5 



Floor space, 22 x 22". Diameter to pulley, 9%". Faco of pulloy, 6". Height from floor to centro of 

 pulley, 1H". Height from floor to top of hopper, 48". Opening in mill, A\" diameter. Height from floor 

 to bottom of spout, 22". Net weight of mill complete, 575 lbs. Gross weight of mill complete boxed, 750 lbs. 

 Power to run 3 to 5 horse. Price, $240.00, F. 0. B., N. Y. 



Sectional View of No. 2 Okioinal Bogardus' Patent Universal Eccentric Mill, with Patented Improve- 

 ments and Plates giving detailed Description of Mill, with Name of each Part. 



Nos. 5 and 8 Mills are similar to No. 2. 



b 



The body of the Mill consists of a Cast Iron Frame, upon which rests the Pan, upon which is placed the 

 Cover and bolted to the pan by means of side bolts. On the underside of the cover a steel ring called the 

 6teel for cover is fastened, which rests upon the neutral ring I. I. 



I. I. — Neutral Eing. 



X, — Shoe, which is held in position by meana of a 



spring, called the Hopper Spring. 

 M. — Bottom Lever. 

 O. — Hopper. 



P. — Steel Lining and Button in Step. 

 Q. — Cast Iron Cup in Step. 

 R. R.— Shaft Plate. 



A. — Ball Weight Lever. 



B. — Ball Weight. 



C. C. — Bottom Grinding Plate. 



D. D. — Ring Plate. 



E. — Adjusting Screw. 



F. F. — Nut. 



G. — Cast Iron Step. 



H. — Bearing Box. 



Figure 1 is a sectional view of Mill No. 2 for grinding dry substances. The power operating the Mill 

 is applied by means of a belt and pulley attached to the shaft, which is vertical. To the top of the Shaft 

 the Shaft Plate (B B) is fixed, and upon the Shaft Plate the Bottom Mill Plate (C C) is laid, being kept into 

 position by projecting pins. The Bottom Plates, or the substance between the Plates communicates motion 

 to the Top Plate which is fastened by bolts and pins to the Bevolving Collar. This Revolving Collar is made 

 up in two parts, the Ring Plate (D D) and the Nut (F F) ; and a third part the Neutral Bing (I I), so called 

 from the fact that it is immaterial whether it revolves or not. Upon this Bing the wear and tear of the Mill 

 are mainly thrown. The Shoe (L) acts against the Nut (F F) which causes it to vibrate, and this vibration 

 hastens the supply of material fed to the Plate to the extent allowed by the Slide in the Hopper 0. J is an 

 Oil Chamber ; H, the bearing box of the Mill Shaft ; G, the cast iron step ; P, the steel lining in a cast iron cup ; 

 Q with steel button on which the shaft revolves. The degree of fineness or coarseness is regulated by means 

 of a screw and lever acting upon the Step Q. E is the Adjusting Screw. A the lever, with the fulcrum K, 

 and connected by means of a connecting rod, represented by the dotted lines in the Stand, with a lever which 

 acts directly upon the Step. The weight B, by means of these levers, would keep the plates in close contact, 

 but their distance apart is regulated by the screw E. As will bo immediately perceived, when iron or any 

 kindred substance passes between the plates, or any substance harder than that which the plates are regulated 

 to gi-ind, the lower plate yields and allows it to pass out. In putting the cover on the Mill the word 

 "Eccentric" must come to the front (over the spout). 



Figure 2 represents the plates used in this Mill ; a is the upper, c the lower plate. The vertical view, in 

 which are marked c, d, represents the position they occupy in reference to each other. From the position of 

 the two centres it is named the Eccentric Mill. The circles whioh are cut in the plates act as revolving 

 shears, cutting every way with a peculiar cutting, wrenching, twisting, and sliding motion, admirably adapted 

 to every species of grinding. In order to meet every possible necessity, the faces of the plates are variously 

 formed for different purposes, all, however, conforming to the general principle. 



