US2221986A - Electrical connector - Google Patents

Electrical connector Download PDF

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Publication number
US2221986A
US2221986A US291112A US29111239A US2221986A US 2221986 A US2221986 A US 2221986A US 291112 A US291112 A US 291112A US 29111239 A US29111239 A US 29111239A US 2221986 A US2221986 A US 2221986A
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United States
Prior art keywords
bolt
follower
nut
shank
connector
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Expired - Lifetime
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US291112A
Inventor
Frederick W Mebold
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James R Kearney Corp
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James R Kearney Corp
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Priority to US291112A priority Critical patent/US2221986A/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
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/32—Conductive members located in slot or hole in 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.
    • Y10T24/44—Clasp, clip, support-clamp, or required component thereof
    • Y10T24/44291—Clasp, clip, support-clamp, or required component thereof including pivoted gripping member
    • Y10T24/44547—Clasp, clip, support-clamp, or required component thereof including pivoted gripping member having inserted and receiving interlocking engaging faces
    • 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.
    • Y10T24/44—Clasp, clip, support-clamp, or required component thereof
    • Y10T24/44573—Clasp, clip, support-clamp, or required component thereof including track or way guided and retained gripping member
    • Y10T24/4459—Clasp, clip, support-clamp, or required component thereof including track or way guided and retained gripping member with operator for moving guided member
    • Y10T24/44598—Threaded cylindrical rod and mating cavity

Definitions

  • This invention relates generallyto connectors adapted for use in mechanically and electrically connecting electrical conductors in the construction, repair, and extension of electrical systems such as telephone, telegraph, light, and power lines, and more specifically to connectors of this general type which are of the well known split bolt type, the predominant object of the invention being to provide an improved connector of the type mentioned which, because of its unique construction and arrangement, is capable of economical production and eflicient and convenient operation in use.
  • Fig. l is an end elevation of one of the improved connectors showing same as it appears when a pair of electrical conductors are being maintained in mechanical and electrical connection with the aid of the connector, the electrical conductors being shown in section.
  • Fig. 2 is a view of the connector and conductor assembly shown in Fig. 1, a portion of the connector and the conductors being shown in side elevation, and another portion of the connector being shown in vertical section.
  • Fig. 3 is a view partly in end elevation and partly in section showing the connector as it appears when the nut and follower assembly thereof is swung aside to open the conductor slots of the split bolt of the connector for passage of conductors thereinto.
  • Fig. 4 is a. horizontal section on line 4-4 of Fig. 2.
  • Fig. 5 illustrates partly in end elevation and partly in section a modified form of the split bolt of the connector.
  • Fig. 6 is an inverted plan view of the structure illustrated in Fig. 5.
  • the connector A includes a bolt B of the split type, said bolt being provided with a polygonal head portion 1 from which the shank 2 of the bolt extends.
  • the shank of the bolt is of tubular formation and the circumferential wall of said shank has formed therein opposed and alined slot-like openings 3 each of which is open at the outer end of the shank and terminates at the inner portion of the head portion 1 of the bolt in a suitably shaped conductor seat 4.
  • the solid portions of the circumferential wall of the shank of the bolt B are of arcuate configuration and the outer faces of said solid portions are provided with screwthreads.
  • the improved connector includes also a nut and follower assembly C comprised of a nut 5 and a follower 6, said nut being closed at its lower end by means of a wall 5' as shown in Fig. 2,
  • the follower 5 is in the form of a short tube provided with a bottom wall 6, and at its opposite or upper end the follower is provided with a pair of alined and opposed arcuate recesses l which provide conductor seats.
  • the nut 5 and the follower 6 are connected together by means of a rivet 5a (Fig. 2), the swivel connection between said nut and follower provided by said rivet being sufficiently loose to permit the nut to rotate with respect to the follower.
  • the follower 6 has formed in the wall thereof a slot 8 which is closed at its top and is open at the lower end of the follower 6, a short exten sion of said slot 8 being extended into the bottom wall 5 of the follower as shown in Fig. 3.
