USRE4942E - Improvement in rubber packings - Google Patents
Improvement in rubber packings Download PDFInfo
- Publication number
- USRE4942E USRE4942E US RE4942 E USRE4942 E US RE4942E
- Authority
- US
- United States
- Prior art keywords
- rubber
- improvement
- rubber packings
- weight
- parts
- Prior art date
Links
- 229920001971 elastomer Polymers 0.000 title description 16
- 241000209456 Plumbago Species 0.000 description 6
- 239000005864 Sulphur Substances 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 239000010439 graphite Substances 0.000 description 6
- 239000004615 ingredient Substances 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 6
- 229910001369 Brass Inorganic materials 0.000 description 4
- 239000010951 brass Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 4
- 241000501754 Astronotus ocellatus Species 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate dianion Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 240000002027 Ficus elastica Species 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 230000001070 adhesive Effects 0.000 description 2
- 231100000078 corrosive Toxicity 0.000 description 2
- 231100001010 corrosive Toxicity 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001195 polyisoprene Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
Definitions
- the proportions of the ingredients may be varied to suit the nature of the valves to be made, but for ordinary purposes I have found the following proportions to answer well, viz.: rubber, ten parts by weight; plumbago, twenty parts by weight carbonate of lead, or litharge, six parts by-weight; sulphur, four parts by weight; brass filings, six parts by weight.
Description
UNITED STATES o. L. FRINK, OF ROOKVILLE, OONNEOTIOUT, nssrelvon, BY MESNE ASSIGN- PATENT OFFICE.
MENTSflJJO OSCAR T. EARLE.
IMPROVEMENT IN RUBBER PACKINGS.
Specification forming part of Letters Patent No. 54,523, dated May 8, 1866; reissue No. 4,942, dated June 11,
and which will be perfectly free from all adhesive properties. It consists of a combination of plumbago or other similar substance, used in the manufacture of rubber to give consisten cy, with rubber, sulphur, and metallic filingsinsuch proportions that, after the mass is heated to a suitable vulcanizing temperature, it will form a refractory rubber compound capable of withstanding the action of'acids and other corrosive fluids, and steam, and the vapor of other fluids at high temperatures. v
In carrying out my invention I make a compound of India rubber, sulphur, plumbago or black lead, or other equivalent material usually mixed with rubber to give consistency, and add metal filings, (brass being used by preference.) The metal filings which I use in my composition I usually obtain from the pin-factories, but they may be prepared expressly for the purpose, according to the nature of the packing to be made.
The proportions of the ingredients may be varied to suit the nature of the valves to be made, but for ordinary purposes I have found the following proportions to answer well, viz.: rubber, ten parts by weight; plumbago, twenty parts by weight carbonate of lead, or litharge, six parts by-weight; sulphur, four parts by weight; brass filings, six parts by weight.
These ingredients are well mixed and incorporated in any convenient manner, and rolled into sheets or pressed into molds of proper shape. The mass is then "ulcanized at a temperature ran ging'from the ordinary vulcanizin g temperatures up to 300 Fahrenheit. Usually, for ordinary purposes, such as steam-pack 1 ing, I use the high temperature'of 300 Fahrenheit, or thereabout.
What I claim is A rubber compound made of the ingredients herein'specified, for the purposes set forth.
CHRISTOPHER L. FRINK. Witnesses:
CHAS. L. OooMBs, W. HUAFF.
Family
ID=
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