US831450A - Wood impregnation. - Google Patents

Wood impregnation. Download PDF

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Publication number
US831450A
US831450A US28412205A US1905284122A US831450A US 831450 A US831450 A US 831450A US 28412205 A US28412205 A US 28412205A US 1905284122 A US1905284122 A US 1905284122A US 831450 A US831450 A US 831450A
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United States
Prior art keywords
oil
wood
ties
wood impregnation
retort
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Expired - Lifetime
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US28412205A
Inventor
Cuthbert B Lowry
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Individual
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Priority to US28412205A priority Critical patent/US831450A/en
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Publication of US831450A publication Critical patent/US831450A/en
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Expired - Lifetime legal-status Critical Current

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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
    • B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
    • B27K5/001—Heating

Definitions

  • the object of this invention is to enable timber, especially railroad-ties, to be thor- V oughly impregnated with creosote-oil or other creosoting compounds and at the same time greatly reduce the cost of such treatment.
  • seasoned or partlyseasoned or dried timber generally may be treated in a similar manner.
  • the ties are run into a retort or c linder, preferably on cars, and thereupon the doors of the retort are closed, so as. to make the latter perfectly air-tight.
  • the retort is then filled with oil of the kind with which the ties are to be treated,

Landscapes

  • 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.
CUTHBERT B. LOWRY, OF LEXINGTON, KENTUCKY.
WOOD l-MPREGNATlON- Specification of Letters Patent.
Patented Sept. 18, 1906.
Application filed October 23, 1905. Serial No. 284,122.
make and use the same.
The object of this invention is to enable timber, especially railroad-ties, to be thor- V oughly impregnated with creosote-oil or other creosoting compounds and at the same time greatly reduce the cost of such treatment.
The invention will be hereinafter fully set forth, and particularly pointed out in the claim.
In describing my process I shall especially refer to the treatment of railroad-ties; but it will be understood that seasoned or partlyseasoned or dried timber generally may be treated in a similar manner. The ties are run into a retort or c linder, preferably on cars, and thereupon the doors of the retort are closed, so as. to make the latter perfectly air-tight. The retort is then filled with oil of the kind with which the ties are to be treated,
. and pressure is applied by forcing more oil into the retort by the aid of pumps. This is continued until the ties are thoroughly and completely saturated, the oil entering the pores and cells and thoroughl impregnatin the wood. This requires about four an one-half allons of oil for each tie if the latter be of. 0a or other hard wood and about seven gallons if of pine. The quantity of oil required for each board or piece of timber may be readily determined with a little practice; but that stated is found to produce the best results in the treatment of timber having the proportions of the ordina railroad-ties. After the stated quantity 0 oil has been forced into the retort the pumps are stopped and all free oil is quickly withdrawn through suitable valves. The latter are then closed,
and a quick and highwacuum is produced,
representing from .about twenty-five to twenty-seven inches ofmercury. This vacuum is maintained for from one and one-half to two hours, by which time most of the oil in the cells and pores of thetimber is withdrawn. The quantity of oii then remaining in each tie after this step is completed is about two and one-half gallons, all of which is thoroughly absorbed and taken up by the fibers. This saving is made possible by the uick production of the vacuum, thereby ena ling the oil to be withdrawn from the cells or pores of the wood before the air can escape through the oil forced thereinto.
. By means of my invention I am enabled to effect a complete saturation of the fiber with the use of a comparatively small quantity of oil, thus greatly reducing the cost of wood impregnation.
claim as my invention' The herein-described process of preserving wood, consisting in saturating the wood with creosoteoil under pressure while entirely submerged, then removing all free oil, and
then immediately subjecting the wood to the action of a vacuum to withdraw most of the oil from the pores and cells thereof.
In testimony whereof I have signed this specification in the presence of two subscrib ing witnesses.
CUTH BERT B. LOWRY.
Witnesses JAMES CRAVEN, J. G. EDWARDS.
US28412205A 1905-10-23 1905-10-23 Wood impregnation. Expired - Lifetime US831450A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US28412205A US831450A (en) 1905-10-23 1905-10-23 Wood impregnation.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28412205A US831450A (en) 1905-10-23 1905-10-23 Wood impregnation.

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US831450A true US831450A (en) 1906-09-18

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US28412205A Expired - Lifetime US831450A (en) 1905-10-23 1905-10-23 Wood impregnation.

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2868673A (en) * 1958-03-07 1959-01-13 American Zinc Lead & Smelting Treatment of materials
US4305978A (en) * 1979-03-05 1981-12-15 Haeger Bror O Process for treatment of wood
EP2026939A1 (en) * 2006-05-22 2009-02-25 Höljäkkä Oy Method for pressure impregnating wood or wood products with wood preservative containing vegetable oil and impregnated wood

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2868673A (en) * 1958-03-07 1959-01-13 American Zinc Lead & Smelting Treatment of materials
US4305978A (en) * 1979-03-05 1981-12-15 Haeger Bror O Process for treatment of wood
EP2026939A1 (en) * 2006-05-22 2009-02-25 Höljäkkä Oy Method for pressure impregnating wood or wood products with wood preservative containing vegetable oil and impregnated wood
EP2026939A4 (en) * 2006-05-22 2011-01-12 Hoeljaekkae Oy Method for pressure impregnating wood or wood products with wood preservative containing vegetable oil and impregnated wood

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