Blow plate and blow tube assembly

Details Blow plate and blow tube assembly Blow plate and blow tube assembly

1977-06-15

1979-04-10

Lazarus, Richard B.

Pipes and tubular conduits

Miscellaneous

138103, 138177, 138DIG11, 164200, F16L 912

Patent

active

041483430

ABSTRACT:
A blow plate and blow tube assembly. The blow tube conveys core-making sand from the blow plate to a cavity in a core box for forming a sand core utilized in metal casting. The blow plate has a discharge passage with female threads. The blow tube has a body portion and a tip portion for directing the sand from the blow plate into the core box. The body portion of the blow tube has male threads axially therealong and the blow tube is threaded into the passage in the blow plate and extends from the blow plate for engaging the core box. A nut is threaded onto the male threads of the body portion of the blow tube and is disposed between the blow plate and the core box. The blow tube is made of plastic material and includes a shoulder or sleeve portion between the male threads on the body portion and the conically-shaped tip portion. The conically-shaped tip portion has spaced annular ribs thereabout for forming seals with a conical seat in the core box. The plastic of the blow tube may be cut or severed to provide a blow tube of various different lengths depending upon the blow plate and core box configuration. The wall thickness in the tip portion of the blow tube increases from the tip toward the body portion.

REFERENCES:
patent: 70712 (1902-08-01), Nethery
patent: 1305007 (1919-05-01), Robertson
patent: 1364478 (1921-01-01), Boyd et al.
patent: 2449754 (1948-09-01), Seitz
patent: 3214198 (1965-10-01), Peuchmaur
patent: 3460607 (1969-08-01), Olson

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