GB509866A - Improvements in or relating to devices for the selective remote control of independent mechanisms - Google Patents

Improvements in or relating to devices for the selective remote control of independent mechanisms

Info

Publication number
GB509866A
GB509866A GB18832/38A GB1883238A GB509866A GB 509866 A GB509866 A GB 509866A GB 18832/38 A GB18832/38 A GB 18832/38A GB 1883238 A GB1883238 A GB 1883238A GB 509866 A GB509866 A GB 509866A
Authority
GB
United Kingdom
Prior art keywords
valve
remote control
impulses
relating
devices
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
GB18832/38A
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.)
ANONIMA FIMI SOC
Original Assignee
ANONIMA FIMI SOC
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 ANONIMA FIMI SOC filed Critical ANONIMA FIMI SOC
Publication of GB509866A publication Critical patent/GB509866A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/14—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings operated by auxiliary power

Landscapes

  • Selective Calling Equipment (AREA)

Abstract

509,866. Electric control systems; valve generating circuits. SOC. ANON. FIMI. June 24, 1938, No. 18832. Convention date, July 21, 1937. Drawings to Specification. [Class 40 (i)] [Also in Group XL] In a system employing trains of impulses of modulated carrier current to effect remote control of a number of apparatus, the transmitter comprises an oscillating valve in which modulation is effected by the use of a grid resistance of sufficiently high value, a commutator allowing the selection from a number of resistances to give different modulation frequencies. 'The trains of impulses may be generated under the control of a switch in the anode circuit of the valve. At the receiver, after demodulation, the signals are filtered and each frequency affects its corresponding relay or servomotor.
GB18832/38A 1937-07-21 1938-06-24 Improvements in or relating to devices for the selective remote control of independent mechanisms Expired GB509866A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT509866X 1937-07-21

Publications (1)

Publication Number Publication Date
GB509866A true GB509866A (en) 1939-07-24

Family

ID=11274189

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18832/38A Expired GB509866A (en) 1937-07-21 1938-06-24 Improvements in or relating to devices for the selective remote control of independent mechanisms

Country Status (1)

Country Link
GB (1) GB509866A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2496975A (en) * 1945-04-17 1950-02-07 Premier Crystal Lab Inc Temperature responsive piezo-electric crystal oscillator
US2554329A (en) * 1944-07-20 1951-05-22 Hammond Instr Co Remote-control apparatus
US2645771A (en) * 1945-04-18 1953-07-14 Standard Telephones Cables Ltd Pulsed radio remote-control system
US2683869A (en) * 1945-09-21 1954-07-13 William C Norris Automatic communication system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2554329A (en) * 1944-07-20 1951-05-22 Hammond Instr Co Remote-control apparatus
US2496975A (en) * 1945-04-17 1950-02-07 Premier Crystal Lab Inc Temperature responsive piezo-electric crystal oscillator
US2645771A (en) * 1945-04-18 1953-07-14 Standard Telephones Cables Ltd Pulsed radio remote-control system
US2683869A (en) * 1945-09-21 1954-07-13 William C Norris Automatic communication system

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