CA1181638A - Applicator tool - Google Patents
Applicator toolInfo
- Publication number
- CA1181638A CA1181638A CA000393335A CA393335A CA1181638A CA 1181638 A CA1181638 A CA 1181638A CA 000393335 A CA000393335 A CA 000393335A CA 393335 A CA393335 A CA 393335A CA 1181638 A CA1181638 A CA 1181638A
- Authority
- CA
- Canada
- Prior art keywords
- lever
- movement
- applicator tool
- retention means
- link member
- 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
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Abstract
ABSTRACT OF DISCLOSURE
An animal ear tag applicator tool which includes spaced apart first and second retention means each of which is adapted to retain an animal ear tag part. The tool has a body to which is pivotally attached a lever, Movement of the lever toward handle of body results in rectilinear movement of the first retention means toward the second retention means. The tool is characterised by linkage means which transforms pivotal movement of the lever into a varying speed rectilinear movement of the first retention means toward the second retention means relative to the movement of the lever itself.
An animal ear tag applicator tool which includes spaced apart first and second retention means each of which is adapted to retain an animal ear tag part. The tool has a body to which is pivotally attached a lever, Movement of the lever toward handle of body results in rectilinear movement of the first retention means toward the second retention means. The tool is characterised by linkage means which transforms pivotal movement of the lever into a varying speed rectilinear movement of the first retention means toward the second retention means relative to the movement of the lever itself.
Description
AN APPLICATOR TOOL
This invention relates to an applicator tool which is particularly suited for the application of ear tags to animals.
Many forms of applicator tools are known whereby an ear tag can be applied to the ear of an animal. The most common applicator tool is of a pllers type which comprises a pair of levers pivotally coupled together. To one side of the pivot the levers are formed as handles whilst on the other side they are formed as jaws which have retentlon means for retaining an animal ear tag part. Such an applicator tool is shown in our United States Patent Specification No. 3,812,8S9. A development of this general pliers type tool is exemplified in our United States Patent Specification No. 4,120,303 where the tool has means to cause the jaws to retract immediately the tag has been installed in the ear of the animal.
One of the problems associated with a pliers type applicator is that the jaws of the tool move on an arc which can lead to misalignment of one tag part in relation to the other during installation of the tag in the animal's ear. Accordingly, ~, .
applicator tools have been developed whereby one retention means moves rectilinearly relative to the other. ~uch an applicator tool is disclosed in our United States Patent Specification No.
4,185,635. This applicator tool not only has one of the retention ~leans moving rectilinearly relative to one another but also has automatic retraction means such that upon completion of installation of the tag the movable retention means retracts.
One of the criteria which must be met with an applicator tool is that there must be sufficient space between the parts of the tag when retained by the retention means to facilitate the easy positioning therebetween of the ear of an animal. One way in which this gap can be obtained is to have the jaws pivot sufficiently away from one another when the applicator tool is opened. In this manner the required gap is provided, however, the applicator is often difficult to handle due to the handles thereof being too far apart for ease of use.
An applicator tool only requires a high lever force durlng actual penetration of the tag into the animal's ear and the coupl ng of the male and female parts of the tag. This high lever force is thus only needed for part of the total relative movement of the retention means and thus the ear tag parts toward one another.
Broadly, the present invention provides an animal ear tag applicator tool comprising spaced apart first and second retention means, each of which is adapted to retain an animal ear Ei3~
tag part and lever means mounted for pivotal movement to facilitate movement of one of said retention means relative towards the other and characterised in that means are provided, which in use of the applicator tool, transform pivotal movement of said lever means into a varying speed rectilinear movement of the retention means relative to the movement of the lever means.
In one form of the invention the tool comprises a body having a handle. A lever is pivotally coupled to the body and is interconnected to a movable member which has said first retention means. The second retention means is preferably mounted on an anvil which is located on said body.
In a preferred form the lever is interconnected to the movable member by a linkage which comprises an arm fixedly coupled to the lever. The arm is pivotally coupled to a link member which has a cam surface engaging against a fixed guide attached to the body. The cam surface is so profiled that durin~
linear movement of the lever about its pivot axis the link member causes the movable member to move at a speed which decreases as the first retention means approaches the second retention means.
