US1918678A - Automatic sewer flusher - Google Patents

Description

July 18, 1933. H WIRZ, JR 1,918,678

AUT OMAT I C SEWER FLUSHER Filed Dec, 2l, 1931 Fi g'. .L

:s '27 sz :MJ-2 3'* INVENTOR. HERMHN W/Rz r/z.

ATTORN Y.

Patented July 18V, 1933 :UNITED sTA'rrijs PATENT OFFICE` HERMAN wmz, Jn., oELos ANGELES, CALIFORNIA, AssIGNon or roR'rY-NINE ONE- VIi'UNnnE-nmns' 'ro CHARLES E. HLAvA'rY, oF Los ANGELES, CALIFORNIA `AU'roiuAtrJIo SEWER FLUSHER Application filed yDecember-'21, 1931. Serial No. 582,272.

ylhis.invention relates to improvements in The intercommunicating portion 26 is prosewer flushers. r

The generalobgect of the invention is to provide an improved automatic device for iiushing main sewers with fresh water.

Another object of the invention is to. provide an automaticsewer Alusherincluding a water reservoir Vfrom 'which the water 1s siphoned 'when thewater in the' reservoir reaches a predetermined level.

Fig. 2 is a section taken on line 2-2 Aof Fig. 1. y n D ig'. 3 is a` section taken on line .1 -3 of g. 1. Fig. 4 isan enlarged sectional detail, and

. Fig. 5 is an enlarged sectional detail of the metering. device. Y Y j Referring to the drawing by referencevcharl aeters l have shown a water reservoir tank inciuding the features of my invention generally at 10.

As shown the reservoirv is ofthe type new usually used for the purpose of iiushine; sewers andl have shown my invention lapted to be installed in this type of reseiwcur.`V The reservoir 10 includes a main portion 12 having a centrally located reduced weil 13 therein. To adapt this type of reservoir for my invention a portion of the well 13 is deepened to form a well 14 and a partition wall 15 is provided which terminates below the top of the reservoir and divides the reservoir iutwo sections 16 and 17. A pipe 18 which communicates with thesewer opens into the well 14.

In the reservoir 12 I provide a siphon device which is indicated generally at 2O and includes a yoke portion 21, a connecting portion 22 and a goose neckportion 23. The yoke portion 21 includes two legs 24 and 25 positioned one on eachside of the wall 15 and which communicate with each other by a. portion 26 which has a common outlet 26a Y (see Fig. 4) opening through the top thereof.

vided with a small vent aperture 26 in the lower wall thereof. The lower ends of the legs 24 and 25 extend downwardly to a point spaced a slight distance above the bottoni of the reservoir portion 12. The connecting portion 22 communicates with the yokevv outlet 26 and curves as at 27 to one side of the wall 15 into the reservoir portion 17 where itinw cludes a downwardly extending leg 28 which communicates with the inlet 29 of the goose `neck portion 23.

The goose neck. portion23 of the siphon includes a downwardly extending portion 36 w rich extends downward to adjacent the bottom of the well 14 where it rounds into an upwardly extending portion 31` which in Vvcludes an angular outlet portion' 32 which communicates with the pipe 18 to the sewer. On the angular outlet portion 32 of the goose neck I provide areduced inlet portion 33 having a pipe 34 communicating therewith which extends upwardly to a point above the maximum water level in the reservoir. The pipe 34 serves as an overiiow pipe to prevent -an excessive amount of water from accumulating in the' reservoirshouldthe device become inoperative and also as a vent to allow escape of any sewer through the pipe 18.

For fillingV the reservoir l provide a pipe gases which back up u 35 which extends from Ya suitable source of water supply (not shown). The pipe .35 'extends downwardly to adacent the wall 15 where it includes a branca portion 36 whichY extends into the portion16of the reservoir and a branch portion 37 which extends into the portion 17 `of the reservoir. The branch 36 is provided with an outlet valve 33 which is actuated by a float and t-he'branch 37 is provided with an outlet valve 40 which is actuated by a iioatr41. The valves 38 and 4() may be any type of float actuated valve desired. VThe valve 38 is arranged so that when the ioat 39 moves downwardly a predetermined distance it will open to discharge water therefrom while the valve 4() is arranged so that when the yfloat 41 rises it will open to discharge water therefrom.

