US3654952A - Manhole setup for sewer systems - Google Patents

Abstract

A manhole setup is provided for sewer systems which consists of at least two connecting points for an inlet and/or an outlet by means of subsequent pipe connecting adapters, such as clay pipes, Manhole rings are mountable on the manhole setup which are characterized in that the manhole setup and wall parts have vertical subdivision. The wall parts are subdivided in wall segments, each having arch length with graduated radians.

Description

United States Patent Howe et al. [451 Apr. 11, 1972 [54] MANHOLE SETUP FOR SEWER [56] References Cited SYSTEMS UNITED STATES PATENTS 1 Inventors Harald Howe, Ahrstr 40, 5023 2,903,875 9/1959 Bonatz et al ..52/20 hovemch; g g Zaschke, Gobenstr 3,543,453 4/1969 Wright ..137/363 1 Cologne 1, both of Germany 3,562,969 2/1971 Little ..137/363 x [22] Flled: 1970 Primary Examiner-Henry T. Klinksiek [21] App1.No.: 92,409 Attorney-Walter G. Finch [57] ABSTRACT [30] Foreign Application Priority Data A manhole setup [5 PIOVldEd for sewer systems which consists y 26, 1970 Germany 20 25 540-7 of at least two connecting points for an inlet and/or an outlet by means of subsequent pipe connecting adapters, such as clay [52] U.S.Cl. ..l37/363,52/20 pipes, Manhole rings are mountable on the manhole setup [51] Int. Cl ..E02d 29/14 which are characterized in that the manhole setup and wall [58] Field of Search ..137/363; 52/20, 21, 224 pan hav ver ical subdivision. The wall parts are subdivided in wall segments, each having arch length with graduated radians.

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MANHOLE SETUP FOR SEWER SYSTEMS This invention relates generally to sewer systems, and more particularly to a manhole arrangement for sewer systems and the like.

It is well known to design distribution pits for sewer systems by providing a lower manhole setup with a bottom from which depart the connecting points for the inlet and/or outlet. A predetermined number of pit rings is mounted on the setup in order to obtain the desired height of the whole pit. Joints between the individual manhole sections extend horizontally. The angular position of inlet and outlet connecting points with regard to each other is pre-determined from the beginning.

Where another angular position of the connecting points than that of the manhole setup is desired, another manhole setup must be used in which the desired angular position of the connecting points is predetermined from the beginning. The same applies to pipe connections of different diameters.

As a consequence thereof, a great number of manhole setups must be kept on stock, in order to always comply with the prevailing local conditions. The manhole setup as a whole is relatively bulky and heavy calling for corresponding measures in case of transport.

It is an object of this invention, therefore, to provide a manhole arrangement for sewer systems which consists of at least two connecting points for the inlet and/or outlet by means of pipe connecting adapters, as for example, clay pipes.

Still another object of this invention is to provide a manhole setup or arrangement for sewer systems which permits a realization in a most simple manner of any desired angular position of the connecting points for inlet and/or outlet.

The invention is characterized by a manhole setup composed of connecting segments and wall parts with vertical subdivision, the wall parts being subdivided in wall segments of gradual lengths of radians.

Such a design of a manhole setup arrangement makes it possible to produce with very simple means a pit which allows any desired fiow angle at the building site. The obtained flexibility for the provision of connecting points for inlet and/or outlet in the pit under construction is universal.

This is not only true for the provision of connecting segments intended for the inlet, but also for the outlet and for the combination of both types of connecting points, with a variation of clearances of inlets and outlets being possible with the arrangement.

Connecting segments and wall parts are prefabricated parts which may be manufactured in series. It is possible to comply easily with each requirement regarding angular position of inlet and/or outlet at the building site.

Furthermore, transfer and handling of manhole setup parts is essentially facilitated. Weights of piece parts are lower. Besides, it is easier to take a greater collection of manhole setup parts under consideration to the building site than it was before in order to immediately meet with any local condition required.

It is advantageous for the connection segments to form arch pieces made of concrete or the like, in which a socket of stoneware, concrete asbestos-cement cast iron plastics or the like is embedded.

The arch piece is provided with radially limited lateral joint faces. It is most convenient to arrange the socket embedded in the arch piece so as to ensure that it is flush with the inner wall of the arch piece and does not project inwardly. Thus, the clearance of the pit or manhole is by no means narrowed down by the connecting segment.

Wall segments may be subdivided lengths of radians which are selective and graduated between each other. A most advantageous graduation is realized with lengths covering degrees of angles of and 60. With such a graduation, the lowest number of different self-sufficient lengths is possible. It is also possible to provide for manhole setups having bigger diameters, wall segments the arch pieces of which are of a different length with a graduation of each 10.

