180 



CENTEAL SCIENTIFIC CO., CHICAGO, U. S. A. 



No. 3556. 



No. 3562. 



No. 3564. 



No. 3558. 



3556. MILL, Single Assay, with Specimen Jar, for hand or power. Size of assay jar, 8.75x9.65 inches; 

 size of specimen jar, 5.2x5.7 inches; floor space, 14x35 inches; height, 19 inches; size of pulley, 

 9x1 inches; shipping weight, 140 pounds; speed, 60 to 75 r. p. m.; capacity of assay jar, dry, 

 1 ounce to 5 pounds; wet, 1 gallon; capacity of specimen jar, dry, 14 ounce to 1% pounds; we't, 

 i/4 gallon. With handle for hand operation $48.75 



3558. MILL, Double Assay, for hand or power, same as No. 3554, with two porcelain jars, 8.75x9.65, 



mounted to revolve on same axis. Floor space, 14x35 inches; shipping weight, 200 pounds. 

 With pulley 9x1 inch for power, provided with handle for hand operation 67.50 



3559. EXTRA PORCELAIN JARS, 8.75x9.65 inches, with capacity of 1 gallon. For Mills Nos. 3554 



to 3558 each 10.50 



3560. EXTRA PORCELAIN BALLS for Mills Nos. 3544 to 3558. 



Diameter, inches y 2 % 1 



Per pound 60 .60 .50 



3562. MILL, Swift B Drug, for hand operation, easily adjusted to any degree of fine grinding; can be 

 opened, cleaned and closed in 10 seconds without changing degree of fineness as adjusted. Can 

 be used for a variety of materials, such as feed, cereals, roots, herbs, soils, etc. Capacity of 

 hopper, 3 pounds; floor space, 24x24 inches; height over all, 30 inches; diameter of grinders, 

 7% inches; diameter of fly-wheel, 34 inches; weight complete, 115 pounds 35.00 



3564. MILL, Grinding and Pulverizing, for power, with tight and loose pulleys. Can be regulated to 

 grind coarse or fine while running. Adapted for grinding leather samples, cotton seed, cereals, 

 feed, etc. Height, 20 inches; length, 15 inches; speed, 250 r. p. m.; power to operate, % h. p.; 

 capacity of hopper dry, 5 pounds; capacity of grinder, i/j pound per minute; shipping weight, 

 73 pounds 30.00 



3566. MILL, Rolling, Crown, for assay and dental laboratories. Eolls are of crucible steel, ground 

 and polished; pinions are cut from steel bar. Eolls can be easily removed from frame. Di- 

 mensions of rolls: diameter, 2 inches; length, 3 inches. Shipping weight, 54 pounds; dimen- 

 sions of box, 18x11x8 inches 33.00 



3568. MILL, Rolling, Crown, same as No. 3566, but mounted on heavy iron column. Dimensions over 

 all, 49x17x17 inches; shipping weight, 150 pounds 41.00 



