The difference between an electric sewing machine and a manual sewing machine is only the method of propulsion. The electric machine uses an electric motor, while the manual machine uses a hand crank or foot pump to power it. The actual sewing machine is the same.
macchine
Elias Howe invented the Sewing machine in 1846 in Boston Massachusetts
An electric sewing machine does it's work by using electricity to move the needle up and down, and rotate the bobbin. The mechanical parts of a manual sewing machine, had to be set in motion by turning a handle, or pedal. An electric sewing machine has an electric motor attached to these rotating parts, by belt or gearing and operated by a foot switch. This makes it less tiring on the arms or feet, you can keep sewing faster and longer.
Elias Howe, invented the first sewing machine in 1846
it was invented by Elias Howe.
the westinghouse free electric sewing machine is $455
If by "olden days" you're referring to prior to 1846 (when the sewing machine was invented), there was no sewing machine. All sewing was done by hand.
He invented a sewing machine.
Singer Sewing Company
Any machine will only do what the human operator tells it to do
Elias Howe in 1844