Bull. U. S. B. F., 1917-18. 



Platk XXXV. 



Fig. I. — The churn used in polishing buttons. 

 (Seep. 77.) 



Fig. 2. — The tumbler employed for buffing blanks or buttons. (See 



P- 74-) 



Fig. 3. — A cutting machine of simple type. (See 

 p. 7I-) 



Fig. 4. — The shaker in which the buttons receive the final 

 polish. (See p. 77.) 



Fig. s.— The belt grinder employed to remove the backs from blanks and bring them to desired thickness. (See p. 74.) 



