g soldered a_ perforated derricks and_ various plate, G, which sup- other uses. ports the bearings for The manufacture of the worm, H. This various materials used worm engages the worm in the ship vard in- wheel, E, and its axis is cludes an extensive prolonged beyend the brass foundry, fully… … 'To perform the work of handling heavy Fig. 3—SECTIONAL VIEW OF EQUAYORIAL STAND. plug, as indicated in the sectional view. materials such as boilers. cannon, ete., a The larger ends of the stopcock casings monster floating derrick has been constructed which will convince the amateur telescopist…
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