GB520620A - Improvements in or relating to electric switch contact drums - Google Patents

Improvements in or relating to electric switch contact drums

Info

Publication number
GB520620A
GB520620A GB90539A GB90539A GB520620A GB 520620 A GB520620 A GB 520620A GB 90539 A GB90539 A GB 90539A GB 90539 A GB90539 A GB 90539A GB 520620 A GB520620 A GB 520620A
Authority
GB
United Kingdom
Prior art keywords
drum
relating
electric switch
switch contact
jan
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
GB90539A
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.)
THERMA FABRIK fur ELEK SCHE H
Original Assignee
THERMA FABRIK fur ELEK SCHE H
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 THERMA FABRIK fur ELEK SCHE H filed Critical THERMA FABRIK fur ELEK SCHE H
Publication of GB520620A publication Critical patent/GB520620A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D13/00—Processing apparatus or accessories therefor, not covered by groups G11B3/00 - G11B11/00
    • G03D13/02—Containers; Holding-devices
    • G03D13/04—Trays; Dishes; Tanks ; Drums
    • G03D13/046—Drums; Films convolutely fixed on the side of the drum
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/02—Details
    • H01H19/10—Movable parts; Contacts mounted thereon

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Adjustable Resistors (AREA)

Abstract

520,620. Switch contacts. THERMA FABRIK FUR ELEKTRISCHE HEIZUNG AKT.-GES. Jan. 11, 1939, 905. Convention date Jan. 17, 1938. [Class 38 (v)] An insulating contact drum 1 has contacts such as 8 mounted on its surface by being sprung on, the turned round ends 6 engaging recesses 7 in the drum. This avoids the use of fastening means passing through the drum, and leaves a central recess 3 clear for the operating spindle. Fig. 4 shows a contact member made in two' layers 9, 10, one being of good resilient material, the other being of good conducting material. The projections 11 are adapted to snap into recesses in the drum.
GB90539A 1938-01-17 1939-01-11 Improvements in or relating to electric switch contact drums Expired GB520620A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH204359T 1938-01-17

Publications (1)

Publication Number Publication Date
GB520620A true GB520620A (en) 1940-04-29

Family

ID=42104732

Family Applications (1)

Application Number Title Priority Date Filing Date
GB90539A Expired GB520620A (en) 1938-01-17 1939-01-11 Improvements in or relating to electric switch contact drums

Country Status (2)

Country Link
CH (1) CH204359A (en)
GB (1) GB520620A (en)

Also Published As

Publication number Publication date
CH204359A (en) 1939-04-30

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