GB1108596A - Improvements in thermostatically operated electric switches - Google Patents

Improvements in thermostatically operated electric switches

Info

Publication number
GB1108596A
GB1108596A GB3186664A GB3186664A GB1108596A GB 1108596 A GB1108596 A GB 1108596A GB 3186664 A GB3186664 A GB 3186664A GB 3186664 A GB3186664 A GB 3186664A GB 1108596 A GB1108596 A GB 1108596A
Authority
GB
United Kingdom
Prior art keywords
rod
contacts
thermostat
elements
contact
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
GB3186664A
Inventor
Antony Ernest Chapman
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.)
PROCESS CONTROL GEAR Ltd
Original Assignee
PROCESS CONTROL GEAR Ltd
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 PROCESS CONTROL GEAR Ltd filed Critical PROCESS CONTROL GEAR Ltd
Priority to GB3186664A priority Critical patent/GB1108596A/en
Publication of GB1108596A publication Critical patent/GB1108596A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/46—Thermally-sensitive members actuated due to expansion or contraction of a solid
    • H01H37/48—Thermally-sensitive members actuated due to expansion or contraction of a solid with extensible rigid rods or tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/04—Bases; Housings; Mountings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/002—Thermally-actuated switches combined with protective means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

1,108,596. Thermal switches. PROCESS CONTROL GEAR Ltd. 30 July, 1965 [5 Aug., 1964], No. 31866/64. Heading H1N. In a snap-action thermostat of the rod-andtube type the contact elements are insulatingly mounted in a stack in which insulating blocks 8, 9, 10, 11, alternate with metal contact or terminal elements 12, 13, 14, each having a non-circular aperture into which a projection on an adjacent block fits (Figs. 4-6, not shown), and a screw 18 holds the stack together and secures it to the base-plate 1 of the thermostat. The operating temperature is adjusted by a knob 26 rotating a sleeve 24 secured to a yoke member 4 attached to the rod 3. A further screw 25 is adjustable to vary pressure on the, switch blade 5. The main contacts 6, 15 are in circuit with auxiliary contacts (36), (38), (Figs. 10, 11, not shown), controlled by a fusible element holding a rod (43) so as to keep contacts (36), (38) closed against the force of spring strip (35). Excessively high temperature melts the fusible element and spring strip (35) separates contacts (36), (38), as it pushes rod (43) away. The contact elements 12, 13, 14, are exchangeable for elements (123), (143), (Figs. 8, 9 and 13-15, not shown) to make the thermostat a normally open switch. Fixed contact (143c) is adjustable.
GB3186664A 1964-08-05 1964-08-05 Improvements in thermostatically operated electric switches Expired GB1108596A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3186664A GB1108596A (en) 1964-08-05 1964-08-05 Improvements in thermostatically operated electric switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3186664A GB1108596A (en) 1964-08-05 1964-08-05 Improvements in thermostatically operated electric switches

Publications (1)

Publication Number Publication Date
GB1108596A true GB1108596A (en) 1968-04-03

Family

ID=10329571

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3186664A Expired GB1108596A (en) 1964-08-05 1964-08-05 Improvements in thermostatically operated electric switches

Country Status (1)

Country Link
GB (1) GB1108596A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2290910A (en) * 1994-07-01 1996-01-10 Diamond H Controls Ltd A thermostat
GB2295490A (en) * 1994-11-23 1996-05-29 Diamond H Controls Ltd Thermostat
GB2317502A (en) * 1996-09-20 1998-03-25 Sunvic Controls Ltd Thermostat

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2290910A (en) * 1994-07-01 1996-01-10 Diamond H Controls Ltd A thermostat
GB2295490A (en) * 1994-11-23 1996-05-29 Diamond H Controls Ltd Thermostat
GB2317502A (en) * 1996-09-20 1998-03-25 Sunvic Controls Ltd Thermostat
GB2317502B (en) * 1996-09-20 1998-09-02 Sunvic Controls Ltd Thermostat

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