Recirculating sandblasting machine
Recovery system
Recovery system
Rectilinear work finishing apparatus
Regulated surface treating wheel
Regulating wheel dressing system in centerless grinder
Regulating wheel pivot adjusting device
Reinforced finger seal for shot blast cabinets and the like
Relief grinding of lawn mower cylindrical blades
Removable belt-backing mechanism for a belt sander
Removable polishing pad assembly
Removal of built up layers of organic coatings
Removal-compensating polishing apparatus
Renewable aromatic cedar block
Replaceable lens surfacing pad with integral wear indicating pat
Replaceable spindle lock system
Replaceable, one piece, hinge-type, slot-engaging pack unit
Reprofiling method of the rails of a railroad track and railroad
Restoration or drill buttons
Resurfacing device for screwdrivers and like tools