US517345A - Subterranean conduit - Google Patents

Description

(No Model.)

F. LANG.

SUBTERRANEAN GONDUIT.

No. 517,345. Patented Mar. 27, 1894.

8 f b r x U H H W. 4 m

WITNESSES. I INVENTOR,

ATT NE).

UNITED STATES PATENT OFFICE.

FRIEDRICH LANG, OF CLEVELAND, OHIO.

SUBTERRANEAN CONDUIT.

SPECIFICATION forming part of Letters Patent No. 517,345, dated March 27,1894.

Application filed May 29, 1893. Serial No.475,884. (No model.)

To all whom it may concern:

Be it known that I, FRIEDRICH LANG, a citizen of the United States, and a resident of Cleveland, in the county of Cuyahoga and State of Ohio, have invented a new and 1m proved Subterranean Conduit; and I do hereby declare that the following is a complete, true, and exact description thereof.

My invention relates to subterranean conduits generally and the improvement consists in the application and mounting of specially prepared material for said purpose.

The object of my improvement is not only to facilitate the construction of said conduits but also and more particularly so to attain results which answer the sanitary requirements when the structure is to serve as a sewer.

That my improvement may be fully understood and seen, reference will be had to the following specification and the accompanying drawings, in which- Figurel represents a partial plan View of a structure above referred to. Fig. 2 is a cross section of the same and Fig. 3 is a longitudi nal side View.

Like letters of reference denote like parts in the drawings and specification.

In the plan View Fig. 1 only the lower portion of the conduit is shown,AA being shells which rest upon piers B see Figs. 2 and 3.

Said piers serve as foundation and are erected according to the grade line essential for the conduit set thereon. Either stone or concrete material may be used for this foundation. Excavations being done and piers laid, but comparatively short time is required for mounting the conduit. The shells A A are arranged in line and all the crevices aformed by the adjoining ends are filled with plastic binding material, simultaneously with this operation a coating is also given to the faces I), which renders the understructure ready to receive the covers or crown pieces C. The covers in turn are also filled as seen at c and the conduit is ready to serve for the purpose intended A sewer so built or composed of parts as above described remains perfectly smooth on the inside in so far as the cementing is confined within the crevices or neither will the jointed covers permit of the cement to reach and deface the interior. Sewers of very large profile are built of more than two parts, side pieces may be interposed between the bottom shells and covers, the sealing of joints being done in the same manner as described. The material being dried before insertion will in that state not be affected by the corroding influence of the surrounding earth. Sewers being egg shaped as shown represent a diminished frictional surface for low levels, drainage is thereby promoted, furthermore the interior being entirely smooth accumulations of sediment and decomposing matter can not exist, hence theabsence of health destroying odors or the so called sewer gas.

The building material, that is the sectional parts, of which the sewer is to be composed I have described and claimed in a separate application for Letters Patent.

I claim- A subterranean conduit consisting of a series of upper and lower longitudinal pieces curved in cross-section and placed one above the other to form a conduit, the upper ones over-lapping the joints of those below, the adjacent longitudinal edges of each piece having respectively grooves and projections extending from end to end thereof and resting one within the other, and the adjacent transverse edge of each piece provided with registering grooves to receive cement, substantially as shown and described.

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

FRIEDRICH LANG.

Witnesses:

JACOB LANG, GOTTFRIED TELL.

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