Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1989-01-17
1990-10-30
Hartman, J. J.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51 33R, 51126, 51283R, B24B 906, B24B 722
Patent
active
049659642
ABSTRACT:
A portable apparatus for drilling and shaping tile at a worksite has a base assembly with a support arm extending upright therefrom. A horizontal housing, rotatably connected at one end to the support arm, houses a slide assembly which supports a router; the slide assembly including a set of wheels for rolling and guiding the router radially in relation to the support arm. An adjustable annular collar about the support arm fixes the height of the horizontal housing and the associated router with respect to the support arm. Further adjustment of the height of the router in relation to the base assembly is accomplished by using a turnbuckle assembly which lowers the support arm into and withdraws it from the base assembly. A work tray supported on the base assembly has markings to position and guide the tile with respect to cutting tools rotatably fixed to the router for drilling holes in and linearly and arcuately shaping the tile. The cutting tools are cooled and lubricated by a liquid recirculating system.
REFERENCES:
patent: 1687252 (1928-10-01), Laessker
patent: 2137140 (1938-11-01), Lewis
patent: 3837757 (1974-09-01), Levine
patent: 4583515 (1986-04-01), Ballenger
Hartman J. J.
Watson Bruce P.
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