CA1050253A - Compression tools - Google Patents
Compression toolsInfo
- Publication number
- CA1050253A CA1050253A CA266,407A CA266407A CA1050253A CA 1050253 A CA1050253 A CA 1050253A CA 266407 A CA266407 A CA 266407A CA 1050253 A CA1050253 A CA 1050253A
- Authority
- CA
- Canada
- Prior art keywords
- lever jaw
- cutter blade
- pair
- jaw plates
- lever
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
- H01R43/042—Hand tools for crimping
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Knives (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
- Portable Power Tools In General (AREA)
- Scissors And Nippers (AREA)
- Shearing Machines (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Abstract
A B S T R A C T
A cutter attachment for a compression tool includes a first cutter blade mounted on a pivot pin extending between a first pair of lever jaw plates and a second cutter blade fixed relative to a second pair of lever jaw plates. Movement of the first and second pairs of lever jaw plates towards and away from each other is controlled by an individual handle attached to each pair.
When the handles of the tool are squeezed, opposed cutting edges of the blades move together to sever a cable when positioned between the cutting edges.
A cutter attachment for a compression tool includes a first cutter blade mounted on a pivot pin extending between a first pair of lever jaw plates and a second cutter blade fixed relative to a second pair of lever jaw plates. Movement of the first and second pairs of lever jaw plates towards and away from each other is controlled by an individual handle attached to each pair.
When the handles of the tool are squeezed, opposed cutting edges of the blades move together to sever a cable when positioned between the cutting edges.
Description
The present invention relates to compression tools and in parti-cular tools for crimping electrical connectors to the ends of cables.
It is known, from United Kingdom patent No. 1057515, (AMP Ref.
7106~, for a crimping tool to include two handle assemblies pivotally connected together and each pivotally connected to an individual lever jaw plate for controlling the movement of the lever ja~ plates towards and away from each other, the lever jaw plates being held in spaced opposed relationship by a tie plate to which they are both pivotally connected. The handles forming part of the handle assemblies are made very long for heavy duty applications in order to provide sufficient mechanical advantage at the lever jaw plates for crimping heavy duty connectors to the ends of heavy duty cables. For example, such a ; tool is used for crimping connectors to the ends of cables having a diameter of 16 millimetres.
! It has been found necessary, on occasions, not only to terminate heavy duty cable but also to sever such cable and the present invention is concerned with a tool similar to that disclosed in U.K. patent 1057515 but also having cutter blades for permitting the severance of heavy duty cable.
According to the present invention, a compression tool comprises two handle assemblies pivotally connected together and each pivotally connect-ed to an individual lever jaw plate for controlling the movement of the lever jaw plates towards and away from each other, the lever jaw plates being held in spaced, opposed relationship by a tie plate to which they are both pivotal-ly connected, and first and second cutter blades, the first cutter blade being pivotally connected to one lever jaw plate and having a cutting edge which extends beyond the second lever jaw plate, the second cutter blade being fixed relative to the second lever jaw plate for movement therewith and having a cutting edge facing the cutting edge of the first cutter blade so that on squeezing together the handle assemblies, the cutting edges move relatively . ~
.~,, ... , --- - - ,. , . . ., - ,. . , -. - . . .... . . ...... . . . . ........... . . .
:: . . . , , ; . -~050;253 towards each other to sever a workpiece when operatively positioned between the cutting edges.
In a preferred embodiment, two pairs of spaced lever jaw plates are provided, each pair being pivotally connected to one end of an individual link forming part of a handle assembly, the link being connected at an oppos-ite end to its respective handle, the first cutter blade being pivotally mounted on a pin extending between a first pair of lever jaw plates and pass-ing between the second pair of lever jaw plates, the second cutter blade being fixed between the second pair of lever jaw plates by a lug on the cutter blade which engages in a corresponding hole in one jaw plate of the second pair and having an arcuate recess in the second cutter blade which engages over a pin extending between the second pair of lever jaw plates, the first cutter blade being a slide fit between the second cutter blade and a lever jaw plate of the second pair.
An embodiment of the invention will now be described, by way of example, reference being made to the Figures of the accompanying diagra~matic drawings in which:-Figure 1 is a front elevation of a compression tool in its closed position;
Figure 2 is a front elevation of the tool of Figure 1 showing parts of the tool in an open position;
Figure 3 is a cross-section on the line 3-3 of Figure 1; and Figure 4 is a cross-section on the line line 4-4 of Figure l;
The tool of the present invention is similar in many respects to the tool disclosed in U.K. patent 1057515, but for convenience the relevant parts of the tool will be described below.
