GB161611A - Improvements in and relating to the resharpening of files, rasps and the like - Google Patents

Improvements in and relating to the resharpening of files, rasps and the like

Info

Publication number
GB161611A
GB161611A GB2571119A GB2571119A GB161611A GB 161611 A GB161611 A GB 161611A GB 2571119 A GB2571119 A GB 2571119A GB 2571119 A GB2571119 A GB 2571119A GB 161611 A GB161611 A GB 161611A
Authority
GB
United Kingdom
Prior art keywords
files
rasps
length
brushed
sharpened
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
Application number
GB2571119A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB2571119A priority Critical patent/GB161611A/en
Publication of GB161611A publication Critical patent/GB161611A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F3/00—Electrolytic etching or polishing
    • C25F3/02—Etching
    • C25F3/06—Etching of iron or steel
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/06—Sharpening files

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Electrochemistry (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

161,611. Judd, S. T. Oct. 20, 1919. Files and rasps are re-sharpened by placing them in an electrolyte and applying a high-pressure current capable of giving a spark of length equal to the average length of the files, this length in inches being also equal to the number of minutes required for treatment. An induction coil may be used. A suitable electrolyte consists of 36 parts of water, 3 of nitric acid, and 5 of sulphuric acid. The water and files are placed in the vat and the acids added after current has been started. Before treatment, the files may be cleaned and wire-brushed. The sharpened files may be washed, wire-brushed, dipped in alkali, and dried. According to the Provisional Specification they may be dipped in a mixture of lacquer and methylated spirit.
GB2571119A 1919-10-20 1919-10-20 Improvements in and relating to the resharpening of files, rasps and the like Expired GB161611A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2571119A GB161611A (en) 1919-10-20 1919-10-20 Improvements in and relating to the resharpening of files, rasps and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2571119A GB161611A (en) 1919-10-20 1919-10-20 Improvements in and relating to the resharpening of files, rasps and the like

Publications (1)

Publication Number Publication Date
GB161611A true GB161611A (en) 1921-04-20

Family

ID=10232034

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2571119A Expired GB161611A (en) 1919-10-20 1919-10-20 Improvements in and relating to the resharpening of files, rasps and the like

Country Status (1)

Country Link
GB (1) GB161611A (en)

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