Hutton, Frederick Remsen, 1853- [from old catalog] · New York, J. Wiley & sons; [etc., etc.] · leaf 236
r; the surface which bears on the valve remains alwaysparallel to itself. It will be apparent that any desired pres-sure of contact can be made between the sliding-valve and thepressure-plate while the pressure of steam is kept from theback of the valve. The type selected will also serve to… … 200 MECHANICAL ENGINEERING OF POWER PLANTS. in Fig. 166, where the pressure-plate adjusts across the pathof the valve by similar inclined surfaces. The same engineis shown in Fig. 146. Or, again, the pressure-plate may bearupon flat surfaces, from which it is held away by packing-
Mechanical engineering · Steam power plants
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