. Steam engines, a thorough and practical presentation of modern steam engine practice . s easy to understand others. Buckeye Type. The valve of the Buckeye engine is hollow andof the slide valve type. The cut-off valve is inside. The change ofcut-off is due to the alteration of the angular advance, the arrange-ment of the parts which effect this alteration being shown in Fig. wheel which contains and supports the various parts of the gov- 156 STEAM ENGINES ernor is keyed to the shaft. Two arms, having weights A A Sit theends, are pivoted to the arms of the wheel b b. The ends having thew
. Steam engines, a thorough and practical presentation of modern steam engine practice . s easy to understand others. Buckeye Type. The valve of the Buckeye engine is hollow andof the slide valve type. The cut-off valve is inside. The change ofcut-off is due to the alteration of the angular advance, the arrange-ment of the parts which effect this alteration being shown in Fig. wheel which contains and supports the various parts of the gov- 156 STEAM ENGINES ernor is keyed to the shaft. Two arms, having weights A A Sit theends, are pivoted to the arms of the wheel b b. The ends having theweights are connected to the collar on the loose eccentric C by meansof rods B B. When the weights move to the position indicated by the dottedlines, the eccentric is turned on the shaft about a quarter of a revo-lution in the direction in which the engine runs, that is, the eccentricis advanced, or the angular advance is increased; this makes cut-offoccur earlier, as shown by the table presented in Valve Gears. Ifthe engine had a single plain slide valve, the variation of the angular. Fig. 94. Diagram Showing Action of Straight-Line Type of Shaft Governor advance would produce too great a variation of lead; but as thisengine has a separate valve for cut-off, admission is not altered bythe cut-off valve. The springs FF balance the centrifugal force of the weights;the weights A A are varied to suit the speed; and the tension onthe springs is altered by means of the screws c c. Auxiliary springsare added in order to obtain the exactness of regulation necessaryfor electric lighting. These springs tend to throw the arms outward,but act only during the inner half of this movement. Straight-Line Typ?. Fig. 94 shows the governor of the Straight-L_-e engine. It has but one ball B, which is linked to the spring S STEAM ENGINES 157 and to the plate DE, on which is the eccentric C. When the ballflies outward in the direction indicated by the arrow F,»the eccentricis shifted about the pivo
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsteamen, bookyear1920
