International Library of Technology · Scranton, International Textbook Co. · leaf 441
the rods e, e, chains are used, as shown in Fig. 9. 8. Tlie T. H. Trolley Stand. — Figs. 11 and 12 show aform of trolley stand that was formerly much used. Fig. 12is a perspective view of the upper member of the stand.On bending the pole to the left, rocker R winds up thestraps attached to the…
Electrical engineering
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