US1955609A - Insulator - Google Patents

Insulator Download PDF

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Publication number
US1955609A
US1955609A US472914A US47291430A US1955609A US 1955609 A US1955609 A US 1955609A US 472914 A US472914 A US 472914A US 47291430 A US47291430 A US 47291430A US 1955609 A US1955609 A US 1955609A
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US
United States
Prior art keywords
insulator
section
sections
conductor
lower section
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
US472914A
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English (en)
Inventor
Davidge H Rowland
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.)
LOCKE INSULATOR Corp
Original Assignee
LOCKE INSULATOR CORP
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 LOCKE INSULATOR CORP filed Critical LOCKE INSULATOR CORP
Priority to US472914A priority Critical patent/US1955609A/en
Priority to FR720046D priority patent/FR720046A/fr
Application granted granted Critical
Publication of US1955609A publication Critical patent/US1955609A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/36—Insulators having evacuated or gas-filled spaces

Definitions

  • the invention relates to insulators and has for its general object the provision of a radio-proof insulator in which there will be the effect of three or more condensers in series, one of which is of such low capacitance as to be capable of carrying most of the voltage under normal line conditions.
  • a more specific object of the invention is to provide an insulator in which the construction is such that there will be the eflect of three or more condensers in series, the inside one, preferably an air space, being of sufiiciently low capacitance to carry most of the voltage so as to relieve the elec tro-static stress on the tie wire connecting the conductor to the insulator, and the supporting pin for the insulator.
  • insulator comprises one or more masses of dielectric material such as porcelain or the like. It is a common practice to provide an insulator of solid construction mounted upon a metal pin and having a groove receiving and supporting a conductor which is held to the insulator by a tie wire engaging about a neck or within a groove on the insulator.
  • Another important object of the invention is to provide an insulator of this type which may be formed in sections which may be cast or plunged and which are subsequently united so as to form, in effect, a homogeneous whole as the parts are subsequently indivisible or inseparable.
  • Another object of the invention is the provision of an insulator having the above mentioned characteristics and which, in addition, is so shaped as to offer the minimum resistance to air currents, thereby making it free from accumulations of dirt and other undesirable foreign matter upon it which might influence its resistance to leakage currents, the shape being moreover such that rain water impinging upon the insulator will wash the surfaces clean even under the most adverse conditions as for example if the insulator be used near cement works and other places where there is a large amount of foreign matter floating in the Cir 1930, Serial No. 472,914
  • An additional object is to provide an insulator having these advantages and which will at the same time be simple and inexpensive to make, just as easy to install as any other, positive in action, efiicient and durable in service, and a general improvement in the art.
  • the figure is a view of an insulator constructed in accordance with my invention, one half being in elevation and the other half in section.
  • the insulator as comprising a hollow porcelain body including a lower section 10 and an upper section 11, both concave-convex in cross section and arranged with their open sides toward each other.
  • these sections may be readily formed by plunging in the usual and well known manner though it is of course conceivable that they may be cast if such is preferred for any reason.
  • the lower section 10 is arranged with its convex side down and this convex surface may be either a portion of a sphere or of compound curved shape, as preferred.
  • the lower section is also formed at its center with an upstanding projection 12 formed with a recess or socket 13 which may be sanded or otherwise roughened in accordance with common practice and which is intended to receive a suitable pin, not shown, which is cemented into the recess and which is for the purpose of supporting the insulator upon a cross arm or other equivalent support.
  • the upper section 11 has its convex side disposed upwardly and it is of greater diameter than the lower section so as to extend beyond the periphery thereof for the purpose of shedding rain or in fact any accumulation of moisture.
  • a ledge or shoulder 14 Spaced inwardly from its edge the upper section is formed with a ledge or shoulder 14 closely abutting upon the corresponding upper edge of the lower section 10.
  • the upper section is formed with a head 15 joined thereto by a constricted neck 16 which provides or defines a groove 17 for the reception of the conventional or any preferred tie wire, clamp or the like for holding the conductor, not shown, in the conductor receiving slot 18 at the top of the head 15.
  • the insulator is mounted upon a pin which is cemented within the recess 13, the conductor is laid in the groove 18 and whatever tie wire is used is engaged with the conductor and disposed within the groove 17.
  • An insulator constructed in this way is particularly advantageous for use as it may be said to be radio-proof, that is to say it will cause no great disturbances such as occur with the ordinary types embodying one or more sections of solid porcelain without any interposed air gap.
  • Another feature of importance is the stream-line shape of the insulator which will insure the surfaces being wetted when rains occur so that there will be no unequal electrical stresses set up and so that the surfaces will be adequately washed off so as to prevent the accumulation of dirt and foreign matter which, in some localities in particular, is highly conductive and leads to excessive leakage over the surface.