Preferably means are provided for automatic retraction of the movable member immediately the first retention means has reached a determined distance from said fixed second retention means.
To more fully describe the invention according to a preferred form reference will be made to the accompanying drawings in which:-i3~
~ igure 1 is a partially sectioned side view of theapplicator tool ready for use, Figure 2 is a similar view to Figure 1 but showing the applicator at the instant the tag parts (not shown) are coupled together, Figure 3 is a further view similar to Figures 1 and 2 but with the first retention means retracted after completion of application of the ear tag parts, and Figure 4 is a detailed side view of the link member 27 and its fixed guide pin 32 which illustrates the movement of link member.
The body 10 of the applicator tool comprises a handle 11, a main body portion 12 and an anvil 13. The anvil 13 is preferably mounted to the forward end of main body portion 12 and can be rotatable thereon to facilitate adjustment of the disposition of the outer leg portion 13b relative to handle 11. Anvil 13 t which is generally of U-shape when viewed side on, thus has an annular portion 14 at the end of one leg 13a thereof which is mounted on the main body portion 12. The other leg 13b of anvil 13 includes the second retention means 15 for retaining a part of an animal ear tag.
With the illustrated applicator the retention means 15 is designed to retain the female portion of a tag which can, for example, be a two piece tag of the type illustrated in United States Patent Specification No. 3,731,414 or a one piece tag of 31!~
the type illusteated in ~nited States Patent Specification No.
4,060,922. As shown, retention means 15 comprises a lever 16 pivoted at 16a approximately medially in its length. Lever 16 is biassed by a spring 17 to take up the position as shown in Figure 1. The free end of lever 16 is located opposite a recess 16b so that the bossed portion of the female part of the ear tag can be located therein and retained by the free end of lever 16. It will be realised by those skilled in the art that retention means 15 can take many different forms depending on the type of tag to be applied.
A lever 18 is pivotally attached by one end at 19 to main body portion 12. This lever 18 is shaped into the form of a handle so that it can be comfortably gripped by the fingers of a user. The pivoted end of the lever 18 is provided with a mounting 20 which can be attached directly to lever 18, however, as shown, mounting 20 is formed as a pair of spaced apart members 20a (only one being shown because of the sectioned view) which is pivotal about the pivot pin 19 independent of lever 18. Mounting 20 is coupled to lever 18 by a linkage 22 which is pivotally coupled at one end by pivot pin 23a between mounting members 20a and at its other end by pivot 23b to lever 18. Linkage 22 is actually formed in two parts 24a and 24b which are pivotally linked together at 25 for reasons which will hereinafter become apparent. Linkage 22 takes up an "over cen~re" position, in a typical toggle link fashion, which is restricted by stop 26. To urge linkage 22 into engagement i~ith stop 2~ a small coil return spring 45 can be provided and extends between a fixture on lever 18 and linkage part 24b.
~ ounting 20 is pivotally connected at 28 to a link member 27. This link member 27 is in turn engaged at one end at 29 with a bifurcated pressure pad 30. I'he other end 31 of the link member 27 is hook shaped and engages about a guide pin 32 which is fi~edly mounted on the main body por~ion 12 and is located within a curved slot in mounting members 20a. The function of link member 27 will hereinafter be described.
The applicator as illustrated is of a type for application of tags as disclosed in the aforesaid United States Patent SpeciEication Nos 3,731,414 and 4,060,922. Accordingly the aforementioned first retention means is a pin 33. A member 34, which is preferably cylindrical, is mounted for sliding movement within the main body portion 12 and applicator pin 33 is mounted on the outer end thereof. As shown pin 33 can be integral with member 34. The inner end of cylindrical member 34 is provided with ,pressure pad 30. A first spring 35 is pqsitioned on the cylindrical member 34 to extend between the pressure pad 30 and a bearing 37 which is mounted in main body portion 12 and in wnich cylindrical member 34 is slidingly mounted. The spring 35 biasses cylindrical member 34 to the position shown in Figure 1.
