en) Improvements in telephone systems
GB511359A (en) Improvements in and relating to electric signalling apparatus
ES64737U (en) Electric bell of different shades (Machine-translation by Google Translate, not legally binding)
CA396371A (en) Permanent magnet alloy
ES6067U (en) Electric telegraph for toy. (Machine-translation by Google Translate, not legally binding)
AU113186B2 (en) Engine starting mechanism
CA401769A (en) Permanent magnet
CA386234A (en) Permanent magnet manufacture
CA401272A (en) Magnetic rotor
AU326640A (en) Engine starting mechanism
CA385999A (en) Engine governor
CA391936A (en) Permanent magnet
AU143716B2 (en) Engine starter
CA400129A (en) Compensating balance-wheel
CA396811A (en) Engine starter
CA398749A (en) Engine governor
CA398750A (en) Engine governor
CA401410A (en) Motor governor
AU114072B2 (en) Ignition coil
GB550682A (en) Alarm-clock electric switch
GB460496A (en) Improvements in and relating to devices for indicating current-interruptions in connection with synchronous-motor driven clocks
CA393135A (en) Electrical coil
CA432140A (en) Armature coil lead staking machine
CA392088A (en) Rotating dial clock
CA407011A (en) Resonator for telephone bells