CA2022519A1 - Rapid jaw adjustment for tools and the like - Google Patents
Rapid jaw adjustment for tools and the likeInfo
- Publication number
- CA2022519A1 CA2022519A1 CA002022519A CA2022519A CA2022519A1 CA 2022519 A1 CA2022519 A1 CA 2022519A1 CA 002022519 A CA002022519 A CA 002022519A CA 2022519 A CA2022519 A CA 2022519A CA 2022519 A1 CA2022519 A1 CA 2022519A1
- Authority
- CA
- Canada
- Prior art keywords
- threads
- hand tool
- screw
- threaded opening
- jaw
- 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.)
- Abandoned
Links
- 239000011295 pitch Substances 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000013011 mating Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
- B25B7/12—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears
- B25B7/123—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears with self-locking toggle levers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
- Clamps And Clips (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Endoscopes (AREA)
- Paper (AREA)
- Sanitary Device For Flush Toilet (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A locking hand tool having a fixed handle with front and rear portions, a fixed jaw is connected to the front portion and a receiving part is located at the rear portion. A movable jaw is pivotally connected to the front portion of the fixed handle for cooperation with the fixed jaw. A movable handle is attached to the movable jaw. A toggle arrangement defined by at least one toggle member has first and second ends which are pivotally secured to the movable handle. An adjusting mechanism for adjusting the position of the movable jaw relative to the stationary jaw consists of a threaded opening positioned within the fixed handle, and a screw member having a first end adapted for hand rotation thereof and a second end contacting the second end of the toggle member.
The screw member has a plurality of multiple first individual threads with the same diameter and pitch throughout the entire length thereof. The threaded opening is provided with a plurality of multiple permanent second individual threads with the same diameter and pitch throughout the entire length thereof. The plurality of the second threads is adapted to engage the plurality of first threads of said screw member for rapid advancement of the screw member and motion of the jaws relative to each other.
A locking hand tool having a fixed handle with front and rear portions, a fixed jaw is connected to the front portion and a receiving part is located at the rear portion. A movable jaw is pivotally connected to the front portion of the fixed handle for cooperation with the fixed jaw. A movable handle is attached to the movable jaw. A toggle arrangement defined by at least one toggle member has first and second ends which are pivotally secured to the movable handle. An adjusting mechanism for adjusting the position of the movable jaw relative to the stationary jaw consists of a threaded opening positioned within the fixed handle, and a screw member having a first end adapted for hand rotation thereof and a second end contacting the second end of the toggle member.
The screw member has a plurality of multiple first individual threads with the same diameter and pitch throughout the entire length thereof. The threaded opening is provided with a plurality of multiple permanent second individual threads with the same diameter and pitch throughout the entire length thereof. The plurality of the second threads is adapted to engage the plurality of first threads of said screw member for rapid advancement of the screw member and motion of the jaws relative to each other.
Description
~ ~ S~ ~ r RA~ID JAW ADJUSTMENT FOR TOOLS AND THE LIKE
Backqround of The Invention This invention relates to hand tools, and more particularly to tools utilizing a pair of jaws for receiving a workpiece therebetween.
Common elements of locking pliers, locking wrenches and similar tools employing some form of locking toggle-actuation are a pair of stationary and movable jaws adapted to lock a workpiece therebetween. A mechanism with an adjusting element acting on the movable jaw is usually provided to adjust a gap between the jaws and to bring them into possible initial contact with a workpiece before huge forces of the toggle action are generated and applied.
The tools of the type presently described are usually used in the circumstances when fast and efficient adjustment of the gap between the jaws is not only highly desirable but absolutely necessary. One example of such use is a conveyor welding operation where a welder has a very short time for adjustment of the tool between welding together two separate pairs of elements having different dimensions. In this situation, it is extremely important to adjust the gap between the jaws of the locking tool to 2 ~
accommodate the dimensions of a new pair of elements as soon as possible.
A known type of prior art device makes such adjustment of a gap between the jaws by means of rotation of a single threaded, single pitch adjustment screw to which the movable jaw is connected directly or indirectly. This method and means of adjustment are necessarily slow and time consuming and result in loss of valuable time in adjusting the tools from one size to another.
