US1203656A

US1203656A - Metal culvert.

Info

Publication number: US1203656A
Application number: US7603616A
Authority: US
Inventors: William T Shannon
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-02-03
Filing date: 1916-02-03
Publication date: 1916-11-07
Anticipated expiration: 1933-11-07

Description

W. T. SHANNON.

METAL CULVERT.

APPLICATION FILED FEB.3.19I6- Patented Nov. 7, 1916.

WILLIAM T. SHANNON, OF CINCINNATI, OHIO.

"METAL CULVERT.

Specification of Letters Patent.

Patented Nov. '7, 19 5.6.

Application filed February 3, 1916. Serial No. 76,036.

To all whom it may concern Be it known that I, WILLIAM T. SHANNON,

a citizen of the United States of America,

and resident of Cincinnati, county of Hamilton, State of Ohio, have invented certain new and useful Improvements in Metal Culverts, of which the following is a specification.

This invention relates to improvements in metal culverts of the type disclosed in my United States Letters Patent 1071102 and 1071185. In theculvert construction set forth in the first of these patents I have disclosed a construction in which the arched cover plates are corrugated so'that the end corrugations may be overlapped to prevent displacement of the cover plates longitudinally of the culvert and relatively to one another. In the second patent above mentioned I have improved upon the construction set forth in the first mentioned patent in that I have disclosed a construction in which the bottom plates are provided with interlocking tongues and flanges to prevent their displacement longitudinally of the culvert and relatively to'one another, in addltion to disclosing the corrugated interlock- 7 ing construction of the cover plates set forth in the first mentioned patent. Thus in these respective patents I have provided means for preventing relative longitudinal displacement of the cover plates as'well as of the bottom plates.

An object of my present invention 1s to provide means for securely locking the cover plates and the bottom plates together to prevent relative movement between them, as well as to prevent the superimposed ends of the cover plates and the subj acent ends of the bottom plates moving away from the respective cooperating ends of the adjacent cover plates and bottom plates.

A further object is to produce a means for interlocking the elements of a culvert embodying my construction, so that the assembled culvert will be rendered rigid and incapable of falling to. pieces. 7

A further object is to produce a means for securely interlocking the elements of a culvert embodying my construction, in such a manner that the water carrying capacity of the culvert is not impaired.

These and other objects are attained in the improved culvert construction described in the following specification and illustrated in the accompanying drawings in which;

Figure 1 is a fragmental plan view of a culvert embodying my invention, certain parts being broken away to more fully disclose my improved construction, the view being taken at a joint between culvert sections. Fig. 2 is a side elevation of theconstruction disclosed in F ig. l, certain other portions being broken away and shown in section to more fully disclose a culvert embodying my construction. Fig. 3 is a transverse sectional vlew taken on the line 33 of Fig. 1., and disclosing a construction em- I bodying my present invention.

The culvert embodying my improved-construction consists of substantially the same construction as that disclosed in the two above mentioned patents, bottom plates 4 being employed to form the floor of the culvert with corrugated top or cover plates 5 located on the bottom plates and forming the sides and roof ofthe culvert. At each side of the bottom plates the edges are bent downwardly to form longitudinally extending grooves 6 and 7 in which the lower edges 8 and 9 of the corrugated cover plates are located. At one end of each bottom plate 4 is formed a depending flange or tongue 10 which extends transversely of the plate, and at'the opposite end a depending flange or tongue 11 is provided which is bent upwardly upon itself to provide a space 12 for receivii'lg. the flange 10 of the next adjacent plate. beyond the tongue 11 in such a manner that they will cooperate with the grooves 8 and 9 which are extended beyond the opposite end of each adjacent plate to forman overlapping grooved portion 17 at each side of the joint between adjacent, bottom plates. The cover plates 5 are located on top of the bot tom plates, with their lower edges occupying the grooves 6 and 7, and the joint between adjacent cover plates is formed by overlapping the-plates so that at least. one end corrugation of each bottom plate engages with the adjacent end corrugation of the next adjacent plate as shown in Figs. 1 and 2. The superimposed end of each bottom plate and the subjacent end of each cover plate are located. one within the other so that the corrugated edges near the subjacent end of The grooves 8v and 9 are continued each cover plate will occupy the grooves near the superimposed end of each bottom plate and the superimposed end of each cover plate will. occupy the grooves near the subjacent end of each bottom plate. This relation of the plates to one another as above described, occurs at the joints between adjacent plates of each set, the joints between the bottom plates and between the two cover plates occurring at substantially the same place. 7

If the subjacent bottom plate and the superimposed cover plate are now locked together, the superimposed bottom plate and subjacent cover plate will be prevented from being displaced with relation to their adjacent plates. It is a means of locking the subjacent bottom plate and superimposed cover plate together, which forms the chief feature of novelty of my present invention.