  • An insulator comprising a dielectric body including upper and lower sections concave-com vex in cross section arranged with their concave sides toward each other to define an interposed air space, one section being formed for mounting upon a support and the other for attachment to a conductor, the upper section extending outwardly beyond the lower section.
  • An insulator comprising a dielectric body including upper and lower sections concavo-convex in cross section arranged with their concave sides toward each other to define an interposed air space, one section being formed for mounting upon a support and the other for attachment to a conductor, the upper section projecting outwardly and downwardly beyond the upper edge of the lower section, and sealing means about the upper edge of the lower section.
  • An insulator comprising a dielectric body including upper and lower sections concavo-convex in cross section arranged with their concave sides toward each other to definite an interposed air space, one section being formed for mounting upon a support and the other for attachment to a conductor, the upper section having a downwardly and outwardly extending skirt portion projecting beyond the upper edge of the lower section, the inner surface of said skirt portion defining, with the upper edge of the lower section, a groove, and sealing material within said groove.
  • An insulator comprising a pair of sections concavo-convex in cross section arranged with their concave sides toward each other to define an interposed air space, the upper section being formed inwardly of its periphery with a ledge seating conformingly upon the upper edge of the lower section, and being formed for engagement with a conductor and the other having a i refiexly curved portion defining a socket for mounting upon a support.
  • An insulator comprising a pair of sections concavo-convex in cross section arranged with their concave sides toward each other to define an interposed air space, the upper section being formed inwardly of its periphery with a ledge seating conformingly upon the upper edge of the lower section and united thereto whereby both N sections will constitute a homogeneous whole.
  • An insulator comprising a pair of sections seating conformingly upon the upper edge of the lower section and united thereto whereby both sections will constitute a homogeneous whole, one section having means permitting communication between the interior and the atmosphere.
  • An insulator comprising a pair of sections concavo-convex in cross section and arranged with their concave sides toward each other with the periphery of one section extending outwardly beyond that of the other to form a water drip, said sections being secured together at the edge of one.
  • An insulator comprising a pair of sections concave-convex in cross section and arranged with their concave sides toward each other with the periphery of one section extending outwardly beyond that of the other to form a water drip, said sections being secured together at the edge of one, one section having an inwardly extending projection with a recess therein for engagement upon a supporting pin and the other having a transversely grooved conductor supporting head joined thereto by a constricted neck.
  • An insulator comprising upper and lower sections concavo-convex in cross section arranged with their concave sides toward each other to define an included air space, the upper section being of greater diameter than the lower to project outwardly beyond the same and being formed with a ledge united to the edge of the lower section, the lower section having means for engagement upon a support and the upper section having means for supporting a conductor.
  • An insulator comprising upper and lower sections concavo-convex in cross section arranged with their concave sides toward each other to define an included air space, the upper section being of greater diameter than the lower to pro- J'ect outwardly beyond the same and being formed with a ledge united to the edge of the lower section, the lower section having means for engagement upon a support and the upper section having means for supporting a conductor, the lower section further having a circumferential series of holes therein establishing communication between the air space and the atmosphere.
  • An insulator comprising upper and lower sections concavo-convex in cross section arranged with their concave sides toward each other to define an included air space, the upper section being of greater diameter than the lower to project outwardly beyond the same and being formed with a ledge united to the edge of the lower section, the lower section having means for engagement upon a support and the upper section having means for supporting a conductor, the lower section further having a circumferential series of holes therein establishing communication between the air space and the atmosphere, said holes being inclined upwardly toward the axis of the insulator to prevent entrance of water.

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  • Insulators (AREA)
US472914A 1930-08-04 1930-08-04 Insulator Expired - Lifetime US1955609A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US472914A US1955609A (en) 1930-08-04 1930-08-04 Insulator
FR720046D FR720046A (fr) 1930-08-04 1931-07-16 Perfectionnements apportés aux isolateurs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US472914A US1955609A (en) 1930-08-04 1930-08-04 Insulator

Publications (1)

Publication Number Publication Date
US1955609A true US1955609A (en) 1934-04-17

Family

ID=23877405

Family Applications (1)

Application Number Title Priority Date Filing Date
US472914A Expired - Lifetime US1955609A (en) 1930-08-04 1930-08-04 Insulator

Country Status (2)

Country Link
US (1) US1955609A (fr)
FR (1) FR720046A (fr)

Also Published As

Publication number Publication date
FR720046A (fr) 1932-02-15

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