Fumigation investigations in California . and carrying the carboy. (Original.) A DEVICE FOR COVERING FUMIGATION GENERATORS. During the course of this investigation much effort has beendirected toward perfecting a device for attachment to the top of thecommonly used open-style fumigation generator that will serve tointerrupt the direct rise of the hydrocyanic-acid gas. The result ofthese efforts, in which the writer was greatly aided by Mr. FrederickMaskew, is shown in figure 21. The device itself consists of a coppercover of such size as to make it available for use with any of theregular-patt
Fumigation investigations in California . and carrying the carboy. (Original.) A DEVICE FOR COVERING FUMIGATION GENERATORS. During the course of this investigation much effort has beendirected toward perfecting a device for attachment to the top of thecommonly used open-style fumigation generator that will serve tointerrupt the direct rise of the hydrocyanic-acid gas. The result ofthese efforts, in which the writer was greatly aided by Mr. FrederickMaskew, is shown in figure 21. The device itself consists of a coppercover of such size as to make it available for use with any of theregular-pattern generators now employed by the lumigators ofsouthern California. It is stamped in a concave form from a sheetof copper, with corrugations to permit the escape of gas. The shapeis such as to conform to the size of the opening of generators of dif-ferent capacities and also to direct the course of the escaping gasdownward and distribute it uniformly through the lower part of the A COVER FOB n M l«. \ l l»».\ ,,\ ERA CORS. i) <. tent. It is attache*! to the generator by iiinges of stout copper wireBecured by a key bolt passing through the handle. The cover israised by a slight pressure of the thumb od a projecting piece whichie curved in such a manner that the cover will remain in an uprightposition when so required. When the generator is emptied of itscontents, tho cover swings clear by its own weight. A glance at the illustration will satisfy the practical Ininigator that it is adapted to all the requirements of rapid work in the dark, while its use has demonstrated that it is simple, strong, and durable. It is \<t\possible that if the copper cover were lined with a thin covering o[ Lead its durabilitywould be increased. A common result ofthe use of heavy do-sages o( line fragmentsof cyanid is the burn-ing and ultimate drop-ping of many of theLeaves directly above1the generator in thepathway of the rapidlyrising gas. This resultis usually spoken of asthe chimney
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectfumigation, bookyear1
