US2895365A - Jaw face construction for pipe wrenches - Google Patents
Jaw face construction for pipe wrenches Download PDFInfo
- Publication number
- US2895365A US2895365A US691594A US69159457A US2895365A US 2895365 A US2895365 A US 2895365A US 691594 A US691594 A US 691594A US 69159457 A US69159457 A US 69159457A US 2895365 A US2895365 A US 2895365A
- Authority
- US
- United States
- Prior art keywords
- wrench
- jaw
- openings
- jaws
- pipe
- 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
Links
- 238000010276 construction Methods 0.000 title description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Images
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
- B25B13/00—Spanners; Wrenches
- B25B13/48—Spanners; Wrenches for special purposes
- B25B13/50—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes
- B25B13/5008—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes for operating on pipes or cylindrical objects
- B25B13/5016—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes for operating on pipes or cylindrical objects by externally gripping the pipe
- B25B13/5025—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes for operating on pipes or cylindrical objects by externally gripping the pipe using a pipe wrench type tool
- B25B13/5041—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes for operating on pipes or cylindrical objects by externally gripping the pipe using a pipe wrench type tool with movable or adjustable jaws
- B25B13/5058—Linearly moving or adjustable, e.g. with an additional small tilting or rocking movement
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/748—With work immobilizer
- Y10T83/7487—Means to clamp work
- Y10T83/7573—Including clamping face of specific structure
Definitions
- This invention relates to wrenches, and particularly to pipe wrenches or the like wherein the jaws are designed to exert a firm grip on a cylindrical or similar object.
- Pipe and similar wrenches are conventionally formed with jaws having transverse serrations or grooves defining sharp-crested ridges or ribs for the purpose of biting into and firmly gripping a workpiece.
- the grooves between the ridges often become filled with oil or grease and similar foreign matter usually mixed with dirt or dust and scale from the work pieces to such an extent that the grooves become completely filled with the foreign matter. That foreign matter soon becomes tightly compacted within the grooves to such an extent that it prevents the sharp crests from effectively biting into the work piece with consequent slipping and premature dulling of the sharp crests.
- the gripping edges of such a wrench are formed as peripheral or boundary edges of openings extending into the respective wrench jaws and communicating with the exterior of the jaw at a point remote from the gripping elements.
- Fig. 1 is a side elevational view of a pipe wrench embodying the present invention
- Fig. 2 is an enlarged sectional view taken substantially along the line 2-2 of Fig. 1, looking in the direction of the arrows;
- Fig. 3 is a further enlarged fragmentary sectional view taken along the line 3-3 of Fig. 2.
- the pipe wrench illustrated in the drawings comprises a more or less conventional pipe wrench structure having a handle 2 provided with an integral lateral projection 4 having a longitudinal opening 6 therethrough generally parallel to handle 2.
- a transverse opening 8, through projection 4, rotatably receives an internally threaded cylindrical nut 10 and retains the same against axial movement.
- An end of the handle 2 adjacent the projection 4 is provided with a groove 12 removably receiving a rib 14 extending downwardly from a removable jaw 16.
- the jaw 16 is held in assembled relation to the Wrench handle by means of a transverse pin 18, as is well known in the art.
- a movable jaw 20 is provided with a transversely flattened spanner shank 22 loosely slidable in the opening 6 of the projection 4.
- the shank 22 is further provided with thread portions 24 on opposed edges thereof, engageable with the internal threads of nut 10.
- rotation of the nut 10 effects movement of the jaw 20 to regulate the spacing thereof with respect to the jaw 16 to accommodate work pieces of different sizes.
- the jaws 16 and 20 are provided with opposed faces 26 and 28, respectively.
- the faces 26 and 28 are, in turn, provided with spaced protuberances 30 extending outwardly from their respective faces and tapering toward their outer ends.
- the jaws are provided with openings 32 (see also Fig. 2) extending through the outer ends of the protuberances and bounded by sharp peripheral edges 34.
- the edges 34 are in the nature of knife edges and constitute the Work gripping portions of the wrench.
- Each of the jaws 16 and 20 is provided with transverse openings 36 there through extending through opposed side faces of the respective jaws.
