change-speed

Definitions

noun The mechanism by which a constant speed of rotation in a motor may cause a varying speed of the driving-wheels, and hence of the whole of the motor-vehicle.
noun The train of wheels used in feed-mechanisms for lathes and similar tools, by which changes can be made in the relative number of turns per minute for the driving and driven shafts. Sometimes called change-qear.

Sorry, no etymologies found.

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The change-speed lever is on the right hand, and by its side is another notched lever which applies a band brake to each of the rear-wheel hubs.

To Drive a Motorcar | Edwardian Promenade 2009
The main driving mechanism is designed either as a change-speed drive or as a stepless drive.

2. Structure of the regular engine lathe Horst Kth 1990
This is done, as a rule, via change-speed drives which must be operated when the machine is at rest or is slowing down.

2. Kinds, construction and applications of drilling machines Dieter Frank 1990
Then with a word of warning to my companion, I pulled at the change-speed lever.

The Motor Pirate G. Sidney Paternoster
"How go on with a change-speed lever broken short off, close to the quadrant?" he shrilled out in French.

My Friend the Chauffeur Frederic [Illustrator] Lowenheim 1901
"But I have no doubt it will be in good marching order by the time it is wanted, as my chauffeur was to rise at four, knock up a mechanic at some shop in the village, and make the new change-speed lever which was broken yesterday.

My Friend the Chauffeur Frederic [Illustrator] Lowenheim 1901