US3021501A - Removable insulating base for a metallic junction block for cables - Google Patents

Removable insulating base for a metallic junction block for cables Download PDF

Info

Publication number
US3021501A
US3021501A US75839A US7583960A US3021501A US 3021501 A US3021501 A US 3021501A US 75839 A US75839 A US 75839A US 7583960 A US7583960 A US 7583960A US 3021501 A US3021501 A US 3021501A
Authority
US
United States
Prior art keywords
block
junction block
metallic
cables
screws
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
Application number
US75839A
Other languages
English (en)
Inventor
Blanchet Lucien
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3021501A publication Critical patent/US3021501A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting

Definitions

  • the present invention relates to a base made of a molded insulating material which may be a superpolyamide of the nylon type, such as the material sold in France under the trademark Rilson.
  • a base made of a molded insulating material which may be a superpolyamide of the nylon type, such as the material sold in France under the trademark Rilson.
  • This may be snapped onto a common support in the form of a rail, said base likewise comprising a thin vertical plate serving as an intercalary partition between adjacent bases, and projections onto which a cover can be snapped, said base being adapted to receive a metallic junction block provided with two wire clamps, this new base being characterized by the fact that the metallic junction block is held transversely between three members made of molded insulating material projecting out from said thin vertical plate the lower member serving to enable the base to be snapped onto the common support, and the two upper members each being provided with grooves for holding an indicating label.
  • Another characteristic of the present invention relates to the means for immobilizing the metallic junction block a ainst longitudinal movement with respect to its base. This immobilization is assured by means of the same members which serve to bring pressure against the ends of the cables, or to attach shunts connecting the metallic blocks carried by adjacent bases.
  • the metallic block carries for this purpose, in addition to the two bores through which the ends of the cables pass and the three tapped holes which cooperate respectively either with the clamping screws or the shunt attaching screw, two circular bores which receive two cylindrical insulating plugs which are parallel to the common supporting rail, and of the same length as the three aforesaid projections, the diameter and position of these plugs being so chosen that when the clamping screws are tightened, the threads of these screws cut a passage through the somewhat elastic insulating material of which the cylindrical plugs are made.
  • It may also comprise two grooves which cooperate with tongues on the two upper members, which serve as label holders, these grooves being so positioned that the clamping screws cut into the insulating material of these two upper members.
  • the screws for connecting a shunt should also make a passageway for themselves by tapping the insulating material of said two cylindrical plugs.
  • This frictional gripping prevents the screws from working loose when subjected to vibrations, and at the same time insures that the metallic block is immobilized with respect to the insulating base so as to prevent movement in a longitudinal direction parallel to the common supporting rail.
  • the shunt screw When a shunt is attached, the shunt screw likewise serves two purposes, i.e., it cooperates in the immobilization of the metallic block against longitudinal movement with respect to its base, and it also attaches a shunt connecting the metallic junction blocks carried by two adjacent bases, the contact with the somewhat elastic insulating material of the two cylindrical plugs serving to restrain any turning of the shunt attaching screw.
  • FIG. 1 is a perspective view showing a base made of insulating material in accordance with the present invention, equipped with a metallic junction block;
  • FIG. 2 is a central transverse cross-section taken through the axes of the screws for clamping the cables.
