Rogers' drawing and design; an educational treatise relating to linear drawing; machine design; working drawings; transmission methods; steam, electrical and metal working machines and parts; lathes; boiler and parts; instruments and their use; tables, etc (1913)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 310
in Fig. 495. The boiler must also be provided with a blozu-offpipe, through which the water may be discharged ;in Fig. 492 the feed pipe, as well as the blow-offmay be seen at the rear of the boiler. A nianhole,¥\g. ^g/, is constructed in the front heador on top of the boiler, to allow a person to…
Mechanical drawing · Machine design
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