Woodwork for secondary schools; a text-book for high schools and colleges, prevocational and elementary industrial schools (1916)
Griffith, Ira Samuel, 1874-1924 · Peoria, Ill., Manual Arts Press · leaf 130
standard. The shaper is a very high speed machine the spindlerunning from 4,500 to 6,500 R. P. M. Two H. P. isordinarily required. Fig. 197 is an example of a single-spindle machine.The double-spindle machines have two spindles made torevolve in opposite directions so that the operator mayquickly… … Fig. 198.Shaper Collars and Cutters. 126 WOODWORK FOR SECONDARY SCHOOLS. spindle, accomplished by a peculiar form of friction coun-tershaft as shown in the illustration. By means of a footcontrol the operator can throw the driving shaft against_ one or the other of the disks which will cause the…
Woodwork (Manual training)
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