GB756759A - Means for controlling telephone answering devices - Google Patents

Means for controlling telephone answering devices

Info

Publication number
GB756759A
GB756759A GB5105/54A GB510554A GB756759A GB 756759 A GB756759 A GB 756759A GB 5105/54 A GB5105/54 A GB 5105/54A GB 510554 A GB510554 A GB 510554A GB 756759 A GB756759 A GB 756759A
Authority
GB
United Kingdom
Prior art keywords
motor
button
tape
talk
amplifier
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
GB5105/54A
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.)
Individual
Original Assignee
Individual
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 GB28939/53A priority Critical patent/GB756959A/en
Application filed by Individual filed Critical Individual
Priority to GB5105/54A priority patent/GB756759A/en
Priority to US459204A priority patent/US2911368A/en
Priority to NL191678A priority patent/NL89954C/xx
Priority to DEST8887A priority patent/DE961283C/en
Priority to FR1110221D priority patent/FR1110221A/en
Publication of GB756759A publication Critical patent/GB756759A/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
    • H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
    • H04M1/65—Recording arrangements for recording a message from the calling party
    • H04M1/6515—Recording arrangements for recording a message from the calling party using magnetic tape
    • C—CHEMISTRY; METALLURGY
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    • C10M3/00—Liquid compositions essentially based on lubricating components other than mineral lubricating oils or fatty oils and their use as lubricants; Use as lubricants of single liquid substances
    • C—CHEMISTRY; METALLURGY
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
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    • C10M2207/025—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with condensed rings
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    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
    • C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
    • C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
    • C10M2219/106—Thiadiazoles
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
    • C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
    • C10M2219/108—Phenothiazine
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/08—Resistance to extreme temperature
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/12—Gas-turbines
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/12—Gas-turbines
    • C10N2040/13—Aircraft turbines

Abstract

756,759. Substation circuits. DEVENTER, H. R. VAN. Feb. 22, 1954, No. 5105/54. Class 40(4). Control mechanism responds to ringing current to deliver a talk-out message from a first recorder to the calling line, the end of the message operating a switch to connect a second recorder to the line to receive a message from the calling party for a predetermined time. Recording the talk-out message. Depression of button 20 energizes amplifier 21 and connects its output 21b to transducer 27. Button 20 also energizes talk-out driving motor 23 and timer motor 42. The telephone transmitter 28 may now be used as a microphone for recording a message on tape 24. Release of button 20 and depression of button 30 reverses motor 23 to rewind the tape. Playing back the talk-out message. Operation of button 32 energizes motor 23 and timer motor 42 and connects transducer 27 to the input of the amplifier and the T1 side of the telephone instrument to the output. Timing device 31 moves with the tape 24. At the end of the talk-out message push-button 32 is restored and contacts 37 are moved manually to the left so as to be closed by contact with carriage 35, neon lamp 38 lighting. Depression of key 30 restores the tape 24 and the timer 31. When the carriage 35 reaches home position it opens switch 36 to stop the motor 23. Answering incoming calls and taking a message from the calling party. Operation of button 40 sets up a circuit to a motor-driven timer 41 which controls the duration of the answering cycle. Contacts 40-3 connect lead L1 of the telephone line to the output side of the amplifier. When a call is received relay 47 energizes to energize timer motor 42 at each pulse of ringing current until cam 43 operates switches 45, which return ground to lead L2, energize amplifier 21, operate the supervisory relay at the exchange, and energize timer motor 42 continuously. Contacts 45-4 also energize motor 23 to drive the talk-out tape 24 and timer 31. At the end of the talk-out message, contacts 37 close to energize mid-cycle relay 46, which energizes motor 53 to drive the messagetaking tape 54 and reverses motor 23 to rewind the talk-out tape 24. Relay 46 also reverses the input and output of the amplifier so that speech on the line is recorded on tape 54. A cam 59 driven by motor 53 periodically supplies busy tone to the line. When cam 43 completes its revolution, switches 45 open to reset the circuit for another call. Playing back recorded messages. Button 64 is depressed to return tape 54 to starting position. Depression of button 64 then drives tape 54 in the forward direction and makes appropriate connections to the amplifier. Permanent magnets 67, 65 can be manually swivelled to clear the tapes 24, 54. Recording a two-way conversation. Depression of button 68 grounds lead L-2, connects lead L-1 and side T-1 of the telephone instrument to the input of the amplifier, and operates relay 46 to energize motor 53. Relay 46 also connects transducer 57 to the output of the amplifier. Cam 59 periodically impresses a tone signal on the line during the recording. Recording locally using the telephone transmitter as microphone. Depression of key 69 energizes relay 46 so that speech into the microphone is recorded on tape 54. Normal telephone operation. Depression of button 70 connects the telephone instrument to line in the normal manner.
GB5105/54A 1953-10-20 1954-02-22 Means for controlling telephone answering devices Expired GB756759A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB28939/53A GB756959A (en) 1953-10-20 1953-10-20 Synthetic lubricants
GB5105/54A GB756759A (en) 1953-10-20 1954-02-22 Means for controlling telephone answering devices
US459204A US2911368A (en) 1953-10-20 1954-09-29 Low temperature stability of synthetic lubricants
NL191678A NL89954C (en) 1953-10-20 1954-10-20
DEST8887A DE961283C (en) 1953-10-20 1954-10-20 Process for stabilizing the low temperature viscosity of synthetic lubricating oils
FR1110221D FR1110221A (en) 1953-10-20 1954-10-20 Synthetic lubricants

