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 878
2094. … one shaft being jointed to the arms a a,and the extremities of the arc on the othershaft on the arms 6 6, at right angles tothe former. But this simple mode of construction is not adequate to the purposesfor which the coupling is required in aline of shaft-geenng; in this case, al-though the…
Mechanical engineering
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