Abstract A stopper head for a ladle or similar receptacle comprising a hollow shell of refractory material having its greatest transverse dimension at its upper portion and tapering to smaller transverse dimension toward its lower portion, the shell being open at its top and closed at its sides and bottom, the shell being adapted to receive the lower end of a stopper rod through its open top, the shell containing at its lower portion and extending up to a level at least two-fifths the distance from the bottom to the top of the shell material having an insulating property greater than the insulating property of the refractory material of the shell, and insert means in the upper portion of the head for holding the lower end of the stopper rod against withdrawal.
Inventors
👤 John B Cahoon Jr
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-25 23:24
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/14; B22D41/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A stopper head for a ladle or similar receptacle comprising a hollow shell of refractory material having its greatest transverse dimension at its upper portion and tapering to smaller transverse dimension toward its lower portion, the shell being open at its top and closed at its sides and bottom, the shell being adapted to receive the lower end of a stopper rod through its open top, the shell containing at its lower portion and extending up to a level at least two-fifths the distance from the bottom to the top of the shell material having an insulating property greater than the insulating property of the refractory material of the shell, and insert means in the upper portion of the head separate from the insulating material for holding the lower end of the stopper rod against withdrawal.
Claim 2
Dependent Claim
136 words
A stopper head for a ladle or similar receptacle comprising a hollow shell of refractory material having its greatest transverse dimension at its upper portion and tapering to smaller transverse dimension toward its lower portion, the shell being open at its top and closed at its sides and bottom, the shell being adapted to receive the lower end of a stopper rod through its open top, the shell containing at its lower portion and extending up to a level at least two-fifths the distance from the bottom to the top of the shell material having an insulating property greater than the insulating property of the refractory material of the shell, and insert means in the upper portion of the head separate from the insulating material for holding the lower end of the stopper rod against withdrawal.