8rief DescriPtion of The drawinqs Other advantages and features of the invention are described with reference to exemplary embodiments, which are intended to explain and not to limit the invention, and are illustrated in the drawings in which:
Fig. 1 is a side view of long-nose pliers utilizing the invention.
Fig. 2 is a side, partial cross-section view of pliers having curved jaws and utilizing the invention.
Fig. 3 is a partially, enlarged view of a threaded arrangement shown in Figs. 1 and 2.
Fig. 4 is an end view of a screw member.
Fig. 5 is a partial cross-section view of threads of the screw member.
Fig. 6 shows a partial view of a toggle-locking C-clamp.
Fig. 7 is a perspective view of a locking chain clamp.
Fig. 8 is a perspective view of a locking welding clamp.
Fig. 9 is a perspective view of a sheet metal tool.
DescriPtion Of The Preferred Embodiment Although a specific embodiment of the invention will now be described with reference to the drawings, it should be understood that the embodiment shown is by way of example only and merely illustrative of but one of the many possible specific embodiments which can represent applications of the principles of the invention. Various changes and modifications, obvious to one skilled in the art to which the invention pertains, are deemed to be within the spirit, scope and contemplation of the invention as further defined in the appended claims.
As best shown in Fig. 1, the long-nose locking pliers is generally designated by the reference numeral 10, and includes a handle member 12, and a movable clamping member or lower jaw 14.
The handle member 12 is provided with a stationary clamping element or upper jaw 16. A toggle mechanism comprises an elongated handle member 18 and a toggle-link member 20 which is conventionally pivotally engaged at one end about the pin 22. The other free end (shown in phantom) of the toggle link member 20 is engaged with the handle member 12, and in particular the abutment end (also shown in phantom) of an adjustment screw member 24 which is suitably threadably engaged at the end of the handle member 12. Operation of the screw member will be discussed in full detail later in this application. The forward end of the handle member 18 is preferably bifurcated or forked, and a corner portion of the movable clamping member 14 is suitably disposed within the fork or between the bifurcation arms by pivot pin means 19. Similarly, the hand,e member 12 is preferably channel-shaped, and receives another corner portion of the movable clamping elemeni 14 which is also suitably secured thereto by means of a pivot pin 17.
Spring means 25, preferably in the form of an extension coil spring, is secured between the handle member 12 and the movable clamping element 14 or lower jaw, to urge the clamping element 14 away from the stationary clamping element when the jaws are opened.
An elongated release lever 28 is suitably pivotally mounted by means of a pin 30, to the inside of the handle member 18, and is provided with a forwardly extending portion (as shown in phantom) and is engageable with a projection 32 of the toggle-like ~ember 20 which extends toward the handle member 18. When the release lever 28 is pivoted about the pin 30, the handle member 12 is moved away from the handle member 18.
It will be appreciated that the wrench or locking pliers Dechanism and toggle construction described herein, with some exceptions, conforms basically in accordance with the construction described in U.S. Patent No. 1,489,458. Furthermore, such construction, the operation thereof, and the specific operation of the release lever is clearly set forth in U.S. Patent No.
Backqround of The Invention This invention relates to hand tools, and more particularly to tools utilizing a pair of jaws for receiving a workpiece therebetween.
Common elements of locking pliers, locking wrenches and similar tools employing some form of locking toggle-actuation are a pair of stationary and movable jaws adapted to lock a workpiece therebetween. A mechanism with an adjusting element acting on the movable jaw is usually provided to adjust a gap between the jaws and to bring them into possible initial contact with a workpiece before huge forces of the toggle action are generated and applied.
The tools of the type presently described are usually used in the circumstances when fast and efficient adjustment of the gap between the jaws is not only highly desirable but absolutely necessary. One example of such use is a conveyor welding operation where a welder has a very short time for adjustment of the tool between welding together two separate pairs of elements having different dimensions. In this situation, it is extremely important to adjust the gap between the jaws of the locking tool to 2 ~
accommodate the dimensions of a new pair of elements as soon as possible.
A known type of prior art device makes such adjustment of a gap between the jaws by means of rotation of a single threaded, single pitch adjustment screw to which the movable jaw is connected directly or indirectly. This method and means of adjustment are necessarily slow and time consuming and result in loss of valuable time in adjusting the tools from one size to another.
