Builder's hardware; a manual for architects, builders and house furnishers . be bent ortwisted in all directions without knottingor kinking, a quality which the Smith &Egge chain does not possess. The Sol-id Link chain can even be tied into aknot without kinking. Figure 171 willgive an idea of the construction of the link. This form ofsash-chain requires no special pulley, but will run over anordinary grooved-wheel. An entirely different kind of sash-cord is shown by Figure172. This consists of a steel wire spring so closely andstrongly coiled as to have the resistance necessary to sustainany
Builder's hardware; a manual for architects, builders and house furnishers . be bent ortwisted in all directions without knottingor kinking, a quality which the Smith &Egge chain does not possess. The Sol-id Link chain can even be tied into aknot without kinking. Figure 171 willgive an idea of the construction of the link. This form ofsash-chain requires no special pulley, but will run over anordinary grooved-wheel. An entirely different kind of sash-cord is shown by Figure172. This consists of a steel wire spring so closely andstrongly coiled as to have the resistance necessary to sustainany sash weighing sixty pounds or less. It has a stretching-capacity of only about five per cent. It enables the sash torest easily and lightly on the pulleys, and enables it to beraised or lowered with half the effort required with ropesash-cord. It is fastened at one end to the sash by aneye or ring, and to the weight in the manner shown by thefigure. The following table gives the average, comparative, retailprices per foot of the various makes and sizes of sash-chains:. Acme Belting Co. PULLEYS. TABLE OF SASH-CHAIXS.— PRICES IX CENTS. Description of chain. Smith & Egges plumberslink, Giant-metal Smith & Egges plumberslink, Ked-metal Smith & Egges plumberslink, Smith & Egges plumberslink, steel, black enam-elled Mortons plumbers link,Champion-metal Mortons plumbers link,steel Mortons cable-chain, copper Mortons cable-chain,steel Solid-link chain1, brass — Solid-link chain, silver-plated Acme sash-cord For sashes or doors weighing 4. it 814 16 ?jo 117 Chapter VII. SASH-BALANCES. The inconveniences attending the use of weights and pulleysfor raising sashes, while in most cases due to bad workman-ship in setting the pulleys and inrperfect arrangement of theboxes rather than to any intrinsic deficiencies in the sys-tem, have given rise to several so-called sash-balances, whichare intended to permit of weights, boxes and
Size: 1040px × 2403px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookidbuildershard, bookyear1890
