US928265A - Culvert. - Google Patents

Description

G. MAHNEY & F'. A. ROUNDS.

I GULVERT.

APPLICATION HLED sEPT.9. 190B.

` 928,265. Patented July 20, A1909.

@Hannut Q water to fiow free y from one side of the road GILBERT MAHONEY AND FRANK A. ROUNDS, O'FLE ROY, MINNESOTA.

cULvEn'r.

v Specication of Letters atent.

Patented July 20,1909.

Application vfiled September 9, 1908. Serial No. 452,264.

To allwhom it may concern.

Be 1t known that we, GILBERT MAHONEY and FRANK A. RoUNDs, citizens of the United States, residing at Le Roy, in the county o'l' Mower, State of Minnesota., have invented certain new and useful Im rovements in Culverts; and we do hereby declare the followlng to be a full, clear, and exact descri tion of the invention, such as will enab e others skilled in the art to which it appertains to make and use the same.A

This invention relates to culverts and like structures emplo ed in roadways to enable to the other without flooding the same, and

'for similar purposes and lias for its object to improve the construction and'increase the efficiency and utility of devices of lthis charf act-er. A

In the ordinary constructionv of culverts and hke structures the side walls are bound together lmmovably, and .in event of water freezing thereinv the walls are broken by the' eX ausion of the ice.

n the improved device herein shown and described, provrsionvls made 'for the outward movement of the side walls under abnormal pressure, so that dangerof the fracture of the walls is avoided, and 'the integrity' of the culvert insured.` l f The improved device comprises in general a base of cementitious material, spaced side walls formed. of blocks of cementitious mat'erial resting by their lower edges u on the base and` with cap bloc-ks or members 'earin u on the upper edges of the side walls an with shoulders depending therefromv and bearing between the inner '-faees of the side walls at their upper edges, and with a layer of cementitious materialdisposedupon the Y base between ,the side walls and preferably with a concaved u per surface and lbearing against the inner aces of the side-walls at their lower parts,1so'` that inward movement of the side walls under ressure of the earth from the outside. is eectually prevented, while at the same time the outward movef ment of the side Walls under abnormal pressure, such as the severe strains roduced by the expansion of the ice forme Within the culvert-is rovidedfor,'whereby dan er of fracture o the side walls'is revente.: A culvert is thus produced whic may be em- `plo ed in 4very cold climates without'dan'ger of racture from the ice.

' Iny the drawingslillustrati've of the pre tween the u per inner 'same from Within as for instance in eventof water ferredembodiment of the invention, Figure 1 is a perspective View oi' the improved culvert, liig. 2 is a transverse section, and, Fig. 3 is a longitudinal section. Fig. 4 is a sectional detal illustrating a modification in the construction.'

In the drawings, the base of ceinentitious material which is represented at 10 and disposed upon the ground where the culvert is to be erected is preferably oi` greater width than the culvertstructure 4as shown so as to produce the requisite stability and prevent displacement, by the frost, as well as to prevent any settling of the culvert under unusual pressurefrom above caused by the traffic of the road beneath which the culvert is disposed.

The culvert roper is constructed with spaced side wal s and the cap bearing over t le sidewalls, the side walls formed of blocks 11 dis osed end to end, each set of blocks space apart a distance equal to the width of t e culvert, and with their lower ends enlarged laterally 4as at 12 to increase 'the bear ing surface upon the base 1() and correspondingly increase the stability of the structure. The topor ca of the closure is formed of a plurality of b ocks 13 bearing at their edges upon the upper edges of the wallblocks 11 and with depending shoulders 14 bearing beedges of the wall blocks, and t us effectuall preventing in-4 ward movement ofthe wal blocks at their u peredges. The side wall 'blocks 11 and t cca b ocks 13 are preferably arranged so that t eir joints do not come opposlte each other, or wlth the joints breaking as shown in Fig. 1.

Disposed u on the base 10 between the side wall bloc s 11 is a layer of cementitious material 15 with itsupper tace preferably concaved, to forma trough-like configuration at the lower side of the 'culvert to facilitate the passage of the water therethrough. The bottom layer 15 thus bears at its edges upon the inwardly projectin portion of the laterally extending lower e ges-of the wall blocks 11, and materially assists in holding them in their downward osition. By this 'simple arrangement it wil be'obvious that a simply' constructed culvert is roduced which is eiectually prevented rom collapsing by the pressure Without, While atithe time in event of abnormal pressure freezing, Wirtin the culvert, the side walls will soV yield outwardly tosuch pressure, and the fracture of thelblocks 11*13 prevented.

The blocks 11-13 will be formed in suitable molds, either at the point where they are to be employed or at some central oint and shipped to the point Where the cu vert is to be erected and will generally be formed of concrete or like material. The base portion 10 and the bottom layer 15 will generally be' formed where the culvert is to be erected,- the layer 15 being applied before the cap memL begsl, are positloned u on Athe side walls. Tlieblocks 11-13 may be of any required size or thickness according to the locality where the culvert is to be erected, but for an ordinary culvert em loyed beneath an ordinary roadway, the locks will generally be about 18 wide, 4 long and 5 thick with the dependin portion of the cap block about 1" tinck. T e blocks 1].-13 will be reinforced by embedding therein a pluralit of wires represented at 16, which materia y increase the strength and effectually prevent fracture under the severe strains to which the blocks will be subjected.

The structure may be employed for various purposes but as before stated is particularly adapted to the construction of culverts beneath roadways, to provide for the requisite drainage from side to side of the road.

TheA reinforcing wires may be in the form of woven wire fencing material asre resented in Fig. 3, and the wires may be of tile barbed construction as shown in Fig'. 4, or smooth as in Fig. 2 as preferred.

What is claimed, is

1Y A culvert comprising a base portion of cementitious material having a uniformly level upper surface, side walls s aced apart and formed of a 'lurality of bloc of cementitious material earing at their lower edges u on said base, 1cap members formed of b ocks of cementitious material and bearing upon said side wall blocksand with shoulders extend' between the same, and a layer of cementitious material disposed between said side wallA blocks and upon said base with the upper face concaved, and preventing inward movement of the sidewall blocks while leavl ing them free to moveoutwardly upon the level base under abnormal pressure.

2. A culvert comprising a base ortion of cementitious material, side wal apartand formed of a plurality of blocks of cementitious material and with laterally eX- vtended lower edges bearin upon the level topped base, cap members ormed of blocks of cementitious material and bearin said side wall blocks and with shoul ers extending between thesame, and a layer of cementitious material disposed between said side wall blocks and upon the inner portions of said lateral extensions and likewise upon said base and preventin inward movement and locking the side wal blocks against u ward movement whileleaving the said side wall blocks free to move outwardly under abnormal pressure upon the level base.

spaced uponl 3. A culvert comprising a base portion of4 cementitious material having a uniformly level upper surface, side walls s laced apart and formed of a lurality of bloc of cementitious material fiaving reinforcing wires. embedded therein and bearing at their lower edges upon said base, cap members formed of blocks of cementitious material and reinforced by wires embedded therein and bearing upon said side wall blocks and with shoulders extending between the same, and a layer of cementitious material disposed between said side wall blocks and u on said base and with a convex upper sur ace and preventing inward movement -of the side wallI blocks while leav` them free to move outwardly upon the lelifl base under abnormal pressure. i A Y In testimony whereof, we ailix our signatures, in presence of two witnesses.

Witnesses:

E. E. HALL,l W. M. FRANK.v

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