US384860A - Conduit - Google Patents

Description

M. MEEHAN.

(No Model.)

GONDUIT.

Patented June 19, 1888.

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distr ct) STATES PATENT OFFICE,

MICHAEL lilEEI-TAN, OF BOSTON, MASYSACHUSETTS.

EPEQIFI JATIGEE forming part of Letters Patent No. 3841-360, dated June 19. 1888.

Application filed June 18, 1857'.

To aZZ whom it may 0075067721.

Be it known that I, hlIClIAEL Mercury, of Boston, in the county of Suffolk and State of Massachusetts, a citizen of the United States, have invented a new and useful Improvement in Conduits, of which the following is a full, clear, and. exact description, reference being had to the accompanying drawings, forming a part of this specification, in explaining its nature.

The object of the invention is to provide a conduit especial adapted for fnrnishii'ig support and rin to pipes for supplying steam or superheated ater, electric light,telephone and telegraph cables, gas pipe, &c. The conduit is made, preferably, in two longitudinal parts or sections, one of which aets as a supper-tier he steam or hot water pipes, and the other of which acts as a cover, and they are made, preferably, ofsand and cement tainped in SlllttlblOlllOlClS and carbonized.

In the drawings, Figure 1 is a view in per spective of my improved conduit. Fig. 2 is view in section thereof. Fig. 3 is a view in perspective of the pipe rest or support. Fig. i is a view in section with the pipe rest and support and pipes in position therein. Fig. 5 is aview in section representing in the cavity of the conduit, in. addition to the pipes, a box for holding electric conductors. Fig. 6 is a view in perspective to which reference is hereinafter made. Fig. 7 is a detail view.

Referring to the drawings, A is the conduit. a is the lower section. It preferably is made with the flat or substantially flat base a, the sides a gradually decreasing in thickness they rise from the base, and the curved inner surface, a, and the upper surface of each side a has a section, a, of a joint, which preferably is shaped as represented in Fig. i. The other section. or cover, (f', is of substantially the same thickness throughout, and is curved from its upper line or section, a, downwardly, as represented in Fig. 1, and thelowersurface of each edge has asectioinn of the jointwhich matches with the sections of the joint on the sides. The cavity .3 of the conduit is prefer ably of a size to carry two large iron supplypipes, C U, (see Fi 1,) and also any desirable number of electric conductors or cables.

The pipes G preferably are supported in Serial No. r'ZiLGU-i. (Xe model.)

the cavitygso to besurrounded by air upon all sides, or practically on all sides, and I employ for holding them in this position inthe cavity, as well as to keep them separated from each other, the support or center pieces, 0, which are placed in the basesection of the conduit at convenient distances apart. These supports or center pieces are curved upon their under surface, 0, to fit the curved upper surface, a of the base, and they have in their upper surfaces curved pipeholding recesses c 0'. (See *igs. l and 3.) These center pieces or supports also act to hold the steam or water pipes in the conduit cavity above the bottom of the conduit or out of reach of any water which may enter the cavity or be formed therein by condensation; and in order that the supports or center pieces, 8, may not act as a barrier to the escape of water from the conduitcavity, I have formed therein holes or passages 0, one of which is arranged at the very lowest point of the support or center piecc,auother of which is formed above the first, and others of which are formed in the surfaces c c for the support of the pipes G G. I would here remark that I do not confine myself to this especial form of support or center piece, but prefer to use one having the essential elements of the one described-th is,one having a firm base adapted to maintain the pipe or pipes substantially centrally in the conduit-cavity and constructed to permit the flow of water along the bottom of the conduitcavity.

represents the cables of a number of electric conductor". They may be located in the passages d in a covered box, d, also made of carbonized cement and sand and placed upon the pipes, or they may be laid in any other convenient part of the pipe.

It will be desirable in certain instances to drain the soil in which the conduit is laid, and for this purpose I use the form of conduit represented in Fig. 1-that is, a conduit having in the base the drain passages or cavities E. (See Fig. 1.) .Vhen the d tun-passages E are not used in laying the conduit, I prefer that the ends be joined together by the lapping of a shoulder upon one into a recess formed in the other, as represented in Fig. 7, and to arrange the covers so as to break joints, and to seal the joints by cement or othersuitable material. When the conduits have the drain passages E, substantially the same construction is utilized for joining the sections, with the exception that the sealed joint does not extend below the upper line of the drain-holes, so that there is left below this seamed joint an opening from the sides ofthe conduit through which water may enter the drain-passages and escape from the soil immediately about the conduit. This constructionisrepresentedinFigs.1and 7.

In making the conduit I prefer to follow substantially the process described in the George Richardson patent application Serial No. 240,595, filed June 8, 1887-that is, each section is built up in molds of cement and sand by tamping and is afterward carbonized. This makes a very strong, durable, and accurately made conduit.

Of course I would not be understood as limiting myself to this particular material, so far as the broad features of the invention are concerned, although I deem it the best for ordinary purposes.

The advantages of the invention arise from the comparative cheapness of the conduit itself and the laying of the same; also, because it provides a solid and substantial air-tight covering from the hot-water or steam pipes contained therein; also, because it provides means for the circulation of air about said pipes, which air acts as ajacket for preventing the escape of heat through the conduit and condensation on the outer surface of the pipe; also, in the construction of the conduit and the location of the steam and hot-water pipes, whereby the conduit acts to drain or carry off the water of condensation, or which may-otherwise enter the same, without bringing it in contact with said pipes.

It will be seen that the top section may be easily removed and the pipe exposed for tap.- ping, repair, or inspection; also, that the pipe may be laid on the earth, concrete, ora plank, and the clamps may be put around the conduit and substructed and fastened by a proper device to resist pressure from any point, if found necessary.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States- 1. The combination, with a molded conduit, of the pipe-supports 0, having concave recesses 0'0, with drainage-openings c in said recesses, substantially as set forth.

2. The combination, with a molded conduit, of the pipe-supports 0, having concave recesses c 0 with drainage openings 0 in said recesses and also below the same, substantially as set forth.

3. The conduit having the cavityB for containing hot-water or steam pipes, electric conductors, &c;, and also provided with one or more drain-passages, E, as and for the purposes specified.

MICHAEL MEEHAN.

In presence of F. F. RAYMOND, 2d, J. M. DOLAN.

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