An abutment 38 is mounted by main body portion 12 at or adjacent the upper end of handle 11. This abutment 38 is 3~
conveniently formed by a projection 39 formed integrally with handle 11.
The operation of the applicator tool will now be described.
As lever 18 is moved in the direction of the arrow i.n Figure 1 this rotary movement is imparted to mounting 20 via linkage 22.
Accordingly pivot 28 moves counter clockwise about pivot 19.
This causes the hook shaped end 31 of link member 27 to move about fixed pin 32 and thus pressure applied by curved end 29 to pressure pad 30 moves cylindrical member 34 toward the second retention means 15.
Referring more particularly to Figure 4 of the drawings it will be seen that end portion of hook shaped end 31 of link member 27 is profiled to effectively form a cam surface 44 which engages with a fi~ed guide pin 32. Accordingly as the lever 18 is moved toward handle 11, link member 27 is not only moved by mounting 20 about pivot 19 but its atti.tude is altered by the interengagement of profiled cam surface 44 and fixed pin 32.
This results in the transformation of a linear rotary movement of the lever 18 into a variable speed movement of pivot 29. To illustrate this Figure 4 contains a plot of the angular displacement of lever 18 about pivo-t 19 in relation to the non-linear movement of pivot 29. For example, during the first 10 of movement of lever 18 the pivot 29 moves over half i~s full distance of throw, whilst in the final 20 of movement of lever 18, pivot 29 moves a distance which is approximately the same as 3~
that achieved in about 4-5 movement at the initial stages of movement of lever 18.
When a tag is installed in the applicator and the animal's eae is positioned in anvil 13, applicator pin 33 is rapidly brought into contact with the ear by only a small degree of movement of lever 18. However, during installation of the tag where a high lever force is required the ratio of movement of applicator pin 33 to the movement of lever 18 alters so that a greater degree of movement of the lever is needed to move the applicator pin through its final stages of movement. The full force of the leverage is thus utilised.
When lever 18 has reached the position shown in Figure 2 t i.e. installation of the tag has been completed (see left hand side of Figure 4 showing ear tag parts A and B coupled together), the abutment 38 abuts with linkage 22 to push the linkage over centre which allows mounting 20 to move independently of lever 18. This permits spring 35 and second spring 36 which has also been compressed to drive pressure pad 30 backward and so retract member 34 into main body portion 12 as illustrated by Figure 3.
The applicator pin 33 is thus automatically removed from the tag immediately installation of the tag has been completed. Return of lever 18 to the position shown on Figure 1 renders the applicator ready for its next operation. A coil spring 45 lS
provided to force mounting 20 back into its rest position whilst spring 46 facilitates return of lever 18 to the open position.
3~
g The point at which member 34 automatically retracts could be adjusted by constructing the abutment 38 to be adjustable in position. This can be achieved by abutment 38 being an adjustable rod. Accordingly automatic retraction of pin 33 can be adjusted for the position of closest approach of pin 33 to second retention means lS which is dictated by the completion of coupling of ear tag part A with ear tag part B.
The adjustability of anvil 13 by its ability to be rotated about main body portion 12 permits the tag to be applied from both over or under the ear of the animal whilst still maintaining body lO in an upright orientation. Means can be provided for locking the anvil in various positions if required.
Different forms of linkage between the lever 18 and the movable element, in this case member 34, can be devised to transform the linear movement of the lever 18 into a non-linear movement of the movable member. In addition the profile of cam surface 44 of link member 27 can be altered to provide different variations in the ratio of speed of movement of the movable membe~ eelative to the lever. /
The invention provides an applicator tool whereby the first retention means moves during initial operation of the tool rapidly toward second retention means 15 but then slows down during the actual installation of the tag to the animal's ear.
This means that during initial operation of the tool the lever 18 only needs to be moved a small distance for a considerable advancement of the first retention means. However, during the critical installation procedure a far greater degree of movement of the lever is required to achieve the necessary movement of the headed stem of the male component ~ of the tag through the animal's ear and into its coupling arrangement with the female component A of the tag.
