Blow tube arrangement for core and mold making machinery

Details Blow tube arrangement for core and mold making machinery Blow tube arrangement for core and mold making machinery

1990-08-31

1991-08-13

Batten, Jr., J. Reed

Metal founding

Process

Shaping a forming surface

164 21, 164200, 164201, B22C 1524

Patent

active

050388452

ABSTRACT:
A blow tube arrangement and method for controlling the flow of granular mold material to the cavity of a mold or core making machine, in which one or more transverse openings are formed in the tip of the blow tube, which allow flow into the cavity when the tip is inserted into the cavity but which are covered as the tip is withdrawn. A spring urged covering sleeve receives the tip as it is withdrawn from the mold pattern structure to maintain closure of the tip openings.

REFERENCES:
patent: 3235921 (1966-02-01), Bego et al.
patent: 3747665 (1973-07-01), Taburinsky et al.
patent: 3903952 (1975-09-01), Bego et al.
patent: 4129160 (1978-12-01), Lenglet

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