US2466901A - Clamp or anchorage - Google Patents
Clamp or anchorage Download PDFInfo
- Publication number
- US2466901A US2466901A US747527A US74752747A US2466901A US 2466901 A US2466901 A US 2466901A US 747527 A US747527 A US 747527A US 74752747 A US74752747 A US 74752747A US 2466901 A US2466901 A US 2466901A
- Authority
- US
- United States
- Prior art keywords
- screw
- bore
- set screw
- threads
- slug
- 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
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
- H01R4/36—Conductive members located under tip of screw
-
- 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
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/39—Cord and rope holders
- Y10T24/3958—Screw clamp
-
- 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
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/39—Cord and rope holders
- Y10T24/3958—Screw clamp
- Y10T24/3967—Bolt perpendicular to cable axis
Definitions
- a hollow or axially bored set screw l5 one end of which has a head it to receive a rotating tool or wrench for forcefully advancing the inner end ll of the set screw into the bore l3.
- the axial bore l8 of the hollow set screw is internally threaded at H] to engage the threads 20 of a pressure screw 2 I.
- the head of this pressure screw is adapted to receive a wrence or rotating tool, whereby the screw may be driven through the set screw bore and toward the conductor end 9.
- the lower end of the presure screw is indicated at 22.
- the pressure screw 2! is adapted to drive very forcibly against and between the conductor strands, a mass of deformable material such as lead or any soft or ductile metal having the property of electric conductivity, and the ability to fill the voids or spaces between the conductor strands, thereby to increase the density of the conductor within the confines of the body bore 8.
- the mass of deformable material initially may be in the form of a slug 23 having a head 24 and a shank 25, or alternatively, it may consist of simply a cylindrical short bar or rod as indicated by the character 23A of Fig. 5.
- the slug will extend at least partially within the axial bore IQ of the set screw, so that the advancing force of the pressure screw may be applied to the slug for driving it forcefully against the conductor and dispersing the material thereof throughout the voids and spaces between the conductor strands.
- a very powerful force is available for deforming the slug and causing it to flow through the interstices of the conductor.
- This action of the slug material literally expands the conductor within the body bore 8, increases its density to a maximum degree, and thereby enhances the current conductivity property of the connection without mashing, mutilating, and weakening the conductor strands.
- a connection so made will obviously be mechanically strong and very tight, and will remain so, resulting in great dependability of the connection indefinitely. The possibility of destructive arcing and heating of the connection is thereby completely overcome, this being a consideration of primary importance to the invention.
- sealer disc 2'! of hard non-deformable material, the function of which is to minimize any tendency for the slug material to creep or extrude upwardly along the threads of the pressure screw during the clamping operation.
- the sealer disc may be of metal, or any hard material which will not fracture or disintegrate under the force of advancement of the pressure screw.
- the disc should preferably fit rather snugly within the set screw bore 89, as will be appreciated.
- the disc is slidable within said bore and advances with the pressure screw.
- Fig. 4 the invention above described is shown applied to a bus bar clamp consisting of the clamp plates 28 and 29 movable toward one another by tightening the nuts 30 upon the screws 3
- the body of this clamp is indicated at 32 and carries a plurality of perforated ears or lugs 33 bored and internally threaded to receive the screws 34 which clamp a. cover 35 onto the body.
- the screws 34 pass through perforated ears or lugs 36 of the cover.
- the concave elongated pad 38 initially clamps the bared end of a conductor 31.
- Cover 35 is supplied with a set screw and pressure screw arrangement l'6A2lA like that of Fig. 2, which performs as an auxiliary compressor and lock to efiect the tight current conductive connection as previously described herein.
- a rigid metallic body having a passageway to accommodate a portion of a member to be anchored, said body being bored transverse ly of the passageway intermediate the ends of the latter, a screw thread formed internally of the bore, a set screw having external threads engaging the threads of the bore, said set screw having an axial internally threaded bore, and a head exposed exteriorly of the body to receive a wrench, a pressure screw having external threads to engage the internal threads of the set screw, 2. head on the pressure screw extending beyond the head of the set screw for reception of a wrench, and a slug of deformable material in the set screw bore to be advanced against the member to be anchored by rotation of the pressure screw.
- a rigid metallic body having a passageway to accommodate a portion of a member to be anchored, said body being bored transversely of the passageway intermediate the ends of the latter, a screw thread formed internally of the bore, a set screw having external threads engaging the threads of the bore, said set screw having an axial internally threaded bore, and a head exposed exteriorly of the body to receive a wrench, a pressure screw having external threads to engage the internal threads of the set screw, and a head on the pressure screw extending beyond the head of the set screw for reception of a wrench, a slug of deformable material in the set screw bore to be advanced against the member to be anchored by rotation of the pressure screw, and means interposed between the slug and the advancing end of the pressure screw, to block dispersal of the slug material along the pressure screw threads in the direction of the screw heads.
