US1981343A - Ground fittings - Google Patents

Ground fittings Download PDF

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Publication number
US1981343A
US1981343A US679522A US67952233A US1981343A US 1981343 A US1981343 A US 1981343A US 679522 A US679522 A US 679522A US 67952233 A US67952233 A US 67952233A US 1981343 A US1981343 A US 1981343A
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United States
Prior art keywords
wire
conductor
ground
section
mandrel
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Expired - Lifetime
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US679522A
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Stephen W Borden
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Individual
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Priority to US679522A priority Critical patent/US1981343A/en
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Publication of US1981343A publication Critical patent/US1981343A/en
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    • 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
    • H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
    • H01R4/46—Clamping area between two screws placed side by side
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/26—End pieces terminating in a screw clamp, screw or nut
    • 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
    • H01R4/58—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 characterised by the form or material of the contacting members
    • H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
    • H01R4/643—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail for rigid cylindrical bodies

Definitions

  • This invention pertains to ground fittings of the rigid base type.
  • the new features claimed include a swivel joint especially designed for forming and retaining the terminal of the ground conductor.
  • Figure 1 is a plan view of a complete fitting the dotted portion showing an alternative position of the conduit end portion.
  • Figure 2 is a plan View of the conduit end only with a ground wire in place around the mandrel.
  • Figure 3 is a front elevation corresponding to Figure 1.
  • Figure 4 is a sectional View on the center line of Figure 3.
  • Figures 4A and 4B are sectional views showing optional arrangements of the mandrel.
  • WP is a water pipe upon which the clamp base is fastened by means of the V-jaw member 21 and screws 22 and 23.
  • the clamp base terminates in a circular member 25 upon which is a circular boss 26.
  • the conductor terminal 126 is formed with a circular open channel 126 formed between the outer wall of the terminal 120 and a perpendicular mandrel or stud 121 at the center of the channel circle.
  • a thread 122 On the upper part of the stud is a thread 122 to receive a nut 123 for fastening the boss in the channel and forming a swivel joint.
  • a threaded hub 124 receives a conduit from which a ground conductor, as 125, protrudes.
  • the conductor 125 is bent or formed around the mandrel 121 and this is greatly facilitated by the fact that the mandrel is considerably higher than the side walls of the terminal.
  • the clamp 20--21 is fastened to the water pipe, the mandrel 121 is inserted through the hole in the center of 25 and the nut 123 applied and tightened.
  • the wire channel has no protruding shoulders or ridges upon which the conductor may lodge as it is forced down into the channel and formed to fit it.
  • the channel is sufficiently deep so that a portion of the boss'is always below the top of the channel when clamping any conductor for which the fitting is designed. This makes the joint a suitable solderless connector for stranded, as well as solid conductors.
  • the conductor 125 is generally of copper while the other members are iron and clamping the conductor between the parts avoids an iron-to-iron contact.
  • An electrical connector for connecting together a water pipe and an electrical conduit and a conductor protruding from the conduit, which includes; a first rigid section for seating against the pipe said section having a ring shaped boss with an aperture at its center; a second rigid section having a circular open channel to receive the boss and the conductor; means for attaching the first sectionto the water pipe, for
  • An electrical connector for connecting a ground wire to a water pipe which includes; a
  • first section having means for attachment to the water pipe and to a second section including a circular boss with an aperture at its center; a second section having a circular seat for the wire and a mandrel, attached to the center of the seat, for conforming the wire to the seat;
  • An electrical connector for connecting a ground wire to a water pipe which includes; a first section having means for attachment to a water pipe and to a second section including a wire clamping surface with an aperture at its center; a second section which includes a wire clamping surface with a mandrel attached at its center, for conforming the wire to the clamping surface; and means for fastening the sections together with the wire clamped between the two clamping surfaces and with the mandrel extending through the aperture of the first section.

Landscapes

  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)

