US1484968A - Culvert - Google Patents

Description

Patented Feb. Z6, i924.

JULIUS E. SCHLAFLYLOF CANTON, OHIO, ASSEGNO@ TO THE CANTON CULVERT AND SIL() COMPANY OF CANTON, OHIO, A. CORPORATION F OHIO.

CUL'VERT.

Application filed November 17, 1819. Serial No. 338,491.

T0 all whom t may cof/tecra.'

Be it known that l, JULrUs H. SGHLAFLY, a citizen of the United States, residing at Canton, in the county of Stark and State of Ohio, have invented a new and useful Culvert, of which the following is a speci iication.

The invention relates to improvements in sheet metal culverts of the sectional type and has more especial reference to features o-f construction designed to guard said sections in shipping, erection and use.

The objects of the invention are to pro# vide a culvert the end of which is provided with an integral, annular bead which produce superior strength in the culvert and reinforces the end of the culvert in use where it projects through a bank or the like and is not protected by masonry or other outside protecting means, and to generally improve and simplify corrugated culvert construction.

These objects are attained by first corrugating the sheet from which the culvert is to be formed, then folding the end of the sheet back upon itself and then rolling the folded portion upon a rod or bar to form a reinforcing tubular bead of double thickness upon the end of the culvert and integral therewith, the rod or bar upon which the bead is formed being either removed or left in the bead as desired.

The sheet is then formed into tubular shape in the usual manner, the overlapping edges thereof being connected together in any well known manner to form the finished culvert. rllhe invention thus set forth in general terms is illustrated in the accompanying drawings forming part hereof, in which- Figure l is a longitudinal sectional View through a portion of a corrugated culvert embodying the invention.

Fig. 2 is a side elevation of a portion of corrugated culvert.

Fig. 3 is an enlarged sectional view through the reinforcing bead, and

Fig. 4 is a view similar to Fig. 3, showing the rod within the bead.

A practical embodiment of the invention 50 is disclosed in the accompanying drawings, forming a part of this specification in which similar numerals of reference indica-te corresponding parts throughout the several views.

At 1 is indicated a portion of a culvert,

which may be plain or corrugated or partly plain and partly corrugated, as desired, b-ut circumferentially corrugated culverts are commonly preferred and have so illustrated them. rlhe culvert may be formed of a single corrugated sheet bent into cylindrical form, the edges being `overlapped and connected in any suitable and well known manner or the culvert may be made of two sheets each bent into semi-cylindrical form, the edges being connected together by any usual method.

ylhe sheet from which the culvert is formed is first corrugated inthe usual manner after which the end of the sheet is folded back upon itself for the required distance, forming a reinforced end upon the sheet of a double thickness of the sheet metal. rlhc folded end of the sheet is then bent into U-shape upon a suitable die after which a rod or bar 2 is placed within the bent portion of the sheet and the end of the sheet is bent or rolled upon the rod forming a bead 3 of double thickness upon the end of the sheet. The rod 2 may be left within the bead, to further reinforce the same, as shown in Fig. 4, or it may be removed as shown in Figs. l and 3 thereby leaving a hollow bead.

The contour of the corrugated culvert illustrated presents a series of alternate valleys and ribs 4 and 5 respectively and it will be noted that the culvert terminates in a valley in which the bead 3 is formed, the bead being substituted upon the end of the culvert for a rib and the roll of the be-ad being continued tangent to the connected wall of the culvert.

fter the bead has been thus formed upon the end of the sheet, one end of the bead is out away for a distance corresponding to the overlapped portions of the edges of the sheet, as shown in dotted lines at 6 in Fig. 2, and the sheet is bent or formed into tubular shape, in the usual manner, the longitudinal edges of the sheet being overlapped as shown in dotted lines at 7 in Fig. 2 the overlapped portions being connected together by rivets 8 or their equivalents.

For the purpose of strengthening the bead at the point where the ends thereof are butted together a sheet metal clip 9 is located around the joint in the bead and connected to the culvert upon each side of the joint by means of rivets l0 or the like.

rlhis clip may be substantially U-shaped in the initial form and is placed around the joint in the bead and riveted to the culvert after which` it is bent inwardly against the bead as shown at ll in Fig. 3.

ln forming the bead upon the end of the culvert the folded back portion at the end of the culvert may be of sufficient lengthto allow the rolled back edge of the bead. to rest upon the folded portion, as shown at 12fin Fig.` 4.-, or it may be only longpenough to allori7 the rolled back edge of the beadlto be bent down adjacent to the periphery of the culvert, as shown at 13 in 3.

The strengthening bead thus formed upon the endv of' the culvert produces superior strengthin the culvert, reinforcing the end of the same and preventing bending or other damage to said end in handling and transportation and provides l an integral reinforcement upon the culvert Which protects the exposed end of the culvert which may protrude through a bank or Wall or the like, preventing serious injury to the culvert end Without the necessity of buildingv a masonry reinforcement around the protruding end of the culvert.

This reinforcement isespecially useful inV metal culvert having an` annular. tubular bead at its end formed by rolling plural plies of the metal at the end of the culvert back upon themselves.

3. A circumferentially corrugated sheet end of the culvert baclrupon itself and thenY f vert back upon itselfv andthen rolling the folded portion upon itself.

7. A sheet metal culvert provided upon its end With an integral/tubular bead'formed by folding the metal at the end ofthie cul. vert back upon itself and then rolling.. the folded portion upon a rod.

8. A sheet metal culvert provided at itsl end with an integral annular tubular bead formed of a double thickness'of metal from which the culvert is formedv and a rodi located Within said bead.

JULIUS SCHLAFLY.

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