Stone working – Sawing – Rotary
Patent
1977-09-29
1979-03-20
Whitehead, Harold D.
Stone working
Sawing
Rotary
51241B, B28D 104
Patent
active
041448677
ABSTRACT:
A cutting machine for concrete piles and the like having an annular elongate frame positionable around a concrete pile, with first and second sets of guide members in spaced-apart relation to align the frame with the pile, first and second sets of movable clamps for locking the frame to the concrete pile, annular track means on the frame and a cutter head with drive means movably mounted on the annular track means and having a cutter-carrying arm movable across the top of the frame to engage the wall of the concrete pile.
REFERENCES:
patent: 1881441 (1932-10-01), Fisher
patent: 2271582 (1942-02-01), Dixon
patent: 2455742 (1948-12-01), Dorian
patent: 2581479 (1952-01-01), Grasham
patent: 2807921 (1957-10-01), Dewing
patent: 4044749 (1977-08-01), Bowen
Kwech Horst
Wachs Edward H.
The E. H. Wachs Company
Whitehead Harold D.
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