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DAIRY LABORATORY GUIDE 



Elevator for carrying boxes, etc., to attic. 

 The milli can elevator invented by 0. B. Schier, 

 of Baltimore, consists of two endless chains running 



Fig. 50. — Milk Can Elevator. Upper Floor 



over sprocket wheels, connected by a single shaft at 

 the lower end in such a way that both chains must 

 travel at the same speed. Between the chains are 

 suspended on swivel links a number of swinging 



