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Scientific American, Vol. 65, No. 24 (1891) (1891)

leaf 3

An illustration from Scientific American, Vol. 65, No. 24 (1891), 1891, leaf 3
ich are then floated on a basin of water maintained charge of fuel is delivered into the fire pot. at about 80°C. As soon as the pure turpentine has level to top of skylight. The structure consists of 0 evaporated, both watch glasses are weighed. The AN ELEVATOR DOOR OPERATING DEVICE. twelve pairs… … connection with the ear, whereby the link will draw the accumulation of ashes, is shown in the accompany- BUTLER’S ELEVATOR DOOR OPERATOR. upon the wrist pin toturn the disk and its shaft when ing illustration. It has. been patented by Mr. William the tympanis being thrown back, but will slide…

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