Builder's hardware; a manual for architects, builders and house furnishers . 151 Chapter IX. Fig. 244. Drop-and-Pin-fast. Stanley Works. customary to use some form of turn-buckle, Figure 243, which Turn-buckles,is driven into the joints of the brickwork, the cross-piece being 152 BUILDERS HARDWARE. Chapter ix. free to turn, but hanging naturally in a vertical position byreason of the greater weight of the longer arm. Turn-bucklesof a slightly different shape are sometimes used, also, for . wooden buildings. All of the foregoing are, in a certain sense, automatic; thatis to say, the blind, if f
Builder's hardware; a manual for architects, builders and house furnishers . 151 Chapter IX. Fig. 244. Drop-and-Pin-fast. Stanley Works. customary to use some form of turn-buckle, Figure 243, which Turn-buckles,is driven into the joints of the brickwork, the cross-piece being 152 BUILDERS HARDWARE. Chapter ix. free to turn, but hanging naturally in a vertical position byreason of the greater weight of the longer arm. Turn-bucklesof a slightly different shape are sometimes used, also, for . wooden buildings. All of the foregoing are, in a certain sense, automatic; thatis to say, the blind, if flung open or shut will stay in posi-tion, requiring no specialadjustment. Figure 244is a form of drop-and-. Fig. 245. Seymours & F. Corbin. Fig. 246. Blind-catch. Fig. 247. SeymoursShepard Hardware Blind catch and lock. Co. P. & F. Corbin. pin fast, much used in some cases, consisting simply of aplate secured to the blind by a screw-eye, perforated with ahole to fit over the pin driven into the sill. For holding theblind open, a back catch is made as shown by the figure, whichlocks with a plain, flat spring, screwed to the under side of theblind. The figure also shows the form of back catch used forbrick buildings. Figures 245 and 246 show two very simple forms of blindcatch serving only to keep the blind closed, and generally usedwith some form of turn-buckle to hold the blind open. Figure 245 works with the aid of a small spring, as shown; Figure 246 works entirely by gravity. There are several varieties ofeach of these forms in the market. The catch shown by Fig-ure 247 acts in the same manner as Figure 245, but has, inaddition, a locking-lever, operated by a key,
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