GB246325A - Improvements in variable electric resistances - Google Patents

Improvements in variable electric resistances

Info

Publication number
GB246325A
GB246325A GB434225A GB434225A GB246325A GB 246325 A GB246325 A GB 246325A GB 434225 A GB434225 A GB 434225A GB 434225 A GB434225 A GB 434225A GB 246325 A GB246325 A GB 246325A
Authority
GB
United Kingdom
Prior art keywords
ball
arm
graphite
coating
resistance
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
GB434225A
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 GB434225A priority Critical patent/GB246325A/en
Publication of GB246325A publication Critical patent/GB246325A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/28—Adjustable resistors the contact rocking or rolling along resistive element or taps

Abstract

246,325. Smith, J. F. Feb. 17, 1925. Variable resistances; resistance coatings. - A variable resistance, especially suited for use as a grid-leak is provided with a rolling contact formed by a ball or roller moved over the resistance unit by a moving arm. In the form shown the ball 22 rolls in a groove 5 in an insulating block 1. The groove 5 is lined with a coating 6 of graphite or similar material connected to terminals 4 at the ends of the block 1. The ball 22 makes contact with the coating 6 through a string 7 impregnated with graphite &c. The ball 22 is moved by an arm 19 on a spindle 15 with a milled head 16, being held in a slot 21 in a spring blade 20 disposed inside the arm 19. Specification 236.975 is referred to.
GB434225A 1925-02-17 1925-02-17 Improvements in variable electric resistances Expired GB246325A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB434225A GB246325A (en) 1925-02-17 1925-02-17 Improvements in variable electric resistances

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB434225A GB246325A (en) 1925-02-17 1925-02-17 Improvements in variable electric resistances

Publications (1)

Publication Number Publication Date
GB246325A true GB246325A (en) 1926-01-28

Family

ID=9775374

Family Applications (1)

Application Number Title Priority Date Filing Date
GB434225A Expired GB246325A (en) 1925-02-17 1925-02-17 Improvements in variable electric resistances

Country Status (1)

Country Link
GB (1) GB246325A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2700719A (en) * 1951-09-08 1955-01-25 Coler Potentiometer device
DE1073594B (en) * 1960-01-02 Hλτon A Coler New York N Y (V St A) Louis New York N Y (V St A)) Film variable resistor and method for its manufacture
US5570076A (en) * 1994-07-18 1996-10-29 Erickson; Bruce L. Variable resistance device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1073594B (en) * 1960-01-02 Hλτon A Coler New York N Y (V St A) Louis New York N Y (V St A)) Film variable resistor and method for its manufacture
US2700719A (en) * 1951-09-08 1955-01-25 Coler Potentiometer device
US5570076A (en) * 1994-07-18 1996-10-29 Erickson; Bruce L. Variable resistance device

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