Builder's hardware; a manual for architects, builders and house furnishers . stly made of wrought-iron and are not aptto break, while there is absolutely nothing to get out of orderabout them. The disadvantages are that they contain in them-selves no principle which will hold the blind open or shut,and when it is secured in the ordinary way it takes considerablebending and twisting to close the blindafter it is opened. To overcomethese difficulties a number of formshave been devised, most of which areused more freely in the West than inthe East. All of them are arrangedto keep the blind from c
Builder's hardware; a manual for architects, builders and house furnishers . stly made of wrought-iron and are not aptto break, while there is absolutely nothing to get out of orderabout them. The disadvantages are that they contain in them-selves no principle which will hold the blind open or shut,and when it is secured in the ordinary way it takes considerablebending and twisting to close the blindafter it is opened. To overcomethese difficulties a number of formshave been devised, most of which areused more freely in the West than inthe East. All of them are arrangedto keep the blind from closing itself. Fig. 77. Screw are generally made of malleable-iron, a feature whichwould be an objection in the eyes of Eastern of the simplest forms is the Seymour hinge, manufact-ured by P. & F. Corbin, Figure 79. The essential princi-ple in this hinge includes a raised cone on the house-hingeworking into a socket on the blind-hinge. The hinge is shownpartially raised and in the position it takes when the blind is Chapter V. G~3S£tt£$». PatentBlind-Hinges. Fig. 78. Screw Brace Blind-Hook. Fig. 79. Seymours & F. Corbin. closed. When the blind is thrown back a lip on the upperhinge catches on a projection on the lower hinge and holdsthe blind firmly in place, so that it can be released only by rais-ing the blind bodily. The Shepard Hardware Co., of Buffalo, manufactures a num- 56 BUILDERS HARDWARE. Chapter V. Sliepard Hinges. ber of varieties of window-blind hinges which are used quiteextensively. All of them are double locking and arranged sothat the blind can be lifted off the hinge only in one position,thus obviating any upsetting of the blind when trying to closeit. Most of the Shepard hinges close by gravity when once
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