Method of and apparatus for cutting a pipe

Details Method of and apparatus for cutting a pipe Method of and apparatus for cutting a pipe

1992-06-22

1993-10-05

Yost, Frank T.

Metal working

Method of mechanical manufacture

Converting

29428, F16L 4108

Patent

active

052493440

ABSTRACT:
Cutting apparatus is provided for cutting a hole or `window` in the wall of a pipe for example prior to joining a branch pipe to a host pipe. The apparatus comprises a chassis frame 14 carrying a cutter unit 42 supporting a cutter tool 62. The chassis is attached to and movable around the pipe 12 by means of `roller` chains 24. The cutter unit is movable with respect to the chassis frame by means of the associated slider block 38 which is slidable along longitudinally extending chassis frame which is slidable along longitudinally extending chassis frame members 16. Thus, the cutter tool 62 can be moved relative to the workpiece in one sense by movement of the chassis frame 14 and in another sense by movement of the cutter tool relative to the chassis frame. A combination of such movements enable the hole or `window` to be cut.

REFERENCES:
patent: 2723882 (1955-11-01), Barnett
patent: 3148896 (1964-09-01), Chu
patent: 4163561 (1979-08-01), Butler

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