What's the difference between drawbar and drawspring?
Drawbar
Definition:
(n.) An openmouthed bar at the end of a car, which receives a coupling link and pin by which the car is drawn. It is usually provided with a spring to give elasticity to the connection between the cars of a train.
(n.) A bar of iron with an eye at each end, or a heavy link, for coupling a locomotive to a tender or car.
Example Sentences:
(1) The former is composed of a transformer (drawbar-sensing mechanism), an amplifier of biopotentials, a generator, and an ultra-short-wave transmitter.