The flow of water-through the pipe y35 to the valves 38 and 4G may be controlled by a shut-off valve 42. i l

Adjacent the top of the wall 15 I provide a metering device indicated generally at 45.- As shown this device includes a metal plate 46 which is preferably copper, embedded in the wall, and includes a lower aperture 47 and an upper aperture 48. Secured Vtothe plate 46 and extending downwardly at an angle towards the reservoir portion 17 I provide a trough 49. For protecting the metering device 45 from refuse or other foreign matter I preferably provide screen members as indicated at 50.

In operation thevalve 42 is opened to allow-water to iiow to the Yvalves 38 and 40. VVhenthe valve 42 is opened water will flow to the valve 38 and discharge theretroniinto the reservoir 'portion 16 as the lioat .39V is in a lowered position and the valve 38 is open. The water flows from the valve 38 into the Vreservoir section V16 and rises 'therein until it reaches the metering device 45 whereupon as the water continues to rise it llows 'through the metering aperturel and discharges into the reservoir section 16. As the water rises in the reservoir section 17 and the lower end of the yoke leg 25 becomes submerged the air trapped in thelegs 24 and 25 esca pes through the vent aperture 26of the yoke. When the water rises inthe reservoir te a point adjacentthe top of the wall 15 'it raises the float 41 which in turn opens the valve 40 whereupon` the valve 40discharges water into the reservoir section 17.

The water continues to flow from the reservoir section 16 .through then'ietering device 45 into thev reservoir sectionv 17 until the water levels iiiY both the reservoir sections 16 -and 17 are the saine. `whereupon the water leveliin both sections continues to rise and. rises above the topot the wall 15 and to a point above the outlet 26a as indicated at A K 'in Fig. 2. As the water rises above the outlet "l 260; it llows through the connecting portion 220i the siphon intothe goose neck portion V23 and thence into the pipe 18 from which itis discharged into the sewer.

As the water thus flows through the goose neck into the pipe 1Sv it creia-tes a suction which produces a Siphon action in the legs 24 alid 25 thereby causing tle water in both reservoir sections 16 and -17 to be drawn therefrom untilthe water level iii the sec- 26` will not break the'suction due to the large 4level of the upper-aperture 48'and will then liow through the aperture 48 into the reservoir section 17.

The reservoir is divided into two portions to enable the metering to be accomplished by the device 45 instead of by float valves 38 and-40.y In operation the reservoir portion 16 is rapidly filled by the valve 38 until the' level of the water in the reservoir 16 reaches the device 45. The float 39 is set to cause water to llow from the valve 38 only when the water level permits a slight discharge through the device 45. This iills the reservoir 17 very slowly, requiring about twenty-tour hours for the operation.

When the water in the reservoir 17 reaches the lioat 41 the valve'40 is opened whereupon they water level rapidly rises to the position shown at A (Fig. 2). Then the water has reached this level A the airentrapped in the space 26a and the pipe 30 has a pressure suiiicient to'bubble through the water in the trap 31. 4As the air surges through the trap 3l the siphonizing action is started and the water discharges at the full capacity ot the siphon. 'F rom the foregoing description it will be apparent that I have provided a novel sewer 4flushing device which is simple in construction and eliicieiitin use.

Havingthus described my invention, what I claim is: y

1. In a sewer flushing device, a reservoir Ycomprising two parts, one of said parts beiiig'deeper than the other a conduit leading from said deeper part, asiphon device including a pair of communicating spaced legs positioned with one ot said legs coininunicating with one of said reservoir parts and the other leg with the other of said parts, said devicehavingv an outlet, a hollow member connected to said outlet, said hollow member extending down into said 'deeper part below the said conduit and Vcommunicating with said conduit.

