US1357702A - Vitrified-tile conduit - Google Patents

Description

C. GOTTWALD.

VITRIFIED TILE CONDUIT.

PLICATION FILED 1,357,702. I I PatentedNov. 2,1920.

I MNTTE CHRISTIAN GOTTWALD, OF CLEVELAND, OHIO, ASSIGNOR TO THE RIC-WIT; COMPANY,

' 0F CLEVELAND, OHIO, A CORPURATION 03E OHIO.

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Specification of Letters Tatent.

Patented Nov. 2, 1922 Application filed August 2, 1917. Serial Ito. 184,013.

To all whom it may concern Be it known that T, CHRISTIAN Go'rrwann, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certaln new and useful Improvement in Vitrified-Tile Conduits, of which the following is a full, clear, and exact description.

T his invention relates to vitrified tile conduits adapted particularly for use underground to contain pipes through which steam is carried from a power plant to delivery stations.

The object of the invention is to inexpensively produce a strong, durable, sectional drain-supported vitrified.tile conduit, which shall be relatively inexpensive'because the parts employed are inexpensive in first cost, are not liable to be broken, are not liable to be rendered unfit for use because of inequalities in length due to unequal shrinkage in the kilns, and are adapted to be qulckly and inexpensively assembled to form a strong, durable properly drained conduit.

The invention consists in the construction and combination of parts shown in the drawings as hereinafter described andpointed out definitely in the appended claim.

In the drawing, Figure 1 is a perspective view of a conduit in the process of construction which embodies this invention; Fig. 2 is a longitudinal vertical section of such a conduit; Fig. 3 is a transverse vertical section, and Fig. 4 is an enlarged section through a part of the adjacent end of two base sections showing the holes and dowel pins therein.

The ronduit, as shown, is made up of a plurality of short lower or base sections 20, and short upper root sections 10, which are supported thereby, together with means, substantially as shown and described, for making the joints of the conduit, per 86, water tight. while insuring open joints between the underlying base drain part of the structure; and means to prevent the spreading apart of the lower edges otthe upper sections, whereby said upper sections will more effectively resist the strains, tending to break them, produced by the superimposed earth.

The upper sections 10 are each 1n the form of a semi-cylinder without having the bell-shaped ends which have heretofore been generally if not universally formed on the sectional members of vitrified tile conduits. It is because of the absence from these upper sections of these bell shaped ends that there is less liability that they Wlll be broken in handling or transporting them, and which renders relatively unimportant such variations in size as results from unequal shrinkage.

Each lower or base section 20 is formed with one or more holes 21, through it from end to end. The base therefore comprises the bottom member 23 and the two sides 24 and the top wall 22, which is of substantially semi-cylindrical form, and is disposed with its concave side uppermost. Along the longitudinal edges of the top wall of the hollow base member are horizontal seats 26 adapted for the support of the side edges of the upper conduit sections. Along the outer edges of these seats are the upwardly projecting longitudinally extended flanges 27. The distance between the inner faces of the said flanges on a base section is greater than the external diameter of the upper section, so that when said upper sections are resting with theirconvex sides uppermost upon the said seats 26, the outer edges of said upper members will be inside of but out of contact with said flanges, leaving a gutter 33 between them.

Tn the ends of the lower sections are holes 25 for the reception of the dowel pins 30; and these dowel pins carry washers 31 which may be either loose thereon or formed as parts of the dowel pin, and which lie betiveen the adjacent ends of the lower sections and in contact therewith so as to keep said ends properly separated when the dowel pins are in said holes.

Tn building up a conduit such as is described in a trench which has been dug to hold it, the lower sections are placed in alinement with the dowel pins inthe holes as stated, and with the washers between the ends of said lower sections. This insures open joints between sides and bottoms of the base, so as to permit water to enter the holes therethrough, and be carried away. Tt will be noted that the ends of the top wall of the base sections are beveled back as at 29 to form Vshaped grooves between the adjacent ends.

Tt will likewise be noted that the upper convex surfaces of the upper conduit sections 10 are likewise beveled back at the ends at12 to form V shaped grooves 13 between adjacent upper conduit sections. When lower sections 20 have been placed in proper relation to one another as described cement of proper consistency, or some other filling material, is put into the said V-shaped grooves. Then cement is put upon the seats 26, and then upper sections are put in place, as shown, and preferably so that .the joints between upper sections shall be staggered with respect to joints between two lower "sections. The ti-shaped groove 13 between the two adjacent ends ofthe two upper sections is now filledwith cement or other suitable filling. When the parts have been so placed there will be a gutter 33 on each side of the lower sections between the upwardly extended flanges thereof and the adjacent parts ofthe upper sections. These gutters are to be filledwith cement or other suitable material. When the cement, used as above stated, has hardened it is obvious that the joints between the parts which form the conduit will be water tight. It is likewise clear that the upper section which as before stated, is made of brittle vitrified tile, will be able to carry a heavier load of super imposed earth without breakage, because the cement in the gutters referred to will prevent the spreading apart of the lower edges of said upper members.

ean/0a tions which are of the same cross sectional dimensions and shape at both ends, and a plurality of substantially semicylindrical top sections which are supported on the base sections and are of the same cross sectional dimensions and shape at both ends, each base section having a top wall which is concave on its upper surface except along the edges where said top wall is substantially horizontal to form seats for supporting the top section, and is provided with upstanding longitudinal flan es along the outer edges of said seats and said base sections being disposed in alinement with water admitting spaces between the parts of the ends below said top walls and the ends of said top walls bein rendered water tight by cement joints between them, the lower base sections having in their ends alined holes, dowel pins in said holes to effect and maintain the alinement of said base sections, said semi-cylindrical top sections being ai'rangedin alinement with their longitudinal edges supported on said seats inside of but not in contact with said upstanding flanges, a layer of cement upon each of the above mentioned seats in which the side edges of said top sections are embedded, which cement fills the space between said flanges and the sides of the top members, and cement filling in the joints between the ends of the top members whereby there is produced a water tight upper conduit and below that a drain conduit into which water maiy flow freely.

n testimony whereof I hereunto aflix my signature.

CHRISTIAN 'GOTTWALD.

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