- a rigid metallic body having a passageway to accommodate a portion of a multiplestrand cable to be anchored, said body being bored transversely of the passageway intermediate the ends thereof, a screw thread formed internally of the bore, a set screw having external threads engaging the threads of the bore, said set screw having an axial internally threaded bore, and a head exposed exteriorly of the body to receive a wrench, a pressure screw having external threads to engage the internal threads of the set screw, and a head on the pressure screw extending beyond the head of the set screw for reception of a rotary tool, and a slug of deformable electric current conducting metal in the set screw bore, to be advanced by rotation of the set screw and dispersed thereby throughout the spaces between the cable strands, for increasing the effective density of that portion of the cable which is within the passageway, thereby to effect a tight and solid anchorage and a low resistance electrical connection between the metallic body, the cable strands, and the interspersed deformable
- a rigid metallic body having a passageway to accommodate a portion of a multiplestrand cable to be anchored, said body being bored transversely of the passageway intermediat the ends thereof, a screw thread formed internally of the bore, a set screw having external threads engaging the threads of the bore, said set screw having an axial internally threaded bore, and a head exposed exteriorly of the body to receive a wrench, a pressure screw having external threads to engage the internal threads of the set screw, and a head on the pressure screw extending beyond the head of the set screw for reception of a rotary tool, and a slug of deformable electric current conducting metal in the set screw bore, to be advanced by rotation of the set screw and dispersed thereby throughout the spaces between the cable strands, for increasing the effective density of that portion of the cable which is within the passageway thereby to effect a tight and solid anchorage and a low resistance electrical connection between the metallic body, the cable strands, and the interspersed de
- a rigid metallic body having a passageway to accommodate a portion of a member to be anchored, said body being bored transversely of the passageway intermediate the ends of the latter, a screw thread formed internally of the bore, a set screw having exterior threads engaging the threads of the bore, said set screw having an axial internally threaded bore and a head exposed externally of the body to receive a wrench, a pressure screw having exterior threads to engage the internal threads of the set screw, a head on the pressure screw accessible exteriorly of the set screw, and a slug of deformable material in the set screw bore to be advanced against the member to be anchored by rotation of the pressure screw.
Landscapes
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Description
internally threaded to receive the corresponding threads M of a hollow or axially bored set screw l5, one end of which has a head it to receive a rotating tool or wrench for forcefully advancing the inner end ll of the set screw into the bore l3. The axial bore l8 of the hollow set screw is internally threaded at H] to engage the threads 20 of a pressure screw 2 I. The head of this pressure screw is adapted to receive a wrence or rotating tool, whereby the screw may be driven through the set screw bore and toward the conductor end 9. The lower end of the presure screw is indicated at 22.
The pressure screw 2! is adapted to drive very forcibly against and between the conductor strands, a mass of deformable material such as lead or any soft or ductile metal having the property of electric conductivity, and the ability to fill the voids or spaces between the conductor strands, thereby to increase the density of the conductor within the confines of the body bore 8. The mass of deformable material initially may be in the form of a slug 23 having a head 24 and a shank 25, or alternatively, it may consist of simply a cylindrical short bar or rod as indicated by the character 23A of Fig. 5. In either case, the slug will extend at least partially within the axial bore IQ of the set screw, so that the advancing force of the pressure screw may be applied to the slug for driving it forcefully against the conductor and dispersing the material thereof throughout the voids and spaces between the conductor strands. Because of the reduced diameter of the pressure screw and the limited area of its advancing end 22, a very powerful force is available for deforming the slug and causing it to flow through the interstices of the conductor. This action of the slug material literally expands the conductor within the body bore 8, increases its density to a maximum degree, and thereby enhances the current conductivity property of the connection without mashing, mutilating, and weakening the conductor strands. A connection so made will obviously be mechanically strong and very tight, and will remain so, resulting in great dependability of the connection indefinitely. The possibility of destructive arcing and heating of the connection is thereby completely overcome, this being a consideration of primary importance to the invention.
While in the foregoing explanation it has been made to appear that the advancing end of the pressure screw may bear directly upon the deformable slug 23 or 23A, some advantage may be realized by interposing between these elements a sealer disc 2'! of hard non-deformable material, the function of which is to minimize any tendency for the slug material to creep or extrude upwardly along the threads of the pressure screw during the clamping operation. The sealer disc may be of metal, or any hard material which will not fracture or disintegrate under the force of advancement of the pressure screw. The disc should preferably fit rather snugly within the set screw bore 89, as will be appreciated. The disc, of course, is slidable within said bore and advances with the pressure screw.
