Kirkman, Marshall M. (Marshall Monroe), 1842-1921 · New York and Chicago, The World railway publishing company · leaf 53
thelocomotive boiler (entering from the right as shownin the engraving) strikes the upper side of the valve and the under sideof the piston, asthere is no pressureon top of the latterdue to the asbestospacking (shown inthe illustration bydark lines) therein,the valve is forceddown and… … LOCOMOTIVE APPLIANCES. 45 phragm to raise sufficiently to clamp the valve to itsseat and shut off further supply until the systempressure reduces below the set limit. When that con-dition again exists, the diaphragm springs downwardallowing the supply valve to again open. Adjustment and…
Locomotives
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