The compression tool as shown in the Figures is for crimping electrical connectors to the ends of cables and includes a first pair of
It is known, from United Kingdom patent No. 1057515, (AMP Ref.
7106~, for a crimping tool to include two handle assemblies pivotally connected together and each pivotally connected to an individual lever jaw plate for controlling the movement of the lever ja~ plates towards and away from each other, the lever jaw plates being held in spaced opposed relationship by a tie plate to which they are both pivotally connected. The handles forming part of the handle assemblies are made very long for heavy duty applications in order to provide sufficient mechanical advantage at the lever jaw plates for crimping heavy duty connectors to the ends of heavy duty cables. For example, such a ; tool is used for crimping connectors to the ends of cables having a diameter of 16 millimetres.
! It has been found necessary, on occasions, not only to terminate heavy duty cable but also to sever such cable and the present invention is concerned with a tool similar to that disclosed in U.K. patent 1057515 but also having cutter blades for permitting the severance of heavy duty cable.
According to the present invention, a compression tool comprises two handle assemblies pivotally connected together and each pivotally connect-ed to an individual lever jaw plate for controlling the movement of the lever jaw plates towards and away from each other, the lever jaw plates being held in spaced, opposed relationship by a tie plate to which they are both pivotal-ly connected, and first and second cutter blades, the first cutter blade being pivotally connected to one lever jaw plate and having a cutting edge which extends beyond the second lever jaw plate, the second cutter blade being fixed relative to the second lever jaw plate for movement therewith and having a cutting edge facing the cutting edge of the first cutter blade so that on squeezing together the handle assemblies, the cutting edges move relatively . ~
.~,, ... , --- - - ,. , . . ., - ,. . , -. - . . .... . . ...... . . . . ........... . . .
:: . . . , , ; . -~050;253 towards each other to sever a workpiece when operatively positioned between the cutting edges.
In a preferred embodiment, two pairs of spaced lever jaw plates are provided, each pair being pivotally connected to one end of an individual link forming part of a handle assembly, the link being connected at an oppos-ite end to its respective handle, the first cutter blade being pivotally mounted on a pin extending between a first pair of lever jaw plates and pass-ing between the second pair of lever jaw plates, the second cutter blade being fixed between the second pair of lever jaw plates by a lug on the cutter blade which engages in a corresponding hole in one jaw plate of the second pair and having an arcuate recess in the second cutter blade which engages over a pin extending between the second pair of lever jaw plates, the first cutter blade being a slide fit between the second cutter blade and a lever jaw plate of the second pair.
An embodiment of the invention will now be described, by way of example, reference being made to the Figures of the accompanying diagra~matic drawings in which:-Figure 1 is a front elevation of a compression tool in its closed position;
Figure 2 is a front elevation of the tool of Figure 1 showing parts of the tool in an open position;
Figure 3 is a cross-section on the line 3-3 of Figure 1; and Figure 4 is a cross-section on the line line 4-4 of Figure l;
The tool of the present invention is similar in many respects to the tool disclosed in U.K. patent 1057515, but for convenience the relevant parts of the tool will be described below.
The compression tool as shown in the Figures is for crimping electrical connectors to the ends of cables and includes a first pair of
- 2 -.~: . ~ . - ......... , . : . .
. . ~ . : - . . .
.. . . . .
spaced lever jaw plates 4 and a second pair of spaced lever jaw plates 2.
The ]ever jaw plates 2, 4 are held in spaced, opposed relationship by tie plates 6 (only one of which is shown) to which both pairs of lever jaw plates are pivotally connected by bolts 8, 10. Lever jaw plates 2, 4 are pivotally connected by pivot joints 12, 14 at their respective lower end portions to -one end of links 16, 18 each of which forms part of a handle assembly. The links 16, 18 in turn are connected by fasteners 20, 22 to handles 15, 17 also forming part of the handle assemblies. The handle assemblies are centrally connected one to the other by a pivot joint 24.
The handles 15, 17 control the movement of the jaw plates 2, 4 towards and away from each other. When the handles 15, 17 are moved apart, (see Figure 2), the links 16, 18 will cause the respective lever jaw plates 2, 4 to pivot about the bolts 8, 10 so that the upper end portions of the lever jaw plates 2, 4 will move apart. Conversely, when the handles are squeezed together the lever jaw plates 2,4 will be caused to pivot about the bolts 8, 10 so that the upper end portions of the leYer jaw plates 2, 4 will move together. A more detailed description of the parts of the compression tool mentioned above can be found in U.K. patent No. 1057515.