  • Extended into the slot 8 is a hook-shaped element 9, said hookshaped element 9 being secured to the shank of the bolt by having its longer leg 9a forced into an aperture formed in the lower portion of the wall of the bolt shank as shown in Fig. 3, and said element 9 including in addition to the longer leg mentioned, a portion 91) which extends horizontally from the lower end of the longer leg 9a, and an upstanding shorter leg 90.
  • the nut In the operative position of the connector the nut is screwed on the exterior of the shank 2 of the bolt B and the follower, whose external diameter is substantially the same as the internal diameter of the bolt shank, is extended in a te1escopic manner into the interior of said bolt shank as shown in Fig. 2.
  • the nut and follower assembly C When the nut and follower assembly C is being moved inwardly of the bolt shank to connect a pair of conductors as shown in Figs. 1 and 2, wherein the conductors are designated by the reference character D, the nut is rotated to cause it to be screwed inwardly on the exterior of the bolt shank and the follower passes inwardly in a telescopic manner into the interior of said bolt shank.
  • the hook-shaped element 9 is extended into the slot 8 of the follower at all times and therefore when the nut is rotated relative to the bolt shank as described, the follower is guided for straight line movement relative to the bolt shank by said hook shaped member.
  • the conductor seats 1 of the follower are extended into the slot 8 of the follower at all times and therefore when the nut is rotated relative to the bolt shank as described, the follower is guided for straight line movement relative to the bolt shank by said hook shaped member.
  • the hook-shaped element 9 serves also as a retaining means for preventing complete detachment of the nut and follower assembly from the bolt of the connector as shown in Fig. 3.
  • the portion 8' of the follower which is located at the inner end of the slot 8 of said follower, is embraced by the lower portion of said hookshaped member.
  • the nut and follower assembly may be swung to one side as shown in Fig.
  • the portion 8' of the follower moves into a position where it is engaged by the hook-shaped member 9 as the nut becomes disengaged from the shank of the bolt.
  • the nut and follower assembly may then be swung aside, as shown in Fig. 3, to permit the bolt of the connector to be removed from the conductors.
  • the bolt of the connector illustrated is of such construction that it may be made in various ways, such, for instance, on a screw machine.
  • a connector bolt B is shown which may be stamped or drawn from sheet metal.
  • a hookshaped element may be provided in association with the bolt in various ways, for instance, an extension may be formed on the metal which produces the bolt and this extension may be shaped to produce a hook-shaped member 9' which corresponds to the hook-shaped element 9 of Figs. 1 to 4, inclusive.
  • a connector comprising a bolt having a hollow shank provided with opposed openings formed in the wall thereof and alined transversely of the bolt, the wall portions of the hollow shank of said bolt at opposite sides of said openings being of arcuate shape and of substantially constant thickness throughout, said openings being open at an end of the bolt shank and terminating at their opposite ends in conductor seats, and a nut and follower assembly which includes a nut adapted to be screwed externally on the bolt shank and a follower which is adapted to move with the nut when said nut is screwed on the bolt shank within the interior of the bolt shank and inwardly of the opposed openings thereof to clamp a conductor between a portion of said follower and the conductor seats of said openings of the bolt shank, the outer surface of said follower being curved in substantial accordance with the curvature of the inner faces of the arcuate wall portions of the shank of said bolt.
