GB291448A - - Google Patents
Info
- Publication number
- GB291448A GB291448A GB291448DA GB291448A GB 291448 A GB291448 A GB 291448A GB 291448D A GB291448D A GB 291448DA GB 291448 A GB291448 A GB 291448A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switch
- bell
- energized
- commutator
- temperature
- 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.)
- Active
Links
Abstract
291,448. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Vaughan, V. G.). June. 4, 1927, [Convention date]. Indicators and alarms, applications of; protection or safety devices, auxiliary.-A temperature indicating system for a dynamo-electric machine comprises a thermallyresponsive switch 41 disposed in thermal relation, with the armature. 18 and the switch is adapted to close the circuit of an electro-responsive indicating device such as a bell 36 energized from the armature winding, when a. predetermined temperature is reached. The switch is secured to the rotor spider 17 in proximity to the end windings 19, 21 which are usually at the maximum temperature and the bell is mounted on an arm 27 projecting from the rotor spider 17 and bolted to the spokes 22 of the commutator support. The bell is energized from the commutator by connecting the leads 38, 39 to a pair of segments 33 between which exists to a suitable difference of potential. The conductors 38, 39 may be connected to slip rings whereby an external relay may be energized to effect de-energization of the machine. The thermal switch mav be of the type described in Specification 178,103, [Class 38 (v), Electric switches &c.].
Publications (1)
Publication Number | Publication Date |
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GB291448A true GB291448A (en) |
Family
ID=1741443
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB291448D Active GB291448A (en) |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB291448A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2200501A (en) * | 1987-01-28 | 1988-08-03 | Licentia Gmbh | Electric motor with protective switch insensitive to vibration |
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0
- GB GB291448D patent/GB291448A/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2200501A (en) * | 1987-01-28 | 1988-08-03 | Licentia Gmbh | Electric motor with protective switch insensitive to vibration |
GB2200501B (en) * | 1987-01-28 | 1990-07-11 | Licentia Gmbh | Electric motor with protective switch |
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