AUTOMATIC MACHINE GAGING 



725 



The main shaft of the machine can be seen at A, which drives the 

 disc B through worm gears. When the units are attached the pin K 

 engages a slot on a disc attached to the rear of the unit shaft /. At- 

 tached to the front end of the same shaft are two eccentrics // (shown 

 in Fig. 20) which operate the feeding device located just back of the 

 blocks shown in the illustration, Figs. 10 and 11. 



Fig. 18 



The feeding mechanism (Fig. 20) is of the finger bar type consisting 

 of two reciprocating bars A and B, both having the same travel. 



Fig. 20 indicates the relative position of the driving parts. Finger 

 bar A is operated by a bell crank gear segment and eccentric properly 

 timed to step the protector blocks to the gaging position immediately 

 prior to the gaging operation. 



Feed fingers C are so located in this finger bar that the protector 

 blocks are centrally located under the gage when the finger bar comes 

 to rest at its forward position. 



