GB183592A - Improvements in rheostats - Google Patents
Improvements in rheostatsInfo
- Publication number
- GB183592A GB183592A GB1214521A GB1214521A GB183592A GB 183592 A GB183592 A GB 183592A GB 1214521 A GB1214521 A GB 1214521A GB 1214521 A GB1214521 A GB 1214521A GB 183592 A GB183592 A GB 183592A
- Authority
- GB
- United Kingdom
- Prior art keywords
- commutator
- resistance
- brushes
- ventilating
- fan
- 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
- H01C10/46—Arrangements of fixed resistors with intervening connectors, e.g. taps
- H01C10/48—Arrangements of fixed resistors with intervening connectors, e.g. taps including contact movable in an arcuate path
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Dc Machiner (AREA)
- Motor Or Generator Current Collectors (AREA)
Abstract
183,592. North, N. E., and Metropolitan-Vickers Electrical Co., Ltd. April 27,1921. Controllers.-Relates to rheostats of the kind in which two contact brushes wipe continuously over a revolving structure like a commutator, having the bars connected to different points of a resistance, the brushes being separated or moved closer together in order to increase or decrease the effective resistance of the arrangement. According to the invention the revolving structure carrying the commutator bars 1, also comprises resistance elements 4 in the form of blades disposed to act as a ventilating-fan, air being drawn in axially through an opening 6 and blow cut radially through an opening 7 of a casing 5. The brushes 2, 3 which include maximum resistance in the position shown are caused to approach each other by means of gearing 16 driven through a clutch 20 from the commutator shaft 8. The apparatus may be used as a starter and ventilating-fan for a motor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1214521A GB183592A (en) | 1921-04-27 | 1921-04-27 | Improvements in rheostats |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1214521A GB183592A (en) | 1921-04-27 | 1921-04-27 | Improvements in rheostats |
Publications (1)
Publication Number | Publication Date |
---|---|
GB183592A true GB183592A (en) | 1922-07-27 |
Family
ID=9999150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1214521A Expired GB183592A (en) | 1921-04-27 | 1921-04-27 | Improvements in rheostats |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB183592A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3211891A (en) * | 1963-07-05 | 1965-10-12 | Mach & Electric | Thermal fan |
-
1921
- 1921-04-27 GB GB1214521A patent/GB183592A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3211891A (en) * | 1963-07-05 | 1965-10-12 | Mach & Electric | Thermal fan |
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