GB370533A - Improvements in temperature control apparatus - Google Patents

Improvements in temperature control apparatus

Info

Publication number
GB370533A
GB370533A GB2151/31A GB215131A GB370533A GB 370533 A GB370533 A GB 370533A GB 2151/31 A GB2151/31 A GB 2151/31A GB 215131 A GB215131 A GB 215131A GB 370533 A GB370533 A GB 370533A
Authority
GB
United Kingdom
Prior art keywords
thermostat
adjusted
variable resistance
movement
thermostats
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
GB2151/31A
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
Application filed by Individual filed Critical Individual
Priority to GB2151/31A priority Critical patent/GB370533A/en
Publication of GB370533A publication Critical patent/GB370533A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/275—Control of temperature characterised by the use of electric means with sensing element expanding, contracting, or fusing in response to changes of temperature
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1902—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value
    • G05D23/1904—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value variable in time

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Thermally Actuated Switches (AREA)
  • Relay Circuits (AREA)

Abstract

370,533. Thermostats. STEWART, A. W., 150, Helen Street, Govan, Glasgow. Jan. 22, 1931, No. 2151. [Class 135.] A thermostat is adjusted from a distance by an electrically-operated movement, and a variable resistance controlled by the movement is in circuit with an ammeter at the control point whereby the setting of the thermostat is indicated. A thermostat 1 is adjusted by levers 5, 6 carrying pawls 7 engaging a ratchet wheel 4 which operates the thermostat through gearing 3, 2. The levers 5, 6 are actuated selectively from a remote point by electromagnets 8, 8<1>, when switches 14 or 15 are closed according to the direction in which the thermostat is to be adjusted. A variable resistance 11 controlled by the thermostat movement is in series with an ammeter 12 which is caused to register to indicate the thermostat setting, by closing a switch 16. A variable resistance 18 is provided by which the apparatus may be adjusted to suit the supply voltage. The thermostat may be adjusted locally by hand by rotating the ratchet wheel 4 and may control a relay 23 to operate valves. Means may be provided whereby the apparatus may be connected to any one of a number of thermostats.
GB2151/31A 1931-01-22 1931-01-22 Improvements in temperature control apparatus Expired GB370533A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2151/31A GB370533A (en) 1931-01-22 1931-01-22 Improvements in temperature control apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2151/31A GB370533A (en) 1931-01-22 1931-01-22 Improvements in temperature control apparatus

Publications (1)

Publication Number Publication Date
GB370533A true GB370533A (en) 1932-04-14

Family

ID=9734498

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2151/31A Expired GB370533A (en) 1931-01-22 1931-01-22 Improvements in temperature control apparatus

Country Status (1)

Country Link
GB (1) GB370533A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2448170A (en) * 1944-03-10 1948-08-31 Dole Valve Co Mixer valve and control
US2489896A (en) * 1944-07-17 1949-11-29 Dole Valve Co Mixer valve and control
US2782993A (en) * 1945-12-13 1957-02-26 William H Appleton Automatic control system with remote adjustment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2448170A (en) * 1944-03-10 1948-08-31 Dole Valve Co Mixer valve and control
US2489896A (en) * 1944-07-17 1949-11-29 Dole Valve Co Mixer valve and control
US2782993A (en) * 1945-12-13 1957-02-26 William H Appleton Automatic control system with remote adjustment

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