Taggart, William Scott · London : George Routledge & Sons, Ltd. · leaf 120
= 3iP sixth „ = 32? >> = 63? It will be seen that the totalweight in each case is equal totwo raised to the power of thenumber of the cords or pulleysminus i or 2—i=W, where n-=number of cords or pulleys. InFief. 160 the cords are three innumber, so that 2^—1=7, themechanical ratio and the… … n<t.i6Q Weston Pulley Block.—This is a pulley arrangement muchused for hoisting purposes. Fig. 161 shows the arrangement ina diagrammatic form. V//m/////m/////M v//////////m:}
Textile machinery
Internet Archive · UMass Dartmouth, Claire T. Carney Library · Public Domain Mark 1.0. Free to use for anything.
