Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 820
al shaft have theteeth formed upon its* circumference with an angle of 45° to the plane of the axis, it can geer with asimilar wheel B upon a vertical axis. Let it be upon the driving-shaft; then the motion transmittedwill be changed in its direction, as if A and B were a pair of bevels of the… … The contrivance, as stated, is directly a modification of Dr. Hookes geering; but, in effect, it may bedescribed as a modification of the tangent screw and screw-wheel. In this last arrangement, repre-sented by Fig. 2013, in its common form, it will be observed that the plane of the thread…
Mechanical engineering
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