Description

Nov. 20, 1934.
s. w. BORDEN 1,981,343
GROUND FITTINGS Filed July 8, 1933 INVENTOR ATTORNEY Patented Nov. 20, 1934 GROUND FITTINGS Stephen W. Borden, Summit, N. J.
Application July 8, 1933, Serial No. 679,522
4 Claims.
This invention pertains to ground fittings of the rigid base type.
The new features claimed include a swivel joint especially designed for forming and retaining the terminal of the ground conductor.
In the drawing, Figure 1 is a plan view of a complete fitting the dotted portion showing an alternative position of the conduit end portion. Figure 2 is a plan View of the conduit end only with a ground wire in place around the mandrel. Figure 3 is a front elevation corresponding to Figure 1. Figure 4 is a sectional View on the center line of Figure 3. Figures 4A and 4B are sectional views showing optional arrangements of the mandrel.
Referring to Figs. 1-4, WP is a water pipe upon which the clamp base is fastened by means of the V-jaw member 21 and screws 22 and 23. The clamp base terminates in a circular member 25 upon which is a circular boss 26.
The conductor terminal 126 is formed with a circular open channel 126 formed between the outer wall of the terminal 120 and a perpendicular mandrel or stud 121 at the center of the channel circle. On the upper part of the stud is a thread 122 to receive a nut 123 for fastening the boss in the channel and forming a swivel joint. A threaded hub 124 receives a conduit from which a ground conductor, as 125, protrudes.
When assembling the fitting in actual use, the conductor 125 is bent or formed around the mandrel 121 and this is greatly facilitated by the fact that the mandrel is considerably higher than the side walls of the terminal. The clamp 20--21 is fastened to the water pipe, the mandrel 121 is inserted through the hole in the center of 25 and the nut 123 applied and tightened.
It should be noted that it is necessary to use a wrench to tighten the joint, thus insuring a tighter job than when the use of a screw-driver is permissible. The wire channel has no protruding shoulders or ridges upon which the conductor may lodge as it is forced down into the channel and formed to fit it. The channel is sufficiently deep so that a portion of the boss'is always below the top of the channel when clamping any conductor for which the fitting is designed. This makes the joint a suitable solderless connector for stranded, as well as solid conductors. The conductor 125 is generally of copper while the other members are iron and clamping the conductor between the parts avoids an iron-to-iron contact.
What I claim is:
and attached thereto and extending through the hole in the boss and a thread and nut on the stud for fastening the sections together and for clamping a wire between the sections.
2. An electrical connector for connecting together a water pipe and an electrical conduit and a conductor protruding from the conduit, which includes; a first rigid section for seating against the pipe said section having a ring shaped boss with an aperture at its center; a second rigid section having a circular open channel to receive the boss and the conductor; means for attaching the first sectionto the water pipe, for
attaching the second section to the conduit and for attaching the two sections together with the conductor clamped between the bottom of the channel and the outer edge of the boss.
3. An electrical connector for connecting a ground wire to a water pipe which includes; a
first section having means for attachment to the water pipe and to a second section including a circular boss with an aperture at its center; a second section having a circular seat for the wire and a mandrel, attached to the center of the seat, for conforming the wire to the seat;
and means for fastening the sections together and for clamping the wire to the seat with the boss received in the seat.
4. An electrical connector for connecting a ground wire to a water pipe which includes; a first section having means for attachment to a water pipe and to a second section including a wire clamping surface with an aperture at its center; a second section which includes a wire clamping surface with a mandrel attached at its center, for conforming the wire to the clamping surface; and means for fastening the sections together with the wire clamped between the two clamping surfaces and with the mandrel extending through the aperture of the first section.
STEPHEN W. BORDEN.
US679522A 1933-07-08 1933-07-08 Ground fittings Expired - Lifetime US1981343A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US679522A US1981343A (en) 1933-07-08 1933-07-08 Ground fittings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US679522A US1981343A (en) 1933-07-08 1933-07-08 Ground fittings

Publications (1)

Publication Number Publication Date
US1981343A true US1981343A (en) 1934-11-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
US679522A Expired - Lifetime US1981343A (en) 1933-07-08 1933-07-08 Ground fittings

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2626309A (en) * 1949-10-01 1953-01-20 Duncan Electric Mfg Co Heavy-duty meter facilities
US3023391A (en) * 1959-09-21 1962-02-27 K P F Electric Co Universal connector for electric wires
US3901577A (en) * 1974-01-25 1975-08-26 Gen Signal Corp Grounding clamps and connectors therefor
EP0871244A2 (en) * 1997-03-10 1998-10-14 Framatome Connectors International Paint penetrating ground clamp for painted raised floor pedestal
US20140374138A1 (en) * 2012-01-13 2014-12-25 Tyco Electronic Uk Ltd. Conductive connection assembly, method for manufacturing the same and kit for a body comprising carbon fibre-reinforced material

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2626309A (en) * 1949-10-01 1953-01-20 Duncan Electric Mfg Co Heavy-duty meter facilities
US3023391A (en) * 1959-09-21 1962-02-27 K P F Electric Co Universal connector for electric wires
US3901577A (en) * 1974-01-25 1975-08-26 Gen Signal Corp Grounding clamps and connectors therefor
EP0871244A2 (en) * 1997-03-10 1998-10-14 Framatome Connectors International Paint penetrating ground clamp for painted raised floor pedestal
EP0871244A3 (en) * 1997-03-10 1999-12-08 Framatome Connectors International Paint penetrating ground clamp for painted raised floor pedestal
US20140374138A1 (en) * 2012-01-13 2014-12-25 Tyco Electronic Uk Ltd. Conductive connection assembly, method for manufacturing the same and kit for a body comprising carbon fibre-reinforced material
US9859630B2 (en) * 2012-01-13 2018-01-02 Tyco Electronics Uk Ltd. Conductive connection assembly, method for manufacturing the same and kit for a body comprising carbon fibre-reinforced material

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