2. In a sewer flushing device, a reservoir comprising two parts, a conduit leading from one of said parts, a siphon device comprising a pair ofcommunicating spaced hollow legs positioned with one of said legs cmmunicating with one of said reservoir parts and the 'other leg wlth the other of' said parts, said device having an outlet, a hollow member lconnected to said outlet, said hollow member extending down into said reservoir and coni- 'municating with said conduit.

3. Ina sewer flushing device, a reservoir comprising two parts, one of said parts be-A and communicating with said conduit.

4. In a sewer flushing device, a reservoir, a partition extending across said reservoir and dividing saidreservoir into twoV parts, one of said parts being deeper than the other,

' a conduit leading from said deeper part, a

siphon device, said siphon device including an inverted U-shaped portion comprising a pair or' communicating spaced hollow upright legs positioned with one of said legs communicating with one of said reservoir parts and the other leg with the other of said parts, said U-shaped portion having a lateral outlet at the highest point thereof, a hollow member connected to said lateral outlet, said hollow `member extending down into said deeper part below the said conduit and being bent back upon itself and extending upward and communicating with said conduit.

5. In a sewer iiushing device, a reservoir comprising two parts, one of said parts bef i ing deeper than the other, a conduit leading means whereby when the water level in the i'i'oni said deeper part, a Siphon device in cluding a pair-of communicating spaced legs 'positioned with-one of said legs communieating with one of said reservoir parts and the other leg with the other of said parts, said device having an outlet, a hollow member connected to said outlet, said hollow member extending down into said deeper part below the `said conduit and communicating with said conduit, means to convey Water to each of said reservoir parts, means to control the flow of water into each of said reservoir parts,

shallow reservoir part reaches a predetermined low level waterwill be admitted to said shallow part and when it reaches a predetermined high level the water will be shut off, and means whereby when the water in said deeper reservoir part rises to a predetermined level water will be admitted to said deeper part and when the water falls below a predetermined level the water will be shut off.

G. In a sewer fiushing' device, a reservoir comprising two parts, one of said parts being deeper than the other, a conduit leading from said deeper part,'a siphon device, said siphon device including an inverted U- shaped portion comprising apair of communicating legs positioned with one of said legs communicating with one of said reservoir parts and the other leg with the other oi" said parts, said U-shape-d portion having an outlet, a hollow member.connected to said outlet, said hollow member extending down into said deeper part below the said conduit and being bent back upon itseli1 and extending upward and communicating with said hollow conduit, means to convey water to each of said reservoir parts, means to control the flow of wat-er into each of said reservoir parts, means whereby when the water level in the Yshallow reservoir part reaches a predetermined low level water will be admitted to said shallow part and when it reaches a predetermined high level the water will be shut off, and means whereby when the water in said deeper reservoir pait rises to a predetermined level water will Vbe admitted to said deeper part and when the water falls below a predetermined level the water will be shut oit.

'Y 7. In'a sewer flushing device, a reservoir, a partition extending across said reservoir and divfidin-g said reservoir into two parts, one of said parts being deeper than the other, a conduit opening into said deeper part, a

siphon device, said siphon device including Y a U-shaped portion comprising a pair of communicating, spaced, hollow, upright legs positioned with one of said legs communicating with one of said reservoir parts and the other leg communicating with the other of said parts,'said U-shaped portion having a lateral outlet at the highest point thereof, a hollow member connected to said lateral outlet, said hollow member extending down into said well below the sai-d conduit and being bent back upon itself and extending upward and communicating with said conduit, means to convey water to each of said reservoir parts, means t-o control the flow of water'into each of said reservoir parts, means whereby when the water level in the reservoir part not including said well reaches a predetermined low level water will be admitted to sai-d last part and when it reaches a vpredetermined high level the water will be shut ofi', and

means whereby when the water in said reser-

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