rever. In order to prevent present more than six hundred wells in operation in often used. such accidents (which occur almost daily), Mr. C. H. the Baku region, where, in 1873, there were but a few Mr. Urquhardt, engineer of the Gratzi-Tsaristsin Jacot, of the firm of Jacot, Juillerat & Co., 37… … Fig. 2. PETROLEUM INJECTOR. herewith illustrated, by which these accidents will be the folds of the calcareous sti-ata, some wells be- impossible, for as soon as the cylinder revolves too fast ing found that are perfectly dry right along- a pawl will engage in the ratchet wheel and hold it side of…
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