Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise .. (1916)
Swingle, Calvin F. (Calvin Franklin), b. 1846 · Chicago, F.J. Drake & company · leaf 998
so great as to prevent the car from attaining itsfull velocity. If a hard packing is used, and this is forcedinto place dry and very tight, the chances are that when itbecomes well soaked it will expand enough to burst thecylinder. Bursting hydraulic-elevator C3dinders is not avery rare occurrence,… … Fig. 398 964 Steam Engineering Keferring to Fig. 389, it will be noticed that there aretwo piston rods, E. This construction was -adopted in the early days of hy-draulic elevators partially to increase the safety of theapparatus, but principally to prevent the traveling sheaveB from twisting…
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten10unit-215-162.webp)