8rief DescriPtion of The drawinqs Other advantages and features of the invention are described with reference to exemplary embodiments, which are intended to explain and not to limit the invention, and are illustrated in the drawings in which:
Fig. 1 is a side view of long-nose pliers utilizing the invention.
Fig. 2 is a side, partial cross-section view of pliers having curved jaws and utilizing the invention.
Fig. 3 is a partially, enlarged view of a threaded arrangement shown in Figs. 1 and 2.
Fig. 4 is an end view of a screw member.
Fig. 5 is a partial cross-section view of threads of the screw member.
Fig. 6 shows a partial view of a toggle-locking C-clamp.
Fig. 7 is a perspective view of a locking chain clamp.
Fig. 8 is a perspective view of a locking welding clamp.
Fig. 9 is a perspective view of a sheet metal tool.
DescriPtion Of The Preferred Embodiment Although a specific embodiment of the invention will now be described with reference to the drawings, it should be understood that the embodiment shown is by way of example only and merely illustrative of but one of the many possible specific embodiments which can represent applications of the principles of the invention. Various changes and modifications, obvious to one skilled in the art to which the invention pertains, are deemed to be within the spirit, scope and contemplation of the invention as further defined in the appended claims.
As best shown in Fig. 1, the long-nose locking pliers is generally designated by the reference numeral 10, and includes a handle member 12, and a movable clamping member or lower jaw 14.
The handle member 12 is provided with a stationary clamping element or upper jaw 16. A toggle mechanism comprises an elongated handle member 18 and a toggle-link member 20 which is conventionally pivotally engaged at one end about the pin 22. The other free end (shown in phantom) of the toggle link member 20 is engaged with the handle member 12, and in particular the abutment end (also shown in phantom) of an adjustment screw member 24 which is suitably threadably engaged at the end of the handle member 12. Operation of the screw member will be discussed in full detail later in this application. The forward end of the handle member 18 is preferably bifurcated or forked, and a corner portion of the movable clamping member 14 is suitably disposed within the fork or between the bifurcation arms by pivot pin means 19. Similarly, the hand,e member 12 is preferably channel-shaped, and receives another corner portion of the movable clamping elemeni 14 which is also suitably secured thereto by means of a pivot pin 17.
Spring means 25, preferably in the form of an extension coil spring, is secured between the handle member 12 and the movable clamping element 14 or lower jaw, to urge the clamping element 14 away from the stationary clamping element when the jaws are opened.
An elongated release lever 28 is suitably pivotally mounted by means of a pin 30, to the inside of the handle member 18, and is provided with a forwardly extending portion (as shown in phantom) and is engageable with a projection 32 of the toggle-like ~ember 20 which extends toward the handle member 18. When the release lever 28 is pivoted about the pin 30, the handle member 12 is moved away from the handle member 18.
It will be appreciated that the wrench or locking pliers Dechanism and toggle construction described herein, with some exceptions, conforms basically in accordance with the construction described in U.S. Patent No. 1,489,458. Furthermore, such construction, the operation thereof, and the specific operation of the release lever is clearly set forth in U.S. Patent No.
3,192,804. As explained in these Petersen prior art patents, closing of a locking wrench or pliers incorporating a toggle device is effected by moving the relatively movable handle member 18 toward the relatively fixed handle member 12. This movement forces the upper end of the toggle-like member 20 to move inwardly towards the handle member 12. The pivot pin 22 also moves inwardly, and when such pivot pin moves over center, the pliers is locked in a closed position.
A tool of a further embodiment of the invention is best illustrated in Fig. 2 and includes a fixed arm 15 having a fixed handle 12 at one end and a fixed jaw 16 at the other end. A
movable jaw 14 is pivotally attached to a movable handle member 18.
The jaws 14 and 16, shown in Fig. 2, are curved and bulky. A
toggle-link member 20 is pivotally engaged with the movable handle.
The other free end 44 of the toggle-link engages with a contacting part of a screw member 24. The fixed handle is suitably formed as a U-shaped channel. The end of the fixed handle 30, remote from the fixed jaw 16, is completed with a receiving portion 32 having front 34 and rear 36 parts. A threaded opening 38 extends through the receiving portion from the part 34 to part 36. A screw member 24 is provided for threadable engagement with the threaded opening.
