. Railway master mechanic [microform] . Fig. 2. 482 RAILWAY MASTER MECHANIC December, 1909. Fig. 3. of valve, and the length of the link and radius rods areenough to advance the valve to the point of opening. Itwill be seen here that if the point of attachment of theradius rod to the lap and lead lever were stationary, whilethe crosshead moved forward the valve would move back-ward as the lap and lead lever would fulcrum at the pointof attachment. But in this case the link block being in thebottom of the link, the motion of the valve crank is trans-mitted direct to the valve and the upper end
. Railway master mechanic [microform] . Fig. 2. 482 RAILWAY MASTER MECHANIC December, 1909. Fig. 3. of valve, and the length of the link and radius rods areenough to advance the valve to the point of opening. Itwill be seen here that if the point of attachment of theradius rod to the lap and lead lever were stationary, whilethe crosshead moved forward the valve would move back-ward as the lap and lead lever would fulcrum at the pointof attachment. But in this case the link block being in thebottom of the link, the motion of the valve crank is trans-mitted direct to the valve and the upper end of the lap andlead lever moves proportionately in the same direction asthe crosshead until the extreme travel of valve in that direc-tion is reached. This is shown in Figure 2. Here the maincrank and crosshead have reached half-stroke and the valvecrank and valve are at their extreme positions forward. It will be noticed that from this point that the upper endof the lap and lead lever will move back away from thecylinder carrying the valve back toward the point of cut-offon the crank en
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyo, bookyear1895
