GB498562A - Improvements in electric relays operated by changes in humidity - Google Patents

Improvements in electric relays operated by changes in humidity

Info

Publication number
GB498562A
GB498562A GB3928/38A GB392838A GB498562A GB 498562 A GB498562 A GB 498562A GB 3928/38 A GB3928/38 A GB 3928/38A GB 392838 A GB392838 A GB 392838A GB 498562 A GB498562 A GB 498562A
Authority
GB
United Kingdom
Prior art keywords
lever
humidity
spring
hair
action
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
GB3928/38A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB498562A publication Critical patent/GB498562A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N19/00—Investigating materials by mechanical methods
    • G01N19/10—Measuring moisture content, e.g. by measuring change in length of hygroscopic filament; Hygrometers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F2003/144—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Telephone Set Structure (AREA)

Abstract

498,562. Actuation of switches. STANDARD TELEPHONES & CABLES, Ltd. Feb. 8, 1938, No. 3928. Convention date, Feb. 8, 1937. [Class 38 (v)] The variation in the length of a hygrometric material 4 due to changes in humidity, operates a switch with a snap-action. Levers 1 and 7 are mounted on pivot 2 and urged together by spring-pressed levers 9 and 10, and pivoted at 6 to a short arm of lever 1 is a member 5 to which is connected a tress of hair 4 which is anchored at the other end to an adjustable support with provision for setting. Contraction of the hair 4 with decrease in humidity rotates lever 1 against springs 13 and 11, lever 7 being held by a projection on crank 15 engaging a finger 23 thereon until arm 26 on lever 1 engages and the lever 15 to free lever 7 which is moved by spring 11 to carry boss 8 from its engagement with spring contacts 27 which then open with a snap-action. Increase in humidity lengthens the hair 4 and allows spring 13 to contract and close the contacts 27 with a similar snap-action.
GB3928/38A 1937-02-08 1938-02-08 Improvements in electric relays operated by changes in humidity Expired GB498562A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE498562X 1937-02-08

Publications (1)

Publication Number Publication Date
GB498562A true GB498562A (en) 1939-01-10

Family

ID=3870741

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3928/38A Expired GB498562A (en) 1937-02-08 1938-02-08 Improvements in electric relays operated by changes in humidity

Country Status (4)

Country Link
BE (1) BE419889A (en)
FR (1) FR833362A (en)
GB (1) GB498562A (en)
NL (1) NL48836C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114738903A (en) * 2021-12-28 2022-07-12 珠海格力电器股份有限公司 Filter screen forgets dress protection architecture and air purifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114738903A (en) * 2021-12-28 2022-07-12 珠海格力电器股份有限公司 Filter screen forgets dress protection architecture and air purifier

Also Published As

Publication number Publication date
NL48836C (en)
FR833362A (en) 1938-10-20
BE419889A (en)

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