Carleton v. Watson

KEECH, District Judge..

This is an action to compel issuance of a patent for a portable hydraulic power device to control the operation of a vertical stopper in the nozzle of a bottom-pouring ladle for pouring molten metal, specifically, molten steel. By means of applicant’s device the stopper may be raised and lowered, or stopped instantaneously -and accurately at any de-; sired position, by use of a push button control at the end of a flexible cable, which affords the operator a hitherto unknown delicacy of control, yet permits him to stand out of danger, away from the ladle, and also to…