| Date | Text | |
|---|---|---|
30 Nov 1875
Black American patent |
Black American patent In 1875, a U.S. patent was issued for a "Biscuit Cutter" was issued to black American inventor Alexander P. Ashbourne (No. 170,460). The device consisted of a number of metal cutters, which could have various plain or fancy shapes, mounted on a hinged plate attached to a molding board on which dough for cake or biscuits would be rolled out. The plate was then closed over the dough, allowing the cutters to cut through the dough, forming many shapes simultaneously. When the hinged plate was lifted, to simplify removal of the cut shapes, each cutter contained a spring-loaded plate of similar shape to eject the cut dough. Provision was made to store the rolling pin in a concave cross-bar along the back of the hinges. |
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30 Nov 1875
Oat-crushing machine |
Oat-crushing machine In 1875, the first U.S. patent for an oat-crushing machine was issued to Asmus.J. Ehrrichson, of Akron, Ohio (No. 170,536). The patent description gave that previously this had been done "by crushing the grain between rollers, or grinding with burrs or millstones, and subsequently screening ... into different grades." This, it said, resulted in inferior quality due to excessive amounts of flour that was too fine. The invention instead used a series of horizontal knives fixed in a frame through which oats fall from a hopper with a perforated metal bottom. Lateral motion of the hopper causes grain moving through the holes to be sheared against the knives thus producing a desirable coarse grain meal. |
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