Working stone or stone-like materials, e.g. brick, concrete , not provided for elsewhere; Machines, devices, tools therefor (fine working of gems, jewels, crystals B28D5/00; working by grinding or polishing B24; devices or means for dressing or conditioning abrasive surfaces B24B53/00)

Child Classifications

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• B28D 1/001
• B28D 1/003
• B28D 1/005
• B28D 1/006
• B28D 1/02 by sawing
• B28D 1/14 by boring or drilling (rotary drilling machines B23B; ; portabe percussive machines B25D; )
• B28D 1/16 by turning
• B28D 1/18 by milling, e.g. channelling by means of milling tools
• B28D 1/20 by planing, e.g. channelling by means of planing tools
• B28D 1/22 by cutting, e.g. incising
• B28D 1/26 by impact tools, e.g. by chisels or other tools having a cutting edge (portable percussive tools B25D)
• B28D 1/30 to form contours, i.e. curved surfaces, irrespective of the method of working used (for artistic purposes B44B)
• B28D 1/32 Methods and apparatus specially adapted for working materials which can easily be split, e.g. mica, slate, schist