Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 631
and the concave surface of the disk it lies. No axis passes through it, so that a loop of thread canpass around it as around the small ball of thread in the last diagram. By the revolution of the hooksifter entering the loop of the upper thread, this loop is enlarged and carried forward. Fig. 3323…
Mechanical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
