USRE2206E - Improvement in utilizing waste vulcanized rubber - Google Patents
Improvement in utilizing waste vulcanized rubber Download PDFInfo
- Publication number
- USRE2206E USRE2206E US RE2206 E USRE2206 E US RE2206E
- Authority
- US
- United States
- Prior art keywords
- rubber
- vulcanized rubber
- improvement
- utilizing waste
- waste vulcanized
- Prior art date
Links
- 239000004636 vulcanized rubber Substances 0.000 title description 18
- 239000002699 waste material Substances 0.000 title description 10
- 229920001971 elastomer Polymers 0.000 description 22
- 150000001875 compounds Chemical class 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000003921 oil Substances 0.000 description 8
- 235000019198 oils Nutrition 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 4
- 235000015112 vegetable and seed oil Nutrition 0.000 description 4
- 239000008158 vegetable oil Substances 0.000 description 4
- 235000013162 Cocos nucifera Nutrition 0.000 description 2
- 240000007170 Cocos nucifera Species 0.000 description 2
- 240000002027 Ficus elastica Species 0.000 description 2
- 235000019482 Palm oil Nutrition 0.000 description 2
- 230000001721 combination Effects 0.000 description 2
- 239000002385 cottonseed oil Substances 0.000 description 2
- 235000012343 cottonseed oil Nutrition 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 229920000591 gum Polymers 0.000 description 2
- 230000000266 injurious Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010466 nut oil Substances 0.000 description 2
- 239000004006 olive oil Substances 0.000 description 2
- 235000008390 olive oil Nutrition 0.000 description 2
- 239000002540 palm oil Substances 0.000 description 2
- 229920001195 polyisoprene Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000341 volatile oil Substances 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
Definitions
- My present invention has for its object to avoid the expensiveand dangerous modes of treatment referred to and to restore to the rubber those properties of which it has been deprived by the process of vulcanization to which it had been previously subjected.
- This I accomplish by adding to the rubber, after it has been suitably connniuuted, a portion of some vegetable oil, which, having no solvent action on the rubber, simply restores to it those properties and that capability of being vulcanized which it possessed in' the crude state.
- Waste scraps or worn-out articles of vulcanized rubber -such as old boots, shoes, carsprings, &e.are .reduced by any suitable pro- This is best accomplished by the ordinary friction-rolls used in grinding crude rubber and mixing rubber compounds.
Description
' ecss to fine power or dust.
UNITED "STATES PATENT :OFFIc CHARLES MOBURNEY, CF ROXBURY, MASSACHUSETTS. I
IMPROVEMENT m UT'ILIIZING was-rs VULCANIZED RUBBER.
Specification forming part of Letters Patent No. 33,094, dated August- 20, 1561; Re'issue'No. 2.206, dated March 20, 1866. v
' India-Rubber; and Ihereby'declare the follow-- ing to be a full, clear, and exact description of the same, and of the characteristics which distinguish it from anything heretofore known.
The processes heretofore employed for the purpose of reusing waste vulcanized rubber are objectionable, in that expensive chemicals or the submission to steam of a high temperatnre or superheated steam are necessary to said processes, either of which, to a more or less. extent, injure the quality of the material, and in some cases decompose'it or burn it, so as to render it useless; besides, this mode of treatment with high or superheated steam is attended with danger, as the rubber is liable to ignite and be destroyed, at the same time endangering the safety of the buildings.
My present invention has for its object to avoid the expensiveand dangerous modes of treatment referred to and to restore to the rubber those properties of which it has been deprived by the process of vulcanization to which it had been previously subjected. This I accomplish by adding to the rubber, after it has been suitably connniuuted, a portion of some vegetable oil, which, having no solvent action on the rubber, simply restores to it those properties and that capability of being vulcanized which it possessed in' the crude state.
To enable those skilled in the art of manufacturing vulcanized-rubber goods to understand vmy invention,I will describe the process in detail.
Waste scraps or worn-out articles of vulcanized rubber -such as old boots, shoes, carsprings, &e.are .reduced by any suitable pro- This is best accomplished by the ordinary friction-rolls used in grinding crude rubber and mixing rubber compounds. This powdcrIpack into barrels, (old flour-barrels I find convenient,) sprinkling it very slightly with cold water to cause it to packin less bulk. I find, too, that the slight dampness softens the rubber andfits it for use after standing in some cool cellar or shed for a few weeks. To render it further suitable for use, I put twenty pounds of the powder (as above prepared) into a set of common friction grinding-rolls with from two to four pounds of crude rubber, grind them thoroughly till well combined, and then gradually mix in from three to five pounds of oilsuch as cotton-seed oil, olive-oil, caster-oil, palm-oil, or cocoa-nut oil. These amalgamate completely, forming a valuable compound, which can be used in the manufacture of many kinds of vulcanized-rubber goods. In order the more perfectly to prepare this compound for use I submit it to a low steam heat (not exceeding 230 Fahrenheit) I for from four to ten hours. Thus it is obvious to any one havingaknowledge of the. art of manufacturing vulcanized rubber that the compound produced has in no way been subjected to a decomposing or injurious process;
' but, on the contrary, that a new and valuable product is formed which may be extensively used in connection with other rubber compounds.
The proportions abovegiven may be varied; but they are what I find in practice to be good, and I think the best.
I ani aware that oils have been used in the manufacture of rubber, but this has been done" with an entirely different object and result.
I therefore lay no claim to such employment v of fixed vegetable oils; neither do I lay claim to any essential oils or other solvents for the purpose of restoring waste vulcanized rubber, for I 'do not use such oils or solvents.
WhatI claim as my invention, and desire to secure by Letters Patent, is- The use of the oils mentioned, .in combina tion with waste vulcanized rubber and crude gum or .rubber, as set forth, for the purpose specified. Y
In testimony whereof I have signed my name to this specification before'two subscribiug witnesses. v
CHARLES MCBURNEY. Witnesses:
'H. H. MCBURNEY, James W lson
Family
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