. Circular. Agriculture; Agriculture -- United States. A HAND GRAIN By Lyman J. Briggs, Bio physicist in charge of Biophysical Investigations. The simple hand thrasher shown in the accompanying illustration (fig. 1) has proved so useful in thrashing small quantities of grain in water-requirement investigations that a description of it may be of interest in connection with head-to-row experiments and similar inves- tigations. As in other types of hand machines, the grain is thrashed by passing it between a rotating rubber-covered cylinder and a sta- tionary apron. The novel features
. Circular. Agriculture; Agriculture -- United States. A HAND GRAIN By Lyman J. Briggs, Bio physicist in charge of Biophysical Investigations. The simple hand thrasher shown in the accompanying illustration (fig. 1) has proved so useful in thrashing small quantities of grain in water-requirement investigations that a description of it may be of interest in connection with head-to-row experiments and similar inves- tigations. As in other types of hand machines, the grain is thrashed by passing it between a rotating rubber-covered cylinder and a sta- tionary apron. The novel features include means for adjusting the. Fig. 1.—A hand grain thrasher. tension of the apron against the cylinder and a provision for the rapid cleaning of the machine. The frame of the machine is built of steel, so as to give an open construction for convenience in cleaning, and is securely fastened t its table. The cylinder is built up from disks of wood 2 inches thick, glued together. The shaft is then forced into place and the cylinder turned true on its shaft. This wooden cylinder is then covered with a good quality of rubber matting, the corrugations being parallel i Issued Mar. 29,1913. ICir. X19] 23. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Bureau of Plant Industry. Washington, D. C. : U. S. Dept. of Agriculture, Bureau of Plant Industry
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Keywords: ., bookcentury1900, bookdecade1900, booksubj, booksubjectagriculture
