A tube a few inches long with a fine nozzle at the top, is mounted as in fig.
The water as it thus issues from the nozzle feels to the touch like metal, and the strongest man cannot sensibly affect it with a crowbar.
During the down-stroke of the piston the former was pressed home, so that no air entered the nozzle and vessel, while the latter was forced open by the air which so escaped from the cylinder.
Or it may be revealed by placing a sensitive flame of the kind described below with its nozzle at the focus.
Adds enough carbon to give it the content desired, and then immediately pours the steel into a great claylined casting ladle by turning the converter over, and through a nozzle in the bottom of this ladle pours the steel into its ingot moulds.