for rotating the spindle at a speed adaptable to wear of the grinding wheel

Full Title

Drives or gearings for grinding machines or devices; Equipment therefor > for rotating or reciprocating working-spindles carrying grinding wheels or workpieces > for rotating the spindle at a speed adaptable to wear of the grinding wheel

Classification Context

Section:

PERFORMING OPERATIONS; TRANSPORTING

Class:

GRINDING; POLISHING

Subclass:

MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS