Cyclopedia of architecture, carpentry, and building : a general reference work . they work unsatisfactorily. By the use ofcombinations of these pulleys, the cord can be carried an indefinitedistance to a box capable of receiving a large iron weight, and 343 32 HARDWARE the width of the mulUon can be reduced to the minimum thick- ness. Sash-cord is a very important item, and braided cotton cord isprobably the cheapest in the long run. It is better to get a smallrather than a large size. The wearing of the cord is due to the factthat in passing over the pulley the inside or the part against the
Cyclopedia of architecture, carpentry, and building : a general reference work . they work unsatisfactorily. By the use ofcombinations of these pulleys, the cord can be carried an indefinitedistance to a box capable of receiving a large iron weight, and 343 32 HARDWARE the width of the mulUon can be reduced to the minimum thick- ness. Sash-cord is a very important item, and braided cotton cord isprobably the cheapest in the long run. It is better to get a smallrather than a large size. The wearing of the cord is due to the factthat in passing over the pulley the inside or the part against the wheelis compressed or crimped, while the opposite side is stretched, thusproducing a constant wear and strain of the fibre of the cord, whichfinally breaks it down. It will be evident that this disintegratingaction will increase wnth the larger diameter of the cord. A cordjust large enough to hold the weight safely, is the best. A simpletest is to suspend four of the heaviest weights to be used, by one cord;if it will hold them, it is sufficient size to carry the one Fig. 49. Pulley Arrangement for Carrying Sash Cord to Distant Boxes. Taken as a whole, the window—with its lock which rarely works,its exasperating pulls, and its sash-cord broken when most needed —•is one of the oldest, and still one of the greatest, of modern incon-veniences. Undoubtedly the first step necessary to make the windowmore satisfactory, it to make the sash narrower and cut the glasssmaller, with substantial muntins, so that the sash will be firm. This,with a little better workmanship on the frames, will, with presentappliances, make a very satisfactory window. MISCELLANEOUS HARDWARE Bolts. The bolt is one of the oldest and simplest contrivancesfor securing different parts in a desired position, and is still a mostnecessary item of hardware. Here, weight of metal counts for asmuch as, if not for more than, in most other items of weight should be balanced in the different pa
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Keywords: ., bo, bookcentury1900, booksubjectarchitecture, booksubjectbuilding
