. Annals of applied biology. Biology, Economic; Biochemistry. 44 The Dalhy Profile Recorder pencil P on the end of another arm. Mechanism connects the two arms so that the vertical movement of R is changed into a horizontal movement of the pencil in a direction at right angles to the direction of motion of the stock. To draw a profile curve the stock is placed on the guide frame GG and the mechanism is locked in a zero position by turning the milled head L seen at the lower part of Fig*. 5. The roller is clamped clear of the surface. The pencil is then lowered on to the paper and the stock. Fi
. Annals of applied biology. Biology, Economic; Biochemistry. 44 The Dalhy Profile Recorder pencil P on the end of another arm. Mechanism connects the two arms so that the vertical movement of R is changed into a horizontal movement of the pencil in a direction at right angles to the direction of motion of the stock. To draw a profile curve the stock is placed on the guide frame GG and the mechanism is locked in a zero position by turning the milled head L seen at the lower part of Fig*. 5. The roller is clamped clear of the surface. The pencil is then lowered on to the paper and the stock. Fig. 4 is pushed along the guide rods by force applied to the handle JJ. The pencil then draws a straight datum line. The roller is then lowered into contact with the timber surface at a point of the path nearest to a clamping point and this point is marked Z. This point defines the position of the plane of reference, and the datum line already drawn lies in it. The lock is then released by turning the head L and the stock is drawn or pushed along the guide bars. The roller now follows the unevenness of the surface along the path which it is compelled to follow and the pencil P draws automatically the curve giving the shape of. 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 Association of Applied Biologists; Association of Economic Biologists. [Wellesbourne, Warwick, etc. ] Association of Applied Biologists [etc. ]
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Keywords: ., bookcentury1900, bookcol, bookdecade1910, booksubjectbiochemistry
