. American engineer and railroad journal . ROCKER ARM, VALVE STEM CROSSHEAD AND SUPPORT. depth of 16 in. over the frame. It is also provided with amplewebs and flanges and liberal bearing surface at all points ot con-nection with other parts. The link itself is of case hardenedwrought iron in one piece and is bolted to a cast steel link car-rier, which includes a shaft carried in two bearings placed 20 and secured to the guide yoke. The reverse shaft extendsacross the engine and is carried in two bearings secured just in-side of the outer link bearing. This shaft has two cast steel IS
. American engineer and railroad journal . ROCKER ARM, VALVE STEM CROSSHEAD AND SUPPORT. depth of 16 in. over the frame. It is also provided with amplewebs and flanges and liberal bearing surface at all points ot con-nection with other parts. The link itself is of case hardenedwrought iron in one piece and is bolted to a cast steel link car-rier, which includes a shaft carried in two bearings placed 20 and secured to the guide yoke. The reverse shaft extendsacross the engine and is carried in two bearings secured just in-side of the outer link bearing. This shaft has two cast steel IS AMERICAN ENGINEER AND RAILROAD January, 1908. AMERICAN ENGINEER AND RAILROAD JOURNAL. 19 arms curved tn clear the link and connect to the end of theradius bar back of the link. It alsp has a downwardly extend-ing arm near the center which is connected to an arm nn a re-verse shaft, located in the standard position for the Stephensonlink motion, which carries the counterbalance spring and con-nects to the reverse lever. The radius bar, shown in one of the illustrations, is providedwith a fork on either end, the forward one spanning the top ofthe combination lever and the hack one spanning the link andlink block. The eccentric rod, which is 6 ft. io o/io in. longbetween centers is pinned to the extension on the link and hasa split brass bearing at its connection with the eccentric wedge block is provided for taking up the wear in the brass. The eccentric crank connection to the main pin consists of 41 .. in. in diameter and 3 in. high, which has a taper anddraw lit in a recess in the main pin and is dr
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
