. An encyclopædia of agriculture : comprising the theory and practice of the valuation, transfer, laying out, improvement, and management of landed property, and of the cultivation and economy of the animal and vegetable productions of agriculture. ded for seed,or such wheat, meant for the market, as had agreat proportion of smut in it. {Stevensons Sur-rey, p. 141.)*2797. Mitchells hummelling machine (j?) is the invention of a millwright ofthat name in the neighbourhood of Elgin, and it has been very generally added tothreshing machines, in the barley districts of Scotland, for the purpo
. An encyclopædia of agriculture : comprising the theory and practice of the valuation, transfer, laying out, improvement, and management of landed property, and of the cultivation and economy of the animal and vegetable productions of agriculture. ded for seed,or such wheat, meant for the market, as had agreat proportion of smut in it. {Stevensons Sur-rey, p. 141.)*2797. Mitchells hummelling machine (j?) is the invention of a millwright ofthat name in the neighbourhood of Elgin, and it has been very generally added tothreshing machines, in the barley districts of Scotland, for the purpose of separating theawns from the grains of barley. It operates on the scutching principle, and is composedof a scutcher consisting of a spindle, at the top of which is fixed a wheel for putting it inmotion, and between this wheel and its lower extremity three tier of scutching arms (a) ;each scutcher is composed of two pieces forming a cross (6), and bevelled at the edges toprevent them from cutting the barley in the operation of hummelling (c). The scutcherrevolves in a cylinder {d), into which the barley passes through a spout {e e) from a hopperplaced over the machine. The cylinder may either be of wood or cast iron, and the frame- Ff 4. 4 feet 4-10 SCIENCE OF AGRICULTURE. Rart II. work whfch supports it (/) may be of cither, or of both of these metals. (Farm. xiii.) 404
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Keywords: ., bookcentury1800, bookdecade1870, bookpublisherlondo, bookyear1871
