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What has hands but can not clap?

Correct answers: 56

The first user who solved this task is Thinh Ddh.

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This Town Ain't Big Enough

A lot of conflict in the Wild West could have been avoided...
If cowboy architects had just made their towns big enough for everyone!

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Electric motor

In 1904, the first direct current, interpole, electric motor to be patented in the U.S. was issued to Mathias Pfatischer of Phildadelphia, Pennsylvania under the title "Variable Speed Motor" (No.775,310). His improvement was to "effect commutation without sparking, with a variable load as well as at variable speed and which is capable of rotation in either direction." The new design added auxiliary-field pole-pieces which were small as compared to the main pole-pieces.«

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