.—How an oven on the passenger cars of the steam rail- shelf can be drawn out of the oven merely by opening ways. the door is shown in a patent issued to a Philadelphia inventor. A bar is pivotally connected with the shelf. A Device for Saving Flue Gold or and has an angle end arranged to come into… … AUTOMATICALLY-OPERATED OVEN SHELF. either side. one requires in the neighborhood of five inches of In order to make accurate readings it will be found water. Salt water is as efficient as fresh. As there the door of the oven. When the oven door is closed, necessary to adjust the scale ring…
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