  • a connector comprising a bolt having a hollow shank provided with opposed openings formed in the wall thereof and alined transversely of the bolt, the wall portions of the hollow shank of said bolt at opposite sides of said openings being of arcuate shape and of substantially constant thickness throughout, said openings being open at an end of the bolt shank and terminating at their opposite ends in conductor seats, and a nut and follower assembly which includes a nut adapted to be screwed externally on the bolt shank and a follower which is adapted to move with the nut when said nut is screwed on the bolt shank within the interior of the bolt shank and inwardly of the opposed openings thereof to clamp a conductor between a portion of said follower and the conductor seats of said openings of the bolt shank, the outer surface of said follower being curved in substantial accordance with the curvature of the inner faces of the arcuate wall portions of the shank of said bolt, and means for connecting said nut and follower so that the nut may rotate with respect to said
  • a connector comprising a bolt having a hollow shank provided with opposed openings formed in the wall thereof and alined transversely of the bolt, the wall portions of the hollow shank of said bolt at opposite sides of said openings being of arcuate shape and of substantially constant thickness throughout, said openings being open at an end of the bolt shank and terminating at their opposite ends in conductor seats, a nut and follower assembly which includes a nut adapted to be screwed externally on the bolt shank and a follower which is adapted to move with the nut when said nut is screwed onthe bolt shank within the interior of the bolt shank and inwardly of the opposed openings thereof to clamp a conductor between a portion of said follower and the conductor seats of said openings of the bolt shank, the outer surface of said follower being curved in substantial accordance with the curvature of the inner faces of the arcuate wall portions of the shank of said bolt, swivel means for connecting said nut and follower so that the nut may rotate with
  • a connector comprising a bolt having a hollow shank provided with opposed openings formed in the wall thereof and alined transversely of the bolt, the wall portions of the hollow shank of said bolt at opposite sides of said openings being of arcuate shape and of substantially constant thickness throughout, said openings being open at an end of the bolt shank and terminating at their opposite ends in conductor seats, a nut and follower assembly which includes a nut adapted to be screwed externally on the bolt shank and a follower which is adapted to move with the nut when said nut is screwed on the bolt shank within the interior of the bolt shank and inwardly of the opposed openings thereof to clampa conductor between a portion of said follower and the conductor seats of said openings of the bolt shank, the outer surface of said follower being curved in substantial accordance with the curvature of the inner faces of the arouate wall portions of the shank of said bolt, swivel means for connecting said nut and follower so that the nut may rotate with
  • a connector comprising a bolt having a hollow shank provided with opposed openings formed in the wall thereof and alined transversely of the bolt, the wall portions of the hollow shank of said bolt at opposite sides of said openings being of arcuate shape and of substantially constant thickness throughout, said openings being open at an end of the bolt shank and terminating at their opposite ends in conductor seats, a nut and follower assembly which includes a nut adapted to be screwed externally on the bolt shank and a follower which is adapted to move with the nut when said nut is screwed on the bolt shank within the interior of the bolt shank and inwardly of the opposed openings thereof to clamp a conductor between a portion of said follower and the conductor seats of said openings of the bolt shank, the outer surface of said follower being curved in substantial accordance with the curvature of the inner faces of the arcuate wall portions of the shank of said bolt, swivel means for connecting said nut and follower so that the nut may rotate with
  • a connector comprising a. bolt having a hollow shank provided with opposed openings formed in the wall thereof and alined trans-' versely of the bolt, the wall portions of the hollow shank of said bolt at opposite sides of said openings being of arcuate shape and of substantially constant thickness throughout, said openings being open at an end of the bolt shank and terminating at their opposite ends in conductor seats, a nut and follower assembly which includes a nut adapted to be screwed externally on the bolt shank and a follower which is adapted to move with the nut when said nut is screwed on the bolt shank within the interior of the bolt shank and inwardly of the opposed openings thereof to clamp a conductor between a portion of said follower and the conductor seats of said openings of the bolt shank, the outer surface of said follower being curved in substantial accordance with the curvature of the inner faces of the arouate wall portions of the shank of said bolt, swivel means for connecting said nut and follower so that the
  • a connector comprising a bolt having a tubular shank provided with opposed openings formed in the wall thereof and alined transversely of the bolt, said openings being open at an end of the bolt shank and terminating at their opposite ends in conductor seats, a nut and follower assembly which includes a nut adapted to be screwed externally on the bolt shank and a follower in the form of a tubular element which is adapted to move with the nut when said nut is screwed on the bolt shank within the interior of the bolt shank and inwardly of the opposed openings thereof to clamp a conductor between a.
