US831168A - Insulator. - Google Patents

Description

A 110.831,168. PATENTBD SEPT.18, 1906.

A, .1. L. LEMBBGK.

INSULATOR.

APPLICATION FILED .2" 1904. x L A w o' fx am .af/@i5 tions.

UNITD STATES PATENT OFFICE.

AnrI-IUII J. L. LEMBEOII, or sIOUx OITY, IOWA, AssIeNoR or ONE-HALF ro JOHN P. WALL, or sIoUx OITY, IOWA.

INSULATOR.

Specification of Letters Patent.

v Patented Sept. 18` 1906.

Application filed November 26,1904. Serial No. 234.412.

To all whom `t mfc/y concern:

Be it known that I, ARTHUR J. L. LEM- nnoic, a citizen oi the United States, residing at Sioux City, in the county of Woodbury and State oi Iowa, have invented new and useful Improvements in Insulators, of which the following is a speci'lication.

This linvention relates to insulators for use in connecting up call and fire-alarm boxes, electric lights, &c., to line-wires, and particularly pertains to what may be termed a drop-insulator, whereby the connection between the 'main line and the call and firealarm box, electric light, or the like may be established without imposing a strain on the line-wire or requiring when a test of the connected apparatus is desired to detach any part of the main line or the connecting linewires, and thus permit the necessary tension on said wires to remain undisturbed with obvious advantages in repair-work, as 'well as in primary assemblage of the said connec- The improved insulator is constructed in two forms, one having a single skirt or petticoat with two heads in planes at right angles to each other and the other having a double skirt or petticoat with two heads lin planes at right angles to each other.

A 'further object in the use of the dropinsulator is that it can be a A plied at one operation to the cross-arm o' a pole, post, or other analogous device and by such action is rendered both economical in structure and labor-saving in application with respect to the old device, wherein a lineman is required to individually secure insulators to a crossarm or similar device, and a number of knobs mustnecessarily be used to accommodate the connections required in setting up an assembled relation with respect to the main-line wire.

In the drawings, Figure l is an elevation of a portion of a main line with drop-wires leading to a call-box and showing the application thereto of the improved insulator. Fig. 2 is a detail elevation, on an enlarged scale, of the simplified 'form of the insulator.l Fig. 3 is a vertical section through the insulator shown by Fig. 2. Fig. 4 is a vertical sectional view of the other form oi insulator having the double skirt or petticoat.

Similar characters oi reference are employed to indicate corresponding parts in the several views.

Referring to Figs. 1, 2, and 3 of the drawings, l indicates a main head having a circumferential groove 2 and a skirt or petticoat 3, a screw-threaded socket 4 being formed in the skirt or petticoat oi' the usual gage to iit over pins now commonly used on cross-arms or other supporting parts of poles and like devices to which insulators are applied. In the simplied form of the insulator, or that used for low-voltage connections, a knob 5 is secured to an intermediate portion of the skirt or petticoat 3 and has a circumferential groove 6, said knob Storming a secondary head, which is disposed in a plane at right angles to the main head l. This secondary head is preferably of less diameter than the main head and located tar Venough below the groove 2 as to avoid the least interference with the attachment of the mainline wire to the main head or the application of' the drop-wire, which will be more fully hereinafter' referred to, to the secondary head.

In the form shown in Fig. 4 the construction is the same as that shown in Figs. l, 2, and 3, with the exception that a double skirt or petticoat is provided, one of the skirts or petticoats being indicated by the reference character 7 and the other by the reference character S. Otherwise than that, as stated, the insulator shown in Fig. 4 is constructed the same as that shown in Figs. 1,2, and 3, the same reference characters being applied thereto.

