AMERICAN INSTITUTE. 



103 



ducted off by the tube m, to which a small pipe of lead or gutta percha can be 

 attached, if desired, leading to the nearest drain. 



The seat G is made closed at the bottom, to prevent the pressure of the "water 

 from acting upward against lower end of valve F, the entire pressure being merely 

 at the openings, b b, at the side, so that the valve is rendered perfectly tight, with 

 but little pressure from above in addition to its own weight, and consequently 

 works with much greater ease, and is less liable to wear. 



The valve can be readily taken up, in case of any obstruction, by removing the 

 cap from upper part of stock or standard, and raising the spout and pipe D. 



The street washers are constructed on precisely the same principle, with the 

 necessary change in method of attaching hose and operating at level of sidewalk, 

 instead of at top of standard, and are also provided with an arrangement for pre- 

 venting the frost heaving them, thus rendering them very secure under all ordinary 

 circumstances. [^ bronze medal awarded. 



Tohhi's Comhined Grain Separator and Smut Mackijie, 

 Manufacfcurcd by Sandford & Price, Newark, N. J. 



The operation in cleaning is thus : The grain is taken from the elevator to the 

 top sieve C, where the coarse stuff is removed; it then falls on the lower and finer 

 sieve 0, where the sand and fine seeds are taken out; it then passes through hopper 

 M to the first separator J and K — here is the grand point — where an equalized 

 current of air operates on it in such a manner as to admit nothing lighter than the 

 ^ain to pass. Smut balls cannot pass this point; all foreign substance is here 

 removed, and here smut balls are taken out whole, and all taken out, before the 