- the openings 32 extend inwardly of the jaws into communication with the transverse openings 36 and the latter communicate with the exterior of the jaw at the side faces, which are obviously at positions remote from the work engaging and gripping protuberances 30.
- the sharp peripheral edges of the protuberances 3i constitute effective work gripping means and the openings therethrough are in position to receive foreign matter and other debris which may be scraped or loosened from the work piece and that foreign matter is discharged through transverse openings 36 so that it does not accumulate on the wrench jaws and ultimately foul the same.
- Fig. 3 shows a preferred manner of forming the protuberances 30 on each of the jaws of the wrench.
- each protuberance 30 comprises the outer end portion of a short tubular insert 38.
- Each of the inserts 38 is provided with an inner end surface 40 abutting a stop surface 42 defined by the bottom of a recess 44.
- the tubular inserts 38 are snugly and frictionally held in the recesses 44 so as to be normally held in assembled relation to the jaw but are not permanently fixed therein and can be removed for resharpening or replacement when necessary or desirable.
- each insert 38 extends at least partially into its corresponding transverse opening 36 so that a suitable tapered or wedge-shaped tool may be inserted in the openings 36 to loosen and eject the inserts 38 when it becomes necessary or desirable to replace or recondition the same.
- the inserts 38 are preferably of hardened steel.
- the dotted line 42 of Fig. 3 indicates how a work piece will normally engage adjacent protuberances on at least one of the jaws. As will be obvious from that showing, any slipping or movement of the work engaging means relative to the work piece, in either direction, will result in the sharp edges '34 scraping foreign matter from the work piece directly into the openings 32.
- a wrench a pair of jaws having opposed faces, work engaging and gripping means on said faces, at least one of said faces having openings adjacent said work engaging and gripping means, each of said openings extending inwardly into said jaw and intersecting at its inner end an interior passageway in said jaw, said interior passageway in turn providing communication with the exterior of said jaw at a position remote from said Work engaging means, whereby foreign matter dislodged by said work engaging means is discharged through said openings 'to the exterior of said jaw.
- bosses comprise the outer end portions of open-ended tubular inserts removably seated in recesses in said faces, the interiors of said tubular inserts comprising said openings.
- a wrench as defined in claim 4 wherein said jaws are provided with opposed side surfaces adjacent said faces, said openings being substantially perpendicular to said faces and said passageways comprising transverse bores extending through said opposed side faces.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Description
July 21, 1959 m m -Cr' m J. c. MYERS ETAL 2,895,365 JAW FACE CONSTRUCTION FOR PIPE WRENCHES Filed Oct. 22, 1957 ATTORNEYS United StatesPatent JAW FACE CONSTRUCTION FOR PIPE WRENCHES John C. Myers and Monty M. Hagar, Salem, Ill. Application October 22, 1957, Serial No. 691,594
6 Claims. (Cl. 81-186) This invention relates to wrenches, and particularly to pipe wrenches or the like wherein the jaws are designed to exert a firm grip on a cylindrical or similar object.
Pipe and similar wrenches are conventionally formed with jaws having transverse serrations or grooves defining sharp-crested ridges or ribs for the purpose of biting into and firmly gripping a workpiece. As is well known, the grooves between the ridges often become filled with oil or grease and similar foreign matter usually mixed with dirt or dust and scale from the work pieces to such an extent that the grooves become completely filled with the foreign matter. That foreign matter soon becomes tightly compacted within the grooves to such an extent that it prevents the sharp crests from effectively biting into the work piece with consequent slipping and premature dulling of the sharp crests. It has been found to be difiicult to effectively remove such a compacted accumulation of foreign matter from the grooves of conventional wrenches and is always a time-consuming job. Furthermore, the resharpening of such crests on a conventional wrench is always a difiicult procedure.
According to the present invention, the gripping edges of such a wrench are formed as peripheral or boundary edges of openings extending into the respective wrench jaws and communicating with the exterior of the jaw at a point remote from the gripping elements. By such structure all dirt, scale, tar and the like scraped from the work piece by the gripping elements enters the openings and is conducted through the passageways and discharged from the wrench without being held thereon in position to become compacted and without interfering with the use of the wrench.
