San Francisco : Architect and Engineer, Inc · leaf 447
The assembly offers the cleaning capac-ity of a large wet-dry vacuum cleaner atexceptionally low cost. It consists of an airintake and exhaust unit powered by a 1h.p. motor, inside filter bag, and conver-sion adapter cover which fits any standard55-gallon drum. Attaching the unit re-quires no…
Architecture · Building
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![An illustration from [Catalog] (1902)](https://img.insideoutlibrary.com/img/200/ia-catalog00wind-9-23.webp)
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