Fig. 9—Japanning and Enamelling Oven For Bedstead, Ironmongery, Cash-box, and Lamp Factories.
Fig. 10.—Japanning and Enamelling Stove for parts of Sewing Machines.
It will be seen from the various illustrations that the articles to be treated are absolutely isolated from actual contact with the fire or the fire gases and other impurities which must be an objection to all methods of heating by means which are not of a purely mechanical nature. This principle not only recommends itself as scientifically correct and suited to the purpose in view, but is also a very simple and practical one. It affords the means of applying the heat at the point where it is required to do the work without unduly heating parts where heat is unnecessary; it secures absolute uniformity, perfect continuity, and the highest possible fuel economy.
Fig. 11.—Japanning and Enamelling Stove for Iron-Bedsteads and Household Ironmongery with Truck on Rails.