An exemplary embodiment of the invention will be discussed in detail, as applied to a pipe wrench, but it is to be understood that such description is for purpose of illustration only.
It is therefore an object of this invention to provide a pipe wrench having work engaging and gripping means adapted to remain permanently free of foreign matter.
It is a further object of this invention to provide a pipe wrench of the type set forth wherein the work engaging and gripping means are removable and replaceable.
It is a further object of this invention to provide a pipe wrench of the type set forth that is simple in construction, economical to manufacture, and eificient and reliable in operation.
Additional and further objects and advantages will become apparent to those skilled in the art as the description proceeds in connection with the accompanying drawings, wherein:
Fig. 1 is a side elevational view of a pipe wrench embodying the present invention;
Fig. 2 is an enlarged sectional view taken substantially along the line 2-2 of Fig. 1, looking in the direction of the arrows; and
Fig. 3 is a further enlarged fragmentary sectional view taken along the line 3-3 of Fig. 2.
The pipe wrench illustrated in the drawings comprises a more or less conventional pipe wrench structure having a handle 2 provided with an integral lateral projection 4 having a longitudinal opening 6 therethrough generally parallel to handle 2. A transverse opening 8, through projection 4, rotatably receives an internally threaded cylindrical nut 10 and retains the same against axial movement.
An end of the handle 2 adjacent the projection 4 is provided with a groove 12 removably receiving a rib 14 extending downwardly from a removable jaw 16. The jaw 16 is held in assembled relation to the Wrench handle by means of a transverse pin 18, as is well known in the art.
A movable jaw 20 is provided with a transversely flattened spanner shank 22 loosely slidable in the opening 6 of the projection 4. The shank 22 is further provided with thread portions 24 on opposed edges thereof, engageable with the internal threads of nut 10. As is well known in the art, rotation of the nut 10 effects movement of the jaw 20 to regulate the spacing thereof with respect to the jaw 16 to accommodate work pieces of different sizes.
The jaws 16 and 20 are provided with opposed faces 26 and 28, respectively. The faces 26 and 28 are, in turn, provided with spaced protuberances 30 extending outwardly from their respective faces and tapering toward their outer ends. Centrally through the protuberances 30 the jaws are provided with openings 32 (see also Fig. 2) extending through the outer ends of the protuberances and bounded by sharp peripheral edges 34. The edges 34 are in the nature of knife edges and constitute the Work gripping portions of the wrench. Each of the jaws 16 and 20 is provided with transverse openings 36 there through extending through opposed side faces of the respective jaws. The openings 32 extend inwardly of the jaws into communication with the transverse openings 36 and the latter communicate with the exterior of the jaw at the side faces, which are obviously at positions remote from the work engaging and gripping protuberances 30. As will be obvious, the sharp peripheral edges of the protuberances 3i constitute effective work gripping means and the openings therethrough are in position to receive foreign matter and other debris which may be scraped or loosened from the work piece and that foreign matter is discharged through transverse openings 36 so that it does not accumulate on the wrench jaws and ultimately foul the same.
Fig. 3 shows a preferred manner of forming the protuberances 30 on each of the jaws of the wrench. As shown in Fig. 3, each protuberance 30 comprises the outer end portion of a short tubular insert 38. Each of the inserts 38 is provided with an inner end surface 40 abutting a stop surface 42 defined by the bottom of a recess 44. The tubular inserts 38 are snugly and frictionally held in the recesses 44 so as to be normally held in assembled relation to the jaw but are not permanently fixed therein and can be removed for resharpening or replacement when necessary or desirable. Preferably an inner edge portion 46 of each insert 38 extends at least partially into its corresponding transverse opening 36 so that a suitable tapered or wedge-shaped tool may be inserted in the openings 36 to loosen and eject the inserts 38 when it becomes necessary or desirable to replace or recondition the same. The inserts 38 are preferably of hardened steel.
The dotted line 42 of Fig. 3 indicates how a work piece will normally engage adjacent protuberances on at least one of the jaws. As will be obvious from that showing, any slipping or movement of the work engaging means relative to the work piece, in either direction, will result in the sharp edges '34 scraping foreign matter from the work piece directly into the openings 32.
