US94503A - Improvement in rasps - Google Patents
Improvement in rasps Download PDFInfo
- Publication number
- US94503A US94503A US94503DA US94503A US 94503 A US94503 A US 94503A US 94503D A US94503D A US 94503DA US 94503 A US94503 A US 94503A
- Authority
- US
- United States
- Prior art keywords
- teeth
- tooth
- improvement
- rasps
- rasp
- 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
- 210000000515 Tooth Anatomy 0.000 description 48
- 241000220010 Rhode Species 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 235000017274 Diospyros sandwicensis Nutrition 0.000 description 2
- 241000282838 Lama Species 0.000 description 2
- 102100000672 SMPX Human genes 0.000 description 2
- 108060007673 SMPX Proteins 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 239000000463 material 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
- B23D71/00—Filing or rasping tools; Securing arrangements therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/18—File or rasp
Definitions
- Figure 1 is face view of the ordinary rasp-teeth.
- Figure 2 is a face view of the rasp, with my irnlproved'teeth.' v
- Figures 3 and 4 are face and sectional views of the teeth, enlarged.
- the purpose of my invention is to so form the teeth of a rasp that each ofthe several teeth shall be able to eiiect a shearingout upon the metal or material to which the ras'p is applied, and I accomplish this by making the cutting-edge of each individual tooth curved, or practically so, in two directions in relationto the surface ofthe file, the portion of the metal raised by the chisel being convex on its'outer and inclined surface, and presenting a cutting-edge either convex or concavev in relation to a Straight line sup.
- the cross-section of the punch, which is required to form the teeth is a mixtilinear triangle, the curved side of which forms the tooths cutting-edge.
- the several teeth a, figs. 2 and 3 require a punch whose edgeforming face isy convex, while to form the tooth b, Iig. 4, the corresponding face of the punch should be concave.
- the tooth raised by such punches will be capable of making a shearing-cut. It is-not necessary, however, that the outline of the cross-seetion of the cutting-face of the teethshould bea curved line; it may be 'composed of several straight lines, constituting the elements of a curved line.
- Teeth formed as described can obviously beairanged to stand in any of the usual or preferred lines, across the face of the rasp, with the saine facility as if made in the common form.
- My invention is independent of any means to obtaina result obtained from any peculiarityof arrangcment of the several rows of teeth, but resides in the peculiar character which each tooth individually possesses, and which enables it, without gard to its arrangement with respect to any other tooth in the rasp,
- rasps which consists in making the cutting-edges of the several teeth thereof in the form and of the character substantially as herein described, for the purpose of enabling ⁇ each of such teeth to exert a shearing-cut, when applied to use as set forth.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Food-Manufacturing Devices (AREA)
Description
@disipa-d isirt @sind f dtiijirr,
WILLIAM rr. NICHOLSON, OE PROVIDENCE, RHODE ISLAND, ASSIGNOE To 'iHE NIOH- OLSON FILE COMPANY, or SAME PLACE.
Leners Peten: Ne. 94,503, elated september 7, '1869.
IMPROVEMENT IN RASPS.
The Schedule'efverred to in these Letters Patent and making part of the lama To all whom tt may concern.-
Be it known that I, WILLIAM T. NICHOLSON, of
lthe vcity and county of Providence, in the State of Rhode Island, have invented a' new and useful Improvement'in Files; and I do hereby declare that the following specification, taken in connection with the drawings, making a part of the same, is a full, clear, and exact description thereof.
Figure 1 is face view of the ordinary rasp-teeth.
Figure 2 is a face view of the rasp, with my irnlproved'teeth.' v
Figures 3 and 4 are face and sectional views of the teeth, enlarged.
v The purpose of my invention is to so form the teeth of a rasp that each ofthe several teeth shall be able to eiiect a shearingout upon the metal or material to which the ras'p is applied, and I accomplish this by making the cutting-edge of each individual tooth curved, or practically so, in two directions in relationto the surface ofthe file, the portion of the metal raised by the chisel being convex on its'outer and inclined surface, and presenting a cutting-edge either convex or concavev in relation to a Straight line sup.
posed to be drawn immediately in front of the tooth, and at right angles to its axis of elevation.
