Metal founding – Flask or flask section – Plural part flask or flask section
Patent
1975-07-07
1976-10-19
Husar, Francis S.
Metal founding
Flask or flask section
Plural part flask or flask section
B22C 2110
Patent
active
039865487
ABSTRACT:
A two part bushing or guide pin for aligning foundry flasks, hot boxes, and the like comprising: a machinable body portion having external threads for threading into a flask, hot box, etc., and internal threads for receiving either a hardened nonmachinable guide ring or a hardened nonmachinable guide pin.
In the case of the hardened nonmachinable guide ring, the outer surfaces are provided with hardened ground threads adapted to be threaded into the internal threads of the main body portion. Suitable means is provided for locking the ring in angular relationship with the body after it is threaded therein. The construction permits the main body portion of the bushing to be firmly seated and locked in a flask, etc., following which the hardened ring can be rotated within the main body portion until its surfaces are accurately angularly positioned relative to the flask, and the ring then locked to the bushing. The locking means may comprise an opening through the sidewalls of the ring for receiving a staking tool for deforming the internal threads of the main body portion. Alternatively, a longitudinally extending hemicylindrical groove may be provided in the periphery of the hardened ring, and the adjacent portion of the body drilled, to receive a soft metal locking pin.
In the case of the guide pin, it is provided with a ground and hardened guide pin insert having external ground threads adapted to be inserted into the softer machinable body portion. The guide pin insert may include the hemicylindrical groove for locking it to the machinable body portion.
REFERENCES:
patent: 2499146 (1950-02-01), Kindt
patent: 2677160 (1954-05-01), Peterson
patent: 3472312 (1969-10-01), Rusk
Koch Robert E.
Rusk Gerald R.
Hickey William P.
Husar Francis S.
Roethel John E.
The Freeman Supply Company
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