US43775A - Improvement in construction of round and half-round files - Google Patents
Improvement in construction of round and half-round files Download PDFInfo
- Publication number
- US43775A US43775A US43775DA US43775A US 43775 A US43775 A US 43775A US 43775D A US43775D A US 43775DA US 43775 A US43775 A US 43775A
- Authority
- US
- United States
- Prior art keywords
- round
- improvement
- construction
- files
- tile
- 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
- 238000010276 construction Methods 0.000 title description 6
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 229910001369 Brass Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
Images
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
- the ordinary round and half-round les are constructed by rst rolling or swaging the steel in the desired form, technically termed blanks and these blanks are then cut in order to form the tile.
- the fiat tiles may be constructed in this way in a perfect manner,
- Brass and copper tiles which are sometimes used for particular kinds of work, do not require to have the iat plates heated in order to be bent. They are bent while in a cold state.
- Fig. l shows a haltl round tile, A, in a tinished state, Fig. 2, a transverse section of the same;
- Fig. 3 an end view of a Hat plate, a, cut and ready to be bentin the form shown in Figs. l and 2.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finishing Walls (AREA)
Description
NITED STATES ATENT OFFICE.
IMPROVEMENT IN CONSTRUCTION 0F ROUND AND HALF-ROUND FILES.
Specitieation forming part of Letters Patent No. 43,775, dated August 9, 1864.
.To all 1071/0711/ it may concern,.-
Be it known that l, J. NELsoN JACOBS, of NVorcester, in the count-y ot' Worcester and State of Massachusetts, have invented a new and useful Improvement in the Construction of Round and Half-Round Files; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, making a part of this specih'cation, in which- Figure l represents a side view of a halfround tile constructed according-to my invention; Fig. 2, atransverse section ot' the same taken in the line 06,*Fig. l; Fig. 3, an end View of a iat steel plate, which is rst cut and then bent in round or half-round form.
The ordinary round and half-round les are constructed by rst rolling or swaging the steel in the desired form, technically termed blanks and these blanks are then cut in order to form the tile. The fiat tiles may be constructed in this way in a perfect manner,
but round and half-round [iles cannot be perfectly cut, as the cutting-tool destroys the rotundity ot the surface, which, instead of being` round or half-round, is of polygonal form.
By my improvement I can construct a round or halt' round tile with a perfect curved surface either circular or semicircular in its transverse section. To ett'ect this I construct blanks out or" sheet-steel plates of any desired dimensions, according t-o the size of the tile required, and out said blanks, either manually or by a machine, in the same way as the ordinary tlat or tri-lateral tiles are cut. These plates are then heated and bent, or bent without heating, so as to form a circle or semicircle in their transverse section, and are then tempered. The tiles thus constructed may remain in shell form, or, in cases Where weight and solidity are required, they may be filled with wood or soft metal; a tangto receivea handle being attached to one end of them. By this arrangement I obtain a tile of the kind specified, with aperfect curved surface,
and consequently one which willoperate much more perfectly than those constructed in the ordinary Way. Besides, I eiiect a saving in metal, as well as in. the cost of manufacture. Brass and copper tiles, which are sometimes used for particular kinds of work, do not require to have the iat plates heated in order to be bent. They are bent while in a cold state.
Fig. l shows a haltl round tile, A, in a tinished state, Fig. 2, a transverse section of the same; Fig. 3, an end view of a Hat plate, a, cut and ready to be bentin the form shown in Figs. l and 2.
I claim as new and desire to secure by Letters Patent- The process herein described ot' constructing` round and half-round tiles-t0 wit, by forming the blanks of flat metal plates, cutting the same, and then bending them in the round or half-round form.
J. NELSON JACOBS.
Witnesses J AMES H. BANoRoFr, W. C. WILLiAMs.
Publications (1)
Publication Number | Publication Date |
---|---|
US43775A true US43775A (en) | 1864-08-09 |
Family
ID=2113341
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US43775D Expired - Lifetime US43775A (en) | Improvement in construction of round and half-round files |
Country Status (1)
Country | Link |
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US (1) | US43775A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2445753A (en) * | 1944-03-25 | 1948-07-27 | Ernest A Anheuser | File |
US3629918A (en) * | 1969-09-22 | 1971-12-28 | Wallace Murray Corp | File |
US20040037518A1 (en) * | 2001-06-01 | 2004-02-26 | Adc Telecommunications, Inc. | Method and apparatus for multi-directional fiber optic connection |
US20100178929A1 (en) * | 2002-10-16 | 2010-07-15 | Andrew Corporation | Network Overlay Geo-Location System with Smart Antennas and Method of Operation |
-
0
- US US43775D patent/US43775A/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2445753A (en) * | 1944-03-25 | 1948-07-27 | Ernest A Anheuser | File |
US3629918A (en) * | 1969-09-22 | 1971-12-28 | Wallace Murray Corp | File |
US20040037518A1 (en) * | 2001-06-01 | 2004-02-26 | Adc Telecommunications, Inc. | Method and apparatus for multi-directional fiber optic connection |
US20100178929A1 (en) * | 2002-10-16 | 2010-07-15 | Andrew Corporation | Network Overlay Geo-Location System with Smart Antennas and Method of Operation |
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