US161968A - Improvement in metal-punches - Google Patents
Improvement in metal-punches Download PDFInfo
- Publication number
- US161968A US161968A US161968DA US161968A US 161968 A US161968 A US 161968A US 161968D A US161968D A US 161968DA US 161968 A US161968 A US 161968A
- Authority
- US
- United States
- Prior art keywords
- punches
- metal
- improvement
- tool
- point
- 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
- 239000000126 substance Substances 0.000 description 6
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- CSDTZUBPSYWZDX-UHFFFAOYSA-N Amyl nitrite Chemical compound CCCCCON=O CSDTZUBPSYWZDX-UHFFFAOYSA-N 0.000 description 2
- 102100000672 SMPX Human genes 0.000 description 2
- 108060007673 SMPX Proteins 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
- B26F1/14—Punching tools; Punching dies
-
- 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
- Y10T83/00—Cutting
- Y10T83/929—Tool or tool with support
- Y10T83/9411—Cutting couple type
- Y10T83/9423—Punching tool
- Y10T83/9428—Shear-type male tool
- Y10T83/9435—Progressive cutting
Definitions
- the nature of this invention consists in forming or shaping the ends of punches in a winding or spiral manner, by which a continuous shearing cut is performed as the tool is forced or driven into the substance to be punched, in the same manner that the blades of shears perform the operation in a straight line, and this applies the same whether the tool be round, square, or oval.
- Figure 1 represents a face view of a punch so formed; Fig. 2, a side view of the same; and Fig. 3,another side view, showing the face of the chisel or perpendicular cut from A B to the center.
- Fig. 2 the cutting-edge is seen to descend from the point A, and wind in a spiral or uniform manner around the tool until it has performed its circuit to the point B, and perpendicular to the starting-point A, the spiral cut extendingto the center of the tool, or as nearly so as may be consistent with strength. From this it will be seen that only one side or portion of the cutting-edge of the tool is working at one time, and therefore the resistance of the metal or other substance is reduced to the lowest possible point.
- the herein described punch constructed with a cutting-edge extending from the point Ain aspiral direction to B, and from the salient point of the spiral to the longitudinal center, as and for the purpose set forth.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Adornments (AREA)
Description
STATES DE LANOY KENNEDY,
OF NEW YORK, N. Y.
IMPROVEMENT IN METAL-PUNCHES.
Specification forming part of Letters Patent No. 161,968, dated April 13, 1875; application filed October 22, 1874.
I as are used for punching metals and other substances, of which the following is a description, reference being had to the accompanying drawings, forming a part of this specification.
The nature of this invention consists in forming or shaping the ends of punches in a winding or spiral manner, by which a continuous shearing cut is performed as the tool is forced or driven into the substance to be punched, in the same manner that the blades of shears perform the operation in a straight line, and this applies the same whether the tool be round, square, or oval.
1n the annexed drawing, Figure 1 represents a face view of a punch so formed; Fig. 2, a side view of the same; and Fig. 3,another side view, showing the face of the chisel or perpendicular cut from A B to the center.
In Fig. 2 the cutting-edge is seen to descend from the point A, and wind in a spiral or uniform manner around the tool until it has performed its circuit to the point B, and perpendicular to the starting-point A, the spiral cut extendingto the center of the tool, or as nearly so as may be consistent with strength. From this it will be seen that only one side or portion of the cutting-edge of the tool is working at one time, and therefore the resistance of the metal or other substance is reduced to the lowest possible point.
I am aware that various methods have been resorted, to to divide the resistancesuch as cutting one part of the face of the tool a little lower than the other, or making it slightly concave or convex, or beveling it from one side or edge to the other, which devices, while they may, in a measure, reduce the resistance, do not accomplish the desired end by performing a uniform shearing cut around the entire circuit of the punch.
What I claim, and desire to secure by Let- -tcrs Patent, is-
The herein described punch, constructed with a cutting-edge extending from the point Ain aspiral direction to B, and from the salient point of the spiral to the longitudinal center, as and for the purpose set forth.
DE LANGY KENNEDY.
Witnesses:
OLE H. HOLBERG, D. S. RIDDLE.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US161968A true US161968A (en) | 1875-04-13 |
Family
ID=2231377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US161968D Expired - Lifetime US161968A (en) | Improvement in metal-punches |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US161968A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030159561A1 (en) * | 2002-02-28 | 2003-08-28 | Nordlin William F. | Knockout punch with pilot hole locator |
| US20040134325A1 (en) * | 2003-01-10 | 2004-07-15 | Nordlin William F. | Two piece punch with pilot hole locator |
| US8978431B1 (en) * | 2013-12-20 | 2015-03-17 | Ford Global Technologies, Llc | Punch and method for piercing holes with a retention structure |
-
0
- US US161968D patent/US161968A/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030159561A1 (en) * | 2002-02-28 | 2003-08-28 | Nordlin William F. | Knockout punch with pilot hole locator |
| US6973729B2 (en) | 2002-02-28 | 2005-12-13 | Greenlee Textron Inc. | Knockout punch with pilot hole locator |
| US20060016312A1 (en) * | 2002-02-28 | 2006-01-26 | Nordlin William F | Knockout punch with pilot hole locator |
| US7587830B2 (en) | 2002-02-28 | 2009-09-15 | Textron Innovations Inc. | Knockout punch with pilot hole locator |
| US20040134325A1 (en) * | 2003-01-10 | 2004-07-15 | Nordlin William F. | Two piece punch with pilot hole locator |
| US6981327B2 (en) | 2003-01-10 | 2006-01-03 | Greenlee Textron Inc. | Two piece punch with pilot hole locator |
| US8978431B1 (en) * | 2013-12-20 | 2015-03-17 | Ford Global Technologies, Llc | Punch and method for piercing holes with a retention structure |
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