Chipless shell cutter for large diameter plastic pipe

Details Chipless shell cutter for large diameter plastic pipe Chipless shell cutter for large diameter plastic pipe

1975-11-24

1977-11-08

Simpson, Othell M.

Cutting by use of rotating axially moving tool

With product handling or receiving means

408209, 408703, 408713, B23B 4108, B23B 5104

Patent

active

040573575

ABSTRACT:
A rotatable shell cutter member for cutting a hole in large diameter and thick wall plastic pipe. The shell cutter member is rotated and advanced with a positive predetermined lead against the plastic pipe and it first forms a hole in the plastic pipe by cutting and retaining a coupon therefrom and it further progressively enlarges the hole to a diameter equal to or slightly greater than the overall outside diameter of the shell cutter member. The chips initially cut from the plastic pipe in cutting the coupon are discharged upwardly and inwardly of the shell cutter member above the coupon being cut and, when the shell cutter member with its cutting edge in constant cutting engagement with the pipe begins cutting a continuous chip cut, it is also discharged upwardly and inwardly of the shell cutter member. The cutter blade for cutting the plastic pipe is detachably secured to the body member of the shell cutter member so that it may be easily removed and replaced or resharpened and cleaned when the situation requires such action. A drilling machine powered by a compressed air motor, electric motor or gasoline powered engine may be used to rotate and advance the shell cutter member although hand operated drilling machines with positive feed advance may also be used.

REFERENCES:
patent: 2027139 (1936-01-01), Abramson et al.
patent: 2179029 (1939-11-01), Barnes
patent: 2941427 (1960-06-01), Ver Nooy
patent: 3349792 (1967-10-01), Larkin
patent: 3564946 (1971-02-01), Kaser

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