CA1172435A - Manual keyway punching tool - Google Patents
Manual keyway punching toolInfo
- Publication number
- CA1172435A CA1172435A CA000356842A CA356842A CA1172435A CA 1172435 A CA1172435 A CA 1172435A CA 000356842 A CA000356842 A CA 000356842A CA 356842 A CA356842 A CA 356842A CA 1172435 A CA1172435 A CA 1172435A
- Authority
- CA
- Canada
- Prior art keywords
- handles
- punch
- die
- bore
- extensions
- 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
Links
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
- B23D27/00—Machines or devices for cutting by a nibbling action
- B23D27/02—Hand-held devices
-
- 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
- B23D29/00—Hand-held metal-shearing or metal-cutting devices
- B23D29/02—Hand-operated metal-shearing devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
ABSTRACT
This invention relates to a manually operated cutting tool for cutting notches or slits in metal, plastic and the like. The tool has a pair of handles with a pivot pin connecting the handles together and a pair of links pivotally connected to one another at one end with the free ends thereof being connected to the handles. A punch has at least one character at one end and has the connected ends of the links pivotally connected to the other end. A die is fixedly secured to the handles and includes a bore receiving the punch means, the bore having at least one recess with the cutter disposed therein. The die has a surface which engages material to be cut and maintains the same thereon as the cutter moves downwardly into the die in response to the inward movement of the handles so that the material is cut.
There is thus provided a slidable punch and die arrangement wherein cutting is achieved by longitudinal movement of the punch within the bore of the die as opposed to known devices wherein cooperating jaws come together.
This invention relates to a manually operated cutting tool for cutting notches or slits in metal, plastic and the like. The tool has a pair of handles with a pivot pin connecting the handles together and a pair of links pivotally connected to one another at one end with the free ends thereof being connected to the handles. A punch has at least one character at one end and has the connected ends of the links pivotally connected to the other end. A die is fixedly secured to the handles and includes a bore receiving the punch means, the bore having at least one recess with the cutter disposed therein. The die has a surface which engages material to be cut and maintains the same thereon as the cutter moves downwardly into the die in response to the inward movement of the handles so that the material is cut.
There is thus provided a slidable punch and die arrangement wherein cutting is achieved by longitudinal movement of the punch within the bore of the die as opposed to known devices wherein cooperating jaws come together.
Description
The present inventlon relates to a manually operated tool, ancl more particularly to a tool for cut-ting notches or slits in metal, plas-tic and ~he like.
A slitting tool such as described in U.S. Paten-t 3,263,545 shows a movable die that cuts a slot in metal, plastic, or the like. The patent shows that the force to move the die to cut the slit is on a direct or one-to-one ratio. Moreover, the tool shown in U.S. Patent 4,111,022 shows a manual crimping tool utilizing two levers to move the jaws. However, applicant's inven-tion is directed to a keyway punching tool.
According to the present invention there is provided a tool including a pair of elongated handles, pivot means connecting the handles together, linkage means including a pair of links with means pivotally conn0cting the links to one another of their ends thereof with the free ends being connected to one of the handles, respectively, and punch means having a plurality of cutting means adjacent one end comprised of extensions disposed along the longitudinal axis thereof, each of the extensions having a recessed portion intermediate its length, with a cutting edge formed on the extension adjacent the recessed portion, the extensions being of different thickness. Means is provided at the other end of the punch means connecting the punch means to the link pivot means, and die means is fixedly secured to the handles having a bore receiving the punch means and connecting the same to the handle pivot means. Stop means is disposed between the punch means and sb/
'~3 ~ 7~ ,5 the die means Eor controlling the exten-t of movement of the punch means when the handles are moved toward and away from each other. The bore has longitudinal recesses aligned with the cutter extensions for receiving the same, and a longitudinal recesses are of a width corresponding to the thickness of the e~tension disposed therein. The die means includes a surface which engages material to be cut and maintains the same thereon as the cutting means moves downwardly into the die means in response to the inward movement of the handles whereby the material will be cut.
BRIEF DESCRIP~ OF THE DRAWINGS
Fig. 1 is a side view of the tool;
Fig. 2 is a top view of the tool;
Fig. 3 is a fragmentary side view of the top of the tool;
Fig. 4 is a cross-sectional side view o~ the tool;
- la -. ... .
