Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 34
arefully placed be-tween the clips, as shown in the figure, and the wheel P is turneduntil the indicators are in line. The hook lever Y is moved so that 23 14 REINFORCED CONCRETE a screw worm is engaged with its gear. Then open the automaticvalve J so as to allow the shot to run into the cup F. By… … Fig. 6. Cement Testing Machine. * SO that the scale beam is held in position until the briquette is broken.Upon the breaking of the briquette, the scale beam falls and auto-matically closes the valve J. The weight of the shot in the cup Fthen indicates, according to some definite ratio, the stress…
Architecture · Building · Carpentry
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