US207260A - Improvement in sewer-traps - Google Patents

Description

w. F. DOWNEY.

Sewer-Trap.

lio-.201.26m Patented Aug. 20, 1,818..

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y? wl and District of Columbia, have invented certion of a valve for preventing the inowing for permitting of the free ventilation of the valve with reference to its seat, whereby the vision be made against the inowing of water UNITED STATES PATENT OFFICE.

' lMPR'ovEMEN'rfIN SEWER-Temas.

` Specification forming part ofv Letters Patent No. 2

07,260, dated August :20, 1878; application 'filed I July 23, 1878.

To all 'whom it may concer-n ,Be it lgnown that I, WILLIAM F. DowNEY, of ,Washingtom in the county of Washington tain new and useful' Improvements in Sewer- Traps; and I d'0 hereby declare that thefollowing is a full, clear, and exact description thereof, which will enable others skilled in the art to which ,it 'appertains to make and use the same, reference being had to the accompanying drawings, and to letters of referncemarked thereon, which form a part of this spec-ication. Thisinvent-ion relates to improvements made on the sewer-trapsl patented by me on the 13th of February, 187 7, December 4, 1877, and March 26, 1878; and it consists in a novelconstrucef water throu'ghithe dischargeoriiic'e"a'n`dtl`1e'Y mjurious effects which result therefromyand chamber of the valve; Vand it further consists in a novel'l method of adjusting a swinging valve, when in its normal position, is` partially open for `the purpose of ventilation, but is held in such a position as to be readily closed upon the entrance to its case of backwater and the invention further consists in 'certain combinations which will be morefully explained hereinafter. `Inthe annexed drawings, which make apart of this specification, Figure 1 is al sectiral elevation of a trap embodying my improvei ments, and showing it as combined with a valve of peculiar construction; and Fig. 2 is an elevation ofthe valve and induction-pipe, showing themechanism for adjusting the valve with reference to its seat.

Correspondingl letters denote like parts both figures.

In valves of this type it is important that provision be made for sealin g them against the passage of sewer `or other noxious gases, and for allowing such gases from the trap or pipe outside of the point where the valve. or other seal. is applied. It is also important that prothrough the eduction-oriiice or pipe, and for flushing the trap by thewater from the roof for the ventilation of the chamber of the trap l tion of which serves las a chamber for water, r

which acts as a seal against the passage of gases. Near the outlet-oriiice there is formed a nozzle, B, to which a pipe is attached, which may lead to a flue in a chimney, or it may cxtend up through the roof of the building, and thus convey away 'any gas which may enter the trap. The opposite end ofthe trap, when in use, is made to assume a vertical or' nearly vertical position, and is provided with a noz zle, C, tol which a'bra'nchpi'pe, vrD, is fixed. `The branch D' of this pipe is to be connected to the eaves-trough of the building, or to a reservojir ot water in the upper part thereof, in

order that the trap may be flushed by the water whichV accumulates in the trough from falling rain, or is taken from the reservoir at times. This branch may also be connected to the sewerage-pipes leadin g from water-closets, wash-basns,or sinks in the upper stories of any building in which the trap is placed, so that in the event of water caused by a rise in rivers or streams, or from any other source, being made to flow into the outlet-orifice, and thus prevent the water from the inductionlpipe from lowi aged', the water or other substances from the upper stories of the building, owiu(r to its greater head or force, will pass 4through the trap.l y

The branch D2 is for the purpose of admitting airA to the chamberv E in the trap, and through it. to induction pipe or pipes, and thus thoroughly ventilating them. This vertical end of the trap is provided with a cap, F, which is properly secured thereto, and maybe removed for the vlpurpose of giving access to the interior, and to a valve placed therein, for

the purpose' of preventing the inilow of water to the pipes with which the trap is connected. Upon one side 'of the enlarged portion of the case of the trap there is formed a nozzle, Gr, in which there is an opening for the recepof the building in which it: may be placed, and

tion of an inductionpipe,H, which is made to 2 senseo is hinged thereto it will be caused by its own` gravity to remain 'partially open, and thus leave` a free passage for the air which enters the chamber E to pass through, and thus ven tilate said chamber and the induction-pipes.

For the purpose of preventing corrosion of the valve-seat, there is secured to the inner end of pipe H a non-corrosive ring of metal, H', the inner surface of which forms the valveseat, it being of the form shown, or of any' other that will best insure the formation of a tight joint with the valve.

For the purpose of closingl the end of the induction-pipe H at times, and in places where vthere is liable to be a back-pressure of water or an iniiow through the discharge-orlce of the trap, there is attached to the inner end of such pipe a swinging valve, I, which is preferably ofthe semicircular form shown, but

which may be of any other form that will cause itto form a tight joint with its seat when closed by back-pressure, but which will allow it to vremain partially open when not subjectedto suchpressure. This valve is made of a semi-spherical form, and, by preference, of sheet metal, so that it may 'be made to more readily close upon it-sy seat in the event of an influx of watervthrough the eductionforiice, that portion thereof' which comes in contact with its seat having a flat unbroken surface, which is to be covered with a hoodl I1, of rubber or other elastic substance, for forming the joint with the seat, said hood to be held in p osition by wire I2, which passes around the valve in front of a projection, I5, formed there on. For the purpose of arranging this valve with reference to its seat, and so that it may be readily removed for repairs, ythere is vattached to the pipe H a projection, K, which has an aperture formed in it for the reception of an. adjustable hinge, K1, .one portion of which passes through the projection K, the other being secured'to the valve.

K2 is a thumb-screw for holding the adjustable hinge in position in the projection K.

For facilitating the swinging movement of the valve, there is attached toits inner surface an arm, I3, which carries a weight, I4, the latter. being attached to the arm by means of a screw formed thereon, by which the weight is rendered adjustable, so that it may be more or less effectual in holding the valve in its open position, and also in preventing it from being raised up or carried into a more open position in the event of an inilow of water throughvthe eductionoricc.

Having thus described my invention, what Iclaim, and desire to secure by Letters Patent, is-

1. The swinging valve, when made adjustable with reference to its seat by means of a. sliding hingc, constructed substantially as described.

2. The combination of the swinging semispherical valve having a projecting flange for holding its facing, an elastic face, and a ring for securing said facing to' the valve, substan tially as set forth.

3. In combination with -the induction-pipe of a water or stench trap, having upon it a valve-seat which recedes from its upper to its lower surface, an adjustable swingingralve, substantially as and for the purpose set forth.

4. The combination of the case A, the induction-pipe H, and the adjustable swinging valve I, the parts being arranged to operate substantially as set forth.

5. A case for a stench-trap, provided with an aperture for the escape of gas ,outside ofthe vwater-seal, and with apertures for the reception of inlet and outlet'pipes, and an air-pipe for Ventilating said case,substantially as set forth.

In testimony that I claim the foregoing as lmy own I affix my signature in presence of two witnesses.

WM. F. DOWNEY.

Witnesses:

D. I. HOLLOWAY, A. T. MAUPIN.

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