Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 672
Fig. 1559. ARCHITECTURAL CONSTRUCTION. 655 Traps are varied in their form, but all to cut off the air-connection of thesoil-pipe with the room in which the appliance is placed. The smaller trapsare invariably lead, the larger cast-iron. Figs. 1560 to 1567 represent the usual forms of lead traps.… … Fig. 15i Fig. 1.567. any obstruction. As the water may be drawn out of any trap by the passageof water down the pipe with which it is connected, air-vents, as already de-scribed, in the water-closet trap, are put on these small traps. But if upperwaste pipes be inserted, as in Figs. 1560 and 1561,…
Mechanical drawing
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