speed gear

noun

1. an adjustable gear for driving a machine at various speeds.

Example Sentences

Fig.8 shows another European design, in which a variable-speed gear is used.

From Project Gutenberg

The auto slowed down, as the low-speed gear came into play, and bowled along under a stretch of shady trees.

From Project Gutenberg

He threw in the second speed gear and in a little while had lessened the distance between the auto and the motor-cycle.

From Project Gutenberg

The next instant the auto fairly sprang forward, as Jerry threw on the high-speed gear and opened wide the flow of gasolene.

From Project Gutenberg

With its four-change speed-gear a motor cycle seems better adapted for easy and economical travelling than the human machine.

From Project Gutenberg