 | Spon E. & F.N., ltd - 1869 - 402 páginas
...plan is traced will be varied. 5640. 5639. 5636. D Fig. 5638. A mode of releasing a sounding weight. When the piece projecting from the bottom of the rod...from under the weight, which drops off and allows tho rod to be lifted without it. Fig. 5639. Union coupling. A is a pipe, with a small flange abutting... | |
 | 1870 - 650 páginas
...the proportion to which the plan is traced will bo varied. 47. A mode of releasing a sounding-weisbt. When the piece projecting from the bottom of the rod strikes the bottom of the sea, it is forced npwards relatively to the rod, and withdraws the catch from under the weight, which drops off and allows... | |
 | Henry T. Brown - 1871 - 168 páginas
...copying, enlarging, and reducing plans, etc. One i arm is attached to and turns on the fixed point, C. B is an ivory tracing-point, and A the pencil. Arranged...flange abutting against the pipe, C, with a screwed end ; B a nut which holds them together. 249. Ball-and-socket joint, arranged for tubing. 250. Anti-friction... | |
 | Edward Spon - 1873 - 398 páginas
...to which the plan is traced will be varied. 5538. Fig. 5638. A mode of releasing a sounding weight. When the piece projecting from the bottom of the rod...drops off and allows the rod to be lifted without it. Fig. 5639. Union coupling. A is a pipe, with a small flange abutting against the pipe C, with a screwed... | |
 | Edward Spon, Oliver Byrne, Ernest Spon, Francis N. Spon - 1874 - 396 páginas
...proportion to which the plan is traced will be varied. Fig. 5638.- A mode of releasing a sounding weight. When the piece projecting from the bottom of the rod strikes the bottom of the si a, it is forced upward relatively to the rod, and withdraws the catch from under the weight. which... | |
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Arranged as shown, if we trace the lines of a plan with the point, B, the pencil will reproduce it double the size. By shifting the slide attached to the fixed point, C, and the slide carrying the pencil along their respective arms, the proportion to... 