Hole cutting apparatus utilizing a cylinder saw

Details Hole cutting apparatus utilizing a cylinder saw Hole cutting apparatus utilizing a cylinder saw

1977-09-22

1979-05-01

Spruill, Robert Louis

Cutting by use of rotating axially moving tool

With work-engaging structure other than tool or tool-support

Work-gripping clamp

408115R, 408204, B23B 4728, B23B 4100

Patent

active

041520904

ABSTRACT:
An apparatus for cutting a hole through the sidewall of a longitudinally extending pipe is disclosed herein. This apparatus includes a cylinder saw, i.e., a hole saw and a portable jig for supporting and guiding the saw during the hole cutting operation.

REFERENCES:
patent: 2749781 (1956-06-01), Herzl
patent: 2794469 (1957-04-01), Shortell
patent: 3465620 (1969-09-01), Hilburn
patent: 3537337 (1970-11-01), Best
patent: 3847501 (1974-11-01), Doty
patent: 3922107 (1975-11-01), Fowler
patent: 4060333 (1977-11-01), White

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