The screw terminates in a knurled adjusting knob 40 at one end and the contacting part 42 at the other end.
When the screw member 24 is turned at the knob by the user, its rotation within the threaded opening results in advancement of the screw in the axial direction. Such advancement in the direction of the fixed jaw 16 presses the contacting part 42 against the toggle-link 20 and changes the distance between the end o~ the toggle link 44 from the pivot point 17 of the movable jaw 16, whereby the distance between the stationary jaw 16 and the movable jaw 14 is adjusted to grip objects of different dimensions without exerting excessive force.
The screw member 24 and the threaded opening 38 are illustrated in better detail in Fig. 3. A combined threaded part 44 of the screw member consists of two individual, separate and coaxial threads 46 and 48 extending along a longitudinal axis A-A.
However, the screw member having any reasonable number of individual threads is within the scope of the invention.
Since the pitches of the threads 46 and 48 shown in Figs. 3-are identical, the distance between corresponding points on adjacent turns of the thread 46 is equal to the distance between corresponding points on adjacent turns of the thread 48.
Fig. 5 further illustrates that the crest and root diameters of both threads are essentially the same.
To provide adequate threadable engagement between the screw member 24 and the opening 38, the latter has a combined internal thread consisting of two individual, separate and coaxial threads 50 and 52 adapted to threadably engage with the threads 46 and 48 of the screw member. The internal individual threads 50 and 52 extend through the length of the opening 38 from the front part of the receiving portion 34 to the rear part 36.
In the preferred embodiment of the invention illustrated in Fig. 4, two different starting points 54 and 56, at a specific angle apart, are provided for the individual threads of the screw ~l3~ z~l~
member. This is also applicable to the threaded opening. Although such angle between two starting points could be of any reasonable value, Fig. 4 illustrating an end vi~ew of the screw member of the preferred embodiment shows such angle equal 180.
If the screw member is provided with three individual threads the angle between adjacent starting points could be 120.
In order to prevent false starts when turning the screw member into the threaded opening, an alternative embodi~ent (not shown on the drawings) having a single initial or run-on turn is contemplated by the invention. Thus, one thread of the screw member makes initial mating engagement witn the corresponding thread of the threaded opening at the beginning of the initial or run-on thread turn of the threaded engagement. Similarly, the second thread of the screw member makes initial mating engagement with the corresponding thread on the threaded opening at the beginning of the same initial or run-on turn. Therefore, only one starting point for two threads is provided in such alternative embodiment.
The threads of the invention could be metric as well as U.S.
Standard threads.
When a single threaded engagement between the screw member and the threaded opening is used, as disclosed by the prior art, the distance which the screw advances axially on one turn of the Xnob is equal to the pitch of the single thread. On the contrary, if the multiple threaded screw is used, as provided by the invention, the axial advancement of the screw on one turn of the knob is equal ~ J
to a combined pitch of all individual threads used. The screw member 24 has two individual threads 46 and 48 having corresponding pitches P1 and P2. When the user rotates the knob 40 one full turn, the advancement of the screw in the axial direction is equal to a combined pitch P1 and P2. Such double advancement by the screw acting on the toggle link substantially increases the rate of adjustment of the movable jaw relative to the stationary jaw.
Fig. 6 illustrates the arms of a toggle-locking C-clamp wherein a fixed clamp member 51 is shown cooperating with a movable clamp member 52, which pivots about the pin 53.
Fig. 7 shows a locking chain clamp, Fig. 8 shows a locking welding ehain and Fig. 9 illustrates a conventional sheet metal tool. All tools are well-known in the art and are incorporated by reference.
The above-described arrangements for increasing the rate of adjustment of the movable jaws or similar movable part can be applied to the tools shown in Figs. 6-9.
The adjustment screw arrangement described hereinabove is also applicable for Stilson wrenches, bench vises and other types of tools.
A tool of a further embodiment of the invention is best illustrated in Fig. 2 and includes a fixed arm 15 having a fixed handle 12 at one end and a fixed jaw 16 at the other end. A
movable jaw 14 is pivotally attached to a movable handle member 18.
The jaws 14 and 16, shown in Fig. 2, are curved and bulky. A
toggle-link member 20 is pivotally engaged with the movable handle.