In constructing a locking means in accordance with my present invention 1 strike from the outer sides of the grooves 6 and 7 of each bottom plate, lugs 18 and 1a which are bent out of alinement with the outer walls of the grooves so as to project into the grooves. These lugs are formed only on the subj acent ends of the bottom plates and adjacent to the superimposed ends of the cooperating bottom plates, but in a position such that they will be in alinement with the ridge of the last corrugation on the superimposed ends of the cover plates. Cooperating with these lugs and formed on the last corrugation of the superimposed cover plates are looped

lugs

15 and 16 which are struck from the metal of the corrugation in such a manner as to extend beyond the corrugation and into engagement with the lugs 13 and 14. By means of these lugs and loops the subjacent bottom plate and superimposed cover plate as well as the superimposed bottom plate and subjacent cover plate will be securely and rigidly interlocked when the plates are assembled in their proper relation and then pressed together until the loops pass beneath the lugs to allow the lugs to spring back to their distorted positions and to lie against the upper edges of the loops and thus prevent displacement of the plates from one another as shown in Figs. 1 and 2.

It will be seen that in my improved con struction I have formed the lugs and loops on the outside so that the water passing through the culvert will not come into contact therewith. The loops are protected from contact with the water passing through the culvert by reason of the end corrugation of the subjacent end of the cover plate cooperating with the end corrugation of the superimposed end of the cover plate having the loops formed thereon. This positively prevents leakage of water from the culvert.

The flanges or tongues 10 and 11 act to prevent the formation of a flow of water beneath the culvert, which would eventually wash out the earth and undermine the culvert.

Having thus described my invention, what I claim is;

l. A culvert composed of sheet metal sections, each section consisting of an arched cover plate and a substantially fiat bottom plate having longitudinally trough-shaped grooves formed near its longitudinal edges, the grooves of adj aoent bot tom plates overlapping and engaging each other, the arched plates being mounted on the bottom plates with their straight edges located in the grooves, the subjacent end of each bottom plate having lugs extending inwardly and each superimposed end of each arched plate having outwardly extending lugs adapted to lock with the, inwardly extending lugs when the second mentioned lugs are brought beneath them.

2. Ina culvert section, a top member and a bottom member, comprising a substantially flat plate having longitudinally extending top member engaging grooves, and a transversely extending flangeengaging slot formed therein, a flange being formed on the opposite end of each flat bottom plate and adapted to occupy the flange engaging slot of each adjacent bottom plate, and lock ing means formed on the top and bottom members adapted to be engaged to lock the members together when assembled, said locking means consisting of flexible lugs formed on the bottom member and extend ing into the top member engaging grooves, and rigid lugs formed on the top member and adapted to engage the flexible lugs when the members are brought together, whereby the flexible lugs will permit movement of the rigid lugs beyond them and will spring to their normal positions to lock the rigid lugs against Withdrawal.

3. A culvert composed of interlocking bottom plates having longitudinally extending cover plate-receiving grooves formed therein, and arched cover plates mounted on the bottom plates with their longitudinal edges in the grooves, said bottom plates having spring lugs formed thereon and said cover plates having rigid lugs formed there on adapted to lockingly engage one another when the plates are moved to their assembled positions.

4. A culvert composed of interlocking bottom plates having flow-obstructing ribs formed thereon and cover-receiving grooves formed therein, and overlapping arched cover plates mounted on the bottom plates with their longitudinal edges mounted in the grooves, said bottom plates and said cover plates having cooperating lugs formed thereon, adapted to lock the cover plates and bottom plates together, the lugs of one extending r of said sets of plates being spring lugs and the lugs of the other of said sets of plates being rigid.

5. A culvert composed of a series of interlocking sections, each section comprising a bottom plate having cover receiving grooves formed therein, a flange located at one end thereof, and a flange-receiving slot formed in the other end thereof, and a cover plate mounted on the bottom plate and having its edges mounted in the grooves formed in the cover plate, saidcover and bottom plates having cooperating lugs formed thereon adapted to lock the plates together when they are assembled, the lugs of one of said sets of plates being spring lugs and the lugs of the other of said sets of plates being rigid.

6. A culvert composed of sheet metal sec- .with means for engaging the cover, and a second means formed on the cover for engaging the first mentioned means to lock the covers and bottom plates of adjacent sections together.

In testimony whereof, I have hereunto subscribed my name this 1st day of February, 1916.

WILLIAM T. SHANNON.

\Vitnesses;

WALTER F. MURRAY,

THORNTON BOGERT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). G.