GB233434A - Improvements in or relating to electric rheostats, switches and the like - Google Patents

Improvements in or relating to electric rheostats, switches and the like

Info

Publication number
GB233434A
GB233434A GB3422/24A GB342224A GB233434A GB 233434 A GB233434 A GB 233434A GB 3422/24 A GB3422/24 A GB 3422/24A GB 342224 A GB342224 A GB 342224A GB 233434 A GB233434 A GB 233434A
Authority
GB
United Kingdom
Prior art keywords
hub
arm
casing
relating
switches
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
GB3422/24A
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.)
JOHN HAROLD BRADLEY
Original Assignee
JOHN HAROLD BRADLEY
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 JOHN HAROLD BRADLEY filed Critical JOHN HAROLD BRADLEY
Priority to GB3422/24A priority Critical patent/GB233434A/en
Publication of GB233434A publication Critical patent/GB233434A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/14—Adjustable resistors adjustable by auxiliary driving means

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Adjustable Resistors (AREA)

Abstract

233,434. Bradley, J. H. Feb. 9, 1924. Variable resistances.-The casing of a rheostat &c. is rendered dust proof by providing the operating arm 2 which extends through the casing 19 with a cylindrical hub 9 which fits bearing surfaces 11 which are completely cylindrical at the end portions of the hub but are only arcuate, Fig. 4, at the middle portion of the hub where recesses 12 and 13 are cut away to allow of movement of the arm 2. The end of the arm 2 carries a laminated brush having its end bent outwards in two portions 5, 7 for making contact with a resistance wire 6 and a fixed contact plate 8.
GB3422/24A 1924-02-09 1924-02-09 Improvements in or relating to electric rheostats, switches and the like Expired GB233434A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3422/24A GB233434A (en) 1924-02-09 1924-02-09 Improvements in or relating to electric rheostats, switches and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3422/24A GB233434A (en) 1924-02-09 1924-02-09 Improvements in or relating to electric rheostats, switches and the like

Publications (1)

Publication Number Publication Date
GB233434A true GB233434A (en) 1925-05-11

Family

ID=9758025

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3422/24A Expired GB233434A (en) 1924-02-09 1924-02-09 Improvements in or relating to electric rheostats, switches and the like

Country Status (1)

Country Link
GB (1) GB233434A (en)

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