About the Book
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1883 Excerpt: ... /, pipe sliding upon E. In ordinary position of E, the pipe, I, is carried thereon in the manner represented, and performs no function; but when E is by extreme movement of arm, G, lifted to its fullest extent, the lifting of E through the last part of its movement causes pipe, /, to slide upwards thereon, and consequently to be elevated still faster. This is effected by additional parts represented, e, external lugs on E, and i, external lugs on / J, bent levers joined to i, K, links hinged to both e and J. b, stops. When G', is thrown forward ' the work in the stack sinks and the fire is urged intensely." As arm, G', is drawn back, it is secured, and the arms, G," rods, E, lugs, f, and movable pipe, E, will be correspondingly elevated. A given movement of arm, G, produces equal change of position of E. This continues until by the rising of E and its attachment, the outer portion of levers, J, meet stops, b. The further elevation of the outer portion of levers, J, being prevented, the continued elevation of B, thrusting upward on the linkbars, K. compels outer pipe, /, to ascend rapidly and soon to meet and fit tightly to the under face of cone, C. In this position of the parts, the exhaust steam ejected upwards into D, returns upon itself, and flows backwards into and through the furnace. MM, holes in sides of inner pipe, or chimney, through which sparks as soon as they are thrown down and settle in space between B and D, may, by moving with the strong current which there obtains, again find access to the interior of B, and may repeat the operation until destroyed by the repeated concussion and friction, m, shields which aid the continuance of current when exhaust is feeble and much spread, and also prevent fall of sparks by gravity from holes, ...
