Earlier designs like trim hammer, steam drop hammers, board or strap hammers, use the power source to raise the ram, but let its fall be propelled solely by gravity.

A vehicle designed to be propelled through a mechanism solely by human power.

It was the world's first aircraft to be propelled solely by a liquid-fuelled rocket, making its first powered flight on 20 June 1939 with Erich Warsitz at the controls.

Swimming float-assisted can be more difficult than swimming without the float, because if the float is held in front of the swimmer a more vigorous workout for the legs is given as the swimmer's weight is propelled solely by the legs, and vice versa for the arms.

Unlike the Razor, which requires the occasional push-off with a foot, the Trikke (it rhymes with bike) is propelled solely by the side-to-side rocking of the rider's body.

Sailing ships are propelled solely by means of sails.

Because the Ingham had no steam engine, and was propelled solely by sails and wind, the more advanced steam powered vessels, used by the smugglers, could easily escape her.

The carriage was propelled solely by the force of wind, and acquired a speed which exceeded that of horses.