the feeler opening or closing electrical contacts

Full Title

Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually > using a feeler or the like travelling along the outline of the pattern, model or drawing; Feelers, patterns, or models therefor > Means for transforming movement of the feeler or the like into feed movement of tool or work > involving electrical means > using mechanical sensing > the feeler opening or closing electrical contacts

Classification Context

Section:

PERFORMING OPERATIONS; TRANSPORTING

Class:

MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR

Subclass:

DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL, CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT