Patent ID: 6712061
Filing Date: 2004-03-30
Classification: B23D,B23Q,B28D

Abstract:
In combination, a track, trolley, crescent, and stoneworking tool for treating a stone slab, comprising:said track having a base with a first surface which contacts said stone and a second surface upon which at least one roller may travel in a path, and having a ridge extending longitudinally parallel to said path with first and second normal surfaces which extend in a first direction normal to said stone slab and in a second longitudinal direction; said trolley supported on said at least one roller which rolls on said second surface and having a second roller which rolls on said ridge first normal surface and a third roller which rolls on said second normal surface and further having a tensioning member which is movable to vary a distance between said second and third rollers from a first position which holds said second and third rollers tightly against said ridge to a second position which allows said second and third rollers to slide normal to said stone slab, said crescent supported upon said trolley and having first and second crescent members each forming an arc about an edge of said stone slab having an inside and an outside and a space between said first and second crescent members within which said stoneworking tool operates, said tool having a tool support carriage for traversing said crescent and carrying said tool therewith along said arc.