AMERICAN INSTITUTE. 



107 



Mif.S 



The cuts, and the following description, are 

 thought to be all that is necessary by way of 

 explanation and illustration, to enable any one 

 to form a correct idea of the " Excelsior Mill." 



A is the hopper in which the material to be 

 ground is placed. B, a conical French burr 

 stone, immovably secured upon the shaft — see 

 the open mill above. BB, the concave stones in 

 two solid pieces, encased in iron, are placed over 

 the cone, fitting it perfectly; these are the grind- 

 ing or milling surfaces. F, the adjusting screw Interior. 

 by which the grinding cone is forced towards the shell to make the mill grind finer 

 or coarser, as may be desired. D, a pulley upon the end of the shaft to which the 

 grinding cone B is attached, and by which it is operated. K is a bolt into which 

 the ground material is passed to separate the ground product into the various 

 grades required — the middlings falling into the bin T, and the fine flour into the 

 bin S, while the bran is passed out of the end of the bolt into a receptacle placed 

 to receive it. The bolt is stationary, but brushes are operated on the inside, to 

 drive the flour through, by a belt passed over the pulley on the main shaft, and 

 over the pulley P on the bolt shaft. 



The advantages of the construction of the conical grinder and divided shell 

 herein described, are, that the mill grinds the best flour or the coarsest feed by a 

 turn of the adjusting screw; that it heats the meal Uss than the flat stone mill; 

 that it can be taken apart and dressed by any person of ordinary intelligence; that 

 it can be operated with less power than any other mill of equal capacity; that it ia 

 more compact, simple, and less liable to get out of order than any other mill now 

 before the public; advantages that will be appreciated by all who have used mills 

 that are complicated in construction, and that require the attendance of a practical 

 and experienced miller or millwright to put theiu in order. 



From actual experiment, made with Wheeler's endless chain railway power, it 

 is found that loith one horsp., three bushels of fine Indian meal per hour can be 

 ground from the hardest corn, which is equal to the work of a four and a half feet 

 flat-stone mill, under an eight feet head of water, on a horizontal wheel. 



Two horses, with Saufwrd's new patented "Anti-friction horse power," will 

 grind with this mill five bushels meal the hour. 



From fifteen hundred to three thousand bushels of corn can be ground with the 

 mills, as delivered, without dressing, after which any intelligent man can put in 

 the same dressing, in a few hours, by using a sharp pick. 



Corn meal and feed mill, ^100 00 



Flouring mill, same size, without bolt, ------ 100 00 



do with our improved bolt, - - - - - 130 00 



Large size flouring mill, without bolt, ------ 170 00 



[ji large silver medal awarded. 



