AUTOMATIC MACHINE GAGING 



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surface into the center of which is inserted a small carbon block having 

 a face 0.0370 in. x 0.1 10 in., cemented in with a low melting point glass. 

 The face of the carbon block is underflush with the rim of the porcelain 

 block, Fig. 12 (a). 



Fig. 11 



As shown in Fig. 11, the blocks are being stacked by hand in the 

 top of a vertical chute from which they are automatically fed to the 

 machine at the bottom, but the feeding arrangement shown separately 

 in Fig. 13 is now being added. This consists of a rotating disc having 

 two V-shaped grooves in the surface and above it a stationary plate 

 having a spiral slot. The operator places the blocks rear side up (by 



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