~ he applicator tool according to the invention thus has retention means which are sufficiently spaced apart to permit ready positioning on an animal's ear therebetween. In addition, however, there is provided the added advantage of an applicator tool having a lever ratio which is higher than that obtained wlth equivalent sized known applicators. For example, most known applicators have a lever ratio of approximately 2:1 and adequate space for the positioning of the animal's ear between the tag parts when installed in the applicator. Usually any increase in the space between the ear tag parts results in a lowering of the lever ratio especially if the applicator tool is to remain of dimensions which are easily handled by the user. With the applicator of the present invention a good distance between the ear tag parts is achieved without any sacrifice of the lever ratioO In fact, the applicator can have a lever ratio at the actual installation of the tag in the order of 3:1. Thls means that the high lever ratio is attained at the precise moment it is required which is at installation of the tag.
The applicator tool accordin~ to this invention can be used in applications other than applying a tag to an animal. For example, the tool can equally be used as an applicator for rivet or like fastenings after suitable modifications.
This invention relates to an applicator tool which is particularly suited for the application of ear tags to animals.
Many forms of applicator tools are known whereby an ear tag can be applied to the ear of an animal. The most common applicator tool is of a pllers type which comprises a pair of levers pivotally coupled together. To one side of the pivot the levers are formed as handles whilst on the other side they are formed as jaws which have retentlon means for retaining an animal ear tag part. Such an applicator tool is shown in our United States Patent Specification No. 3,812,8S9. A development of this general pliers type tool is exemplified in our United States Patent Specification No. 4,120,303 where the tool has means to cause the jaws to retract immediately the tag has been installed in the ear of the animal.
One of the problems associated with a pliers type applicator is that the jaws of the tool move on an arc which can lead to misalignment of one tag part in relation to the other during installation of the tag in the animal's ear. Accordingly, ~, .
applicator tools have been developed whereby one retention means moves rectilinearly relative to the other. ~uch an applicator tool is disclosed in our United States Patent Specification No.
4,185,635. This applicator tool not only has one of the retention ~leans moving rectilinearly relative to one another but also has automatic retraction means such that upon completion of installation of the tag the movable retention means retracts.
One of the criteria which must be met with an applicator tool is that there must be sufficient space between the parts of the tag when retained by the retention means to facilitate the easy positioning therebetween of the ear of an animal. One way in which this gap can be obtained is to have the jaws pivot sufficiently away from one another when the applicator tool is opened. In this manner the required gap is provided, however, the applicator is often difficult to handle due to the handles thereof being too far apart for ease of use.
An applicator tool only requires a high lever force durlng actual penetration of the tag into the animal's ear and the coupl ng of the male and female parts of the tag. This high lever force is thus only needed for part of the total relative movement of the retention means and thus the ear tag parts toward one another.
Broadly, the present invention provides an animal ear tag applicator tool comprising spaced apart first and second retention means, each of which is adapted to retain an animal ear Ei3~
tag part and lever means mounted for pivotal movement to facilitate movement of one of said retention means relative towards the other and characterised in that means are provided, which in use of the applicator tool, transform pivotal movement of said lever means into a varying speed rectilinear movement of the retention means relative to the movement of the lever means.
In one form of the invention the tool comprises a body having a handle. A lever is pivotally coupled to the body and is interconnected to a movable member which has said first retention means. The second retention means is preferably mounted on an anvil which is located on said body.
In a preferred form the lever is interconnected to the movable member by a linkage which comprises an arm fixedly coupled to the lever. The arm is pivotally coupled to a link member which has a cam surface engaging against a fixed guide attached to the body. The cam surface is so profiled that durin~
linear movement of the lever about its pivot axis the link member causes the movable member to move at a speed which decreases as the first retention means approaches the second retention means.
Preferably means are provided for automatic retraction of the movable member immediately the first retention means has reached a determined distance from said fixed second retention means.
