US447387A - Sewer-flush check-valve - Google Patents

Description

(No Model.)

J. J. WADE. SEWER FLUSH' G'HEGK VALVE.

Patented Mar. 3, 1891.

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SEWER-FLUSH Application filed April l2, 1890.

T0 @ZZ whom it may concern/.f

Be it known that I, JAMES J. IVADE, a citizen of the United States, residing at Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in a Sewer -Flush Check-Valve, which are fully set forth in the following specification, reference being had to the accompanying drawings, forming a part thereof.

The purpose of this invention is to provide a check-valve, incombination with the seweriiushing device patented to me by Letters Patent dated July 16, 1889, numbered 406,977, such valve to be adapted to,serve the ordinary purpose of a check-valve in a sewer and being constructed in such manner as to be readily applied in the same fitting which conrains my flushing device, and also being adapted to perform a special function in respect to said iiushing device-viz., that when the flushing-stream is turned on to clear the pipe and there exists in the pipe beyond the stream such obstruction as prevents the immediate egress of the flushing-stream, causing it to back up, a check-valve, being closed behind the entrance of the ushing-stream by the backing-up of the water, will permit the entire pressure of the Iiushing-stream-that is, the entire pressurefrom the water-supply to be exerted to eject the obstruction from the pipe.

In the drawings, Figure lis a vertical section longitudinally through a portion of a sewer-drain having my flushing device, the same being cut through the man-hole and Ventilating-ducts. Fig. 2 is a section at the line 2 2 on Fig. l, but with the valve removed,

showing the valve-seat in the pipe. Fig. 3 is a side elevation of the removable valve-seat and valve hinged thereto. Fig. 4 is a face elevation of the valve.

A is a section of a sewer, comprising a trap and having my iiushing device therein, and having a man-hole opening and Ventilatingopening on the two sides ofthe trap, respectively, and having also two check-valves, one on each side of the ushing-jet opening.

A is the trap; A2, the man-hole opening; A3, a Ventilating-opening.

A4 is a iiushing-jet opening.

A5 is a check-valve back of the flushing-j et.

A6 is a check-valve forward of the tl'ush- NITED STATES PATENT OFFICE.

CHICAGO, ILLINOIS.

CH ECK-VALVE.

SPECIFICATION forming part of Letters Patent No. 447,387', dated March 3, 1891.

Serial No. 347.706. (No model.)

and the form of said valves. For the purpose of affording a seat for the check-valve in the fitting A, I form an annular boss a therein, the same being shown at the seat of both of the valves A5 and A6. 1

I will iirst describe the construction by which the inner valve A5 is accommodated in the fitting. At. the vicinityof the boss a", and for a distance somewhat more than the diameter of the valve-that is to say, than the in? terior diameter of the pipe-the fitting is extended to form a rectangular recess A7 at the upper side of the otherwise circularduct. A valve-seat B, which may be made of brass, is formed of the shape seen most completely in Fig. 2, having the circular part adapted to fit onto the annular boss a5, to which it will be secured by screws l), cement being employed to make its junction with the lboss watertight without dressing the face of the boss or the contacting-face of the seat B. This brass seat B is extended from itscircular part upward into the rectangular recess A7, but not the. ,full width or height of said recess, and at the upper corners of said rectangular extension it has the ears B B', proj ecting'laterally, which form the pivots of the valve. The

valve C -is formed with lugs C C in form of hooks,'(best seen in Fig. 3,) which fit upon the lugs B of the seat B. The valve and seat may be dressed to make a perfect lt of their' contacting-faces before being inserted into the pipe and will be introduced thereinto through the man-hole and passed in horizontally at the full diameter of the pipe to reach the enlargement for the inner valve A5 and then turned up edgewise and placed on the annular boss, whereupon the valve may be lifted and access obtained to the face of the valve-seat to insert the screws, whereby it is secured to the boss 'a5 on the pipe. When IOO thus in position, the valve cannot escape from the pivots B, being prevented from lateral displacement both by the sides of the pipe and by the shoulders B10 on the valveseat, and being prevented from displacement upwardly by the upper wall A70 of the rectangular recess A7. I am thus able to make a very completely fitting valve and seat in very simple form and attach it very readily to the fitting, no machine-work whatever being required upon the pipe-fitting itself. It will be observed that the corners between the annular boss c5 and the rectangular space of the cavity A7 accommodate the pivots of the valve, and that thereby there is avoided any necessity for enlarging the cavity vertically beyond the mere thickness of the valve itself, because space for the hooks C when the valve is lifted is obtained at the sides of the circle which bounds the boss a5. The valve An may be in all respects similarly formed and provided with a similar-seat similarly secured in the pipe--that is, on the annular boss d5 in respect to the valve Al-but being located immediately below the man-hole the necessity for the rectangular recess to accommodate the valve when open does not exist. The function of these two valves A5 and A6 is somewhat different, the valve A5 serving, as already stated, to make the entire force of the flushing-j et available for forcing `out 0bstructions, while the valve A5 serves the purpose of preventing foul backwater from the sewer in any event entering the fiushing-pipe, which being connected with the pure watersupply might, if it were open to backwater, be the aven ue through which the supply would be contaminated. a

l. In combination with the sewerpipe provided with an induction for the iiushing jet or stream, a cheek-valve located back of the entrance of such jet and adapted to close away from the same and to open automatically with the normal iiow through the sewer, substantially as and for the purpose set forth.

2. In combination with the sewcr-pipe having an induction-orifice for the f1 ushing stream or jet directed onward in the normal direction of How through the sewer, a check-valve interposed in the sewer-pipe in advance of the liushing-jet orifice and in proximity thereto and standing normally in range of the jet ejected from the orifice and adapted to close back toward said orifice, whereby backwater from the sewer is prevented by such valve from entering the ushing-pipe and the valve is washed clean by the flushing-pipe, substantially as set forth.

3. In a sewer-pipe, a fitting A, having a ushingjet orifice A4 and provided with an annular boss or shoulder a? back of said orifice, and a rectangular recess A7 upon the up per side, and a Valve-seat B, adapted to be secured upon the annular boss, and the pivots B', projecting laterally in said rectangular recess, and the valve provided with the downwardly-open hooks C' C', whereby it is adapted to be pivoted on said pivots B', substantially as set forth.

4. In combination with the fitting having the interiorly-annular boss d5, the valve-seat B, adapted to be secured upon said boss and having the lugs B B', the valve C, having the hooks C C', whereby it is adapted to be suspended on said pivots, saidpivots projecting iny the annular space included between a hori- Zontal and two opposite vertical tan gen ts to the outer margin of the valve-seat, the said pipe having the rectangular recess A7 at the upper side, the height of which above the horizontal line of said pivots is less than the sum of the thickness of the valve and the diameter of the pivots, whereby the upper wall of said recess serves to retain the valve on said pivots, substantially as set forth.

In testimony whereof I have hereunto set my hand, in the presence of two witnesses, this 5th day of April, A. D. 1890.

JAMES J. WADE. Titnessesz CHAs. S. BURTON, J EAN ELLIOTT.

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