lift pipe. All these elastic guide rods, which must have the same coefficient of expansion as the castings, are held taut and horizontal by suitable tension nuts, so as to guide the lift pipe without supporting it. To support the lift pipe a casting/, Figure 5, is fixed to its top with a lug on… … Fig. 4.—Wind balance translation mechanism. runs down to, but does not penetrate, the tunnel roof, supports in turn the firm model-bearhig shank, through intermediate mechanism to be described presently under the caption ''Rotation mechanism.'^ The whole translation structure, just described,…
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