  • the terminal support mounted on the common rails 1 comprises a thin portion 2 which serves as an intermediate partition between adjacent blocks, a base 3 provided with depending projections 24 adapted to snap onto said rail, and two side members 4 and 5 which serve both as a label holder and as means for holding the metallic junction block against transverse movement.
  • the block 6 comprises two bores 7 in its lower part, only one of which bores is visible on FIG. 1.
  • the bare, ends of the cables 8 which are to be connected to the block 6 extend into these bores.
  • the upper part of the thin plate 2 is provided with two protuberances 9 and 10 designed to cooperate with mating snap attaching means on a protective cover for a group of contiguous blocks.
  • the screws 11 and 12 which serve to exert a pressure on the metallic ferrules of cables 8 are preferably of the type having a head in the form of a hexagonal socket, as shown in particular at 13 on FIG. 2. They also preferably comprise at their lower ends a small central hollow 14, instead of ending in a point, so that these screws bear on the metallic ferrules of the cables 8, along a circular line of contact.
  • the members 4 and 5 are provided with grooves 15 for holding labels.
  • the block 6 is held in place by means of two cylindrical plugs 16 and 17 of a length equal to the thickness of the metallic junction block. These plugs are seated in bores provided for this purpose in the junction block 6.
  • the members 4 and 5 each comprise an inwardly extending portion, such as the tongue 18, which projects into the bore in the metallic junction block 6.
  • the screw 12 is shown in FIG. 2 before its introduction into the tapped hole 19 in the metallic junction block 6, so that it is easy to understand that this screw 12 can be tightened down on the end of a cable only after abrading a path for itself through the insulating material of one of the tongues 18 and the cylindrical plug 17.
  • the screw 11 which is shown in its lower position, has acted as a tap and extended the tapping 19 in the junction block 6 to parts 4 and 16 as shown at 20 and 21.
  • the penetration of the screws 11 and 12 into the insulating material of the tongues 18 and plugs 16 and 17 also insures that the junction block, 6 is prevented from moving longitudinally with respect to its support and kept in contact with the portion 2 of this support which serves as an intercalary partition.
  • the arrangement of the label holding means 4 and 5 may be differentand that the tongue 18 may be replaced by a projecting shoulder extending, for example, to the upper part of the block 6.
  • a metallic junction block of the type provided with sockets for receiving the ends of con- 4. ductors and threaded passageways intersecting said sockets, said passageways being adapted to receive screws for clamping the ends. of said conductors to said block, and an insulating support for said block, said support being made of a resilient insulating material and comprising a vertical plate dimensioned to shield one side of said block and a plurality of projections extending from one side of said plate, said junction block being provided with openings mating with and receiving said projections, the peripheries of said openings intersecting the peripheries of said threaded passageways, so that when screws are screwed into said passageways, the threads thereon cut into said projections and the resilient material thereof frictionally grips said screws, so as to resist withdrawal of either said screws or said projections from said block.
  • said block comprises an additional threaded passageway adapted to receive a screw for connecting a shunt, said additional passageway being positioned intermediate the passageways intersecting said sockets and the periphery of two of said openings intersecting the per-iphery of said additional passageway as well as that of a threaded passageway intersectinga socket, so that the projections in said last mentioned openings are squeezed between the screws in said additional passageway and in the passageways intersecting the socket.
  • junction block and support as claimed in claim 1 in which said support comprises at least one projection 7 References Cited in the file of this patent .UNITED STATES PATENTS- Keller May 3, 1955