The other free end 44 of the toggle-link engages with a contacting part of a screw member 24. The fixed handle is suitably formed as a U-shaped channel. The end of the fixed handle 30, remote from the fixed jaw 16, is completed with a receiving portion 32 having front 34 and rear 36 parts. A threaded opening 38 extends through the receiving portion from the part 34 to part 36. A screw member 24 is provided for threadable engagement with the threaded opening.
The screw terminates in a knurled adjusting knob 40 at one end and the contacting part 42 at the other end.
When the screw member 24 is turned at the knob by the user, its rotation within the threaded opening results in advancement of the screw in the axial direction. Such advancement in the direction of the fixed jaw 16 presses the contacting part 42 against the toggle-link 20 and changes the distance between the end o~ the toggle link 44 from the pivot point 17 of the movable jaw 16, whereby the distance between the stationary jaw 16 and the movable jaw 14 is adjusted to grip objects of different dimensions without exerting excessive force.
The screw member 24 and the threaded opening 38 are illustrated in better detail in Fig. 3. A combined threaded part 44 of the screw member consists of two individual, separate and coaxial threads 46 and 48 extending along a longitudinal axis A-A.
However, the screw member having any reasonable number of individual threads is within the scope of the invention.
Since the pitches of the threads 46 and 48 shown in Figs. 3-are identical, the distance between corresponding points on adjacent turns of the thread 46 is equal to the distance between corresponding points on adjacent turns of the thread 48.
Fig. 5 further illustrates that the crest and root diameters of both threads are essentially the same.
To provide adequate threadable engagement between the screw member 24 and the opening 38, the latter has a combined internal thread consisting of two individual, separate and coaxial threads 50 and 52 adapted to threadably engage with the threads 46 and 48 of the screw member. The internal individual threads 50 and 52 extend through the length of the opening 38 from the front part of the receiving portion 34 to the rear part 36.
In the preferred embodiment of the invention illustrated in Fig. 4, two different starting points 54 and 56, at a specific angle apart, are provided for the individual threads of the screw ~l3~ z~l~
member. This is also applicable to the threaded opening. Although such angle between two starting points could be of any reasonable value, Fig. 4 illustrating an end vi~ew of the screw member of the preferred embodiment shows such angle equal 180.
If the screw member is provided with three individual threads the angle between adjacent starting points could be 120.
In order to prevent false starts when turning the screw member into the threaded opening, an alternative embodi~ent (not shown on the drawings) having a single initial or run-on turn is contemplated by the invention. Thus, one thread of the screw member makes initial mating engagement witn the corresponding thread of the threaded opening at the beginning of the initial or run-on thread turn of the threaded engagement. Similarly, the second thread of the screw member makes initial mating engagement with the corresponding thread on the threaded opening at the beginning of the same initial or run-on turn. Therefore, only one starting point for two threads is provided in such alternative embodiment.
The threads of the invention could be metric as well as U.S.
Standard threads.
When a single threaded engagement between the screw member and the threaded opening is used, as disclosed by the prior art, the distance which the screw advances axially on one turn of the Xnob is equal to the pitch of the single thread. On the contrary, if the multiple threaded screw is used, as provided by the invention, the axial advancement of the screw on one turn of the knob is equal ~ J
to a combined pitch of all individual threads used. The screw member 24 has two individual threads 46 and 48 having corresponding pitches P1 and P2. When the user rotates the knob 40 one full turn, the advancement of the screw in the axial direction is equal to a combined pitch P1 and P2. Such double advancement by the screw acting on the toggle link substantially increases the rate of adjustment of the movable jaw relative to the stationary jaw.
Fig. 6 illustrates the arms of a toggle-locking C-clamp wherein a fixed clamp member 51 is shown cooperating with a movable clamp member 52, which pivots about the pin 53.
Fig. 7 shows a locking chain clamp, Fig. 8 shows a locking welding ehain and Fig. 9 illustrates a conventional sheet metal tool. All tools are well-known in the art and are incorporated by reference.
The above-described arrangements for increasing the rate of adjustment of the movable jaws or similar movable part can be applied to the tools shown in Figs. 6-9.
The adjustment screw arrangement described hereinabove is also applicable for Stilson wrenches, bench vises and other types of tools.
