eby the is inserted a plug, C, the flanged head of which, catching on arc. A is the cylinder, provided at its upper end with a stuff- direct entrance of the cold air from the conducting tube to the interior and flange of the tube, prevents its falling out. ing box, B, and having at its lower end a… … valve. HOCK AND MARTIN'S HOT-AIR ENGINE. Patented through the Scientific Fig. 1 represents a vertical lon- American Patent Agency, May gitudinal section of the motor, 15, 1877, by Mr. W. T. Snyder, of Catasauqua, Pa. nor lowers the valve, *', so as to close the upper channel and and Fig. 2 is an…
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