The center of the mill pulley and driver must not be in line, but as follows: When the reel belt plan is adopted, place the center of the mill pulley four or five inches below the top of the driving pulley that runs from the mill, and the side of the mill pulley that runs towards the driving pulley in line with the center of the driving pulley, then place the idle or tightning pulley in a sliding frame on the under side of the slack belt near the driving pulley, and of the proper height and angle to lead the belt squarely on the mill pulley.
When locating the mill to run by “quarter twist belt,” place thus: Upper or lower side of the driving pulley, which runs towards the mill, should be five or six inches above the center of the burr pulley, and the side of the burr pulley that runs towards the driving pulley must be in a line with its center. In attaching the bolt it will be observed that its position depends somewhat upon how the elevator foot and cooling conveyor are placed. It will be found best in most situations to put the cooling conveyor and elevator foot entirely below the floor. It is a good plan to set the Portable or in fact any kind of a mill on a foundation entirely below and independent from the floor of the house. The reel belt plan of driving from a pulley on a horizontal shaft, even if a large one, will make no edge strain on the belt whatever, and in stopping and starting is of great convenience. We have it shown in a small way in the cut, Fig. 3, under head of “Complete Grinding and Bolting Mills.” Where we furnish the mills, we always, when requested to do so, send draft and plans showing how to set up and arrange all, so that it will be a success, and without additional charge.
GEARED MILLS
Are furnished with wood and iron gearing—wooden cogs in the driving wheel. This does away with the noise and deafening clatter of the ordinary, or all iron geared mills. (See under head of “Gearing,” and “Under Runner Geared Mills.”) These cogs are of wide face, thus having a large bearing surface, and wear but slowly. Where there is one mill the shaft is long enough to receive the pulley and one journal box outside. We often put three run of burrs, two wheat and one corn, upon one continuous shaft. This makes a very compact arrangement. In this case the mills are detached by slipping the pinion or wheel out of gear, on a sleeve provided for the purpose.
SINGLE REEL BOLT.
Lower part of Elevator and Cooling Conveyor not shown.