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GB267492A
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Improved commutator motors or generators with switching arrangements for the rotor winding
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US1581846A
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Commutator motor with switching arrangement for the rotor windings
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GB242602A
|
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Improved commutator motors or generators with switching arrangements for the rotor winding
|
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GB242601A
|
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Improvements in and relating to speed conversion gear for electric motors
|
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GB213275A
|
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An improved device for indicating the power and voltage of electromotors
|
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GB233360A
|
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A device for indicating the correct adjustment of speed of electromotors
|
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GB198360A
|
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Electrically operated starting and stopping device for talking machines
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GB197967A
|
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Improvement in sound reproducing or recording machines
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GB199640A
|
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Improvements in turntables of sound recording or reproducing machines
|
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US1502958A
|
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Device for driving shafts at a low and uniform speed by an electromotor
|
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GB174318A
|
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Improvements in or relating to electric-motors for the direct driving of slowly rotating shafts
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GB175593A
|
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Improvements in or connected with sound-reproducing machines
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GB154892A
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Driving mechanism for talking machines
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