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GB515602A - Improvements relating to thermally-operated overload relays - Google Patents

Improvements relating to thermally-operated overload relays

Info

Publication number
GB515602A
GB515602A GB1836138A GB1836138A GB515602A GB 515602 A GB515602 A GB 515602A GB 1836138 A GB1836138 A GB 1836138A GB 1836138 A GB1836138 A GB 1836138A GB 515602 A GB515602 A GB 515602A
Authority
GB
United Kingdom
Prior art keywords
spindle
thermally
solder
improvements relating
carrying
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
GB1836138A
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 GB1836138A priority Critical patent/GB515602A/en
Publication of GB515602A publication Critical patent/GB515602A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/20—Electrothermal mechanisms with fusible mass
    • H01H71/205—Electrothermal mechanisms with fusible mass using a ratchet wheel kept against rotation by solder

Landscapes

  • Fuses (AREA)

Abstract

515,602. Thermal switches. DONOVAN, G. O. June 21, 1938, No. 18361. [Class 38 (v)] In a thermally-operated overload circuitbreaker a spindle b carries a screw b' the head of which is gripped by solder in a recess a' so as to prevent rotation of the spindle until the solder has been melted by a heating coil, not shown, carrying the overload current. When the spindle is so freed an arm d, carrying a pawl d' which engages a ratchet wheel b', moves under the action of a spring e to open the contacts. When the spindle b is again held fast by solder, the ratchet mechanism allows resetting. Specification 513,059 is referred to.
GB1836138A 1938-06-21 1938-06-21 Improvements relating to thermally-operated overload relays Expired GB515602A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1836138A GB515602A (en) 1938-06-21 1938-06-21 Improvements relating to thermally-operated overload relays

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1836138A GB515602A (en) 1938-06-21 1938-06-21 Improvements relating to thermally-operated overload relays

Publications (1)

Publication Number Publication Date
GB515602A true GB515602A (en) 1939-12-08

Family

ID=10111143

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1836138A Expired GB515602A (en) 1938-06-21 1938-06-21 Improvements relating to thermally-operated overload relays

Country Status (1)

Country Link
GB (1) GB515602A (en)

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