~"; sb/
:~ ~ '7~'~35 Fig. 5 is a view of the die;
Fig. 6 is a top view of -the die shown in Fig. 6;
Fig. 7 is a side view of punch tool;
Fig. 8 is a front view of the punch tool shown in Fig. 7;
Fig. 9 is the top view of the punch tool shown in Fig. 8; and Fig. lQ is a cross-sectional view of the punch and die showing the relative location of the recesses and the respective use thereof.
DETAILED DESCRIPTI:ON:
.. ... .. . .
Fig. 1 shows a manually operated tool 10 comprising a pair of handles 11 adapted to be pivokally moved to position 12, shown in dotted line fashion, by means of a pivot pin 13.
~b A plurality of linkages 14 is connected pivo-tally at one end of the linkages 14 to the punch tool 16 by means oE a pivot pin 17. It is therefore apparent that pivotal movement of the handles outwardly at piVQt pin 13 and pivotal movement of linkages 14 causes upward movement of the punch tool 16 by vir~ue of a recess 18, that provides for slidable movement of tha punch 16 within the limits provided by the length of the recess 18. In other words, the slot 18 moves back and forth upon the pin 13 ~hen the tool is in operation, the pin serving as an abutment to limit the movement of the punch 16.
A die 2Q is located around the punch tool 16 and connected to the tool by means of pivot pin 13. That is, a longitudinal bore 19 in the die is alignea with the recess 18 of the punch 16 and connected to the handles 11 by means of a ~ 2 --~.!, . pC/~ `
,' pivot pin 13~ Movement of the handles 11 causes upward movement of the punch 16 whereas the die 20 remains stationary.
The punch tool 16 comprises a bore 21 at one end to be pivotally connected to the linkages 14 by means of pivot pin 17. The upper end of punch 16 comprises two cutters ~3 and 25 along the longitudinal axis thereof, that are diametrically opposite extentions of each other. That is, they are 180 apart. IIowever, it is within the purview of one skilled in the arts to adapt the cutter extension~ at different angular positions other than diametrically opposite each other. Each of the cutter extensions 23 and 25 are provided with a recess 24 and 26, respectively.
The die 2a comprises a bore 22 having longitudinal recesses 19 and 27 that are aligned with the protruding cutter, extensions 23 and 25 of the punch 16.
It is apparent from Fig. 6 that the recesses 2~ and 27 are a different size, but correspond to the size of cutter extensions 23 and 25. As shown in Fig. 10, a cross-sectional view of the material to be notched is brought up against the punch tool, and aligned in the recess 16. Movement of the handles 11 inwardly or toward each other causes downward movement of the punch 16 ~o the position shown in Fig. 4. ~Movement of the die 16 downwardly against the material wherein the shouldex portion 31 of the cutter extension or protrusion 25 causes the workpiece material to be notched.
In operation, the operator moves the handles 11 outwardly to move the cutters 23 and 25 above the die 20 and the tool is moved into position wherein the recess of either cutter 23 or 25 abuts the material to be removed. Thence, the pc/~ .
. ~ ~
. ' .
, ~ l~ 7~5 operator closes or moves the handles toward each other causing the shoulder portion 29 or 31 of the cutter, either 23 or 25 respectively, to remove the metal between the top portion of die 20 and the shoulder por-tions 29 or 31 of either oE the cutter extensions 23 or 25 respectively.
It is not intended that the invention be limited to the embodiments shown in the drawings, kut rather that the invention also comprises all such designs and modifications as may come within the scope of the appended claims.
~ pc/,~ .
A slitting tool such as described in U.S. Paten-t 3,263,545 shows a movable die that cuts a slot in metal, plastic, or the like. The patent shows that the force to move the die to cut the slit is on a direct or one-to-one ratio. Moreover, the tool shown in U.S. Patent 4,111,022 shows a manual crimping tool utilizing two levers to move the jaws. However, applicant's inven-tion is directed to a keyway punching tool.
According to the present invention there is provided a tool including a pair of elongated handles, pivot means connecting the handles together, linkage means including a pair of links with means pivotally conn0cting the links to one another of their ends thereof with the free ends being connected to one of the handles, respectively, and punch means having a plurality of cutting means adjacent one end comprised of extensions disposed along the longitudinal axis thereof, each of the extensions having a recessed portion intermediate its length, with a cutting edge formed on the extension adjacent the recessed portion, the extensions being of different thickness. Means is provided at the other end of the punch means connecting the punch means to the link pivot means, and die means is fixedly secured to the handles having a bore receiving the punch means and connecting the same to the handle pivot means. Stop means is disposed between the punch means and sb/
'~3 ~ 7~ ,5 the die means Eor controlling the exten-t of movement of the punch means when the handles are moved toward and away from each other. The bore has longitudinal recesses aligned with the cutter extensions for receiving the same, and a longitudinal recesses are of a width corresponding to the thickness of the e~tension disposed therein. The die means includes a surface which engages material to be cut and maintains the same thereon as the cutting means moves downwardly into the die means in response to the inward movement of the handles whereby the material will be cut.
