Van Kannel Revolving Door Co., "G.W. Gaden" · Van Kannel Revolving Door Co.;"G.W. Gaden" · leaf 31
gs may be constantly rotated, or so that a doorattendant may start the wings rotating by pushing a button when it is desired to havethe wings revolve in order that people may pass through the vestibule. This device, above illustrated and described, is especially adapted for doorsinstalled in hotels… … Figure 32 The illustration shows two ways of providing for rubber mats. One side shows howan uneven floor can be taken care of and made perfectly level by means of wood packingunder the mat with projecting ends at the vestibule opening, making a gradual approach.Again the opposite side shows…
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