. Steam engines, a thorough and practical presentation of modern steam engine practice . Fig. 92. STEAM ENGINES 155 pose. Cut-off governors, which are called shaft governors becausethey are placed on the main shaft; are made in many forms, but theiressential features are the same. Two pivoted masses or weightsare arranged symmetrically on opposite sides of the shaft and theirtendency to fly outward when the speed increases is resisted bysprings. Wlien in action the outward motion of the weights causesthe admission valve to close earlier, and the inward motion causesit to close later. This chan
. Steam engines, a thorough and practical presentation of modern steam engine practice . Fig. 92. STEAM ENGINES 155 pose. Cut-off governors, which are called shaft governors becausethey are placed on the main shaft; are made in many forms, but theiressential features are the same. Two pivoted masses or weightsare arranged symmetrically on opposite sides of the shaft and theirtendency to fly outward when the speed increases is resisted bysprings. Wlien in action the outward motion of the weights causesthe admission valve to close earlier, and the inward motion causesit to close later. This change is effected by altering the position of. Fig. 93. Diagram Showing Action of Buckeye Shaft Governor the eccentric, either by changing the eccentricity or the angularadvance. Shaft governors are made in a great variety of ways, no twobeing exactly alike. If the principles of a few types are understood,it is 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 th
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsteamen, bookyear1920
