Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 432
plunger when arranging theproportions of cylinder andplunger, in relation to thepressure of water to be used. The earlier elevators ofthis type were usually uiadewith a cast-iron plunger,which as before stated, was hollow, and, owing to the brittlenessof cast iron, had to be re-enforced by running… … Longer- Landing Fig. 10. Plunger Elevator. 333 20 ELEVATORS opening of the operating valve would allow the escape of waterfrom the cylinder for descent, and when the cage was in the upperstory it was lialde to cause the plunger to break off. Such anaccident as this occurred some years ago in Paris,…
Architecture · Building · Carpentry
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