aring apparatus is arranged in the simplest and most sub-stantial manner. The burrs are double, having four grindingsurfaces, and made small in diameter for the purpose of doingthe work near the centre, where the leverage is greatest—adecided advantage over single burr mills, having large… … burrs by the shake feed, which distributes it fast when thespeed is high and slow when the speed is down, thus regul-ating the quantity in proportion to the power exerted by thewind force. The Post Grinder is much the best of its class, and willgrind as high as 15 to 20 bushels per hour. If more…
Windmills · Pumping machinery · Industries
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