How to build, equip and operate a cotton mill in the United States (1913)
Frank P. Bennett & Co · Boston, New York [etc.] F. P. Bennett & company, inc · leaf 111
ionshows the apparatus with the damper 102 MILL CONSTRUCTION AND POWER open, and Figure 132 shows a similarventilator with the damper closed.The mechanism illustrated for operat-ing the damper is simple, and es-pecially efficient. With some ventila-tors a simple swinging damper is pro-vided, and… … Fig. 131. Mill Ventilator with DamperOpen. not necessary to fasten the cord whichoperates the damper, as a locking de-vice is provided. The damper isclosed by pulling a cord which releasesa steel locking device. For certainclasses of work, such as ventilatingdyehouses, bleacheries, etc., wherethe…
Cotton manufacture · Textile factories
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