  • a connector comprising a bolt having a tubular shank provided with opposed openings formed in the Wall thereof and alined transversely of the bolt, said openings being open at an end of the bolt shank and terminating at their opposite ends in conductor seats, a nut and follower assembly which includes a nut adapted to be screwed externally on the bolt shank and a follower in the form of a tubular element which is adapted to move with the nut when said nut is screwed on the bolt shank within the interior of the bolt shank and inwardly of the opposed openings thereof to clamp a conductor between a portion of said follower and the conductor seats of said openings of the bolt shank, swivel means for connecting said nut and follower so that the nut may rotate with respect to said follower, and means supported by said bolt shank for guiding said follower for straight line movement relative to said bolt shank while the nut is rotated to screw it on the bolt shank, said means for guiding the follower for straight line movement compris

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

Description

Filed Aug. 21, i939 Ava/52v 70 v FFfDE/Z/CK 14/. M55010 Patented Nov. 19, 1940 UNITED STATES PATENT OFFICE ELECTRICAL CONNECTOR Application August 21,
8 Claims.
This invention relates generallyto connectors adapted for use in mechanically and electrically connecting electrical conductors in the construction, repair, and extension of electrical systems such as telephone, telegraph, light, and power lines, and more specifically to connectors of this general type which are of the well known split bolt type, the predominant object of the invention being to provide an improved connector of the type mentioned which, because of its unique construction and arrangement, is capable of economical production and eflicient and convenient operation in use.
Fig. l is an end elevation of one of the improved connectors showing same as it appears when a pair of electrical conductors are being maintained in mechanical and electrical connection with the aid of the connector, the electrical conductors being shown in section.
Fig. 2 is a view of the connector and conductor assembly shown in Fig. 1, a portion of the connector and the conductors being shown in side elevation, and another portion of the connector being shown in vertical section.
Fig. 3 is a view partly in end elevation and partly in section showing the connector as it appears when the nut and follower assembly thereof is swung aside to open the conductor slots of the split bolt of the connector for passage of conductors thereinto.
Fig. 4 is a. horizontal section on line 4-4 of Fig. 2.
Fig. 5 illustrates partly in end elevation and partly in section a modified form of the split bolt of the connector.
Fig. 6 is an inverted plan view of the structure illustrated in Fig. 5.
In the drawing, wherein are shown for the purpose of illustration, merely, two embodiments of 40 the invention, A designates, in Figs. 1 to 4, in-
clusive, the improved connector generally. The connector A includes a bolt B of the split type, said bolt being provided with a polygonal head portion 1 from which the shank 2 of the bolt extends. The shank of the bolt is of tubular formation and the circumferential wall of said shank has formed therein opposed and alined slot-like openings 3 each of which is open at the outer end of the shank and terminates at the inner portion of the head portion 1 of the bolt in a suitably shaped conductor seat 4. As shown to the best advantage in Fig. 4, the solid portions of the circumferential wall of the shank of the bolt B are of arcuate configuration and the outer faces of said solid portions are provided with screwthreads.
The improved connector includes also a nut and follower assembly C comprised of a nut 5 and a follower 6, said nut being closed at its lower end by means of a wall 5' as shown in Fig. 2,
1939, Serial No.- 291,112
and, of course, being internally screwthreaded. The follower 5 is in the form of a short tube provided with a bottom wall 6, and at its opposite or upper end the follower is provided with a pair of alined and opposed arcuate recesses l which provide conductor seats. The nut 5 and the follower 6 are connected together by means of a rivet 5a (Fig. 2), the swivel connection between said nut and follower provided by said rivet being sufficiently loose to permit the nut to rotate with respect to the follower.
The follower 6 has formed in the wall thereof a slot 8 which is closed at its top and is open at the lower end of the follower 6, a short exten sion of said slot 8 being extended into the bottom wall 5 of the follower as shown in Fig. 3. Extended into the slot 8 is a hook-shaped element 9, said hookshaped element 9 being secured to the shank of the bolt by having its longer leg 9a forced into an aperture formed in the lower portion of the wall of the bolt shank as shown in Fig. 3, and said element 9 including in addition to the longer leg mentioned, a portion 91) which extends horizontally from the lower end of the longer leg 9a, and an upstanding shorter leg 90.
