Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of NL133423CpublicationCriticalpatent/NL133423C/xx
Priority claimed from FR80773Aexternal-prioritypatent/FR1497124A/fr
B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
B22D31/002—Cleaning, working on castings
B—PERFORMING OPERATIONS; TRANSPORTING
B24—GRINDING; POLISHING
B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
B—PERFORMING OPERATIONS; TRANSPORTING
B24—GRINDING; POLISHING
B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
B24B31/14—Abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls
