In the same year, 1834, Jacobi invented an electric motor and Runge made the important discovery of carbolic acid.
So we have an electric motor and storage batteries for quiet work.
If cooling with air-blast is adopted, a blower, with electric motor or some other source of power to operate it, must be provided.
"And John's got an electric motor," chimed in Sid as John finished.
This produced the heel-and-toe action treadle, a familiar part of the sewing machine until its replacement by the electric motor.
At the rounded end was a propeller driven by an electric motor.
The camera may be turned by hand or driven by an electric motor through belts and pulleys.
An electric motor is attached to the reel and turns it in one direction or the other.
He cannot have an electric motor, for the storage cells would weigh too much.
This one was powered by an electric motor which was powered by the ship's batteries.