Claims (25)
- Claim 1. A hand tool, comprising a fixed jaw and a movable jaw, a fixed handle having a receiving portion, a screw member engaging with the receiving portion, jaw adjusting means for internal cooperation between the jaws and for adjusting position of said movable jaw relative to said stationary jaw;
said screw member having a plurality of first individual and separate threads extending along a longitudinal axis thereof;
said receiving portion defined by a threaded opening situated within the fixed handle, said threaded opening having a plurality of second individual and separate threads adapted for threadable engagement with said plurality of the first threads of the screw member;
whereby increased rate of advancement of the screw member in the axial direction resulted from rotational engagement of the plurality of said first threads of the screw and the plurality of said second threads of the threaded opening and acting on said jaw adjusting means substantially increases the rate of adjustment of the movable jaw relative to the stationary jaw. - Claim 2. The hand tool as claimed in claim 1, wherein said plurality of said first and second individual and separate threads of said screw member and said threaded opening are two of said first and two of said second threads.
- Claim 3. The hand tool as claimed in claim 2, wherein said two first and two second threads have identical pitches.
- Claim 4. The hand tool as claimed in claim 2, wherein said threads are U.S. standard threads.
- Claim 5. The hand tool as claimed in claim 2, wherein said threads are metric standard threads.
- Claim 6. The hand tool as claimed in claim 3, wherein one turn rotation of said screw within said threaded opening results in the advancement of the screw in the axial direction substantially equal to a combined pitch of said threads.
- Claim 7. The hand tool as claimed in claim 2, wherein starting points of said threads on the screw and the threaded opening are positioned at an angle to each other.
- Claim 8. The hand tool as claimed in claim 7, wherein said angle is 180°.
- Claim 9. The hand tool as claimed in claim 7, wherein said starting points are situated within the same plane and which is positioned substantially perpendicular to the longitudinal axis of the screw.
- Claim 10. The hand tool of claim 3, wherein said pitches are U.S.
standard pitch 14. - Claim 11. The hand tool as claimed in claim 2, wherein each said thread is U.S. standard thread 5/16-18 UNC-2A.
- Claim 12. The hand tool as claimed in claim 1, wherein said plurality of second individual and separated threads extend through the entire length of the threaded opening.
- Claim 13. A locking hand tool, comprising a fixed handle having front and rear portions, a fixed jaw connected to said front portion, a receiving part positioned at said rear portion;
a movable jaw pivotally connected to said front portion of the fixed handle for cooperation with the stationary jaw, a movable handle connected to the movable jaw;
toggle means defined by at least a toggle member having first and second ends, said first end of the toggle link being pivotally secured to said movable handle, adjusting means for adjusting position of the movable jaw relative to said stationary jaw, said adjusting means comprising a threaded opening positioned within said receiving part of said fixed handle, and a screw member having one end thereof adapted to contact said second end of the toggle member, said screw member having a plurality of first individual and separate threads extending along a longitudinal axis thereof, said threaded opening having a plurality of second individual and separate threads adapted for threadable engagement with said plurality of first threads of the screw member, whereby increased rate of advancement of the screw member in the axial direction resulted from rotational engagement of the plurality of first threads of the screw member with the plurality of second threads of the threaded opening and acting on said movable jaw through said toggle member and toggle means substantially increases the rate of adjustment of said movable jaw relative to said stationary jaw. - Claim 14. The hand tool as claimed in claim 13, wherein said plurality of said first and second individual and separate threads of said screw member and said threaded opening are two of said first and two of said second threads.
- Claim 15. The hand tool as claimed in claim 14, wherein said two first and two second threads have identical pitches.
- Claim 16. The hand tool as claimed in claim 15, wherein said threads are U.S. standard threads.
- Claim 17. The hand tool as claimed in claim 14, wherein said threads are metric standard threads.
- Claim 18. The hand tool as claimed in claim 15, wherein one turn rotation of said screw within said threaded opening results in the advancement of the screw in the axial direction substantially equal to a combined pitch of said threads.
- Claim 19. The hand tool as claimed in claim 14, wherein starting points of said threads on the screw and the threaded opening are positioned at an angle to each other.
- Claim 20. The hand tool as claimed n claim 19, wherein said angle is 180°.
