266 University Geological Survey of Kansas. 
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Fig. 49. Form of Blake crusher used in the district and made by local foundries. 
material are those which fall between the jaws when the 
toggle plates form the smallest and largest angles with each 
other, and range from one-half inch up to one and one-half 
and two inches. 
The heads of the casings, fF and L, are hollow and have 
babbitted bearings on one side only, 7. e., that side on which 
the pressure is applied, which is the upper side. 
The heavy balance wheels, XY and Y, are fastened to the 
shaft, A, on either side of the crusher frame, and maintain a 
uniform motion by the energy thus stored up. A pulley, W, 
