Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 110
Fig. 12.—Universal joiut and miter gear. FiG. 15.—The clock hands. It is inadvisable to section such a space radially, becausethe framework may be confused with the hands. By thearrangement shown, it will be seen that none of this frame-work is parallel with the hands at any point;…
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