GB556618A - Improvements in or relating to electric fuse elements - Google Patents

Improvements in or relating to electric fuse elements

Info

Publication number
GB556618A
GB556618A GB473542A GB473542A GB556618A GB 556618 A GB556618 A GB 556618A GB 473542 A GB473542 A GB 473542A GB 473542 A GB473542 A GB 473542A GB 556618 A GB556618 A GB 556618A
Authority
GB
United Kingdom
Prior art keywords
main portion
strip
notches
length
point
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
GB473542A
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.)
WILLIAM WILSON MARTIN
A Reyrolle and Co Ltd
Original Assignee
WILLIAM WILSON MARTIN
A Reyrolle and Co 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 WILLIAM WILSON MARTIN, A Reyrolle and Co Ltd filed Critical WILLIAM WILSON MARTIN
Priority to GB473542A priority Critical patent/GB556618A/en
Publication of GB556618A publication Critical patent/GB556618A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/05—Component parts thereof
    • H01H85/055—Fusible members
    • H01H85/06—Fusible members characterised by the fusible material

Landscapes

  • Fuses (AREA)

Abstract

556,618. Electric cut-outs. REYROLLE & CO., Ltd., A., MARTIN, W. W., THOMAS, J. A., and GROOM, F. H. April 10, 1942, No. 4735. [Class 38 (i)] A fusible element comprises a main portion consisting of one or more strips of metal having a high melting-point, such as silver, and a localized body which has only a small calorific capacity and is connected to the main portion without the application of heat, as by being clipped or wound thereon, and in a manner which prevents longitudinal movement between the main portion and the localized body. The main portion may consist of a single silver strip A, Fig. 1, provided about midway of its length with two opposed notches B, and a strip of low melting-point metal such as pure tin may be wrapped around the reduced portion between the notches. If desired, additional notches D are provided and low-melting point strip may be wrapped around one or more of these additional narrowed portions. In another construction, the main portion may consist of two similar wires A<SP>1</SP>, Fig. 2, which have their ends spaced apart and secured to terminals E. The two wires are drawn together, about midway of their length, by being wrapped with a short length C<SP>1</SP> of tin wire. Two or more of the fusible elements may be joined in parallel with their ends in a suitable holder which may be of the cartridge type.
GB473542A 1942-04-10 1942-04-10 Improvements in or relating to electric fuse elements Expired GB556618A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB473542A GB556618A (en) 1942-04-10 1942-04-10 Improvements in or relating to electric fuse elements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB473542A GB556618A (en) 1942-04-10 1942-04-10 Improvements in or relating to electric fuse elements

Publications (1)

Publication Number Publication Date
GB556618A true GB556618A (en) 1943-10-13

Family

ID=9782806

Family Applications (1)

Application Number Title Priority Date Filing Date
GB473542A Expired GB556618A (en) 1942-04-10 1942-04-10 Improvements in or relating to electric fuse elements

Country Status (1)

Country Link
GB (1) GB556618A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2557926A (en) * 1949-03-01 1951-06-26 Chase Shawmut Co Time-delay electric fuse
US3569891A (en) * 1969-10-31 1971-03-09 Westinghouse Electric Corp Current limiting fuse

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2557926A (en) * 1949-03-01 1951-06-26 Chase Shawmut Co Time-delay electric fuse
US3569891A (en) * 1969-10-31 1971-03-09 Westinghouse Electric Corp Current limiting fuse

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