A pivot pin 30 extends between the first pair of lever jaw plates 4 and is held in place by a lock washer 31. Pivotally mounted on the pin 30 is a first cutter blade 32. The cutter blade 32 extends from the first pair of lever jaw plates 4 across the face of the tool and between the second pair of lever jaw plates 2 and has a cutting edge 36 which is arranged laterally outwardly beyond the lever jaw plates 2. A second cutter blade 38 is fixed relative to the lever jaw plates 2 for movement therewith, by means of a cylindrical lug 42 and an arcuate recess 44. The lug 42 is located in a , cylindrical hole in the front (as shown) lever jaw plate 2 and the arcuate recess 44 engages over a pin 46 extending between the second pair of lever jaw
. . ~ . : - . . .
.. . . . .
spaced lever jaw plates 4 and a second pair of spaced lever jaw plates 2.
The ]ever jaw plates 2, 4 are held in spaced, opposed relationship by tie plates 6 (only one of which is shown) to which both pairs of lever jaw plates are pivotally connected by bolts 8, 10. Lever jaw plates 2, 4 are pivotally connected by pivot joints 12, 14 at their respective lower end portions to -one end of links 16, 18 each of which forms part of a handle assembly. The links 16, 18 in turn are connected by fasteners 20, 22 to handles 15, 17 also forming part of the handle assemblies. The handle assemblies are centrally connected one to the other by a pivot joint 24.
The handles 15, 17 control the movement of the jaw plates 2, 4 towards and away from each other. When the handles 15, 17 are moved apart, (see Figure 2), the links 16, 18 will cause the respective lever jaw plates 2, 4 to pivot about the bolts 8, 10 so that the upper end portions of the lever jaw plates 2, 4 will move apart. Conversely, when the handles are squeezed together the lever jaw plates 2,4 will be caused to pivot about the bolts 8, 10 so that the upper end portions of the leYer jaw plates 2, 4 will move together. A more detailed description of the parts of the compression tool mentioned above can be found in U.K. patent No. 1057515.
A pivot pin 30 extends between the first pair of lever jaw plates 4 and is held in place by a lock washer 31. Pivotally mounted on the pin 30 is a first cutter blade 32. The cutter blade 32 extends from the first pair of lever jaw plates 4 across the face of the tool and between the second pair of lever jaw plates 2 and has a cutting edge 36 which is arranged laterally outwardly beyond the lever jaw plates 2. A second cutter blade 38 is fixed relative to the lever jaw plates 2 for movement therewith, by means of a cylindrical lug 42 and an arcuate recess 44. The lug 42 is located in a , cylindrical hole in the front (as shown) lever jaw plate 2 and the arcuate recess 44 engages over a pin 46 extending between the second pair of lever jaw
- 3 -~0S022~:~
plates 2. As shown in Figures 1 and 2, the cutter blade 32 extends behind the cutter blade 38 and is a slide fit between the cutter blade 38 and the rear one (as shown) of the jaw plates 2. The cutter blade 38 has a cutting edge 48 facing the cutting edge 36.
When the handles 15, 17 are squeezed together the cutting edges 36, 48 of the cutter blades 32, 38 will move relatively towards each other to sever a cable when operatively positioned between the cutting edges. When the handles 15, 17 are in their open position it is possible to pivot the cutter blade 32 about the pin 30 upwardly as shown in Figures 1 and 2 to enlarge the space between the opposed cutting edges 36, 48. This facilitates entry of a cable between the cutting edges.
An advantage of the embodiment described above is that the mechanical advantage offered at the lever jaw plates 2, 4 by the long handles 15, 17 for crimping a connector to the end of a cable is utilized to sever cables by means o~ the cutter blades 32, 38. Purther, the cutter blades can quickly and easily be assembled to an existing tool and in the case of the tool disclosed in U.K. patent 1057515, the tool requires no or substantially no modification. A still further advantage is the fact that one cutter blade 32 is pivotally mounted, which enables large work pieces such as thick cables to be inserted between the cutting edges 36, 48 when the handles 15, 17 are in their open position.
Although both cutting edges 36, 48 have been shown as having a radial cutting profile it is envisaged that straight chamfered cutting edges could be used.
..
.
.
.- . : . . . .
plates 2. As shown in Figures 1 and 2, the cutter blade 32 extends behind the cutter blade 38 and is a slide fit between the cutter blade 38 and the rear one (as shown) of the jaw plates 2. The cutter blade 38 has a cutting edge 48 facing the cutting edge 36.