BRIEF DESCRIP~ OF THE DRAWINGS
Fig. 1 is a side view of the tool;
Fig. 2 is a top view of the tool;
Fig. 3 is a fragmentary side view of the top of the tool;
Fig. 4 is a cross-sectional side view o~ the tool;
- la -. ... .
~"; sb/
:~ ~ '7~'~35 Fig. 5 is a view of the die;
Fig. 6 is a top view of -the die shown in Fig. 6;
Fig. 7 is a side view of punch tool;
Fig. 8 is a front view of the punch tool shown in Fig. 7;
Fig. 9 is the top view of the punch tool shown in Fig. 8; and Fig. lQ is a cross-sectional view of the punch and die showing the relative location of the recesses and the respective use thereof.
DETAILED DESCRIPTI:ON:
.. ... .. . .
Fig. 1 shows a manually operated tool 10 comprising a pair of handles 11 adapted to be pivokally moved to position 12, shown in dotted line fashion, by means of a pivot pin 13.
~b A plurality of linkages 14 is connected pivo-tally at one end of the linkages 14 to the punch tool 16 by means oE a pivot pin 17. It is therefore apparent that pivotal movement of the handles outwardly at piVQt pin 13 and pivotal movement of linkages 14 causes upward movement of the punch tool 16 by vir~ue of a recess 18, that provides for slidable movement of tha punch 16 within the limits provided by the length of the recess 18. In other words, the slot 18 moves back and forth upon the pin 13 ~hen the tool is in operation, the pin serving as an abutment to limit the movement of the punch 16.
A die 2Q is located around the punch tool 16 and connected to the tool by means of pivot pin 13. That is, a longitudinal bore 19 in the die is alignea with the recess 18 of the punch 16 and connected to the handles 11 by means of a ~ 2 --~.!, . pC/~ `
,' pivot pin 13~ Movement of the handles 11 causes upward movement of the punch 16 whereas the die 20 remains stationary.
The punch tool 16 comprises a bore 21 at one end to be pivotally connected to the linkages 14 by means of pivot pin 17. The upper end of punch 16 comprises two cutters ~3 and 25 along the longitudinal axis thereof, that are diametrically opposite extentions of each other. That is, they are 180 apart. IIowever, it is within the purview of one skilled in the arts to adapt the cutter extension~ at different angular positions other than diametrically opposite each other. Each of the cutter extensions 23 and 25 are provided with a recess 24 and 26, respectively.
The die 2a comprises a bore 22 having longitudinal recesses 19 and 27 that are aligned with the protruding cutter, extensions 23 and 25 of the punch 16.
It is apparent from Fig. 6 that the recesses 2~ and 27 are a different size, but correspond to the size of cutter extensions 23 and 25. As shown in Fig. 10, a cross-sectional view of the material to be notched is brought up against the punch tool, and aligned in the recess 16. Movement of the handles 11 inwardly or toward each other causes downward movement of the punch 16 ~o the position shown in Fig. 4. ~Movement of the die 16 downwardly against the material wherein the shouldex portion 31 of the cutter extension or protrusion 25 causes the workpiece material to be notched.
In operation, the operator moves the handles 11 outwardly to move the cutters 23 and 25 above the die 20 and the tool is moved into position wherein the recess of either cutter 23 or 25 abuts the material to be removed. Thence, the pc/~ .
. ~ ~
. ' .
, ~ l~ 7~5 operator closes or moves the handles toward each other causing the shoulder portion 29 or 31 of the cutter, either 23 or 25 respectively, to remove the metal between the top portion of die 20 and the shoulder por-tions 29 or 31 of either oE the cutter extensions 23 or 25 respectively.
It is not intended that the invention be limited to the embodiments shown in the drawings, kut rather that the invention also comprises all such designs and modifications as may come within the scope of the appended claims.
~ pc/,~ .