At the location of the hook-shaped element 9 the lower portion of the bolt shank is provided with an arcuatenotch H) which serves a purpose to be hereinafter-set forth.
In the operative position of the connector the nut is screwed on the exterior of the shank 2 of the bolt B and the follower, whose external diameter is substantially the same as the internal diameter of the bolt shank, is extended in a te1escopic manner into the interior of said bolt shank as shown in Fig. 2. When the nut and follower assembly C is being moved inwardly of the bolt shank to connect a pair of conductors as shown in Figs. 1 and 2, wherein the conductors are designated by the reference character D, the nut is rotated to cause it to be screwed inwardly on the exterior of the bolt shank and the follower passes inwardly in a telescopic manner into the interior of said bolt shank. When the bolt and follower assembly have moved the required distance the conductor seats I at the inner end of the follower will contact with the foremost conductor D and continued movement of the nut and follower assembly with respect to the bolt of the connector will cause theconductors to be forced together tightly and be clamped securely between the conductor seats 1 of the follower and the conductor seat l of the bolt as shown in Figs. 1 and 2.
It is to be noted that the hook-shaped element 9 is extended into the slot 8 of the follower at all times and therefore when the nut is rotated relative to the bolt shank as described, the follower is guided for straight line movement relative to the bolt shank by said hook shaped member. Thus, the conductor seats 1 of the follower,
during movement of said follower longitudinally of the bolt shank, are maintained at all times in their proper alined positions with respect to the conductor seat 4 of the bolt so that the conductors will be engaged and clamped between said conductor seats in the manner previously described herein.
In addition to serving as a means for guiding the follower for straight line movement as explained above, the hook-shaped element 9 serves also as a retaining means for preventing complete detachment of the nut and follower assembly from the bolt of the connector as shown in Fig. 3. When the nut and follower assembly is engaged by the hook-shaped element 9 as shown in Fig. 3 theportion 8' of the follower, which is located at the inner end of the slot 8 of said follower, is embraced by the lower portion of said hookshaped member. When so engaged the nut and follower assembly may be swung to one side as shown in Fig. 3, in which position a portion of the follower is nested in the arcuate notch I0, and the openings 3 of the bolt shank are opened at their lower ends to receive conductors to be connected by the connector. When the bolt has been assembled with the conductors to be connected by the connector, the nut and follower assembly is moved to an alined position with respect to the shank of the bolt and the nut is screwed on the bolt shank to move the follower inwardly oi the bolt shank to clamp the conductors as has been previously explained herein. Also when the nut is unscrewed from the bolt shank to remove the connector from conductors with which it has been associated, the portion 8' of the follower moves into a position where it is engaged by the hook-shaped member 9 as the nut becomes disengaged from the shank of the bolt. The nut and follower assembly may then be swung aside, as shown in Fig. 3, to permit the bolt of the connector to be removed from the conductors.
In Figs. 1 to 4, inclusive, the bolt of the connector illustrated is of such construction that it may be made in various ways, such, for instance, on a screw machine. In Figs. 5 and 6, however, a connector bolt B is shown which may be stamped or drawn from sheet metal. In connection with this form of connector bolt a hookshaped element may be provided in association with the bolt in various ways, for instance, an extension may be formed on the metal which produces the bolt and this extension may be shaped to produce a hook-shaped member 9' which corresponds to the hook-shaped element 9 of Figs. 1 to 4, inclusive.
' An important feature of the invention is that the follower 6 prevents collapsing of the legs of the bolt 13 when the nut 5 is screwed inwardly on the shank portion of said bolt to clamp conductors between the conductor seats of the bolt and follower, this result being attained because of the telescopic relation of the bolt and the follower.
