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Publication numberUS1012207 A
Publication typeGrant
Publication dateDec 19, 1911
Filing dateNov 1, 1910
Priority dateNov 1, 1910
Publication numberUS 1012207 A, US 1012207A, US-A-1012207, US1012207 A, US1012207A
InventorsAndreas Kolossvary
Original AssigneeSamuel Haltenberger, Ernst Berdenich
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Process of impregnating timber.
US 1012207 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)




Patented Dec. 19, 1911.



.rnocnss or mrnnenAciime ri'i riann.

Application filed Noveniner 1,1910. Serial No. 590,099.

To all whom it may concern Be it known that we, ANDREAS Konoss- VARY and SAMUEL HALTENBERGER, reslding at Budapest, Austria-Hungary, and Enns'r BERDENICH, residing at Piispiik-Ladny, i-

Austria-Hungary, subjects of the -King of Hungary, have invented a new and usefull,

that case only through the radial bundles of In the cells or the so-called medullary rays. interior of the wood, the distribution of the liquid takes place considerably more quickly through the axial bundles of vessels. In that way the quality and the cost of impregnation are dependent on the structure of the timber to be impregnated, and more particularly on the number, size and distribution of the medullary cells. It will be obvious that the impregnation of a compact kind of wood which has few medullafy cells, would require considerably greater expenditure of pressure, time and money, than that of a kind of wood with numerous inedullary cells.

This invention consists in increasing the number of the medullary rayswhich render possible the penetration of liquid, by means of small openings or pricks leading from the surface into the interior of the wood, artifically produced in any desired manner andr'acting as artificial medullary rays and facilitating the penetration ofthe liquid to a greater or less extent which can be determined beforehand by the number, size, depth and distribution of the said openings. These artificial medullary rays must be, however, produced in such manner that they should form only .so to say intermediate spaces between the cells, that is to say, the tool producing the pricks must as far as' possible only push aside the cells, without removing considerable quantities of the wood matea rial. Holes produced by removing material,

for-'iinstanceYby drilling, owing to the der'e dueeto a g'reat extent the strength of the struction of the fibers of. -,the place treated,"

ble without destruction of the fibers, only by pushing aside or shifting the fibers, do not afiect'the strength at all, as the fibers are not broken,-but only shifted.

It is ahead, known to make incisions or to bore holes in wood before, impregnation,

but all these openings were effected by severing or removlngthe wood fibers, while accordmg to the present invention the pricks ,are expressly made by pricking with sharp needles, so that here the fibers are only displaced, but neither severed nor removed. l he pricks are best produced by rotating steel needles approximately the size and shape of sewing machine needles, and for ordinary telegraph poles the pricks need only be about one inch deep. The pricks produced in-this manner close completely Specification of Letters Patent. Patented Dec. 19, 1911.

after the impregnation, since due to their elasticity, the merely displaced fibers return during the impregnation to their original posit-ion. Consequentl the wood is not weakened in the least by these pricks.

Artificial medullary rays facilitate and accelerate the penetration of the liquid, and on the other hand enable tougher impregnating solutions to be used, and impregna tion to be carried down to any desired depth.

As however, the degree of impregnation de-' pends on the number and size of the artificial'm'edullary rays, it is possible, according to this invention, to impregnate to a different extent the portions ofone and the same stem exposed in a different degree to rotting. As is well known, the exposed upperportion, and the bottom portion of electric poles embedded in the earth, rot very slowly,

while the portions adjoining the surface of the ground (both above and below the surface) owing to the changing moisture .and to the mushroom or fungi growth, rot exceedingly quickly; According to old processes, it was necessary to impregnate the whole of the pole strongly in order to ren-' der the above mentioned sensitive zone capable of resisting rotting for a long time. As, however, the said zone could not be im-' pregnated to a greater extent than the other "portions of the same pole, the upper and bottom portions which are less sensitive, were impregnated to a wasteful and unnecessary degree. According to this invention,

the moresensitive portions of the longitudinal timber to impregnated, are provided with a larger number of, or with deeper, ar-' tificial medullary rays, while the other portions are treated only to a smaller extent or not at all, so that'during the impregnation the liquid will penetrate into the more sen sitive portions to a' eater depth and in a larger quantity, while the other portions will take up only as much liquid as required needles.

for their slight-protection. By suitable distribution of artificial medullary rays, it is therefore possible to impregnate'the dangerous zone to a greater depth, and neverthelessto effect a considerable saving, as the portions which are exposed to less danger are impregnated only in accordance. with the actual requirements, independently of the depth of impregnation of the dangerous portion.

The holes constituting artificial medullary =ra s can be produced either by means of sultable hand tools orb Zmachines.

The accompanying rawing shows in a diagrammatical view the preferred form of a machine for piercing the pricks, which machine however does not form part of the present invention. The pole rests on the rolls F F The motor M drives continually the arbor C, which rotates the needles S, mounted in the slide E. The arm H is connected with a coupling, by which either gear A or geanB can be brou ht in mesh with the gear X of arbor C. If A meshes with .X,

The additional ex enditure of labor is amply compensated ythe fact that (a) the impregnation is completed much more quickly, so that the installation is utilized to a better advantage; (6) the hitherto unattained high impregnation of the dangerous portion increases to an extraordinary degree the durability. and consequently the value of the whole article; (0') inspite of the deep impregnation of the dangerous portions, a considerable saving, up to .of

impregnating liquid is effected, as thezones exposed to a smaller danger are impreghated only to a depth corresponding to the actual requirements.

What we claim as our invention and de thelike, such proces? consisting in piercing .small radial pricks in .the wood by sharp rotating needles without severing (the fibers and without removal of material and impregnating this pricked timber with a preserving fluid, by pressure.- 3. An economical process for im regnating timber, such as poles for aerial lines and the like, such process consisting in piercingsmall radial pricks in the wood by merely displacing the fibers thereof without severing them and without removal of material, a larger number of pricks being provided where the wood is more exposed to decomposition, and impregnating this pricked timber with a preserving fluid, by pressure.

4. An economical process for, im regnaiing timber, such as poles for aerial hues and the like, such process consisting in piercing small radial. pricks in the wood by merely displacing the fibers'thereof, said pricks being made only where the wood is more exposed 'to decomposition, and impregnating this timber with a preserving fluid, by pressure. V

5. An economical process for impregnating timber, such as poles for aerial lines and the like, such process consisting in piercing small radial pricks in the wood by merely displacing the fibers thereof, a larger num- '-ber of and deeper pricks being made where the wood is more exposed to decomposition and impregnating this timber with a preserving fluid by pressure.

In testimony whereof, we have signed our names to this specification in the presence of two subscribing witnesses. 1



" Witnesses CHARLES Mnssnnenn,


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2799597 *Feb 2, 1953Jul 16, 1957Iowa State College Res FoundatMethod of impregnating wood with wood-preserving oil
US4206793 *Mar 30, 1978Jun 10, 1980Eisenwerk Weserhutte AgProcess for improving the impregnability of wood
US4596717 *Jul 6, 1984Jun 24, 1986Dornier System GmbhPreparing a piece of wood for impregnation
US5368419 *Jan 12, 1993Nov 29, 1994Imus; Robert E.Apparatus for implanting latent insecticide
DE2714010A1 *Mar 30, 1977Oct 12, 1978Weserhuette Ag EisenwerkEinrichtung zur mechanischen vorbehandlung von bauholz fuer die anwendung von traenkverfahren
U.S. Classification427/291
Cooperative ClassificationB27K3/105