To more fully describe the invention according to a preferred form reference will be made to the accompanying drawings in which:-i3~
~ igure 1 is a partially sectioned side view of theapplicator tool ready for use, Figure 2 is a similar view to Figure 1 but showing the applicator at the instant the tag parts (not shown) are coupled together, Figure 3 is a further view similar to Figures 1 and 2 but with the first retention means retracted after completion of application of the ear tag parts, and Figure 4 is a detailed side view of the link member 27 and its fixed guide pin 32 which illustrates the movement of link member.
The body 10 of the applicator tool comprises a handle 11, a main body portion 12 and an anvil 13. The anvil 13 is preferably mounted to the forward end of main body portion 12 and can be rotatable thereon to facilitate adjustment of the disposition of the outer leg portion 13b relative to handle 11. Anvil 13 t which is generally of U-shape when viewed side on, thus has an annular portion 14 at the end of one leg 13a thereof which is mounted on the main body portion 12. The other leg 13b of anvil 13 includes the second retention means 15 for retaining a part of an animal ear tag.
With the illustrated applicator the retention means 15 is designed to retain the female portion of a tag which can, for example, be a two piece tag of the type illustrated in United States Patent Specification No. 3,731,414 or a one piece tag of 31!~
the type illusteated in ~nited States Patent Specification No.
4,060,922. As shown, retention means 15 comprises a lever 16 pivoted at 16a approximately medially in its length. Lever 16 is biassed by a spring 17 to take up the position as shown in Figure 1. The free end of lever 16 is located opposite a recess 16b so that the bossed portion of the female part of the ear tag can be located therein and retained by the free end of lever 16. It will be realised by those skilled in the art that retention means 15 can take many different forms depending on the type of tag to be applied.
A lever 18 is pivotally attached by one end at 19 to main body portion 12. This lever 18 is shaped into the form of a handle so that it can be comfortably gripped by the fingers of a user. The pivoted end of the lever 18 is provided with a mounting 20 which can be attached directly to lever 18, however, as shown, mounting 20 is formed as a pair of spaced apart members 20a (only one being shown because of the sectioned view) which is pivotal about the pivot pin 19 independent of lever 18. Mounting 20 is coupled to lever 18 by a linkage 22 which is pivotally coupled at one end by pivot pin 23a between mounting members 20a and at its other end by pivot 23b to lever 18. Linkage 22 is actually formed in two parts 24a and 24b which are pivotally linked together at 25 for reasons which will hereinafter become apparent. Linkage 22 takes up an "over cen~re" position, in a typical toggle link fashion, which is restricted by stop 26. To urge linkage 22 into engagement i~ith stop 2~ a small coil return spring 45 can be provided and extends between a fixture on lever 18 and linkage part 24b.
~ ounting 20 is pivotally connected at 28 to a link member 27. This link member 27 is in turn engaged at one end at 29 with a bifurcated pressure pad 30. I'he other end 31 of the link member 27 is hook shaped and engages about a guide pin 32 which is fi~edly mounted on the main body por~ion 12 and is located within a curved slot in mounting members 20a. The function of link member 27 will hereinafter be described.
The applicator as illustrated is of a type for application of tags as disclosed in the aforesaid United States Patent SpeciEication Nos 3,731,414 and 4,060,922. Accordingly the aforementioned first retention means is a pin 33. A member 34, which is preferably cylindrical, is mounted for sliding movement within the main body portion 12 and applicator pin 33 is mounted on the outer end thereof. As shown pin 33 can be integral with member 34. The inner end of cylindrical member 34 is provided with ,pressure pad 30. A first spring 35 is pqsitioned on the cylindrical member 34 to extend between the pressure pad 30 and a bearing 37 which is mounted in main body portion 12 and in wnich cylindrical member 34 is slidingly mounted. The spring 35 biasses cylindrical member 34 to the position shown in Figure 1.
An abutment 38 is mounted by main body portion 12 at or adjacent the upper end of handle 11. This abutment 38 is 3~
conveniently formed by a projection 39 formed integrally with handle 11.
The operation of the applicator tool will now be described.