I claim:
1. A connector comprising a bolt having a hollow shank provided with opposed openings formed in the wall thereof and alined transversely of the bolt, the wall portions of the hollow shank of said bolt at opposite sides of said openings being of arcuate shape and of substantially constant thickness throughout, said openings being open at an end of the bolt shank and terminating at their opposite ends in conductor seats, and a nut and follower assembly which includes a nut adapted to be screwed externally on the bolt shank and a follower which is adapted to move with the nut when said nut is screwed on the bolt shank within the interior of the bolt shank and inwardly of the opposed openings thereof to clamp a conductor between a portion of said follower and the conductor seats of said openings of the bolt shank, the outer surface of said follower being curved in substantial accordance with the curvature of the inner faces of the arcuate wall portions of the shank of said bolt.
2. A connector comprising a bolt having a hollow shank provided with opposed openings formed in the wall thereof and alined transversely of the bolt, the wall portions of the hollow shank of said bolt at opposite sides of said openings being of arcuate shape and of substantially constant thickness throughout, said openings being open at an end of the bolt shank and terminating at their opposite ends in conductor seats, and a nut and follower assembly which includes a nut adapted to be screwed externally on the bolt shank and a follower which is adapted to move with the nut when said nut is screwed on the bolt shank within the interior of the bolt shank and inwardly of the opposed openings thereof to clamp a conductor between a portion of said follower and the conductor seats of said openings of the bolt shank, the outer surface of said follower being curved in substantial accordance with the curvature of the inner faces of the arcuate wall portions of the shank of said bolt, and means for connecting said nut and follower so that the nut may rotate with respect to said follower.
3. A connector comprising a bolt having a hollow shank provided with opposed openings formed in the wall thereof and alined transversely of the bolt, the wall portions of the hollow shank of said bolt at opposite sides of said openings being of arcuate shape and of substantially constant thickness throughout, said openings being open at an end of the bolt shank and terminating at their opposite ends in conductor seats, a nut and follower assembly which includes a nut adapted to be screwed externally on the bolt shank and a follower which is adapted to move with the nut when said nut is screwed onthe bolt shank within the interior of the bolt shank and inwardly of the opposed openings thereof to clamp a conductor between a portion of said follower and the conductor seats of said openings of the bolt shank, the outer surface of said follower being curved in substantial accordance with the curvature of the inner faces of the arcuate wall portions of the shank of said bolt, swivel means for connecting said nut and follower so that the nut may rotate with respect to said follower, and means for guiding said follower for straight line movement relative to said bolt shank while said nut is rotated to screw it on the bolt shank.
4. A connector comprising a bolt having a hollow shank provided with opposed openings formed in the wall thereof and alined transversely of the bolt, the wall portions of the hollow shank of said bolt at opposite sides of said openings being of arcuate shape and of substantially constant thickness throughout, said openings being open at an end of the bolt shank and terminating at their opposite ends in conductor seats, a nut and follower assembly which includes a nut adapted to be screwed externally on the bolt shank and a follower which is adapted to move with the nut when said nut is screwed on the bolt shank within the interior of the bolt shank and inwardly of the opposed openings thereof to clampa conductor between a portion of said follower and the conductor seats of said openings of the bolt shank, the outer surface of said follower being curved in substantial accordance with the curvature of the inner faces of the arouate wall portions of the shank of said bolt, swivel means for connecting said nut and follower so that the nut may rotate with respect to said follower, and means supported by the bolt shank for guiding said follower for straight line movement relative to said bolt shank while said nut is rotated to screw it on the bolt shank, said means for guiding the follower for straight line movement being adapted to engage a portion of said nut and follower assembly as the nut thereof is removed from the bolt shank to prevent complete detachment of the nut and follower assembly from the bolt of the connector.