- Claim 21. The hand tool as claimed in claim 19, wherein said starting points are situated within the same plane which is positioned substantially perpendicular to the longitudinal axis of the screw.
- Claim 22. The hand tool as claimed in claim 15, wherein said pitches are U.S. Standard pitch 14.
- Claim 23. The hand tool as claimed in claim 14, wherein each said thread is U.S. Standard thread 5/16-18 UNC-2A.
- Claim 24. The hand tool as claimed in claim 13, wherein said plurality of second individual and separate threads extend through the entire length of the threaded opening.
- Claim 25. An adjusment screw for tools and the like, comprising an elongated metal body, a plurality of individual, separate and coaxial threads extending along a longitudinal axis of the body.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US39270789A | 1989-08-11 | 1989-08-11 | |
| US392,707 | 1989-08-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2022519A1 true CA2022519A1 (en) | 1991-02-12 |
Family
ID=23551690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002022519A Abandoned CA2022519A1 (en) | 1989-08-11 | 1990-07-30 | Rapid jaw adjustment for tools and the like |
Country Status (16)
| Country | Link |
|---|---|
| JP (1) | JPH0398771A (en) |
| KR (1) | KR910004310A (en) |
| CN (1) | CN1049306A (en) |
| AU (1) | AU645499B2 (en) |
| BE (1) | BE1003467A4 (en) |
| BR (1) | BR9003958A (en) |
| CA (1) | CA2022519A1 (en) |
| DE (1) | DE4024999A1 (en) |
| DK (1) | DK176990A (en) |
| FR (1) | FR2650774A1 (en) |
| GB (1) | GB2234701B (en) |
| HK (1) | HK25394A (en) |
| IE (1) | IE902742A1 (en) |
| IT (1) | IT1246418B (en) |
| NL (1) | NL9001789A (en) |
| SE (1) | SE9002366L (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW267126B (en) * | 1993-02-04 | 1996-01-01 | Petersen Mfg Co Ltd | |
| US5435214A (en) * | 1993-11-02 | 1995-07-25 | Sisson; Clarence E. | Adjustable locking plier |
| DE102009058486B4 (en) * | 2009-12-16 | 2012-01-05 | Audi Ag | Lochzange |
| CN105269477A (en) * | 2014-07-24 | 2016-01-27 | 吴明杰 | Clamping device capable of rapidly adjusting clamping force |
| EP2982477A1 (en) * | 2014-08-07 | 2016-02-10 | Ming-Chieh Wu | Gripping tool with adjustor allowing quick adjustments of clamping pressure modes |
| WO2017218340A1 (en) * | 2016-06-13 | 2017-12-21 | Fiskars Brands, Inc. | Multi-function fishing tool |
| CN108928174B (en) * | 2017-05-23 | 2024-01-12 | 深圳市威雄精机有限公司 | Tool bar spanner of ultrasonic engraving machine |
| WO2019051491A1 (en) | 2017-09-11 | 2019-03-14 | Milwaukee Electric Tool Corporation | Locking pliers with movable torque-increasing jaw section |
| EP3766147A4 (en) * | 2018-03-15 | 2022-03-16 | Oetiker Tool Corporation | Crimping tool |
| USD910395S1 (en) | 2019-03-11 | 2021-02-16 | Milwaukee Electric Tool Corporation | Pliers |
| CN111917056B (en) * | 2020-08-18 | 2022-05-17 | 广东电网有限责任公司 | Auxiliary tool for dismounting and mounting shaft pin of conductor spacer wire clamp |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1489458A (en) * | 1923-01-05 | 1924-04-08 | Jules A Sire | Wrench |
| DE951788C (en) * | 1954-12-07 | 1956-10-31 | Voigtlaender Ag | Threads, in particular setting and measuring threads |
| US3192804A (en) * | 1962-09-20 | 1965-07-06 | Petersen Mfg | Chain clamps |
| GB1233175A (en) * | 1967-07-10 | 1971-05-26 | ||
| US3590669A (en) * | 1968-01-30 | 1971-07-06 | Vincent Marasco | Pliers with adjustable toggle lock |
