US693697A - Method of creosoting wood, &c. - Google Patents

Method of creosoting wood, &c. Download PDF

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Publication number
US693697A
US693697A US8709301A US1901087093A US693697A US 693697 A US693697 A US 693697A US 8709301 A US8709301 A US 8709301A US 1901087093 A US1901087093 A US 1901087093A US 693697 A US693697 A US 693697A
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Prior art keywords
creosote
wood
creosoting
water
vehicle
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Expired - Lifetime
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US8709301A
Inventor
Charles S Friedman
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EDGAR A BANCROFT
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EDGAR A BANCROFT
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Priority to US8709301A priority Critical patent/US693697A/en
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Publication of US693697A publication Critical patent/US693697A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/34—Organic impregnating agents
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S516/00—Colloid systems and wetting agents; subcombinations thereof; processes of
    • Y10S516/924—Significant dispersive or manipulative operation or step in making or stabilizing colloid system
    • Y10S516/927—Significant dispersive or manipulative operation or step in making or stabilizing colloid system in situ formation of a colloid system making or stabilizing agent which chemical reaction

Definitions

  • creosoting by usual practice the wood or other material under treatment needs to be thoroughly dried beforehand. Traces of water which are often detained within the compact cell structure serve to repel the oily creosote and so far defeat its preservative effect, whereas were saturation complete the inflammable character of the creosote markedly increases the risks from destruction by fire.
  • the creosote is provided with a suitable vehicle,
  • the zinc chlorid (ZnGl is next stirred in and dissolved, after which the bichromate of potash (K Or O previously prepared as a separate solution at 125 to 150 Fahrenheit (four ounces of water to one ounce of bichromate) is added to complete the creosote .vehicle.
  • This vehicle becomes insoluble and non-inflammable when its water dries out.
  • a second vessel, fitted with a mechanical agitator contains creosote of, e. g., 1.05 specific gravity,in requisite proportiomheated to about 125 Fahrenheit. The prepared vehicle is run into this vessel and there thoroughly admixed with the creosote present,
  • the zinc chlorid (ZnOl separately dissolved in water may be admixed with the creosote and only the bichromate o'f"
  • creosote of, e. g., 1.05 to 1.10 specific gravity, rich in tar acids and completely liquid at 100 Fahrenheit.
  • the creosote should contain at least twenty-five per cent. of constituents that do not distilover at 600 Fahrenheit. Thinner creosotes may be used; but they are less efiicacious than the heavier oils.
  • creosotin g wood or other ma.-. terials which consists in emulsifying creosote at proper temperature with a. viscid vehicle having a glue base and suitable chromium salt to react thereon, and after thorough admixture to complete the so-called emulsion, forcing the same into the interstices of the substance under treatment, substantially as described.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Description

UNITED STATES PATENT OFFICE.
CHARLES S. FRIEDMAN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO EDGAR A. BANCROFT, TRUSTEE, OF CHICAGO, ILLINOIS.
METHOD OF CR-EOSOTING WOOD, 80C.
SPECIFICATION forming part of Letters Patent No. 693,697, dated February 18,1902.
Application filed December 24, 1901.
Serial No. 87,093. (No specimens.)
To all whom it may concern:
Be it known that I, CHARLES S. FRIEDMAN, a citizen of the United States, and a resident of the city of Philadelphia, in the State of Pennsylvania, have invented certain new and useful Improvements in Methods of Oreosoting, of which the followingis a full, clear, and exact description.
In creosoting by usual practice the wood or other material under treatment needs to be thoroughly dried beforehand. Traces of water which are often detained within the compact cell structure serve to repel the oily creosote and so far defeat its preservative effect, whereas were saturation complete the inflammable character of the creosote markedly increases the risks from destruction by fire. According to the present invention the creosote is provided with a suitable vehicle,
such as will enable it to readily permeate the more remote interstices despite the presence of water, While the vehicle, owing to its solid non-combustible character when set, sufiices besides to counteract the evils due to the inflammability of the creosote.
In keeping with the method good results are obtained by use of a compound having ingredients and proportions as follows, viz: glue, one pound; water, two quarts; potash bichromate, (K Gr Q,) three ounces; zinc chlorid, (ZnGl four ounces creosote, two gallons. At the outset the glue is weighed ofi and soaked cold in the requisite amount of water for some three or four hours until the water is well absorbed, after which the temperature is raised to about 150 Fahrenheit, thus melting the glue to the consistency of a thin soup. The zinc chlorid (ZnGl is next stirred in and dissolved, after which the bichromate of potash (K Or O previously prepared as a separate solution at 125 to 150 Fahrenheit (four ounces of water to one ounce of bichromate) is added to complete the creosote .vehicle. This vehicle becomes insoluble and non-inflammable when its water dries out. A second vessel, fitted with a mechanical agitator, contains creosote of, e. g., 1.05 specific gravity,in requisite proportiomheated to about 125 Fahrenheit. The prepared vehicle is run into this vessel and there thoroughly admixed with the creosote present,
which latter becomes minutely difiused' through and through the mass after the man- Qncr of an emulsion, owing'to the viscidity of the vehicle. The finished compound passes thence into the ordinary creosoting-tank and at suitable temperature-e. 9., 150 to 175 Fahrenheitis forced into the wood or other material to be impregnated, as in familiar practice.
If preferred, the zinc chlorid (ZnOl separately dissolved in water may be admixed with the creosote and only the bichromate o'f" In practice preference is given to creosote of, e. g., 1.05 to 1.10 specific gravity, rich in tar acids and completely liquid at 100 Fahrenheit. The creosote should contain at least twenty-five per cent. of constituents that do not distilover at 600 Fahrenheit. Thinner creosotes may be used; but they are less efiicacious than the heavier oils.
Obviously the proportions and temperatures heretofore stated are given only in way of illustration'and may be varied at suggestion of those skilled in the art without essen= tial departure from the invention. In lieu of zinc chlorid (or zinc sulfate) the corresponding salts of copper can be taken; but they are more costly. The same objection applies were efiort made .to replace ordinary glue by other substitutes.
Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is
The method of creosotin g wood or other ma.-. terials which consists in emulsifying creosote at proper temperature with a. viscid vehicle having a glue base and suitable chromium salt to react thereon, and after thorough admixture to complete the so-called emulsion, forcing the same into the interstices of the substance under treatment, substantially as described.
CHARLES S-QFRIEDMAN.
Witnesses: Y i
SIMON J. FRIEDMAN, G. H. BERKHEISER.
US8709301A 1901-12-24 1901-12-24 Method of creosoting wood, &c. Expired - Lifetime US693697A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US8709301A US693697A (en) 1901-12-24 1901-12-24 Method of creosoting wood, &c.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8709301A US693697A (en) 1901-12-24 1901-12-24 Method of creosoting wood, &c.

Publications (1)

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