Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics (1892)
Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 788
be accommodated ren-ders it desirable to use one set of doors as an entrance, and the second set of tloors as ameans of departure from the vault. There is, however, another and far more important reason for the use of two openings.Untold expense and annoyance would be entailed upon the patrons and… … Fk;. 3.—Marvin vault. Section. in the morning, as might happen, despite all reasonable care, if but one entrance is provided.That the locks on both sets of entrances, where two openings are provided, should causetrouble at the same moment is a contingency so remote as to be removed from the…
Mechanical engineering
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