Claims (2)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A tool comprising a pair of elongated handles, pivot means connecting said handles together, linkage means including a pair of links, means pivotally connecting the links to one another of their ends thereof with the free ends being connected to one of said handles, respectively, punch means having a plurality of cutting means adjacent one end and comprised of extensions disposed along the longitudinal axis thereof, each of said extensions having a recessed portion intermediate its length, with a cutting edge formed on the extension adjacent the recessed portion, said extensions being of different thickness, and means at the other of the punch means connecting the punch means to the link pivot means, die means fixedly secured to said handles having a bore receiving said punch means and connecting the same to said handle pivot means, stop means disposed between said punch means and said die means for controlling the extent of movement of said punch means when said handles are moved toward and away from each other, said bore having longitudinal recesses aligned with said cutter extensions for receiving the same, said longitudinal recesses being of a width corresponding to the thickness of the extension disposed therein, and said die means including a surface which engages material to be cut and maintains the same thereon as the cutting means moves downwardly into said die means in response to the inward movement of said handles whereby material will be cut.
2. A keyway cutting tool comprising a pair of elongated handles, pivot means connecting said handles together, linkage means including a pair of links, means pivotally connecting the links together at one end of their ends with the other of their ends being pivotally connected to a respective one of said handles, punch means having a pair of keyway cutter extensions extending longitudinally therealong adjacent one end and means adjacent the other end connecting the punch means to said link pivot means so that said punch means can be moved by bringing the handles toward or away from one another, said cutter extensions each having a recessed portion intermediate its longitudinal length with a cutting edge formed thereon adjacent said recess and being of different size to cut different size keyways, die means connected to said handle pivot means in stationary relation relative to said punch means, said die means having a bore for slidably receiving said punch means with said keyway cutter extensions extending out of said bore at the end of said die means remote from said handle pivot means when said handles are open and said die means having a surface on said remote end thereof for engaging and maintaining a workpiece thereon during cutting, said bore having a pair of different size recesses extending longitudinally therealong for receiving said longitudinally extending keyway cutter extensions when said handles are closed to move said punch means into said die means and cut the workpiece, and stop means disposed between said punch means and die means for controlling the extent of movement of said punch means relative to said die means when said handles are opened and closed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US5986879A | 1979-07-23 | 1979-07-23 | |
| US059,868 | 1979-07-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1172435A true CA1172435A (en) | 1984-08-14 |
Family
ID=22025810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000356842A Expired CA1172435A (en) | 1979-07-23 | 1980-07-23 | Manual keyway punching tool |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS5633220A (en) |
| CA (1) | CA1172435A (en) |
| FR (1) | FR2461557B1 (en) |
| GB (1) | GB2054443B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3475886D1 (en) * | 1983-07-01 | 1989-02-09 | Uniroyal Goodrich Tire Co | Tire uniformity grinder |
| CH685685A5 (en) * | 1992-08-11 | 1995-09-15 | Hinno Ag | Ausbrechzange. |
| JP5962583B2 (en) * | 2013-05-21 | 2016-08-03 | トヨタ自動車株式会社 | Nibra |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1475273A (en) * | 1921-01-03 | 1923-11-27 | William Schollhorn Co | Hand tool |
| US2329387A (en) * | 1943-07-16 | 1943-09-14 | Brenning Reuben | Sheet-material shearing tool |
| DE1221881B (en) * | 1963-01-15 | 1966-07-28 | Trumpf & Co | Slitting scissors for cutting plates made of metal, plastic or the like. |
| DE2165799A1 (en) * | 1971-12-31 | 1973-07-12 | Held | BOLT CUTTERS |
| JPS5225757U (en) * | 1975-08-13 | 1977-02-23 | ||
| US4111022A (en) * | 1977-05-02 | 1978-09-05 | Minnesota Mining And Manufacturing Company | Manual crimping tool |
-
1980
- 1980-07-17 GB GB8023442A patent/GB2054443B/en not_active Expired
- 1980-07-21 FR FR8016059A patent/FR2461557B1/en not_active Expired
- 1980-07-21 JP JP9885780A patent/JPS5633220A/en active Pending
- 1980-07-23 CA CA000356842A patent/CA1172435A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2461557A1 (en) | 1981-02-06 |
| FR2461557B1 (en) | 1987-06-26 |
| JPS5633220A (en) | 1981-04-03 |
| GB2054443A (en) | 1981-02-18 |
| GB2054443B (en) | 1983-04-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |