Automatic dredge pump rebuilder

Details Automatic dredge pump rebuilder Automatic dredge pump rebuilder

1975-07-18

1977-04-19

Reynolds, Bruce A.

Electric heating

Metal heating

For deposition welding

219125PL, B23K 904

Patent

active

RE0291900

ABSTRACT:
To rebuild the interior of a shell of a volute-type centrifugal dredge pump, a radial arm carrying a welding torch swings about the axis of the shell to repeatedly traverse the interior of the shell and automatically shifts the welding path at the end of each traverse. The radial arm advances or retracts radially as it rotates to follow the eccentricity of the volute configuration. The advance or retraction of the radial arm in response to its rotation is accomplished by a sprocket chain that walks around the periphery of a fixed sprocket on the axis of rotation, the diameter of the fixed sprocket being selected in accord with the eccentricity of the volute configuration.

REFERENCES:
patent: 2839663 (1958-06-01), McCollom
patent: 3010010 (1961-11-01), Jackson et al.
patent: 3428774 (1969-02-01), Faust et al.
patent: 3483353 (1969-12-01), Braucht
patent: 3569658 (1971-03-01), Moore
patent: 3627973 (1971-12-01), Smith

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