Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 454
installing them to have themin perfect alignment and the joints very even; and maple, being awood that is prone to warp, has to be put on in short pieces, theusual lengths being about four feet. The ends of these guides aretongued and grooved to fit into one another, and where the guideposts, to… … which run on these guides are usually machined to iit, and aremade as smooth as possible at their faces of contact. The device generally used for stopping the cage in case of asudden descent, caused either by the breakage of the cables toM-hich the car is suspended or by the derangement of any part…
Architecture · Building · Carpentry
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