Model engine construction, with practical instructions to artificers and amateurs (1894)
Alexander, John Henry. [from old catalog] · London, New York, Whittaker · leaf 89
thecentre of the clack-box, on one side, drill a horizontalpassage P (of the same bore as the delivery-pipe) 70 MODEL ENGINE CONSTRUCTION. which leads into the interior, but higher than thevalve V can rise; a short pipe connects the clack-boxwith the boiler. The valve V is made of brass, or isa… … Fig. 22. above. The valve is guided in rising and falling bythree feathers underneath, or by a stem filed flatupon three sides. In large engines, the lift of thevalve should not exceed one-fourth of the valvesdiameter. The regulator. This in models is simply a cockscrewed into the boiler, which…
Steam-engines · Machinery
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