Builder's hardware; a manual for architects, builders and house furnishers . 45, but has, inaddition, a locking-lever, operated by a key, which secures thecatch so that the blind cannot be opened. SII UTTER-FIXTURES. 153 BLIND-FASTENERS. There are a number of forms of blind-hinges, which havebeen previously described in the chapter on hinges, that in ameasure serve as blind-fasteners, keepingthe blind either open or shut. They areall perfectly simple in their operations,and it is difficult to discriminate betweenthem. The common fault with themall is in the difficulty of opening andclosing the
Builder's hardware; a manual for architects, builders and house furnishers . 45, but has, inaddition, a locking-lever, operated by a key, which secures thecatch so that the blind cannot be opened. SII UTTER-FIXTURES. 153 BLIND-FASTENERS. There are a number of forms of blind-hinges, which havebeen previously described in the chapter on hinges, that in ameasure serve as blind-fasteners, keepingthe blind either open or shut. They areall perfectly simple in their operations,and it is difficult to discriminate betweenthem. The common fault with themall is in the difficulty of opening andclosing the blind. With most of theforms of patent self-locking blind-hinge,the blind must be raised from its seat inorder to be swung around. With theblind-fasts previously described in thischapter, it is necessary to lean far outof the window to release the catch fromunderneath. Figure 248 shows a deviceintended to overcome the difficulties ofboth styles. It consists simply of a lever attached to the blind,and hooking into a plate screwed onto the jamb of the window. Chapter 1X„.
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