Landscapes

  • Supports For Pipes And Cables (AREA)
US75839A 1959-12-21 1960-12-14 Removable insulating base for a metallic junction block for cables Expired - Lifetime US3021501A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR813745A FR1252725A (fr) 1959-12-21 1959-12-21 Socle isolant amovible perfectionné support de bloc métallique de jonction pour câbles

Publications (1)

Publication Number Publication Date
US3021501A true US3021501A (en) 1962-02-13

Family

ID=8722870

Family Applications (1)

Application Number Title Priority Date Filing Date
US75839A Expired - Lifetime US3021501A (en) 1959-12-21 1960-12-14 Removable insulating base for a metallic junction block for cables

Country Status (3)

Country Link
US (1) US3021501A (fr)
BE (1) BE600032Q (fr)
FR (1) FR1252725A (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3143214A (en) * 1963-08-01 1964-08-04 Stahlin Brothers Fibre Works I Object mounting assembly
US3157453A (en) * 1961-06-19 1964-11-17 Lanczi Leslie Emil Electric terminal block with mounting rail
US3201747A (en) * 1965-08-17 Method for crimping wet spun cellulose triacetate
US3236975A (en) * 1961-11-24 1966-02-22 Allen Bradley Co Removable segment, track-mounted terminal block
US4088829A (en) * 1976-07-15 1978-05-09 Arrow-Hart (Europe) Limited Housing for electrical components
USD349274S (en) 1992-04-14 1994-08-02 Rosemount Inc. Clip for mounting electrical equipment on a rail
US6093050A (en) * 1991-10-11 2000-07-25 Baum; Thomas Matthew Telecommunications terminal block
US6302723B1 (en) 1991-10-11 2001-10-16 Tyco Electronics Corporation Telecommunications terminal block
FR2848344A1 (fr) * 2002-12-05 2004-06-11 Seifel Dispositif de raccordement permettant une maintenance aisee et un montage dans un espace reduit
USD915283S1 (en) * 2018-03-19 2021-04-06 Richard Steininger Protection board
USD915282S1 (en) * 2018-03-19 2021-04-06 Richard Steininger Protection board

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707774A (en) * 1950-03-05 1955-05-03 Keller Bernhard Terminal blocks

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707774A (en) * 1950-03-05 1955-05-03 Keller Bernhard Terminal blocks

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3201747A (en) * 1965-08-17 Method for crimping wet spun cellulose triacetate
US3157453A (en) * 1961-06-19 1964-11-17 Lanczi Leslie Emil Electric terminal block with mounting rail
US3236975A (en) * 1961-11-24 1966-02-22 Allen Bradley Co Removable segment, track-mounted terminal block
US3143214A (en) * 1963-08-01 1964-08-04 Stahlin Brothers Fibre Works I Object mounting assembly
US4088829A (en) * 1976-07-15 1978-05-09 Arrow-Hart (Europe) Limited Housing for electrical components
US6093050A (en) * 1991-10-11 2000-07-25 Baum; Thomas Matthew Telecommunications terminal block
US6302723B1 (en) 1991-10-11 2001-10-16 Tyco Electronics Corporation Telecommunications terminal block
USD349274S (en) 1992-04-14 1994-08-02 Rosemount Inc. Clip for mounting electrical equipment on a rail
FR2848344A1 (fr) * 2002-12-05 2004-06-11 Seifel Dispositif de raccordement permettant une maintenance aisee et un montage dans un espace reduit
USD915283S1 (en) * 2018-03-19 2021-04-06 Richard Steininger Protection board
USD915282S1 (en) * 2018-03-19 2021-04-06 Richard Steininger Protection board

Also Published As

Publication number Publication date
FR1252725A (fr) 1961-02-03
BE600032Q (fr) 1961-05-29

Similar Documents

Publication Publication Date Title
US3021501A (en) Removable insulating base for a metallic junction block for cables
US2961479A (en) Mid span spacer and service tap assembly
US2725544A (en) Electrical terminal clip
JPS62259361A (ja) ケ−ブル端子コネクタ
ES8800797A1 (es) Unidad de conexion (de montar terminales) de cables de telecomunicacion, de transmision de senales de mando o similares.
MY103449A (en) Electrical cable-making apparatus
ES287076U (es) Un conectador electrico de blindaje de cable
US2707774A (en) Terminal blocks
US2440748A (en) Lightning arrestor for television transmission lines, etc.
US4162819A (en) Electrical terminal
US2899160A (en) Electric cable clamp
JPH0140478B2 (fr)
US2950457A (en) Electrical outlet device
US4834671A (en) Device for connecting electrical cables
US2958068A (en) Wire attachment means for electrical terminals
US2984818A (en) Terminal lugs
US2461135A (en) Electric wire terminal
US2525123A (en) Electric wire connecting clamp
GB2323221A (en) Electrical connectors and connecting parts therefor
US2094404A (en) Solderless connecter
US2929861A (en) Junction assembly for secondary terminal take-offs
US2515603A (en) Two-part cable-clamping insulator and holder
GB984142A (en) Electrical connector
US2414422A (en) Cartridge-fuse receptacle with terminal clamping means
US2108504A (en) Electrical cable connecter