US358609A - Electric conduit - Google Patents

Description

(No Model.)

R. L.-HARRIS.

ELECTRIC (JONDUIT.

No. 358,609. Patented Mar. 1, 1887.

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ROBERT L. HARRIS, OF BROOKLYN, NEW YORK.

ELECTRIC CONDU IT.

EPECIFICATION forming part of Letters Patent No. 358,609, dated March 1, 1887.. A: plication filed November 23, 1586. Serial No. 219,560. (No model.)

To aZZ whom it may concern:

Be it known that 1, ROBERT L. HARRIS, of Brooklyn, in the county of Kings and State of New York, have invented an Improvement in Electric Conduits, of which the following is a specification.

In Letters Patent No. 344,962, granted to me July 6, 1886, a trunk or conduit is shown containing the electric conductors with which a pendant-arm is in contact.

I find it important to construct these conduits in such a manner as to give easy access for repairs or additions to the conductors,and so that the conduitfirmlyresist-s the compress ing action of the pavement and of frost, in order that the opening or slot at the top of the conduit may remain uniform, and so that the pavement may not be disturbed in obtaining access to the conductors. I make useof two covering bars upon supports that form a trough that is buried beneath the pavement, the covering-bars coinciding with the surface of the pavement, or nearly so, so that access is given to the conductors within the conduit by removing one of the covering-bars, and the conduit is adapted to the reception of electric conductors for the motor upon the ear, and also for the reception of telegraph, telephone, or electric-light wires, if desired.

In the drawings, Figure 1 is a erosssection of my improved conduit. Fig. 2 is a longitudinal view, partially in section, illustrating my improvement. Fig. 3 is a sectional plan at the line a; as, Fig. 2; and Fig. i is a crosssection of a modification.

The portion of my conduit which is buried is composed of a base, 0, of suitable strength, having diverging longitudinal plates or sup ports V, which I term the may" or supports, and a second set of supports A, which I term the minor supports. These major and minor supports crossing each other form X-shaped longitudinal sides to the conduit, and upon the top edges of these supports A V are the coveringbars D E, the edges of which are preferably formed with downwardly-projeeting flanges, inclined toward each other, so as to set over and hook upon the top edges of the supports A V, and these covering-bars are secured in place by wedges 3,0r by any other suitable device, such as clamping screws. These covering-bars may be used as tramways,

or one of such bars may be thickened to form a railway-rail, as shown by dotted lines at 10, and the flanges of the wheels may run, if desired, in the groove between the two coveringbars D E, and the bar or arm that forms the conductor from the stationary conductors Rte the motor on the car will pass down through the slot between the coveringbars, as shown by dotted lines at 11. These conductors R are preferably of copper or phosphor-bronze, and connected to the bars J of the minor supports, and insulated in any suitable manner; or such conductor or conductors may be attached upon the cross-bar T between the major supports V.

It is preferable to make the conduit having the base 0, and the major and minor supports in sections of suitable length, and these may be of castiron or other suitable material, and they are not set closely together at the ends, so that they are free to expand, but fillingplates \V,of sheet metal or other suitable material,lie against the outer surfaces of the conduit, and said sections and plates may be surrounded by concrete on the bottom and sides, as at K, or the concrete alone may be used. Suitable connections to a sewer or drain-pipe are to be made, and these are preferably taken away between one section and the next, as at Q, so as to prevent the accumulation of water in the conduit; or the connection to the sewer may be at one side, as shown by dot-ted lines in Fig. 1.

It will be apparent that there are four chain bers, G H L M, in the X-shaped sides of the conduit. Oneormoreofthesemayreceivetelephone electriclight, or other wires or pneumatic tubes, and to facilitate the insertion of the wires into the chambers G II openings or handh0les are provided at P, through which the conductors maybe passed, and these are preferably covered by plates N. The floor or supports 0 sustain the conductors within the chambers G H, and allow space for the escape of any water that may accumulate in the bot tom of said chambers.

It will be apparent that either covering-bar D or E may be lifted off without disturbing the other covering-bar, so that access is given to the interior of the conduit for repairing the conductors or introducing or removin con.-

ductors.

In cases where the pavement only comes to one side of the conduit the opposite side of the conduit may be dispensed with,if the conductors are not to be inclosed. This may be used where required with railways where the conduit is at one side of the track.

I do not limit myself'to the material out of which the conduit is made, or to the manner of supporting the electric conductors.

When desired,the major supports V may be made as solid plates cast or formed with the base O,without the openings P and diverging, as aforesaid, and to aid in supporting these there may be external ribs or brace-bars as the bottom portions of the minor supports A, as shown by dotted lines 12.

In cases where it is desired to have the bar E narrow, said bar may rest directly upon the minor support, said support being in the form of a plate,with diagonal anchors S,if required, passing off into the concrete,as shown in Fig.4.

I claim as my invention 1. A conduit for electric conductors, composed of plates forming the major and minor supports, crossing each other, and the baseplate for such supports formed in one or permanently connected together, in combination with the cov ering-bars resting upon the upper edges of the major and minor supports, substantially as set forth.

2. The combination, in a conduit for electric conductors,of the major supports V,the minor supports A, crossing each other in X form, the covering-bars resting upon the top edges of the major and minor supports, and insulated electric conductors R, connected with the minor supports, substantially as set forth.

3. The combination, in a conduit for electric conductors, of two X-shaped supports, abase connecting the same, covering-bars secured upon the upper edges of the X-shaped supports, electric conductors within the conduit,

and longitudinal chambers for the reception ROBERT L. HARRIS.

Witnesses:

GEO. '1. PINOKNEY, WILLIAM G. Mom.

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