Kidder, Frank E. (Frank Eugene), 1859-1905, Nolan, Thomas, 1857-1926 · New York : W.T. Comstock · leaf 346
tly. The axles of the wheels have ball-bearings whichreduce the friction to a minimum. The doors can also be slightly raised or lowered by an adjustingscrew on the bottom of the hanger. The wooden header shown in Fig. 355 is furnished with the track,so that the putting up of the track is a very… … Fiji- 356. Trolley Tracks.—Another very satisfactory arrangement for hang-ing sliding doors is by means of a trolley track, similar to that shownby Fig. 355 A. The trolleys or wheels which carry the door run inside 344 B UILDING CONS TR U CTION. of the track as shown in Fig. 356. The track being of…
Building
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