This section is from the book "Practical Up-To-Date Plumbing", by George B. Clow. Also available from Amazon: Practical Up-To-Date Plumbing.
A nickel-plated brass washbowl floor-trap without vent is shown in Fig. 164, and a similar washbowl floor-trap with wall-vent in Fig. 165:
A nickel-plated brass washbowl wall trap, with or without the coupling plug and stopper is shown in Figs. 166 and 167.
A nickel-plated brass washbowl floor trap with wall-vent is shown in Fig. 168.
 
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