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB28939/53A GB756959A (en) 1953-10-20 1953-10-20 Synthetic lubricants
GB5105/54A GB756759A (en) 1953-10-20 1954-02-22 Means for controlling telephone answering devices

Publications (1)

Publication Number Publication Date
GB756759A true GB756759A (en) 1956-09-12

Family

ID=26239637

Family Applications (2)

Application Number Title Priority Date Filing Date
GB28939/53A Expired GB756959A (en) 1953-10-20 1953-10-20 Synthetic lubricants
GB5105/54A Expired GB756759A (en) 1953-10-20 1954-02-22 Means for controlling telephone answering devices

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB28939/53A Expired GB756959A (en) 1953-10-20 1953-10-20 Synthetic lubricants

Country Status (5)

Country Link
US (1) US2911368A (en)
DE (1) DE961283C (en)
FR (1) FR1110221A (en)
GB (2) GB756959A (en)
NL (1) NL89954C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7992850B2 (en) 2007-03-29 2011-08-09 Caterpillar Inc. System and method for controlling electromagnet lift power for material handlers

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE596980A (en) * 1959-11-11
US3920568A (en) * 1972-04-26 1975-11-18 Exxon Research Engineering Co Synthetic ester lubricant compositions with improved ryder gear load-carrying ability
US3912771A (en) * 1972-08-11 1975-10-14 Rohm & Haas Alkyl ammonium carboxylate salt-ethoxylated alkyl phenol esters of a dimer or trimer acid
US3998862A (en) * 1973-07-16 1976-12-21 Rohm And Haas Company Alkyl ammonium carboxylite salt-ethoxylated alkyl phenol esters
US4079012A (en) * 1976-10-04 1978-03-14 Bosniack David S Synthetic ester oil compositions containing organic sulfonic acid ammonium salts as load-carrying agents
US4295982A (en) * 1980-05-12 1981-10-20 Mobil Oil Corporation Sulfurized aminoguanidine reaction product and lubricant compositions containing same
US4919833A (en) * 1987-05-21 1990-04-24 Ciba-Geigy Corporation Functional fluids
US4902437A (en) * 1987-12-09 1990-02-20 Exxon Research And Engineering Company Engine lubricating oil comprising a quaternary ammonium hydroxide
US5124054A (en) * 1988-12-29 1992-06-23 Exxon Research And Engineering Company Method of improving the thermal stability of quaternary ammonium hydroxides (PNE-539)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2620301A (en) * 1950-12-09 1952-12-02 Standard Oil Co Grease compositions
US2636858A (en) * 1951-06-07 1953-04-28 Standard Oil Dev Co Mineral oil additive

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7992850B2 (en) 2007-03-29 2011-08-09 Caterpillar Inc. System and method for controlling electromagnet lift power for material handlers

Also Published As

Publication number Publication date
FR1110221A (en) 1956-02-09
DE961283C (en) 1957-04-04
US2911368A (en) 1959-11-03
GB756959A (en) 1956-09-12
NL89954C (en) 1959-01-15

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