| GB1514569A (en) * | 1976-09-12 | 1978-06-14 | Eccleston H | G-clamps |
-
1990
- 1990-07-05 SE SE9002366A patent/SE9002366L/en not_active Application Discontinuation
- 1990-07-12 GB GB9015370A patent/GB2234701B/en not_active Expired - Fee Related
- 1990-07-23 AU AU59179/90A patent/AU645499B2/en not_active Ceased
- 1990-07-25 DK DK176990A patent/DK176990A/en not_active Application Discontinuation
- 1990-07-27 BE BE9000749A patent/BE1003467A4/en not_active IP Right Cessation
- 1990-07-27 KR KR1019900011435A patent/KR910004310A/en not_active Application Discontinuation
- 1990-07-30 IE IE274290A patent/IE902742A1/en unknown
- 1990-07-30 CA CA002022519A patent/CA2022519A1/en not_active Abandoned
- 1990-08-01 IT IT02116690A patent/IT1246418B/en active IP Right Grant
- 1990-08-02 CN CN90106542A patent/CN1049306A/en active Pending
- 1990-08-03 FR FR9009973A patent/FR2650774A1/en not_active Withdrawn
- 1990-08-07 DE DE4024999A patent/DE4024999A1/en not_active Withdrawn
- 1990-08-08 NL NL9001789A patent/NL9001789A/en not_active Application Discontinuation
- 1990-08-09 JP JP2213559A patent/JPH0398771A/en active Pending
- 1990-08-10 BR BR909003958A patent/BR9003958A/en not_active Application Discontinuation
-
1994
- 1994-03-24 HK HK253/94A patent/HK25394A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL9001789A (en) | 1991-03-01 |
| DE4024999A1 (en) | 1991-02-14 |
| CN1049306A (en) | 1991-02-20 |
| SE9002366D0 (en) | 1990-07-05 |
| BR9003958A (en) | 1991-09-03 |
| DK176990D0 (en) | 1990-07-25 |
| GB2234701A (en) | 1991-02-13 |
| GB9015370D0 (en) | 1990-08-29 |
| BE1003467A4 (en) | 1992-03-31 |
| IT1246418B (en) | 1994-11-18 |
| FR2650774A1 (en) | 1991-02-15 |
| KR910004310A (en) | 1991-03-28 |
| JPH0398771A (en) | 1991-04-24 |
| HK25394A (en) | 1994-03-31 |
| AU645499B2 (en) | 1994-01-20 |
| IT9021166A0 (en) | 1990-08-01 |
| AU5917990A (en) | 1991-02-14 |
| GB2234701B (en) | 1993-06-16 |
| SE9002366L (en) | 1991-02-12 |
| IT9021166A1 (en) | 1992-02-01 |
| DK176990A (en) | 1991-02-12 |
| IE902742A1 (en) | 1991-02-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2149428B1 (en) | Locking pliers | |
| US5056385A (en) | Compound toggle link | |
| US6131491A (en) | Self-locking chuck key | |
| US7861622B2 (en) | Locking pliers | |
| AU628717B2 (en) | Hand tool or improved bar clamp | |
| US20080282851A1 (en) | Locking pliers | |
| US5267464A (en) | Pipe ring crimping tool | |
| US5435214A (en) | Adjustable locking plier | |
| US5941142A (en) | Ratcheting adjustable jaw wrench and method of use | |
| US6694841B2 (en) | Self adjusting mechanism for locking plier, wrench, or other tool | |
| IE892111L (en) | Quick-action clamp | |
| US5377567A (en) | Bicycle tool | |
| WO2019051491A1 (en) | Locking pliers with movable torque-increasing jaw section | |
| CA2022519A1 (en) | Rapid jaw adjustment for tools and the like | |
| US5499800A (en) | Adjustable toggle action quick release locking bar clamp | |
| US5094132A (en) | Adjustable hand wrench | |
| EP0595978B1 (en) | Self-locking hand tools | |
| US5203797A (en) | Rapid jaw adjustment for tools and the like | |
| US7437978B1 (en) | Self-adjusting locking vise grip | |
| US20010054335A1 (en) | Self-adjusting vise-grip wrench | |
| US5138912A (en) | Locking pipe wrench | |
| US4438668A (en) | Wrench | |
| GB2186221A (en) | Improvements relating to adjustable spanners |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |