US2144180A - Pliers - Google Patents
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- Publication number
- US2144180A US2144180A US179419A US17941937A US2144180A US 2144180 A US2144180 A US 2144180A US 179419 A US179419 A US 179419A US 17941937 A US17941937 A US 17941937A US 2144180 A US2144180 A US 2144180A
- Authority
- US
- United States
- Prior art keywords
- pin
- jaw
- handles
- lug
- handle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- 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
- B25B7/02—Jaws
-
- 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
- B25B7/06—Joints
- B25B7/10—Joints with adjustable fulcrum
-
- 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
Definitions
- My invention relates to improvements in pliers of the adjustable type, the objects of which are to provide means for securing the pivot pin con necting the plier jaws in adjusted position by applying closing pressure upon the plier handles, and to provide means whereby the pliers can be adjusted for jaw opening by exerting thumb pressure upon one part when holding the plier handles in one hand.
- the invention consists essentially of a plier having jaws and handles, which jaws are pivotally connected by a pin held in one jaw and engaging one of a plurality of notches formed in a slotted portion of the opposite jaw, said pin being connected by pairs of links extending from one of the handles, as will be more fully described in the following specification and shown in the accompanying drawing, in which:
- Fig. 1 is a general view of the pliers closed, with the bar link in section.
- Fig. 2 is a general view of the pliers in extended position.
- the numeral I indicates a handle which is formed integrally with a jaw 2 and an inwardly projecting lug 3.
- the lug is provided with a slot 4 having a plurality of notches 5 on its lower side, each of which is adapted to selectively receive a pivot pin 6 extending through the lug l of a jaw 8.
- the lower extremity of the jaw 8 is pivotally connected by a pin 9 to a second handle II].
- a bar link I I formed with two side members I2 connected together intermediate their length with a bar I3, which, when squeezing pressure is applied to the handles I and III is adapted to bear upon the underside of the lug 3.
- the lower end of the bar link I I is connected to the handle III by a link I4 which is pivoted at its outer end to the handle II] by a pin I5 and is pivoted at its inner end to the bar link I I by a pin I6.
- I may use a light spring H, see Figure 1, anchored to each of the links II and I4, which will tend to swing the lower end of the bar link I I towards the handle I.
- the tool In use, the tool is set to engage a nut or other article to be gripped by holding both handles I and I0 with one hand, if desired and thumb pressure in an upward direction is applied to the intersection of the links II and I4, which releases the pin 6 from its set position in one of the notches 5 of the slot 4, thus allowing the lug 3 to be moved freely in or out until the desired jaw opening is attained.
- thumb pressure in an upward direction is applied to the intersection of the links II and I4 which releases the pin 6 from its set position in one of the notches 5 of the slot 4, thus allowing the lug 3 to be moved freely in or out until the desired jaw opening is attained.
- thumb pressure in an upward direction is applied to the intersection of the links II and I4 which releases the pin 6 from its set position in one of the notches 5 of the slot 4, thus allowing the lug 3 to be moved freely in or out until the desired jaw opening is attained.
- a plier comprising a pair of jaws and a pair of handles, one of said jaws being formed integrally with one handle and the second jaw being hingedly connected with the second handle, a lug extending inwardly from each jaw, one lug having a slot provided with notches and the second jaw having a pin passing through said slot and adapted to rest in any of said notches, a bar link connected at one end to the pin and a link connected to. the hingedly connected handle and to the bar link, said bar link having a transverse bar adapted to engage the underside of the slotted lug when closing force is applied to the handles.
- a plier comprising a pair of jaws and a pair of handles, one of said jaws being formed inte- I;
- each jaw grally with one handle and the second jaw being hingedly connected with the second handle, a lug extending inwardly from. each jaw, one lug having a slot provided with notches and the second jaw having a pin passing through said slot and adapted to rest in any of said notches, a bar link connected at one end to the pin and a link connected to the hingedly connected handle and
Description
' Jan. 17, 1939. A? CRUICKSHANK PLIERS Filed Dc. 13, 1957 INVENTOR.
ALEXANDER. Ck'ulcKsImA/K ATTORNEY- Patented Jan. 17, 1939 PATENT OFFICE PLIERS Alexander Cruickshank, Clayburn, British Columbia, Canada Application December 13, 1937, Serial No. 179,419
2 Claims.
My invention relates to improvements in pliers of the adjustable type, the objects of which are to provide means for securing the pivot pin con necting the plier jaws in adjusted position by applying closing pressure upon the plier handles, and to provide means whereby the pliers can be adjusted for jaw opening by exerting thumb pressure upon one part when holding the plier handles in one hand. The invention consists essentially of a plier having jaws and handles, which jaws are pivotally connected by a pin held in one jaw and engaging one of a plurality of notches formed in a slotted portion of the opposite jaw, said pin being connected by pairs of links extending from one of the handles, as will be more fully described in the following specification and shown in the accompanying drawing, in which:
Fig. 1 is a general view of the pliers closed, with the bar link in section.
Fig. 2 is a general view of the pliers in extended position.
In the drawing like characters of reference indicate corresponding parts in each figure.
The numeral I indicates a handle which is formed integrally with a jaw 2 and an inwardly projecting lug 3. The lug is provided with a slot 4 having a plurality of notches 5 on its lower side, each of which is adapted to selectively receive a pivot pin 6 extending through the lug l of a jaw 8. The lower extremity of the jaw 8 is pivotally connected by a pin 9 to a second handle II]. Secured to opposite ends of the pivot pin 6 is a bar link I I formed with two side members I2 connected together intermediate their length with a bar I3, which, when squeezing pressure is applied to the handles I and III is adapted to bear upon the underside of the lug 3.