As lever 18 is moved in the direction of the arrow i.n Figure 1 this rotary movement is imparted to mounting 20 via linkage 22.
Accordingly pivot 28 moves counter clockwise about pivot 19.
This causes the hook shaped end 31 of link member 27 to move about fixed pin 32 and thus pressure applied by curved end 29 to pressure pad 30 moves cylindrical member 34 toward the second retention means 15.
Referring more particularly to Figure 4 of the drawings it will be seen that end portion of hook shaped end 31 of link member 27 is profiled to effectively form a cam surface 44 which engages with a fi~ed guide pin 32. Accordingly as the lever 18 is moved toward handle 11, link member 27 is not only moved by mounting 20 about pivot 19 but its atti.tude is altered by the interengagement of profiled cam surface 44 and fixed pin 32.
This results in the transformation of a linear rotary movement of the lever 18 into a variable speed movement of pivot 29. To illustrate this Figure 4 contains a plot of the angular displacement of lever 18 about pivo-t 19 in relation to the non-linear movement of pivot 29. For example, during the first 10 of movement of lever 18 the pivot 29 moves over half i~s full distance of throw, whilst in the final 20 of movement of lever 18, pivot 29 moves a distance which is approximately the same as 3~
that achieved in about 4-5 movement at the initial stages of movement of lever 18.
When a tag is installed in the applicator and the animal's eae is positioned in anvil 13, applicator pin 33 is rapidly brought into contact with the ear by only a small degree of movement of lever 18. However, during installation of the tag where a high lever force is required the ratio of movement of applicator pin 33 to the movement of lever 18 alters so that a greater degree of movement of the lever is needed to move the applicator pin through its final stages of movement. The full force of the leverage is thus utilised.
When lever 18 has reached the position shown in Figure 2 t i.e. installation of the tag has been completed (see left hand side of Figure 4 showing ear tag parts A and B coupled together), the abutment 38 abuts with linkage 22 to push the linkage over centre which allows mounting 20 to move independently of lever 18. This permits spring 35 and second spring 36 which has also been compressed to drive pressure pad 30 backward and so retract member 34 into main body portion 12 as illustrated by Figure 3.
The applicator pin 33 is thus automatically removed from the tag immediately installation of the tag has been completed. Return of lever 18 to the position shown on Figure 1 renders the applicator ready for its next operation. A coil spring 45 lS
provided to force mounting 20 back into its rest position whilst spring 46 facilitates return of lever 18 to the open position.
3~
g The point at which member 34 automatically retracts could be adjusted by constructing the abutment 38 to be adjustable in position. This can be achieved by abutment 38 being an adjustable rod. Accordingly automatic retraction of pin 33 can be adjusted for the position of closest approach of pin 33 to second retention means lS which is dictated by the completion of coupling of ear tag part A with ear tag part B.
The adjustability of anvil 13 by its ability to be rotated about main body portion 12 permits the tag to be applied from both over or under the ear of the animal whilst still maintaining body lO in an upright orientation. Means can be provided for locking the anvil in various positions if required.
Different forms of linkage between the lever 18 and the movable element, in this case member 34, can be devised to transform the linear movement of the lever 18 into a non-linear movement of the movable member. In addition the profile of cam surface 44 of link member 27 can be altered to provide different variations in the ratio of speed of movement of the movable membe~ eelative to the lever. /
The invention provides an applicator tool whereby the first retention means moves during initial operation of the tool rapidly toward second retention means 15 but then slows down during the actual installation of the tag to the animal's ear.
This means that during initial operation of the tool the lever 18 only needs to be moved a small distance for a considerable advancement of the first retention means. However, during the critical installation procedure a far greater degree of movement of the lever is required to achieve the necessary movement of the headed stem of the male component ~ of the tag through the animal's ear and into its coupling arrangement with the female component A of the tag.
~ he applicator tool according to the invention thus has retention means which are sufficiently spaced apart to permit ready positioning on an animal's ear therebetween. In addition, however, there is provided the added advantage of an applicator tool having a lever ratio which is higher than that obtained wlth equivalent sized known applicators. For example, most known applicators have a lever ratio of approximately 2:1 and adequate space for the positioning of the animal's ear between the tag parts when installed in the applicator. Usually any increase in the space between the ear tag parts results in a lowering of the lever ratio especially if the applicator tool is to remain of dimensions which are easily handled by the user. With the applicator of the present invention a good distance between the ear tag parts is achieved without any sacrifice of the lever ratioO In fact, the applicator can have a lever ratio at the actual installation of the tag in the order of 3:1. Thls means that the high lever ratio is attained at the precise moment it is required which is at installation of the tag.
The applicator tool accordin~ to this invention can be used in applications other than applying a tag to an animal. For example, the tool can equally be used as an applicator for rivet or like fastenings after suitable modifications.
Claims (13)
1. An animal ear tag applicator tool comprising spaced apart first and second retention means, each of which is adapted to retain an animal ear tag part and lever means mounted for pivotal movement to facilitate relative movement of one of the first retention means toward the second retention means and characterised in that means are provided, which in use of the applicator tool, transform pivotal movement of said lever means into a varying speed rectilinear movement of the first retention means relative to the movement of the lever means.
2. An applicator tool as claimed in claim 1 wherein said second retention means is located in a fixed position on the tool and said first retention means is located on a member which is mounted for movement, by said lever means, toward and away from said second retention means.
3. An applicator tool as claimed in claim 2 wherein the lever means is connected to said movable member by a pivotally mounted link member, the movement of said link member about the axis of its pivot mount being controlled by cam means.
4. An applicator tool as claimed in claim 3 wherein the cam means comprises a cam surface on the link member and a fixed guide said guide being engaged with the cam surface.
5. An applicator tool as claimed in claim 4 wherein the movable member is located within a body, the second retention means being located on an anvil which is mounted on said body, the body further mounting a fixed handle and the lever means being a lever pivotally mounted on said body.
6. An applicator tool as claimed in claim 5 wherein the link member is pivotally coupled to said lever such that as the lever is pivoted toward said handle the pivot coupling of the link member to said lever is moved away from the fixed guide.
7. An applicator tool as claimed in claim 6 wherein the link member is engaged with the movable member at a point spaced from the pivot mount of the link to said lever, said guide member having an arcuate surface which is contacted by the cam surface of said link member such that linear rotary displacement of the lever is transformed into an overall non-linear movement of the part of the link member engaged with said movable member.
8. An applicator tool as claimed in claim 7 wherein said link member is coupled to an arm which is mounted for pivotal movement about the pivot axis of said lever, there being coupling means which prevent pivotal movement of said arm relative to said lever.
9. An applicator tool as claimed in claim 8 further including spring means which urge the movable member to move away from said second retention means, and actuating means which at a determined degree of movement of said lever toward said handle releases said coupling means to permit pivotal movement of the arm relative to said lever thereby allowing said movable member to retract away from the second retention means under the influence of said spring means.
10. An applicator tool as claimed in claim 8 or 9 wherein said coupling means comprises a pair of elongate links pivoted end to end with their other ends respectively pivotally coupled to the arm and lever.
11. An applicator tool as claimed in claim 9 wherein the actuating means is an abutment on said handle.
12. An applicator tool as claimed in claim 9 wherein the first retention means is a pin and the second retention means is a spring clip.
13. An applicator tool as claimed in claim 7 wherein the movable member is cylindrical in shape and is located for longitudinal sliding movement within a guide housing in said body, the first retention means being located at one end of the cylindrical member and the other end of the cylindrical member being engaged with a curved profile of the link member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000393335A CA1181638A (en) | 1981-12-29 | 1981-12-29 | Applicator tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000393335A CA1181638A (en) | 1981-12-29 | 1981-12-29 | Applicator tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1181638A true CA1181638A (en) | 1985-01-29 |
Family
ID=4121723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000393335A Expired CA1181638A (en) | 1981-12-29 | 1981-12-29 | Applicator tool |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1181638A (en) |
-
1981
- 1981-12-29 CA CA000393335A patent/CA1181638A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |