with positively-driven trip levers

Full Title

Valve drive, valve adjustment during operation, or other valve control, not provided for in groups > with tripping-gear; Tripping of valves > with positively-driven trip levers

Classification Context

Section:

MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

Class:

MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES

Subclass:

CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES