Hand Book of Timber Preservation |
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Common terms and phrases
absorbed absorption acid amount antiseptic applied Burnett carbolic acid cent Chanute charge chemicals Chicago chloride of zinc chloride solution coal tar coil condensed condition cost creosote oil CU.FT cubic feet cubic foot cylinder dead oil decay degree dissolved experience extract Fahr fiber forced back gelatine give glue heat hydrometer impregnation injected Las Vegas less load matter means method moisture Octave Chanute one-half operation paving blocks penetration piles pine pipe plant practice pressure pure chloride quantity railroad railway record RED OAK removed retort Rowe Rueping seasoned secured solu solution tub specific gravity square inch steam storage strength surface condenser Table tank tannic acid tannin tannin solution temperature Timber Preserving TIMBER TREATING tion Total track tram cars treatment tree untreated vacuum pump valve vapor Vegas weight Wellhouse process zinc chloride zinc solution ZINC-CREOSOTE zinc-tannin process
Popular passages
Page 309 - For a time every wood preserver steamed before injection and it is only within the last two or three years that the question has been raised whether better penetration with mineral salts cannot be obtained by omitting steaming altogether.
Page 104 - Navy, made known to the public his new process for treating wood. The invention consists of destroyng the tendencies of certain vegetable and animal substances to decay by submitting them to the action of chloride of zinc. The degree of dilution recommended by Mr. Burnett is one part volume by fifty parts of water. At first the method of impregnation was by immersion in open tanks.
Page 111 - THE NORFOLK CREOSOTING COMPANY'S METHOD OF PRESERVING WOOD FROM MOLLUSKS AND THE ELEMENTS. The preservation of timber by the Dead Oil of Coal Tar process, as carried on by all well-equipped creosoting plants, consists of two distinct operations — the preparation of the wood, and its impregnation with the preservative. The preparation of the wood necessary for the proper reception of the preserving substances is the removal of all those portions of the tissue which are subject to fermentative action.
Page 113 - This operation is continued until the requisite amount of oil has been put into the timber. The chamber is then opened and the timber withdrawn. The apparatus is then ready for further use. The successful conduct of the operation above outlined exacts the most careful attention and skillful management, supplemented by adequate and suitable appliances. The wide divergence in the characteristics of timber; the varying amounts of sap, due to the lapse of time since, and the season in which the tree...
Page 111 - Upon the successful accomplishment of this entirely depends the value of artificially preserved wood for structural purposes. If this step of the operation is conducted at too low a temperature, or for too short a time, the sap or liquid part nearest the surface will only be extracted, the consequence of which will be an insufficient space for receiving the preservative. If, on the other hand, the operation is carried on at too high a temperature, or for too long a time, the resinous portion of the...
Page 298 - ... contents of the wood. This can not be accomplished with the pure solution of chloride of zinc, and it may also be expected that such a mixture will enter with the protein substances of the wood into more insoluble, or either more...
Page 111 - ... or bundles of cellulose tissue, forming the solid or fully matured part. Upon the successful accomplishment of this entirely depends the value of artificially preserved wood for structural purposes. If this step of the operation is conducted at too low a temperature, or for too short a time, the sap or liquid part nearest the surface will only be extracted, the consequence of which will be an insuff1cient space for receiving the preservative.
Page 115 - ... not more than 5 per cent of tar, and not more than 5 per cent of carbolic acid. " It must not flash below 185° F. nor burn below 200° F., and it must be fluid at 118° F. It must begin to distill at 320° F., and must yield, between that temperature and 410° F., of all substances less than 20 per cent by volume. "Between 410° and 470° F. the yield of naphthalene must be not less than 40 nor more than 60 per cent by volume. At two degrees above its liquefying-point it must have a specific...
Page 114 - All oil shall be the heavy or dead oil of coal tar, containing not more than ij4 per cent of water, and not more than 5 per cent of tar, and not more than 5 per cent of carbolic acid. It must not flash below 185° F. nor burn below 200° F. and it must be fluid at 118° F. It must begin to distill at 320° F. and must yield between that temperature and 410° F. of all substances...
Page 114 - Of equal importance is a proper understanding о a of the circumstances under which the finished product is to be used. Timber for piers, wharves and other structures in tropical waters demand processes and degrees of thoroughness of treatment that are unnecessary in the harbors of more temperate climates, which are, in turn, more exacting than land and fresh-water construction. " It is as true as it is unfortunate, that, in the past — perhaps at present — much creosoted work has fallen far below...