Popular science monthly . erceptibly by differences inthe weight of passengers. riie apparatus can be secured to anywindow. An iron plate is securelybolted to the window-frame or fastenedto the stonework. When a fire breaksout the apparatus is swung out of thewinck)w on the iron plate. The entireweight isonlyaboul twenty- twopoiuids. To escaiie from aburning building, youfirst put on a leatherbelt and slip a safel\-ht)ok on the wire ropeof the apparatusinto a ring onthe belt. Thenyou mount thew i n d o w s i 11,swing out thecrane, and stepinto you reachthe ground, youslip off the be
Popular science monthly . erceptibly by differences inthe weight of passengers. riie apparatus can be secured to anywindow. An iron plate is securelybolted to the window-frame or fastenedto the stonework. When a fire breaksout the apparatus is swung out of thewinck)w on the iron plate. The entireweight isonlyaboul twenty- twopoiuids. To escaiie from aburning building, youfirst put on a leatherbelt and slip a safel\-ht)ok on the wire ropeof the apparatusinto a ring onthe belt. Thenyou mount thew i n d o w s i 11,swing out thecrane, and stepinto you reachthe ground, youslip off the coiled spring,which has beenplaced undertension as theresult of yourdrop, winds upthe rope auto-matically and is readyfor the next passengerin line. The speed of the drop is about timeand one-half feet a second. The sjiringwinds up the rope at the rate of se\entyfeet a second. Experts are inclined to regard thenew means of escape as the mostefficacious yet employed. Besides beingswifter than the old method it is con-. To escape from a burning build-ing, a belt is put on. a safety-hook is adjusted and a swiftdescent is made through space In the detail illustration the crane ofthe apparatus is shown and the brakecylinders which regulate the speed ofdescent. A coiled spring just abovethe belt rewinds the rope automatically sidered safer and the exit is apt to beless frenzied than down a stairway. 565 566 Popular Science Monthly The Electrical Scrub-Woman—Brainless but Efficient
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872
