. Automotive industries . all working parts, but finally the hour of the exposedlong tappet rod has struck too. In certain engines, suchas the Weidely, the tappet rods extend up through a cham-ber whose walls are cast integral with the cylinder blockwhich gives generally the neatest construction, but mostdesigners cannot convince themselves that the very con-siderable increase in weight necessitated by this construc-tion is warranted. In the Dorris the rods are enclosed in-dividually in tubes extending between the crankcase andan overhanging portion of the head. This, of course, hidesthe movin
. Automotive industries . all working parts, but finally the hour of the exposedlong tappet rod has struck too. In certain engines, suchas the Weidely, the tappet rods extend up through a cham-ber whose walls are cast integral with the cylinder blockwhich gives generally the neatest construction, but mostdesigners cannot convince themselves that the very con-siderable increase in weight necessitated by this construc-tion is warranted. In the Dorris the rods are enclosed in-dividually in tubes extending between the crankcase andan overhanging portion of the head. This, of course, hidesthe moving parts, but it does not give that simplicity ofoutward form which is the aim of many designers. On theBuick and several other cars sheet metal covers are securedover the side of the engine on which the tappet rods arelocated. In the Buick the cylinder block is cast with offsetsoi* steps along the vertical center line at both ends, againstwhich the metal cover fits. The bell housing construction is constantly coming into. To the left—Thermostat on Fergus ear for controlling exhaust Aeroduci casting ovei Sirocco fan on Holmes engine January 13, 1921 AUTOMOTIVE INDUSTRIES THE AUTOMOBILE 55
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectaeronautics, bookyear