Wall segments are preferably designed such as to ensure that their outer bow corresponds to the inner bow. This will permit a space-saving possibility of storage, by piling them side by side or one above the other.

Other objects and attendant advantages of this invention will now become more apparent and obvious from the following detailed specification and accompanying drawings in which:

FIGS. 1 to 4 show different embodiments of design and composition or a manhole setup with inlet and outlet, represented in plan view and schematically;

FIG. 5 shows a longitudinal cross section of the manhole setup according to FIG. 3 along line VV; and

FIG. 6 shows a plan view of a special embodiment of wall parts.

Referring now to FIG. 1, a manhole setup 1 is illustrated which consists of two connecting segments 2 of the same diameter for inlet and outlet, and of wall segments 3 as well as 4, 5, and 6.

Connecting segments 2 are made of concrete or the like, having sockets 7 embedded in them, which may consist of stoneware, concrete, asbestos-cement, cast iron, plastics, etc. Concrete bodies 2 are laterally provided in part or completely with radially limited arch pieces 2a.

Sockets 7 are located in the concrete body 2 so that they do not project inwardly at the inner periphery of the concrete body, but they are somewhat reset thus avoiding narrowing down clearance of the manhole.

Wall segments 3 to 6 are arch segments of gradual length, with the wall segments 3 corresponding to an angle of 60 and the wall segments 4, 5, and 6 to angles of 30, 20 and 10, respectively. Connecting segments and wall segments are closely joined at the vertically extending joints 8.

According to the embodiment of the manhole setup of FIG. 2, connecting segments 9 provided have a greater diameter and a length corresponding to an angle of Sockets 10 are embedded in the concrete body of the connecting segments 9 so that they do not project inwardly.

Connecting segments 9 are provided with contact faces 9a being radially limited, so that connecting segments 9 and the correspondingly designed archedwall segments 3, 4, 5 and 6 seen in plan form form a complete circle. Connecting segments 9 may be arranged in any desired angle corresponding to the graduation of the length of the wall segments.

As for manhole setup 12 according to FIG. 3, it exhibits two big connecting segments 9 and a smaller connecting segment 2, the spaces being filled up by fitting wall segments 3, 4, 5 and 6. The smaller connecting segment 2 forms an inlet, the same applies to the bigger connecting segment 9, while the other connecting segment 9 is provided as an outlet.

Manhole setup 13 according to FIG. 4 is fitted with two smaller connecting segments 2 forming inlets, combined with a bigger connecting segment 9 as the outlet. In-between, wall segments 3, 4, 5 and 6 are provided accordingly with corresponding graduation and distribution. There exists, of course, a great number of other possibilities for the combination of connecting segments and wall segments and the arrangement of flow directions with the connecting segments. FIG. 6 shows wall segments 3 designed such that their outer bow 3a corresponds to the inner bow 3b. By this means wall segments may be piled such as to place them side-by-side.

Obviously many modifications and variations of the present invention are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims the invention may be practiced otherwise than as specifically described.

What is claimed is:

1. A manhole setup for sewer systems having at least two connecting points for inlet-and/or outlet by means of subsequent pipe connecting adapters, such as clay pipes, with manhole rings being mountable on the manhole setup, said manhole setup consisting of connecting segments and wall parts with vertical subdivision, said wall parts being subdivided in wall segments having arch length with graduated radians.

4. A manhole setup as recited in claim 1, wherein the outer bow of the wall segments corresponds to the inner bow.

5. A manhole setup as recited in claim 1, wherein the wall and connecting segments are divided in different lengths of radians so that with a minimum of different radians, there exist different angles of connections in graduations of 10 and the like.

Claims (5)

1. A manhole setup for sewer systems having at least two connecting points for inlet and/or outlet by means of subsequent pipe connecting adapters, such as clay pipes, with manhole rings being mountable on the manhole setup, said manhole setup consisting of connecting segments and wall parts with vertical subdivision, said wall parts being subdivided in wall segments having arch length with graduated radians.

2. A manhole setup as recited in claim 1, wherein the connecting segments consist of arch sections of concrete of the like, a socket of stoneware, concrete, asbestos-cement, cast iron, plastics or the like, embedded in said arch sections, with said arch sections having lateral contact faces which are radially limited.

3. A manhole setup as recited in claim 1 wherein each said socket embedded in its respective arch section is flush with the inner wall of the connecting segment.

4. A manhole setup as recited in claim 1, wherein the outer bow of the wall segments corresponds to the inner bow.

5. A manhole setup as recited in claim 1, wherein the wall and connecting segments are divided in different lengths of radians so that with a minimum of different radians, there exist different angles of connections in graduations of 10* and the like.

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