Builder's hardware; a manual for architects, builders and house furnishers . locks it. There are several varieties of latch spring flush-bolts, inwhich the knob remains thrown out but can be drawn down bya pull within convenient reach of the hand. Figure 46 illus-trates one such arrangement. P. & F. Corbin also manufacturea latch-spring bolt which is mortised into the edge of the door,and in which the latch bolt is released by pressing on the face-plate. For store doors it is customary to use bolts applied to theface of the door instead of being mortised-in flush. In thiscase the upper bolt is
Builder's hardware; a manual for architects, builders and house furnishers . locks it. There are several varieties of latch spring flush-bolts, inwhich the knob remains thrown out but can be drawn down bya pull within convenient reach of the hand. Figure 46 illus-trates one such arrangement. P. & F. Corbin also manufacturea latch-spring bolt which is mortised into the edge of the door,and in which the latch bolt is released by pressing on the face-plate. For store doors it is customary to use bolts applied to theface of the door instead of being mortised-in flush. In thiscase the upper bolt is attached to a chain which hangs about BOLTS. 39 six feet from the floor. The lower bolt is held up by a spring,but can be pressed down into place with the foot, a spring catchon the face holding the bolt when down. Figures 44 to 46 inclusive,are types of a great varietyof styles manufactured in severaldifferent metals with all kindsof finish and design. It is,therefore, impracticable to givefor these any average prices whichcould serve as fair criterions. Chapter Fig. 46. Extension Latch-Spring Flush-Bolt. P. & F. Corbin.
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Keywords: ., bookcentury1800, bookdecade1890, bookidbuildershard, bookyear1890
