Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise on the care and management of steam engines, boilers and electric machinery (1922)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 220
t a series of hollowtrunks with their front ends open. When in operation a Mechanical Stolien 207 steam blast is admitted to each of the several trunk gratebars through the small branch pipes, and this blast inducesan air current of more or less pressure, which finds anoutlet through the narrow… … I THE MURPHY AUTOMATIC FURNACE overhead shaft; see Fig. 82. These cranks are set alternate-ly at 90^ with each other, thus giving a forward movementto one-half of the grate bars, while at the same time theother half is moving backward. In this manner the fuelis kept slowly moving down the inclined…
