B28DWORKING STONE OR STONE-LIKE MATERIALSIn this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme. B28D1/00 B28D1/00Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhereMachines, 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 B28D1/001Cleaning bricks by milling B28D1/185 B28D1/003Multipurpose machines; Equipment therefor B28D1/005Cutting sheet laminae in planes between faces splitting easily splittable material B28D1/322 B28D1/006Artificial ageing of stones; Providing stones with an antique appearance B28D1/008by means of a tumbler B28D1/02by sawing B28D1/025Use, recovery or regeneration of abrasive mediums B28D5/007 takes precedence; for grinding and polishing in general B24B57/00 B28D1/04with circular or cylindrical saw-blades or saw-discs B28D1/10 takes precedence B28D1/041with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles B28D1/042the saw blade being carried by a pivoted lever B28D1/043 and B28D1/044 take precedence B28D1/043Gantry type sawing machines B28D1/044the saw blade being movable on slide ways B28D1/043 takes precedence B28D1/045Sawing grooves in walls; sawing stones from rocks; sawing machines movable on the stones to be cut B28D1/046Sawing in a plane parallel to the work table B28D1/047with the work mounted on a carriage B28D1/048with a plurality of saw blades B28D1/046 takes precedence B28D1/06with reciprocating saw-blades B28D1/10 takes precedence B28D1/062the saw blade rotating about its longitudinal axis B28D1/064Sawing grooves in walls; portable sawing machines B28D1/066the workpieces being moved in a horizontal plane, e.g. with vertically or oblique movable saw-blades B28D1/068Components, e.g. guiding means, vibrations damping means, frames, driving means, suspension B28D1/08with saw-blades of endless cutter-type, e.g. chain saws , i.e. saw chains, strap saws B28D1/10 takes precedence B28D1/082consisting of chain saws B28D1/084the saw chains being mounted on a pivotingly adjustable arm B28D1/086consisting of strap saws B28D1/088Sawing in situ, e.g. stones from rocks, grooves in walls B28D1/10with provision for measuring B28D1/12Saw-blades or saw-discs specially adapted for working stone B28D1/041 takes precedence B28D1/121Circular saw blades B28D1/122with exchangeable cutter bits or cutter segments B28D1/124Saw chains; rod-like saw blades; saw cables B28D1/125with exchangeable cutter bits or cutter segments B28D1/127Straight, i.e. flat, saw blades; strap saw blades B28D1/128with exchangeable cutter bits or cutter segments B28D1/14by boring or drilling rotary drilling machines B23B; tools for drilling machines B23B51/00; portabe percussive machines B25D; rotary drilling machines for mining or quarrying E21B3/00 B28D1/143lens-drilling machines B28D1/146Tools therefor drill bits for earth or rock drilling E21B10/00 B28D1/16by turning B28D1/18by milling, e.g. channelling by means of milling tools B28D1/181using cutters loosely mounted on a turning tool support B28D1/183Hand tools, e.g. portable, motor driven B28D1/185for brick cleaning B28D1/186Tools therefor, e.g. having exchangeable cutter bits B28D1/181 takes precedence; bits for picks or pick-holders for mining or quarrying E21C35/18 B28D1/188with exchangeable cutter bits or cutter segments B28D1/20by planing, e.g. channelling by means of planing tools B28D1/22by cutting, e.g. incising B28D1/221by thermic methods B28D1/222by pressing, e.g. presses B28D1/223Hand-held or hand-operated tools for shearing or cleaving B28D1/225for scoring or breaking, e.g. tiles B28D1/226with plural scoring tools B28D1/227for cutting tubes B28D1/228Hand-held or hand-operated tools B28D1/222, B28D1/225 take precedence B28D1/24with cutting discs B28D1/26by impact tools, e.g. by chisels or other tools having a cutting edge portable percussive tools B25D B28D1/265Scabbling machines or scabbling tools B28D1/28without cutting edge , e.g. chiseling machines B28D1/30to form contours, i.e. curved surfaces, irrespective of the method of working used for artistic purposes B44B B28D1/32Methods and apparatus specially adapted for working materials which can easily be split, e.g. mica, slate, schist B28D1/322Splitting of the working materials B28D1/325for making holes in easily splittable working materials B28D1/327for cutting or shearing easily splittable working materials B28D3/00Dressing mill discs or rollers dressing the tools of sawing machines or sawing devices B23D63/00; treating the cutting members of cutting machines to facilitate cutting B26D7/08 B28D3/005Tools therefor B28D3/02Machines B28D3/04for grooving rollers B28D5/00Fine working of gems, jewels, crystals, e.g. of semiconductor materialapparatus or devices therefor working by grinding or polishing B24; for artistic purposes B44B B28D5/0005by breaking, e.g. dicing B28D5/0011with preliminary treatment, e.g. weakening by scoring B28D5/0017using moving tools B28D5/0023rectilinearly B28D5/0029rotating B28D5/0035cooperating with a straight breaking edge B28D5/0041the workpiece being brought into contact with a suitably shaped rigid body which remains stationary during breaking B28D5/0047using fluid or gas pressure B28D5/0052Means for supporting or holding work during breaking means for conveying work to or discharging work from the breaking machine B28D5/0058 B28D5/0058Accessories specially adapted for use with machines for fine working of gems, jewels, crystals, e.g. of semiconductor material B28D5/0005, B28D5/024 take precedence B28D5/0064Devices for the automatic drive or the program control of the machines B28D5/007Use, recovery or regeneration of abrasive mediums for grinding and polishing in general B24B57/00 B28D5/0076for removing dust, e.g. by spraying liquids; for lubricating, cooling or cleaning tool or work B28D5/0082for supporting, holding, feeding, conveying or discharging work B28D5/0088the supporting or holding device being angularly adjustable B28D5/0094the supporting or holding device being of the vacuum type B28D5/02by rotary tools, e.g. drills B28D5/0005 takes precedence B28D5/021by drilling B28D5/022by cutting with discs or wheels B28D5/023with a cutting blade mounted on a carriage B28D5/024with the stock carried by a movable support for feeding stock into engagement with the cutting blade, e.g. stock carried by a pivoted arm or a carriage B28D5/025with the stock carried by a pivoted arm B28D5/026with a cutting blade carried by a movable arm, e.g. pivoted B28D5/023 and B28D5/028 take precedence B28D5/027with a cutting blade arranged underneath a stationary work table B28D5/028with a ring blade having an inside cutting edge B28D5/029with a plurality of cutting blades B28D5/04by tools other than rotary type, e.g. reciprocating tools B28D5/0005 takes precedence B28D5/042by cutting with blades or wires mounted in a reciprocating frame B28D5/045by cutting with wires or closed-loop blades B28D5/042 takes precedence B28D5/047by ultrasonic cutting using abrading substances or abrading tools subjected to a bouncing action by ultrasonic energy B24B1/04 B28D7/00Accessories specially adapted for use with machines or devices of the preceding groups B28D5/0058 takes precedence B28D7/005Devices for the automatic drive or the program control of the machines B28D7/02for removing or laying dust, e.g. by spraying liquidsfor cooling work B28D7/04for supporting or holding work or conveying or discharging work B28D1/047, B28D5/0041, B28D5/0052 take precedence B28D7/043the supporting or holding device being angularly adjustable B28D7/046the supporting or holding device being of the vacuum type