Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 823
Walkers patent improved hot-air furnace, manufactured at No. 89£ Leonard-street, New York, is represented in Figs. 3728 and 3729. The objects aimed at by the patentee in the construction of his hot-air furnace are— 1st. By means of one fire to produce a mild, uniform, and agreeable temperature… … 2d. To avoid all dust and gas, and to keep the apartments well ventilated by means of a constantsupply of fresh air from without. WARMING AND VENTILATION. 8d. To be simple, bo thai any one capable of managing a a take care of it. ■4 tli. i ntiik-al in point 1 fuel 5th. To be durable, * luent or exp…
Mechanical engineering
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