The lower end of the bar link I I is connected to the handle III by a link I4 which is pivoted at its outer end to the handle II] by a pin I5 and is pivoted at its inner end to the bar link I I by a pin I6.
As a means of ensuringengagement between the underside of the jaw lug 3 and the bar I3, I may use a light spring H, see Figure 1, anchored to each of the links II and I4, which will tend to swing the lower end of the bar link I I towards the handle I.
In use, the tool is set to engage a nut or other article to be gripped by holding both handles I and I0 with one hand, if desired and thumb pressure in an upward direction is applied to the intersection of the links II and I4, which releases the pin 6 from its set position in one of the notches 5 of the slot 4, thus allowing the lug 3 to be moved freely in or out until the desired jaw opening is attained. When this is done it suffices to apply the jaws 2 and 8 to the article to be turned or gripped and to squeeze the handles I and I0 together. The force applied to the handles after the jaws have closed upon the article to be gripped, forces the bar I3 into firm contact with the underside of the lug 3, thus locking the pivot pin 6 in place in its notch 5 and transfers the fulcrum between the handles to the pin IE, the link I4 and the pin 15. Final squeezing pressure of the handles will cause the jaw B to rock inwardly on the pin 6 in response to outward thrust at the pin 9 from the movement of the upper end of the handle I0.
What I claim as my invention is:
l. A plier comprising a pair of jaws and a pair of handles, one of said jaws being formed integrally with one handle and the second jaw being hingedly connected with the second handle, a lug extending inwardly from each jaw, one lug having a slot provided with notches and the second jaw having a pin passing through said slot and adapted to rest in any of said notches, a bar link connected at one end to the pin and a link connected to. the hingedly connected handle and to the bar link, said bar link having a transverse bar adapted to engage the underside of the slotted lug when closing force is applied to the handles.
2. A plier comprising a pair of jaws and a pair of handles, one of said jaws being formed inte- I;
grally with one handle and the second jaw being hingedly connected with the second handle, a lug extending inwardly from. each jaw, one lug having a slot provided with notches and the second jaw having a pin passing through said slot and adapted to rest in any of said notches, a bar link connected at one end to the pin and a link connected to the hingedly connected handle and
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US179419A US2144180A (en) | 1937-12-13 | 1937-12-13 | Pliers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US179419A US2144180A (en) | 1937-12-13 | 1937-12-13 | Pliers |
Publications (1)
Publication Number | Publication Date |
---|---|
US2144180A true US2144180A (en) | 1939-01-17 |
Family
ID=22656517
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US179419A Expired - Lifetime US2144180A (en) | 1937-12-13 | 1937-12-13 | Pliers |
Country Status (1)
Country | Link |
---|---|
US (1) | US2144180A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2464145A (en) * | 1944-09-29 | 1949-03-08 | Lawrence C Mead | Pliers |
US5850768A (en) * | 1995-09-07 | 1998-12-22 | Chow; Jessie | Pliers for gripping workpieces of different sizes |
US5950314A (en) * | 1997-08-05 | 1999-09-14 | Chang; Jung-Hsien | Step-separating shearing tool |
EP0967051A1 (en) * | 1998-06-25 | 1999-12-29 | Olympia Industrial, Inc. | Auto-adjusting pliers |
US6178855B1 (en) | 1998-07-01 | 2001-01-30 | B!G Ventures, L.L.C. | Self-adjusting and/or self-locking pliers |
US6227081B1 (en) | 1999-08-13 | 2001-05-08 | B!G Ventures, L.L.C. | Pliers with force augmentation and self-adjustment capability |
US6378404B1 (en) | 1998-07-01 | 2002-04-30 | Big Ventures, L.L.C. | Self-adjusting and/or self-locking pliers |
US6408725B1 (en) * | 2001-04-20 | 2002-06-25 | Paul M. Janson | Pliers |
US20060272458A1 (en) * | 2004-09-27 | 2006-12-07 | Kelly Ara D | Self-locking auto-adjust pliers |
EP1987922A2 (en) * | 2007-05-03 | 2008-11-05 | Simes-Senco, S.A. | Ring-forming tool with variable lever arm and variable torque |
-
1937
- 1937-12-13 US US179419A patent/US2144180A/en not_active Expired - Lifetime
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2464145A (en) * | 1944-09-29 | 1949-03-08 | Lawrence C Mead | Pliers |
US5850768A (en) * | 1995-09-07 | 1998-12-22 | Chow; Jessie | Pliers for gripping workpieces of different sizes |
US5950314A (en) * | 1997-08-05 | 1999-09-14 | Chang; Jung-Hsien | Step-separating shearing tool |
EP0967051A1 (en) * | 1998-06-25 | 1999-12-29 | Olympia Industrial, Inc. | Auto-adjusting pliers |
US6178855B1 (en) | 1998-07-01 | 2001-01-30 | B!G Ventures, L.L.C. | Self-adjusting and/or self-locking pliers |
US6378404B1 (en) | 1998-07-01 | 2002-04-30 | Big Ventures, L.L.C. | Self-adjusting and/or self-locking pliers |
US6227081B1 (en) | 1999-08-13 | 2001-05-08 | B!G Ventures, L.L.C. | Pliers with force augmentation and self-adjustment capability |
US6408725B1 (en) * | 2001-04-20 | 2002-06-25 | Paul M. Janson | Pliers |
US20060272458A1 (en) * | 2004-09-27 | 2006-12-07 | Kelly Ara D | Self-locking auto-adjust pliers |
EP1987922A2 (en) * | 2007-05-03 | 2008-11-05 | Simes-Senco, S.A. | Ring-forming tool with variable lever arm and variable torque |
EP1987922A3 (en) * | 2007-05-03 | 2010-10-20 | Simes-Senco, S.A. | Ring-forming tool with variable lever arm and variable torque |
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