US1314449A - Samuel whytb - Google Patents
Samuel whytb Download PDFInfo
- Publication number
- US1314449A US1314449A US1314449DA US1314449A US 1314449 A US1314449 A US 1314449A US 1314449D A US1314449D A US 1314449DA US 1314449 A US1314449 A US 1314449A
- Authority
- US
- United States
- Prior art keywords
- files
- samuel
- whytb
- etching
- bath
- 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
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 16
- 238000005530 etching Methods 0.000 description 14
- 235000011167 hydrochloric acid Nutrition 0.000 description 10
- 238000005406 washing Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000004140 cleaning Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 6
- 238000007654 immersion Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 235000015450 Tilia cordata Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D73/00—Making files or rasps
Definitions
- This invention relates to the renewing of the cutting edges of files or other appliances having similar multiple cutting edges, by etching.
- the present invention consists in employing. to renovate files and the like, combinations of nitric and hydrochloric acids giving industrially controllable etching.
- I employ suitable frames into which the files are inserted and held for dipping into the vats, and arrange for the mechanical low ering of the files into the respective vats. I also prefer to provide for circulation of the etching and washing fluids.
- the final washing is preferably efi'ected in an alkaline water, say lime water.
- a process of renovating files and the like consisting in etching the cleaned Worn files by immersion in a warm bath of substantially equal parts of nitric acid, hydrochloric acid and water, at a temperature of about 100 F.
- a process of renovating files and the like consisting in etching the cleaned Worn files by immersion in a bath composed essentially of substantially equal parts of hydrochloric acid, nitric acid and Water, maintained at about 100 F., and thereafter washing, such washing operation including washing with an alkaline solution.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- ing And Chemical Polishing (AREA)
Description
UNITED STATES PATENT OFFICE.
SAMUEL WHYTE, OF REDHILL, ENGLAIVD.
PROCESS OF RESHARPENING FILES.
No Drawing.
To all whom it may concern Be it known that I, SAMUEL WI-IYTE,
B. So, a subject of the King of Great Britain and Ireland, and residing at Shir1ey, Earlswood- Road, Bedhill, in the county of Surrey, England, have invented certain new and useful Improvements Relating to Processes of Resharpening Files, of which the following is a specification.
This invention relates to the renewing of the cutting edges of files or other appliances having similar multiple cutting edges, by etching.
I have found that etching is produced upon file steels by hot dilute sulfuric acid, but that the action rapidly becomes not uniform. The action on the bottoms of the grooves between the teeth soon ceases, and they become clogged, possibly with iron carbids set free. Again, dilute hydrochloric acid only acts very slowly, much too slowly for industrial working. Dilute nitric acid, on the other hand, acts very rapidly, and tends to pit the surfaces. Its action alone is very difficult to control. It has, however, the valuable property of very rapidly cleaning the surfaces, and removing all clogging metal and other matter.
Now the present invention consists in employing. to renovate files and the like, combinations of nitric and hydrochloric acids giving industrially controllable etching.
In carrying this invention into effect, the ordinary worn files are, after cleaning, immersed in a warm bath of mixed nitric and hydrochloric acids, in substantially equal Specification of Letters Patent. Patented Aug, 26, 1919,
Application filed April 16, 1919.
Serial No. 290,575.
parts of these acids, and of water. The rate of etching depends on the temperature of the bath, and this is maintained practically constant. -At about 80 F., the files will be found to take about eight minutes to complete, while if the bath be raised to about 100 F., they will be completed in about four minutes. They are then removed from the bath, washed, and preferably wiped with oil, when they are ready 'for packing.
I employ suitable frames into which the files are inserted and held for dipping into the vats, and arrange for the mechanical low ering of the files into the respective vats. I also prefer to provide for circulation of the etching and washing fluids.
The final washing is preferably efi'ected in an alkaline water, say lime water.
I claim:
1. A process of renovating files and the like consisting in etching the cleaned Worn files by immersion in a warm bath of substantially equal parts of nitric acid, hydrochloric acid and water, at a temperature of about 100 F.
2. A process of renovating files and the like consisting in etching the cleaned Worn files by immersion in a bath composed essentially of substantially equal parts of hydrochloric acid, nitric acid and Water, maintained at about 100 F., and thereafter washing, such washing operation including washing with an alkaline solution.
In testimony whereof I have signed my name to this specification.
SAMUEL WHYTE.
Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1314449A true US1314449A (en) | 1919-08-26 |
Family
ID=3381941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US1314449D Expired - Lifetime US1314449A (en) | Samuel whytb |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1314449A (en) |
-
0
- US US1314449D patent/US1314449A/en not_active Expired - Lifetime
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