Preserved Wood and Process of Making Same Page: 4 of 5
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1,045,110
oil is produced, which possesses two im-
portant features, namely, fluidity at high
temperatures with consequent ease of im-
pregnation, and a 'desirable degree of .vis-
5 cosity' at low temperatures, which secures
waterproof or water resistant qualities in a
high degree. There is the further advan-
tage of treatment with these sulfurized
oils, that they may be caused to oxidize and
10 dry in the superficial layers of the fibrous
structure, so that the oil in the interior of
the structure is fairly sealed within the
wood. This is important, especially in
making paving blocks which may be
15 charged with oil in such :a manner that the
heat of the sun does not cause the' liquid
to exude from the interior of the block, a
defect which has heretofore been observed
in many of the compositions of the creosote
20 and resin type.
The present invention contemplates also
the fiber' coating of railroad ties, paving
blocks and the like, adjusting the amount
of the oil to this end and proportioning the
25 amount of high powered antiseptic material
with respect to the mechanical life of the
railroad tie or other fibrous structure
whereby the preservative life or action and
mechanical life substantially coincide.
30 The treatment of'petroleum oils and creo-
sote with sulfur, with or without the intro-
duction of oil soluble copper or arsenic salts
or other high powered preservative, makes
possible the manufacture from low grade
35 petroleum oils, and oil which has the proper-
ties, to a very large extent, of the Bakers-
field oil. As stated the supply of the latter
is not very great, but it is in considerable
demand, in connection with the preserva-
40 tion of wood largely because of its good
waterproofing qualities, and the present in-.
vention in part is concerned with the con-
version of low grade petroleum oils by sul-
fur -treatment and the like, thereby prodnic-
45 ing an oil. which has an even better water-
proofing character than Bakersfield asphal-
tic oil.
This application is in part ,a continuation
of Serial No. 474,565 as regards the use of
50 creosote admixed with asphaltic or other
suitable pore-plugging oil.
What I claim is:
1. The herein described process of. pre-
serving railroad ties, paving blocks and
55 other fibrous material consisting in inject-
ing thereinto at least a fiber coating amount
of asphalt oil carrying creosote material;
the said creosote material being present in
predetermined amount whereby the preserv-
60 ative action substantially coincides with the
life of the' tie and the like, and in causing
at least a major portion of the interior fibers
of said tie or other fibrous material to be
coated with said oil.2. The herein described process of pre- 65
serving railroad ties, paving blocks and.
other fibrous material consisting in injecting
thereinto at least a fiber ciating amount of
a mineral oil carrying creosote material: the
said creosote material being present in pre- 70
determined amount whereby the preserva->
tive action substantially coincides with the
mechanical life of the fibrous material and
in causing at least a major portion of the in-
terior fibers of said tie or other fibrous ma- 75
aerial to be coated with said oil.
3. The herein described process of pre-
serving railroad ties, paving blocks and
other fibrous material consisting of injecting
thereinto at least a fiber coating amount of 80
oily material comprising low-boiling creo-
sote and a waterproofing agent, the propor-
tion of the creosote being adjusted with ref-
-erence to the mechanical life of the wood
structure and the proportion of waterproof- 85
ing agent being adjusted with reference to
the porosity of the wood.
4. The process of treating wood compris-
ing subjecting same to a sulfureted compos-
ite of creosote and 'asphalt oil under pres- 90
sure.
5. The process of treating fibrous material
which comprises impregnating wood with
oils containing thin-bodied .antiseptic oil
and a heavy-bodied mineral oil of a water- 95
proofing character, the proportion of the
creosote antiseptic being adjusted with ref-
erence. to the mechanical life of the fibrous
material and the proportion of waterproof-
ing agent being adjusted with reference to '100
the porosity of the wood. '
6. As a new article, of manufacture wood
impregnated with oils comprising thin creo-
sote oil and a heavy-bodied asphalt oil of a
waterproofing character; the proportion of 105
the creosote antiseptic being adjusted to the
mechanical life of the wood structure and
the proportion of waterproofing agent being
adjusted with reference to the porodity) of
the wood. 110
7. As a new article of manufacture, wood
impregnated with a mixture of thin creosote
and asphaltic oil, proportioned with respect
to the mechanical life of the wood structure.
8. As a new article of manufacture pre- 115
served wood impregnated 'with a mixture of
creosote, Blaugas spent oil and an asphalt
oil.
9. As a new article of manufacture pre-
served wood impregnated with a mixture of 120
creosote, Blaugas spent oil and asphaltic oil
carrying sulfur bodies in solution therein.
10. As a new article of manufacture wood
impregnated with sulfureted asphalt oil and
sulfureted creosote oil. '125
11. As a new article of manufacture wood.
containing very volatile creosote or carbolic
bodies sealed in with asphaltic oil.
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Ellis, Carleton. Preserved Wood and Process of Making Same, patent, November 19, 1912; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth513545/m1/4/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.