Stone working – Dressing – Rotary cutter
Patent
1978-10-20
1980-02-19
Whitehead, Harold D.
Stone working
Dressing
Rotary cutter
125 13R, 51170PT, 30373, B28D 118
Patent
active
041889347
ABSTRACT:
A step groover apparatus has a housing to which a direct drive means is attached. The drive means has a rotatable shaft extending into the interior of the housing and on which a plurality of grooving blades are fixed in space relationship. The blades extend through an opening in a lower portion of the housing. The housing has front and rear skids on which the apparatus slides as it moves along the top of the step. The skids are vertically adjustable to vary the depth of the groove to be cut in the step. A vertically and horizontally adjustable face guide is adapted to be forced against the face of the step so that the grooves will be parallel to the step face. A radially extending handle is attached to the housing so that the rear skid may be pressed downward against the top of the step. A laterally extending handle is attached to the housing so that the front skid and the face guide may be simultaneously pressed against the top and face of the step, respectively. Cooling apparatus is also provided to extend through the housing to spray the blades with water and provide lubrication between the skids and the step.
REFERENCES:
patent: 1404342 (1922-01-01), Clarke
patent: 1845666 (1932-02-01), Jennings
patent: 2487277 (1949-11-01), Siftar
patent: 2709878 (1955-06-01), Olson
patent: 3722496 (1973-03-01), Schuman
Fouts William A.
Reinhardt Frederick N.
Cushion Cut, Inc.
Whitehead Harold D.
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