Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With separate heating means for work
Patent
1976-07-12
1978-01-31
Simmons, David A.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With separate heating means for work
156304, B29C 1900
Patent
active
040713954
ABSTRACT:
Method and apparatus for construction angle fittings and large sweeps of polyethylene pipe by the fusion process, which comprises the preparation of short pipe segments of which both faces are cut at a selected angle (90-A) to the axis of the pipe. Both faces are cut at the same angle, so that the included angle at the two faces is equal to 2A. A conventional fusion pipe joining apparatus, which normally holds two pipes colinear, for fusion at a plane of juncture which is perpendicular to the axis of the pipe, is modified to have inserts into the pipe clamping means, so that the axes of the pipe segments are at the selected angle A. When two segments are clamped respectively in the fixed clamp and the movable clamp are brought together, the contiguous faces will be plane, parallel and will have the same elliptical contour, and can be joined by the fusion process. Additional segments can be added to the ends until a sweep of any desired total angle of turn is constructed.
REFERENCES:
patent: 2479580 (1949-08-01), Marco
patent: 2886262 (1959-05-01), Fletcher
patent: 3729360 (1973-04-01), McElroy
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