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"Produces a jet of hydrogen." —The Encyclopedia Britannica 1910

Hydrogen Jet Apparatus

"Produces a jet of hydrogen." —The Encyclopedia Britannica 1910

"1. In rope-drilling, a cylinder, provided with a valve at the bottom, which is lowered into the drill-hole from time to time to remove the pulverized rock, or sludge. Also called a sludger. 2. A powerful water-jet with an annular nozle inclosing a tube which is sunk in loose sand, and operates as an injector to lift the sand with the water which discharges back through the tube. a. sand to be removed, b. suction-pipe, c. induction-pipe, d. discharge-pipe" —Whitney, 1889

Sand Pump

"1. In rope-drilling, a cylinder, provided with a valve at the bottom, which is lowered into the drill-hole…