GB598122A - Improvements in wire-wound variable electrical resistances - Google Patents
Improvements in wire-wound variable electrical resistancesInfo
- Publication number
- GB598122A GB598122A GB2232945A GB2232945A GB598122A GB 598122 A GB598122 A GB 598122A GB 2232945 A GB2232945 A GB 2232945A GB 2232945 A GB2232945 A GB 2232945A GB 598122 A GB598122 A GB 598122A
- Authority
- GB
- United Kingdom
- Prior art keywords
- roller
- mandrel
- bight
- wire
- 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
Links
- 239000002184 metal Substances 0.000 abstract 2
- 239000011810 insulating material Substances 0.000 abstract 1
- 230000003287 optical Effects 0.000 abstract 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Forwarding And Storing Of Filamentary Material (AREA)
- Wire Processing (AREA)
Abstract
598,122. Variable-contact resistances. UNITED KINGDOM OPTICAL CO., Ltd., and MOORE, A. A. S. Aug. 30, 1945, No. 22329. [Class 37] A rheostat comprises a length of resistance wire or tape wound on an insulating mandrel with a bight looped over a conducting bar or roller means being provided for rotating the mandrel so that the bight in contact with the bar or roller may be moved continuously from one end of the wire to the other. A mandrel 7 of insulating material is fixed on a spindle 3 which is mounted in bearings in a metal frame 2 and carries a knob 5. The mandrel 7 has a helical groove in which is wound a resistance strip 8, of which one end is connected to a metal flange 9 and the other is fixed to the mandrel 7. A contact roller 10 is journalled in arms 11 mounted on a spindle 12. This is pivoted in brackets 13 fixed to the base-board 1 out of contact with the frame 2, the roller 10 being urged downwards by a spring (not shown). The resistance strip 8 is given a turn over the roller 10, as shown. Insulating pads 16 are attached to the horizontal part of the frame 2 to prevent the roller 10 from making contact if the resistance strip should break. As the spindle 3 is rotated by the knob 5 the bight of resistance strip under the roller 10 moves continuously so that the resistance is varied without steps. The mandrel may be tapered instead of cylindrical to provide a desired relationship between the resistance in circuit and the position of the bight. The roller 10 may be replaced by a stationary bar with a screw-thread, the bight of wire being passed over a guide roller which travels along the bar as a nut when rotated by the movement of the wire. According to the Provisional Specification the mandrel may be fixed and the conducting bar or roller may revolve around it.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB598122A true GB598122A (en) | 1948-02-11 |
Family
ID=1736887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2232945A Expired GB598122A (en) | 1945-08-30 | Improvements in wire-wound variable electrical resistances |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB598122A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2662150A (en) * | 1952-01-15 | 1953-12-08 | Technology Instr Corp | Continuously variable resistor |
| US2899661A (en) * | 1959-08-11 | Grueretal |
-
1945
- 1945-08-30 GB GB2232945A patent/GB598122A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2899661A (en) * | 1959-08-11 | Grueretal | ||
| US2662150A (en) * | 1952-01-15 | 1953-12-08 | Technology Instr Corp | Continuously variable resistor |
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