A treatise on architecture and building construction (1899)
International Correspondence Schools · Scranton, The Colliery engineer co. · leaf 76
rap, and all other traps having the water wayrestricted by mechanical appliance, such as check-valves, areliable to chokage by accumulating hair, small pieces of rags,sponges, and even matches. The position of the ball when water passes through thetrap is shown by dotted lines. It cannot enter the… … Fig. 38. dipping into a small pool of water formed by the waste out-let c projecting into the trap casting. The chief objectionsto the bell trap are: 1. It soon becomes choked by sediment lodging in thebottom, which cannot be removed without lifting off the bell.This, for the time being, permits…
Architecture · Building
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