When the handles 15, 17 are squeezed together the cutting edges 36, 48 of the cutter blades 32, 38 will move relatively towards each other to sever a cable when operatively positioned between the cutting edges. When the handles 15, 17 are in their open position it is possible to pivot the cutter blade 32 about the pin 30 upwardly as shown in Figures 1 and 2 to enlarge the space between the opposed cutting edges 36, 48. This facilitates entry of a cable between the cutting edges.
An advantage of the embodiment described above is that the mechanical advantage offered at the lever jaw plates 2, 4 by the long handles 15, 17 for crimping a connector to the end of a cable is utilized to sever cables by means o~ the cutter blades 32, 38. Purther, the cutter blades can quickly and easily be assembled to an existing tool and in the case of the tool disclosed in U.K. patent 1057515, the tool requires no or substantially no modification. A still further advantage is the fact that one cutter blade 32 is pivotally mounted, which enables large work pieces such as thick cables to be inserted between the cutting edges 36, 48 when the handles 15, 17 are in their open position.
Although both cutting edges 36, 48 have been shown as having a radial cutting profile it is envisaged that straight chamfered cutting edges could be used.
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.
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.- . : . . . .
Claims (2)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS;
1. A compression tool comprising two handle assemblies pivotally connected together and each pivotally connected to an individual lever jaw plate for controlling the movement of the lever jaw plates towards and away from each other, the lever jaw plates being held in spaced, opposed relation-ship by a tie plate to which they are both pivotally connected, and first and second cutter blades, the first cutter blade being pivotally connected to one lever jaw plate and having a cutting edge which extends beyond the second lever jaw plate, the second cutter blade being fixed relative to the second lever jaw plate for movement therewith and having a cutting edge facing the cutting edge of the first cutter blade so that on squeezing together the handle assemblies, the cutting edges move relatively towards each other to sever a workpiece when operatively positioned between the cutting edges.
2. A compression tool as claimed in claim 1 in which two pairs of spaced lever jaw plates are provided, each pair being pivotally connected to one end of an individual link forming part of a handle assembly, the link be-ing connected at an opposite end to its respective handle, the first cutter blade being pivotally mounted on a pin extending between a first pair of lever jaw plates and passing between the second pair of lever jaw plates, the second cutter blade being fixed between the second pair of lever jaw plates by a lug on the cutter blade which engages in a corresponding hole in one jaw plate of the second pair and having an arcuate recess in the second cutter blade which engages over a pin extending between the second pair of lever jaw plates, the first cutter blade being slide fit between the second cutter blade and a lever jaw plate of the second pair.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5156075A GB1513299A (en) | 1975-12-17 | 1975-12-17 | Compression tools |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1050253A true CA1050253A (en) | 1979-03-13 |
Family
ID=10460491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA266,407A Expired CA1050253A (en) | 1975-12-17 | 1976-11-23 | Compression tools |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5278200A (en) |
| BR (1) | BR7608458A (en) |
| CA (1) | CA1050253A (en) |
| DE (1) | DE2657056A1 (en) |
| ES (1) | ES454290A1 (en) |
| FR (1) | FR2335313A1 (en) |
| GB (1) | GB1513299A (en) |
| IT (1) | IT1123086B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2457982A (en) * | 2008-03-04 | 2009-09-09 | Hellermanntyton Data Ltd | Tool to join electrical cable to jack |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3345856A (en) * | 1964-12-23 | 1967-10-10 | Amp Inc | Tool for crimping electrical connectors |
| US3872529A (en) * | 1973-06-28 | 1975-03-25 | Richard A Wainwright | Warning device |
| US3965719A (en) * | 1974-11-11 | 1976-06-29 | Amp Incorporated | Cutting attachment for crimping tool |
-
1975
- 1975-12-17 GB GB5156075A patent/GB1513299A/en not_active Expired
-
1976
- 1976-11-23 CA CA266,407A patent/CA1050253A/en not_active Expired
- 1976-11-30 IT IT2993776A patent/IT1123086B/en active
- 1976-12-09 JP JP51148288A patent/JPS5278200A/en active Pending
- 1976-12-16 DE DE19762657056 patent/DE2657056A1/en active Pending
- 1976-12-16 ES ES454290A patent/ES454290A1/en not_active Expired
- 1976-12-16 FR FR7637932A patent/FR2335313A1/en not_active Withdrawn
- 1976-12-16 BR BR7608458A patent/BR7608458A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5278200A (en) | 1977-07-01 |
| GB1513299A (en) | 1978-06-07 |
| FR2335313A1 (en) | 1977-07-15 |
| DE2657056A1 (en) | 1977-06-30 |
| ES454290A1 (en) | 1977-12-16 |
| BR7608458A (en) | 1977-11-29 |
| IT1123086B (en) | 1986-04-30 |
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