' The formation of the teeth, as shown in fig. 1 and fig. 2, respectively, will illustrate the difference be'- tweeu the common tooth and that which is my improvement.
In the former figure, representing the common teeth of rasps, the cutting-edge of each tooth is raised by a' ,punch,wl1ose cross-section is a plain triangle,` and,
consequently, the cnttingfedge of the tooth will be in a straight line.
In iig. 2, the cross-section of the punch, which is required to form the teeth is a mixtilinear triangle, the curved side of which forms the tooths cutting-edge. In the instance shown in the drawing, the several teeth a, figs. 2 and 3, require a punch whose edgeforming face isy convex, while to form the tooth b, Iig. 4, the corresponding face of the punch should be concave. In 'both cases the tooth raised by such punches will be capable of making a shearing-cut. It is-not necessary, however, that the outline of the cross-seetion of the cutting-face of the teethshould bea curved line; it may be 'composed of several straight lines, constituting the elements of a curved line.
Teeth formed as described can obviously beairanged to stand in any of the usual or preferred lines, across the face of the rasp, with the saine facility as if made in the common form.
. I am aware that a rasp has, before my invention, been made, with the arrangement of the cuttingedges of some ofthe teeth inclined to the longitudinal axis of' the rasp, while the remainder ofthe teeth are arranged in the common way, the eifect ot' which arrangement is to accomplish a partial shearing-eut.
My invention is independent of any means to obtaina result obtained from any peculiarityof arrangcment of the several rows of teeth, but resides in the peculiar character which each tooth individually possesses, and which enables it, without gard to its arrangement with respect to any other tooth in the rasp,
to produce a shearing-cut.
What I claim as my invention, and desi-re to secure by Letters Patent, is
The improvement in, rasps, which consists in making the cutting-edges of the several teeth thereof in the form and of the character substantially as herein described, for the purpose of enabling `each of such teeth to exert a shearing-cut, when applied to use as set forth.
W. T. NICHOLSON. Witnesses:
BENJ. F. THURSTON, PETER F. HUGHES.
Publications (1)
Publication Number | Publication Date |
---|---|
US94503A true US94503A (en) | 1869-09-07 |
Family
ID=2163980
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US94503D Expired - Lifetime US94503A (en) | Improvement in rasps |
Country Status (1)
Country | Link |
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US (1) | US94503A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2663071A (en) * | 1951-01-13 | 1953-12-22 | George F Ritter | Abrasive tool |
US3045321A (en) * | 1955-04-15 | 1962-07-24 | Buckbee Mears Co | Abrading devices and method of making them |
US4598447A (en) * | 1984-09-20 | 1986-07-08 | File Sharpening Company | Farrier's file/rasp |
US5027519A (en) * | 1989-10-16 | 1991-07-02 | Vincentis Scott A De | Cue tip dressing device and method |
US5919007A (en) * | 1998-01-28 | 1999-07-06 | Cooper Industries, Inc. | Combined file and rasp for laminate materials |
US6792738B2 (en) * | 2001-06-21 | 2004-09-21 | Douglas W. Robinson | Pack wrapper opening system |
US20140060857A1 (en) * | 2012-09-06 | 2014-03-06 | Juan G. Ortega | Combination Rasping/Filing Tool |
-
0
- US US94503D patent/US94503A/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2663071A (en) * | 1951-01-13 | 1953-12-22 | George F Ritter | Abrasive tool |
US3045321A (en) * | 1955-04-15 | 1962-07-24 | Buckbee Mears Co | Abrading devices and method of making them |
US4598447A (en) * | 1984-09-20 | 1986-07-08 | File Sharpening Company | Farrier's file/rasp |
US5027519A (en) * | 1989-10-16 | 1991-07-02 | Vincentis Scott A De | Cue tip dressing device and method |
US5919007A (en) * | 1998-01-28 | 1999-07-06 | Cooper Industries, Inc. | Combined file and rasp for laminate materials |
US6792738B2 (en) * | 2001-06-21 | 2004-09-21 | Douglas W. Robinson | Pack wrapper opening system |
US20140060857A1 (en) * | 2012-09-06 | 2014-03-06 | Juan G. Ortega | Combination Rasping/Filing Tool |
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