In Fig. 4, the invention above described is shown applied to a bus bar clamp consisting of the clamp plates 28 and 29 movable toward one another by tightening the nuts 30 upon the screws 3|. The body of this clamp is indicated at 32 and carries a plurality of perforated ears or lugs 33 bored and internally threaded to receive the screws 34 which clamp a. cover 35 onto the body.
The screws 34 pass through perforated ears or lugs 36 of the cover. When the cover is applied to the body and tightened down by means of the screws 36, the concave elongated pad 38 initially clamps the bared end of a conductor 31. Cover 35 is supplied with a set screw and pressure screw arrangement l'6A2lA like that of Fig. 2, which performs as an auxiliary compressor and lock to efiect the tight current conductive connection as previously described herein.
The purpose of the Fig. 4 disclosure is to indicate that the means of the invention may be applied to various forms of terminal devices which require secure connections of the character herein disclosed. Accordingly, it is to be understood that various modifications and changes in the structural details of the device may be made, within the scope of the appended claims, without departing from the spirit of the invention.
What is claimed is:
1. In a device of the class described, the combination of a rigid metallic body having a passageway to accommodate a portion of a member to be anchored, said body being bored transverse ly of the passageway intermediate the ends of the latter, a screw thread formed internally of the bore, a set screw having external threads engaging the threads of the bore, said set screw having an axial internally threaded bore, and a head exposed exteriorly of the body to receive a wrench, a pressure screw having external threads to engage the internal threads of the set screw, 2. head on the pressure screw extending beyond the head of the set screw for reception of a wrench, and a slug of deformable material in the set screw bore to be advanced against the member to be anchored by rotation of the pressure screw.
2. In a device of the class described, the combination of a rigid metallic body having a passageway to accommodate a portion of a member to be anchored, said body being bored transversely of the passageway intermediate the ends of the latter, a screw thread formed internally of the bore, a set screw having external threads engaging the threads of the bore, said set screw having an axial internally threaded bore, and a head exposed exteriorly of the body to receive a wrench, a pressure screw having external threads to engage the internal threads of the set screw, and a head on the pressure screw extending beyond the head of the set screw for reception of a wrench, a slug of deformable material in the set screw bore to be advanced against the member to be anchored by rotation of the pressure screw, and means interposed between the slug and the advancing end of the pressure screw, to block dispersal of the slug material along the pressure screw threads in the direction of the screw heads.
3. In a device of the class described, the combination of a rigid metallic body having a passageway to accommodate a portion of a multiplestrand cable to be anchored, said body being bored transversely of the passageway intermediate the ends thereof, a screw thread formed internally of the bore, a set screw having external threads engaging the threads of the bore, said set screw having an axial internally threaded bore, and a head exposed exteriorly of the body to receive a wrench, a pressure screw having external threads to engage the internal threads of the set screw, and a head on the pressure screw extending beyond the head of the set screw for reception of a rotary tool, and a slug of deformable electric current conducting metal in the set screw bore, to be advanced by rotation of the set screw and dispersed thereby throughout the spaces between the cable strands, for increasing the effective density of that portion of the cable which is within the passageway, thereby to effect a tight and solid anchorage and a low resistance electrical connection between the metallic body, the cable strands, and the interspersed deformable metal.
4. In a device or" the class described, the combination of a rigid metallic body having a passageway to accommodate a portion of a multiplestrand cable to be anchored, said body being bored transversely of the passageway intermediat the ends thereof, a screw thread formed internally of the bore, a set screw having external threads engaging the threads of the bore, said set screw having an axial internally threaded bore, and a head exposed exteriorly of the body to receive a wrench, a pressure screw having external threads to engage the internal threads of the set screw, and a head on the pressure screw extending beyond the head of the set screw for reception of a rotary tool, and a slug of deformable electric current conducting metal in the set screw bore, to be advanced by rotation of the set screw and dispersed thereby throughout the spaces between the cable strands, for increasing the effective density of that portion of the cable which is within the passageway thereby to effect a tight and solid anchorage and a low resistance electrical connection between the metallic body, the cable strands, and the interspersed deformable metal, and a hard non-deformable sealer disc in the set screw bore interposed between the slug and the advancing end of the pressure screw.
5. In a device of the class described, the combination of a rigid metallic body having a passageway to accommodate a portion of a member to be anchored, said body being bored transversely of the passageway intermediate the ends of the latter, a screw thread formed internally of the bore, a set screw having exterior threads engaging the threads of the bore, said set screw having an axial internally threaded bore and a head exposed externally of the body to receive a wrench, a pressure screw having exterior threads to engage the internal threads of the set screw, a head on the pressure screw accessible exteriorly of the set screw, and a slug of deformable material in the set screw bore to be advanced against the member to be anchored by rotation of the pressure screw.