While a single preferred embodiment of the invention is shown and described herein, it is to be understood that the description is merely illustrative and that the invention encompasses other forms falling within the scope of the v appended claims.
.We claim:
1. In a wrench, a pair of jaws having opposed faces, work engaging and gripping means on said faces, at least one of said faces having openings adjacent said work engaging and gripping means, each of said openings extending inwardly into said jaw and intersecting at its inner end an interior passageway in said jaw, said interior passageway in turn providing communication with the exterior of said jaw at a position remote from said Work engaging means, whereby foreign matter dislodged by said work engaging means is discharged through said openings 'to the exterior of said jaw.
4 v bounded by said sharp peripheral edges, and means defining passageways from the inner ends of said openings to the exterior of said jawsfat positions remote from said bosses.
4. A wrench as defined in claim 3 wherein said bosses comprise the outer end portions of open-ended tubular inserts removably seated in recesses in said faces, the interiors of said tubular inserts comprising said openings.
5. A wrench as defined in claim 4 wherein said jaws are provided with opposed side surfaces adjacent said faces, said openings being substantially perpendicular to said faces and said passageways comprising transverse bores extending through said opposed side faces.
6. A wrench as defined in claim 5 wherein the inner ends of said inserts extend at least partially into said transverse bores.
References Cited in the file of this patent UNITED STATES PATENTS 1 ,692,911 Vaughn Nov. 27,1928 2,772,053 Schmidtmann Nov. 27, 1956 2,795,225 So'vatkin et a1. June 11, 1957
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US691594A US2895365A (en) | 1957-10-22 | 1957-10-22 | Jaw face construction for pipe wrenches |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US691594A US2895365A (en) | 1957-10-22 | 1957-10-22 | Jaw face construction for pipe wrenches |
Publications (1)
Publication Number | Publication Date |
---|---|
US2895365A true US2895365A (en) | 1959-07-21 |
Family
ID=24777162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US691594A Expired - Lifetime US2895365A (en) | 1957-10-22 | 1957-10-22 | Jaw face construction for pipe wrenches |
Country Status (1)
Country | Link |
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US (1) | US2895365A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3065920A (en) * | 1959-01-22 | 1962-11-27 | Bolton John W & Sons Inc | Working surfaces for refining engines |
US3247742A (en) * | 1962-10-22 | 1966-04-26 | William W Woodbury | Article gripping tool including pyramidal gripping elements |
US5351582A (en) * | 1992-09-04 | 1994-10-04 | Aldridge Electric Inc. | Pipe turning tool |
US5396819A (en) * | 1993-05-07 | 1995-03-14 | Bradley; Robert E. | Socket wrench |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1692911A (en) * | 1926-11-01 | 1928-11-27 | Versal V Vaughn | Trimming tool |
US2772053A (en) * | 1952-01-30 | 1956-11-27 | Koppers Co Inc | Granulator with moving and opposed sifter members carrying step-shape material pressers |
US2795225A (en) * | 1956-08-10 | 1957-06-11 | Sklar Mfg Co Inc J | Holders for suture needles |
-
1957
- 1957-10-22 US US691594A patent/US2895365A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1692911A (en) * | 1926-11-01 | 1928-11-27 | Versal V Vaughn | Trimming tool |
US2772053A (en) * | 1952-01-30 | 1956-11-27 | Koppers Co Inc | Granulator with moving and opposed sifter members carrying step-shape material pressers |
US2795225A (en) * | 1956-08-10 | 1957-06-11 | Sklar Mfg Co Inc J | Holders for suture needles |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3065920A (en) * | 1959-01-22 | 1962-11-27 | Bolton John W & Sons Inc | Working surfaces for refining engines |
US3247742A (en) * | 1962-10-22 | 1966-04-26 | William W Woodbury | Article gripping tool including pyramidal gripping elements |
US5351582A (en) * | 1992-09-04 | 1994-10-04 | Aldridge Electric Inc. | Pipe turning tool |
US5396819A (en) * | 1993-05-07 | 1995-03-14 | Bradley; Robert E. | Socket wrench |
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