GB512650A - Improvements in and relating to rheostats or potentiometers - Google Patents
Improvements in and relating to rheostats or potentiometersInfo
- Publication number
- GB512650A GB512650A GB20997/39A GB2099739A GB512650A GB 512650 A GB512650 A GB 512650A GB 20997/39 A GB20997/39 A GB 20997/39A GB 2099739 A GB2099739 A GB 2099739A GB 512650 A GB512650 A GB 512650A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistance
- contact
- resistance strip
- terminal
- strip
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/30—Adjustable resistors the contact sliding along resistive element
- H01C10/32—Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Adjustable Resistors (AREA)
Abstract
512,650. Variable resistances. INTERNATIONAL RESISTANCE CO. Jan. 7, 1938, No. 20997/39. Convention date, Jan. 7, 1937. Divided out of 511,178. [Class 37] A variable resistance or potentiometer particularly for use as a volume control for radio apparatus comprises an insulating support 43, Fig. 2, with inner portions 46, 47 and a narrow annular coating 80, e.g., one-eighth, of an inch wide, of resistance ink, with which engages a sliding contact formed with a number of individual contact arms 61, Fig. 6, of phosphor bronze wire of circular cross section bent to a curve at the point 61a at which they engage the resistance strip so as to provide point contact between each contact finger and the resistance strip. These wires are clamped at one end by a strap 59b on a rotatable insulating arm 39 and are free to move vertically at their other ends. The ends of the resistance strip are of high and low potential and are connected to terminals 27, 28 respectively. The sliding contact is connected to a third terminal 29 by means of a coil 58 of spring wire having a substantial number of turns. Riveted to the centre terminal 28 is a member 38 which is bent down at one end 38a so as to make contact with the low potential end of the resistance strip. The member 38 has also a raised portion 38c which extends over the head of the rivet 36 that secures the terminal 27 to the high potential end of the resistance, so as to serve as an electrostatic shield between this and the sliding contact. Points on the resistance strip are connected by ribbons 50, 51 of highly conductive coating material to rivets 41, 40 situated in the portions 46, 47 of the support within the resistance ring 80. These rivets secure and make contact with terminals 26, 25. Specification 511,178 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US512650XA | 1937-01-07 | 1937-01-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB512650A true GB512650A (en) | 1939-09-21 |
Family
ID=21970252
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB20997/39A Expired GB512650A (en) | 1937-01-07 | 1938-01-07 | Improvements in and relating to rheostats or potentiometers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB512650A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115362515A (en) * | 2020-03-30 | 2022-11-18 | 东京Cosmos电机株式会社 | Movable contact, variable resistor, and method for manufacturing movable contact |
-
1938
- 1938-01-07 GB GB20997/39A patent/GB512650A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115362515A (en) * | 2020-03-30 | 2022-11-18 | 东京Cosmos电机株式会社 | Movable contact, variable resistor, and method for manufacturing movable contact |
CN115362515B (en) * | 2020-03-30 | 2024-01-09 | 东京Cosmos电机株式会社 | Movable contact, variable resistor, and method for manufacturing movable contact |
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