GB354020A - Improvements in and relating to electrothermally operated electric vacuum switches - Google Patents

Improvements in and relating to electrothermally operated electric vacuum switches

Info

Publication number
GB354020A
GB354020A GB19989/30A GB1998930A GB354020A GB 354020 A GB354020 A GB 354020A GB 19989/30 A GB19989/30 A GB 19989/30A GB 1998930 A GB1998930 A GB 1998930A GB 354020 A GB354020 A GB 354020A
Authority
GB
United Kingdom
Prior art keywords
wire
wires
contacts
contact
spring
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
GB19989/30A
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.)
Scherbius & Ritter
Original Assignee
Scherbius & Ritter
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 Scherbius & Ritter filed Critical Scherbius & Ritter
Publication of GB354020A publication Critical patent/GB354020A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00Thermally-actuated switches
    • H01H37/02Details
    • H01H37/32Thermally-sensitive members
    • H01H37/46Thermally-sensitive members actuated due to expansion or contraction of a solid
    • H01H37/50Thermally-sensitive members actuated due to expansion or contraction of a solid with extensible wires under tension

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

354,020. Thermal switches. SCHERBIUS & RITTER KOMMANDIT-GES., 40, Konigstrasse, Wannsee, Berlin. July 1, 1930, No. 19989. Convention date, July 1, 1929. [Class 38 (v).] Cases.-Wires or strips arranged in parallel mechanically (so that their pulling forces are added together) and in series electrically are arranged within a vessel which is evacuated or filled with inert gas and serve to operate contacts also located in the vessel. In the construction shown in Fig. 1, the wire is wound round two insulating rollers 8 each of which may be divided into a series of small rollers. The lower roller is secured to the contact member 1 which carries the contact 2 and the upper one is mounted for slight upward and downward movement in a frame 12 moving on a fixed pin 29. The companion contact 5 is carried by a spring arm 4 which bears upon the frame 12 and keeps the wire taut. The wire becomes heated when a current flows in it and expands so that the spring arm 4 is able to rise and withdraw its contact 5. When the circuit is broken the wire contacts and circuit is made again so that the device serves as a continuous interrupter. In a modified construction, the wire is wound in zig-zag form concentrically round two contacts which under the action of a spring separate when the wire expands due to the current carried by it. A tubular insulating arcbarrier may be arranged between the wires and the contacts. In another form, Fig. 3, the wires 19 are arranged in diamond form with the spring arms carrying the contacts 27, 28 serving to keep the wires taut. Alternatively the wire structure may act on a lever which, when the wires contract, raise the movable contact from the fixed contact.
GB19989/30A 1929-07-01 1930-07-01 Improvements in and relating to electrothermally operated electric vacuum switches Expired GB354020A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE354020X 1929-07-01
DE385283X 1930-03-18

Publications (1)

Publication Number Publication Date
GB354020A true GB354020A (en) 1931-08-06

Family

ID=31888927

Family Applications (2)

Application Number Title Priority Date Filing Date
GB19989/30A Expired GB354020A (en) 1929-07-01 1930-07-01 Improvements in and relating to electrothermally operated electric vacuum switches
GB8231/31A Expired GB385283A (en) 1929-07-01 1931-03-17 Improvements in or relating to electrothermic switches

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB8231/31A Expired GB385283A (en) 1929-07-01 1931-03-17 Improvements in or relating to electrothermic switches

Country Status (4)

Country Link
US (1) US1923509A (en)
BE (1) BE377134A (en)
FR (1) FR698135A (en)
GB (2) GB354020A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2644870A (en) * 1951-04-14 1953-07-07 Ira E Mccabe Electric switch of the mercury type
US2809253A (en) * 1952-11-28 1957-10-08 G V Controls Inc Electrical control devices
US3025373A (en) * 1956-08-29 1962-03-13 Bryant Electric Co Relay
US3004129A (en) * 1958-07-14 1961-10-10 Sunbeam Corp Thermal responsive device
US3127489A (en) * 1962-04-16 1964-03-31 Frank J Wallace Thermally responsive switch
US3493910A (en) * 1966-12-16 1970-02-03 Penn Controls Hot wire type spring motor actuator for switches

Also Published As

Publication number Publication date
BE377134A (en)
US1923509A (en) 1933-08-22
FR698135A (en) 1931-01-27
GB385283A (en) 1932-12-22

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