194 



HANDBOOK OF MECHANICAL DESIGN 



, Locking plunger 



Handle 



Pinion mounfed 

 ^ on rocker arm 

 and driven by D 

 engages clionge 

 gears 



— Rocker arm 



^^''Locking plunger 

 engages Ihese 

 nolches 



Splined shaft 

 drives gears 

 Dandt 



-Locking plunger 

 I engages Ihese 

 I notches when 



driving of her 



idler gears 



Fig. 382. 



Sec+ionX-X 



Cam keyed 

 to shall B 



Sec+ion Y-Y 



Lever mounied on 

 same shall B as cam 



'Dwell 



' Rolalion of cam moves 

 yokes to engage clusier gears 



Fig. 383. 



Circular rack enq _, 

 fastened lo hollow's ha f I fo 

 which is allached shifling bar 



Section T^ 

 ". "-^ Y-Y 



Change gears separaled 

 by hardened ana ground 

 washers ^ 



'Pivoi 



33 - Hardened and 

 ground sliding 

 key 



Section X"X 

 Fig. 384. 



