has been patented by Mr. Maskell F. superseded batteries as sources of electricity, all that is Rising from the'platf orm or base of the derrick are the Carll, of 134 Oxford St., Providence, R. I. required is a tank, a quantity.of distilled water, and two main uprights, which are connected by cross… … BROWN'S BEFBI6EBAT0B STOBEHOUSE FOB FBUITS, ETC. BLUNDELL'S IMPROVED DERRICK. low the diaphragm. The safety valve is arranged to blow off at the pressure required for vulcanization in roller formed with cogs, by which it may be revolved, carried by the doors, which, by this means, can be held the…
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