t at the end of the shaft Specification of a patent for an improvement in the mode of making Harrows for the purposes of agriculture , called Revolving Har¬ rows. Granted to Samuel Rugg, Lancaster , Worcester county , Massachusetts , January 11, 1831. This improvement in the harrow is more… … In the drawing, A, A, are two horizontal bars forming a triangle, and joined at B. B, is the forward part of the harrow. C, C, the junctions of the bars at the other end of the frame and with A, A, and B, constituting the whole frame. D, a brace running from B, to a middle point between C, C, and…
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