FRED G. KRUEGER.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,771,805 Miller July 29, 1930 2,045,547 Chatfield June 23, 1936 2,068,152 Rowe Jan. 19, 1937 2,083,923 Rowe June 15, 1937
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US747527A US2466901A (en) | 1947-05-12 | 1947-05-12 | Clamp or anchorage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US747527A US2466901A (en) | 1947-05-12 | 1947-05-12 | Clamp or anchorage |
Publications (1)
Publication Number | Publication Date |
---|---|
US2466901A true US2466901A (en) | 1949-04-12 |
Family
ID=25005453
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US747527A Expired - Lifetime US2466901A (en) | 1947-05-12 | 1947-05-12 | Clamp or anchorage |
Country Status (1)
Country | Link |
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US (1) | US2466901A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2673971A (en) * | 1951-07-03 | 1954-03-30 | Kaemar John | Electrical cable connector |
US3237976A (en) * | 1963-08-12 | 1966-03-01 | Gen Lock Inc | Spindle hardware assembly |
US3268965A (en) * | 1964-05-11 | 1966-08-30 | Lisle Corp | Cable clamp |
FR2573924A1 (en) * | 1984-11-27 | 1986-05-30 | Sofrelec | Security procedure for the electrical contact provided by an electrical terminal, and corresponding electrical security terminal |
FR2573926A1 (en) * | 1984-11-27 | 1986-05-30 | Sofrelec | Clamping screw, especially for an electrical security terminal |
US20080277188A1 (en) * | 2006-07-07 | 2008-11-13 | Hydro-Gear Limited Partnership | Front Steering Module For A Zero Turn Radius Vehicle |
US8011678B1 (en) * | 2007-09-20 | 2011-09-06 | Hydro-Gear Limited Partnership | Steering system for a zero-turn radius vehicle |
WO2017098253A1 (en) * | 2015-12-12 | 2017-06-15 | Spinetic Energy Limited | A method and apparatus for forming an electrical connection |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1771805A (en) * | 1924-12-24 | 1930-07-29 | Charles E Newman | Electrical terminal |
US2045547A (en) * | 1929-04-04 | 1936-06-23 | Florence H Hamer | Junction clamp for electric wires |
US2068152A (en) * | 1934-03-03 | 1937-01-19 | Trumbull Electric Mfg Co | Solderless electrical terminal |
US2083923A (en) * | 1934-03-03 | 1937-06-15 | Trumbull Electric Mfg Co | Electrical terminal |
-
1947
- 1947-05-12 US US747527A patent/US2466901A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1771805A (en) * | 1924-12-24 | 1930-07-29 | Charles E Newman | Electrical terminal |
US2045547A (en) * | 1929-04-04 | 1936-06-23 | Florence H Hamer | Junction clamp for electric wires |
US2068152A (en) * | 1934-03-03 | 1937-01-19 | Trumbull Electric Mfg Co | Solderless electrical terminal |
US2083923A (en) * | 1934-03-03 | 1937-06-15 | Trumbull Electric Mfg Co | Electrical terminal |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2673971A (en) * | 1951-07-03 | 1954-03-30 | Kaemar John | Electrical cable connector |
US3237976A (en) * | 1963-08-12 | 1966-03-01 | Gen Lock Inc | Spindle hardware assembly |
US3268965A (en) * | 1964-05-11 | 1966-08-30 | Lisle Corp | Cable clamp |
FR2573924A1 (en) * | 1984-11-27 | 1986-05-30 | Sofrelec | Security procedure for the electrical contact provided by an electrical terminal, and corresponding electrical security terminal |
FR2573926A1 (en) * | 1984-11-27 | 1986-05-30 | Sofrelec | Clamping screw, especially for an electrical security terminal |
US8950520B2 (en) | 2006-07-07 | 2015-02-10 | Hydro-Gear Limited Partnership | Front steering module for a zero turn radius vehicle |
US20080277188A1 (en) * | 2006-07-07 | 2008-11-13 | Hydro-Gear Limited Partnership | Front Steering Module For A Zero Turn Radius Vehicle |
US10035537B2 (en) | 2006-07-07 | 2018-07-31 | Hydro-Gear Limited Partnership | Front steering module for a zero turn radius vehicle |
US8011678B1 (en) * | 2007-09-20 | 2011-09-06 | Hydro-Gear Limited Partnership | Steering system for a zero-turn radius vehicle |
US8152183B1 (en) * | 2007-09-20 | 2012-04-10 | Hydro-Gear Limited Partnership | Steering system for a zero-turn radius vehicle |
US8262109B1 (en) * | 2007-09-20 | 2012-09-11 | Hydro-Gear Limited Partnership | Steering system for a zero-turn radius vehicle |
WO2017098253A1 (en) * | 2015-12-12 | 2017-06-15 | Spinetic Energy Limited | A method and apparatus for forming an electrical connection |
GB2545278B (en) * | 2015-12-12 | 2020-04-08 | Spinetic Energy Ltd | A method and apparatus for forming an electrical connection |
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