present mode of purifyinggas is expensive, by this improved process an actualprofit arises. The expenses for altering gasworks tosuit this new purifyiag method are very small onworks where dry-lime purifiers are used, as thesecan be altered with a trifling outlay. This purifyingprocess is the… … ISSUED PROM THE UNITED STATES PATENT OFFICE FOR THB WEEK ENDING MARCH 3, 1863.Reported Officially for the Scientific American. *#* Pamphlets containing the Patent Laws and full par-ticulars of the mode of applying for Letters Patent, speci-fying size of model required, and much other…
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