Model engine construction, with practical instructions to artificers and amateurs (1894)
Alexander, John Henry. [from old catalog] · London, New York, Whittaker · leaf 88
to force thevalve more firmly down upon its seat. Only enginesprovided with a force-pump require this valve. The THE BOILERS AND THEIR FITTINGS. 69 clack-box is a casting or a brass block. A passagemust be made right through the block, of the samesize as the delivery-pipe W. From one end takeout a… … Fig. 21. a pipe or coupling-screw, which forms a junctionwith the delivery-pipe from the pump. Into theupper end is screwed a circular brass plug C, whichacts as a stop for the clack V, and can be taken offwhen required to examine the interior. At thecentre of the clack-box, on one side, drill a…
Steam-engines · Machinery
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