US71919A - Improved method of hardening and bleaching articles made of soapstone, talc - Google Patents
Improved method of hardening and bleaching articles made of soapstone, talc Download PDFInfo
- Publication number
- US71919A US71919A US71919DA US71919A US 71919 A US71919 A US 71919A US 71919D A US71919D A US 71919DA US 71919 A US71919 A US 71919A
- Authority
- US
- United States
- Prior art keywords
- hardening
- soapstone
- improved method
- talc
- articles made
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004061 bleaching Methods 0.000 title description 6
- 239000000454 talc Substances 0.000 title description 4
- 229910052623 talc Inorganic materials 0.000 title description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 150000004760 silicates Chemical class 0.000 description 6
- 239000011780 sodium chloride Substances 0.000 description 6
- 235000002639 sodium chloride Nutrition 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000002845 discoloration Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000000395 magnesium oxide Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N AI2O3 Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 240000003936 Plumbago auriculata Species 0.000 description 2
- 240000003670 Sesamum indicum Species 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000004042 decolorization Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000005445 natural product Substances 0.000 description 2
- 229930014626 natural products Natural products 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/02—Thermal after-treatment
Definitions
- My process is as follows: I use a soft soapstone, free from grit. The other materials named can be used, when free from grit. After giving the desired form as, for example, that of knife-handles or pistol-handles to the substance employed, I put the articles so formed in intimate contact with some kind of carbon, (I prefer finely-ground hone-coal or plumbago,) into a closed vessel, of suitable material for resisting heat, and submit the vessel and contents to heat for an hour or more, removing the same when a white heat has been reached. The articles are then found to be hard and tough. V
Description
gotten tats: igetmt ffise,
HENRY JULIUS SMITH, OF BOSTON, MASSACHUSETTS, ASSIGNOB TO JOSEPH C. WIGHTMAN, OF NEWTO'NVILLE, NEW YORK.
Letters Patent No. 71,919, dated December. 10, 1867.
nrneeovnn Minion or HARDENING AND BLEAGHING ARTICLES MADE or SOAPSTONE, TALG, c0.
til 5rlgehn'le ttitltti! in in fi m-flatten fittest ant making mitt nf the same.
TO ALL WHOM IT MAY CONCERN:
Be it known that I, HENRY J. SMITH, of Boston, in the county of Suffolk, and Commonwealth of Masse chusetts, have invented a new and improved method of manufacturing useful and ornamental articles from the natural products known as soapstone, talc, silicates of magnesia, silicates of alumina, and silicates of magnesia.
and alumina-,namely, a. new and improved method of toughening and hardening such articles after they are shaped from the raw material, and of bleaching or decolorizingsuch articles, either beforeor after the hardening process. e
My process is as follows: I use a soft soapstone, free from grit. The other materials named can be used, when free from grit. After giving the desired form as, for example, that of knife-handles or pistol-handles to the substance employed, I put the articles so formed in intimate contact with some kind of carbon, (I prefer finely-ground hone-coal or plumbago,) into a closed vessel, of suitable material for resisting heat, and submit the vessel and contents to heat for an hour or more, removing the same when a white heat has been reached. The articles are then found to be hard and tough. V
For the purposeof decolorization or bleaching, I have used generally a'bath of melted common salt, in which the articles may have been placed previous to fusion of the salt, or immersed'after it is fused. The articles should remain in this bath a longer or shorter time in proportion to the size of the article and its degree of discoloration, but the heat' must not be carried to the point'of vaporization of the'salt. By this process thearticles will be bleached of their impurities.
Claim.
What I claim as new, and desire tosecure by LettersP-atent, is
1. The heating in a closed vessel, and in contact with carbon, the above-described substances, or articles formed therefrom, for the purpose of hardening and toughening the same, substantially as above described.
"2. Also, the removal, either before or after the hardening process, of impurities producing discoloration, by the action of a. bath of melted chloride of sodium, or other chemical compound operating in like manner.
HENRY JULIUS SMITH.
Witnesses:
FRANCIS V. Bench, Guns. J. HAYDEN.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US71919A true US71919A (en) | 1867-12-10 |
Family
ID=2141432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US71919D Expired - Lifetime US71919A (en) | Improved method of hardening and bleaching articles made of soapstone, talc |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US71919A (en) |
-
0
- US US71919D patent/US71919A/en not_active Expired - Lifetime
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