' Both forms of the device are intended to be constructed of glass, porcelain, or other suitable yinsulating material, and the main advantage derived from the specific construction set Vforth is that both the attaching elements, or those parts to which connections are secured, and the main body or element comprising the skirt or petticoat or skirts or petticoats and head 1, are simultaneously applicable to a single pin on an arm or analogous device to dispose the insulator as an entirety in either form in operative position. The essential feature of the improved insulator is the disposition of two attaching elements or members in planes at right angles to each other, the upright member, including the skirt or petticoat or skirts or petticoats and head l, having the end of the line-wire secured thereto and remaining dead, and the other attaching element or member, including IOO the knob 5, receives the connecting or drop wire for the call-box, electric-light, fire-alarm or other apparatus, as clearly shown by Fig. l. In the preferred arrangement of the insulators on an arm between the line, which is designated by A, and the call-box or other apparatus B the connections or drop-wires C between said call-box or other apparatus are attached to the horizontal elements or members of the insulators and the line-wire terminals are secured to the heads 1, two of the insulators being used and spaced apart a sufficient distance and the circuit continued between the connections C and the line-wire ruiming to and leading away from the respective insulators by leaving a sufficient length of the said connections after attachment to the horizontal elements or members and terminally attaching said lengths to the mainline wires. In the arrangement of the insulators on the arm D, adapted for their support and held by a pole or standard E, as shown, the horizontal elements or members of the insulators are projected outwardly for convenience in attachment thereto of the connections C. In the event that it is desired to test the apparatus connected to the line, such as the call-box B, it is unnecessary to disturb the main iine or the attached terminals of the connections C with respect to the main line, as the call-box or other device may be thrown out of circuit by detaching the lower terminals of the connections C. After the test has been completed the callbox or other device may be readily thrown into the main line or in circuit with the latter by reattaching thelower terminals of the connections C.

From the foregoing it will be apparent that the tension of the main-line wire remains constant and is not in the least disturbed during the assemblage of apparatus in operative relation thereto or in disconnecting said apparatus.

A further advantage in the improved insulator construction is that the expense of using a number of auxiliary knobs or insuating devices is obviated.

It will also be understood that changes in the proportions and dimensions of the several parts of the insulator may be resorted to without departing from the spirit of the invention.

Having thus described the invention, what is claimed as new isl. An insulator having two integrally-connected members of different dimensions arranged in planes at right angles to each other to receive wire terminals also having an angular relation to each other, the insulator as an entirety being composed of non-conducting material.

2. An insulator having two integrally-connected members arranged in planes at right angles to each other, a line-wire and connections attached to the respective members, the connections being continued from a partof the members to the line-wire but independently separable with respect to the latter and the said members, and an electrical apparatus to which said connections lead.

3. An insulator having two integrally-connected members of different dimensions disposed in planes at right angles to each other, both members being provided with grooved terminals and simultaneously applicable to a supporting means, the smaller member projecting outwardly from the side of the body of the larger member.

4t. An insulator having two integrally-connected members of different dimensions disposed in planes at right angles to each other', the two members being simultaneously applicable to a supporting means and adapted to be held in secured position by a single pin,

5. A supporting means having insulators thereon spaced apart from each other, each insulator consisting of two members directly connected and disposed in planes at right angles to each other, combined with main-line terminals connected to the upright members of the insulators, and connections for an electrical apparatus engaging the horizontal members and also separably attached to the main line.

6. The combination with a supportingarm, of insulators secured thereon in opposite directions, cach of the insulators consisting of two integrally-connected members arranged in planes at right angles to each other and of different dimensions, the smaller member projecting outwardly from the larger member, a line-wire having the terminals thereof attached to the larger members of the opposite insulators, connections attached to the smaller outwardly-projecting members and continued to the line-wire but independently separable with respect to the latter and said members, and an electrical apparatus to which said connections lead.

7 An insulator having arms presented at an angle to each other, each of said arms having a circumferential groove to receive conducting-wires, and one of said arms having an opening to receive a support for the insulator.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

ARTHUR J. L. LEMBECK.

Titnesses A. J. PnUvor, JOHN l?. W'ALL.

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