Builder's hardware; a manual for architects, builders and house furnishers . 15o Chapter IX. Fig. 252. Mallorys Shutter-worker. Fig. 253. Browns Shutter-worker. IrelandFrank B. Mallory. Mfg. Co. stand why such devices are used so little, but it must be 156 BUILDERS HARDWARE. Chapter ix. admitted, that all of those now in the market are more or lessclumsy. Still, the idea is an excellent one, and if there weregreater demand for such appliances, undoubtedly better oneswould be put before the public. The shutter-worker of thisdescription that is the most natural in its adjustment is illus-trated
Builder's hardware; a manual for architects, builders and house furnishers . 15o Chapter IX. Fig. 252. Mallorys Shutter-worker. Fig. 253. Browns Shutter-worker. IrelandFrank B. Mallory. Mfg. Co. stand why such devices are used so little, but it must be 156 BUILDERS HARDWARE. Chapter ix. admitted, that all of those now in the market are more or lessclumsy. Still, the idea is an excellent one, and if there weregreater demand for such appliances, undoubtedly better oneswould be put before the public. The shutter-worker of thisdescription that is the most natural in its adjustment is illus-trated by Figure 252. This consists simply of a rod, at the. Fig. 254. Automatic Shutter-worker. Dudley Shutter-Worker Co. end of which is a thread working against a cog-wheel forminga part of the bottom hinge of the blind. On account of the slowness of pitch of the thread,it is very difficult to move theblind from the outside, but the lev-erage is sufficiently strong toV enable one to easily open theblind from within by turningthe crank. A very similar appliance tothis is the Brown shutter-worker,Fig. 255. Brockton shutter-worker. Figure 253, in which the thread Tyler Mfg. Co. on the spindle works into teeth onthe bottom of a plate forming a part of the lower shutter-hinge.
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