5. A connector comprising a bolt having a hollow shank provided with opposed openings formed in the wall thereof and alined transversely of the bolt, the wall portions of the hollow shank of said bolt at opposite sides of said openings being of arcuate shape and of substantially constant thickness throughout, said openings being open at an end of the bolt shank and terminating at their opposite ends in conductor seats, a nut and follower assembly which includes a nut adapted to be screwed externally on the bolt shank and a follower which is adapted to move with the nut when said nut is screwed on the bolt shank within the interior of the bolt shank and inwardly of the opposed openings thereof to clamp a conductor between a portion of said follower and the conductor seats of said openings of the bolt shank, the outer surface of said follower being curved in substantial accordance with the curvature of the inner faces of the arcuate wall portions of the shank of said bolt, swivel means for connecting said nut and follower so that the nut may rotate with respect to said follower, and means supported by the bolt shank for guiding said follower for straight line movement relative to said bolt shank while said nut is rotated to screw it on the bolt shank, said means for guiding the follower for straight line movement being in the form of a, hook-shaped element adapted to engage a portion of said nut and follower assembly as the nut thereof is removed from the bolt shank to prevent complete detachment of the nut and follower assembly from the bolt of the connector.
6. A connector comprising a. bolt having a hollow shank provided with opposed openings formed in the wall thereof and alined trans-' versely of the bolt, the wall portions of the hollow shank of said bolt at opposite sides of said openings being of arcuate shape and of substantially constant thickness throughout, said openings being open at an end of the bolt shank and terminating at their opposite ends in conductor seats, a nut and follower assembly which includes a nut adapted to be screwed externally on the bolt shank and a follower which is adapted to move with the nut when said nut is screwed on the bolt shank within the interior of the bolt shank and inwardly of the opposed openings thereof to clamp a conductor between a portion of said follower and the conductor seats of said openings of the bolt shank, the outer surface of said follower being curved in substantial accordance with the curvature of the inner faces of the arouate wall portions of the shank of said bolt, swivel means for connecting said nut and follower so that the nut may rotate with respect to said follower, and means supported by the bolt shank for guiding said follower for straight line movement relative to said bolt shank while said nut is rotated to screw it on the bolt shank, said means for guiding the follower for straight line movement being in the form of a hook-shaped element adapted to loosely engage a portion of said nut and follower assembly as the nut thereof is removed from the bolt shank to prevent, complete detachment of the nut and follower assembly from the bolt of the connector yet permit the nut and follower assembly to be swung transversely away from the end of said bolt shank at which the openings thereof are open.
7. A connector comprising a bolt having a tubular shank provided with opposed openings formed in the wall thereof and alined transversely of the bolt, said openings being open at an end of the bolt shank and terminating at their opposite ends in conductor seats, a nut and follower assembly which includes a nut adapted to be screwed externally on the bolt shank and a follower in the form of a tubular element which is adapted to move with the nut when said nut is screwed on the bolt shank within the interior of the bolt shank and inwardly of the opposed openings thereof to clamp a conductor between a. portion of said follower and the conductor seats of said openings of the bolt shank, swivel means for connecting said nut and follower so that the nut may rotate with respect to said follower, and means supported by said bolt shank for guiding said follower for straight line movement relative to said bolt shank while the nut is rotated to screw it on the bolt shank, said means for guiding the follower for straight line movement comprising an element which is extended into a slot formed in said follower.
8. A connector comprising a bolt having a tubular shank provided with opposed openings formed in the Wall thereof and alined transversely of the bolt, said openings being open at an end of the bolt shank and terminating at their opposite ends in conductor seats, a nut and follower assembly which includes a nut adapted to be screwed externally on the bolt shank and a follower in the form of a tubular element which is adapted to move with the nut when said nut is screwed on the bolt shank within the interior of the bolt shank and inwardly of the opposed openings thereof to clamp a conductor between a portion of said follower and the conductor seats of said openings of the bolt shank, swivel means for connecting said nut and follower so that the nut may rotate with respect to said follower, and means supported by said bolt shank for guiding said follower for straight line movement relative to said bolt shank while the nut is rotated to screw it on the bolt shank, said means for guiding the follower for straight line movement comprising an element which is extended into a slot formed in said follower and which includes a FREDERICK W. MEBOLD.
US291112A 1939-08-21 1939-08-21 Electrical connector Expired - Lifetime US2221986A (en)

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