Screw Jacks.
Screw jack or lifting jack. A screw working in a threaded base or stationary nut and turned by a lever inserted into holes near the top, of which there are usually four. A loose plate or swivel is placed on top of screw.
“Slams” and “Shocks.” Banging, clanking and jarring noises indicating a derangement of the action of a pump.
Sleeve Coupling.
Sleeve-coupling. A threaded connection for uniting the two ends of pipes of equal size.
“Slippage.” The difference between the calculated and actual work performed by a pump.
Sluice. A water-gate; a channel to run off waste water.
Slurry pump. A special pump for handling a mixture of earth water.
Socket-wrench. A wrench for turning nuts, having a socket in the end made to a special size and shape of the nut to be turned.