Cold storage, heating and ventilating on board ship (1911)
Walker, Sydney Ferris · New York : Van Nostrand · leaf 208
FIG. 47. ISENTHAL METHOD OF REGULATING WITHOUT SWITCHES. the heating elements. The corresponding fitting (Fig. 46)consists of a solid piece of insulating material of square sec-tion, carrying conductors on its faces, the conductors beingconnected to flexible cords, to which the regulator is…
Ships -- Heating and ventilation · Cold storage on shipboard
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-69-65.webp)
