US271110A

US271110A - Math ias pabst

Info

Publication number: US271110A
Authority: US
Publication date: 1883-01-23
Anticipated expiration: 1900-01-23

Description

(No Model.)

M. PABST.

MEANS FOR PREVENTING OVBRPLOW FROM BAGKWAI'ER.

Patented Jan.28, 1883.

ATTORNEYS.

} Illl m BN WITNESSES EEW NITED STATES PATENT OFFICE.

MATHIAS PABST, OF WASHINGTON, DISTRICT OF COLUMBIA.

MEANS FOR PREVENTING OVERFLOW FROM BACKWA'TER.

SPECIFICATION forming part of Letters Patent No. 271,110, dated January 23, 1888.

Application filed October 1'7, 1882. (No model.)

To all whom it may concern:

Be it known that I, llTATHIAS PABST, of Washington city, District of Columbia, have invented a new and Improved Means for Preventing Overflow from Backwater; and I do hereby declare that the following is afull, clear, and exact description of the same, reference being had to the accom panying drawings, forming a part of this specification.

The object of my invention is to provide a simple means for preventing the overflow of the cellars and streets in low districts, and the destruction of goods stored in such places as is caused by the backflow of water through the sewer in times of flood, whether this backflow be occasioned by the rise of the level of the stream into Which the sewer empties or the lack of capacity in the pipe for carrying off the water. In most of the appliances for this purpose check-valves have been used; but the difficulty with these is that while they stop the inflow of water they prevent also the discharge of the waste water from the dwellings. Among other forms of devices for'this purpose is a stand-pipe connecting with the sewer-pipe and rising above the highest level of the water with an inwardly-opening valve in the lower end of the stand-pipe, so that the backflow of water closes this valve and rises in the standpipe, as shown in Patent No.

I 117,156. In this case, however, the lower end of the stand-pipe is contained in a pit into which the water from the cellar flows and remains constantly stagnant, flowing oft only a small quantity at a time .as thelevel of the water in the pit raises the valve. All valves of this character are liable -to be choked and defeat their primary object, and the additional cost of constructing and fitting in such devices has been a serious drawback totheir adoption.

Myinvention is based upon the same general principle of the patent referred t0-t. 0., it takes advantage of the principle of equalizing the level of the high water by means of a stand-pipe; and it consists in making this stand-pipedetachable,withitslowerendadapted to be fitted into the mouth of the sewer with a water-tightjoint by simply telescoping into the sewer. This device requires no digging, no special sewer-connection, and may be adjusted by any inexperienced laborer or domestic in times of flood, this tube, cylinder, or pipe being designed at other times to be hung up or stored in the cellar close by the connection to which it is to be fitted.

Figure 1 represents a side view in section through the earth of the devices as applied to the cellar of a house, and Fig. 2 represents a similar view for preventing overflow in the streets. Fig. 3 is a side view of the tapering tube or stand-pipe detached from its connection with the sewer.

Referring to Fig. l, A represents the ground level, and B the usual water-level of a stream.

into which the sewer G empties. This sewer opens into the cellar Gr through the pipe D, and also has communication through a trap with a pipe, E, leading down from the sinks, bath-rooms, water-closets, &c., and which carries ofl' the discharge therefrom. Now, it through sudden "rains the level of the water in the stream should rise to the dotted line new, it will be seen that the water would force its way back through the sewer O and rise into the cellar. To obviate this, I place the pipe, tube, or cylinder F directly in the mouth of the sewer and fit ittherein withawater-tightjoint, and this pipe extends above the highest water-level, as indicated by'the dotted line, so that the water simply rises in this tube to its level without flooding the cellar and. damaging the goods which may be stored therein.

For adapting the invention to the prevention of overflow in the streets, I place the pipe F in the mouth of the sewer, where it opens into the street, and when thewater rises to the high level. y y it simply passes back through the sewer-(land rises to a similar level in the pipe F. These tubes, pipes, or cylinders If are provided at their lower ends with rubberor other elastic rings or gaskets, so as to make a water-tight joint when jammed into the sewermouth, and are also made tapering, as shown, so that waste water may be readily poured into the top end of the same, if required. When the pipe F is used in the streets, as thus described, it effectually prevents the overflow of the backwater; but in times of, heavy rain the streets may become flooded from the direct fall of the rain in the streets, and this cannot be carried oft by the sewer on account of the upward extension of pipe F. To provide for this difficulty, I dig a pit and construct a cistern, H, near the sewer, in which the rain accumulates as it falls, and then from this pit to the open end of the pipe F the water from this pit is transferred by fire-engines, pumps, or by any other suitable means.

By means of the invention, as thus described, it will be seen that the backtlow of water is effectually prevented, and this, too, without any interference wither stoppage of the discharge from the sinks or water-closets.

In defining myinvention more clearly,Iwould state that I am aware also of patent to Bush,

February 5, 1856, in which a tapering detachable tube is inserted in the grating of a sink. In this case, however, the tube is but a few -inches high, and no extension of the same, or other simple change of degree would'accomplish the object of my invention, because such tube does not form a closed continuation of the discharge-pipe, and the water could flow up through the grating or perforated plate around this tube, no matter how high the latter might be carried. The distinctive feature of my invention is to be found in combiningthe tube with the sewer-mouth by a tight joint, so that the said tube or stand-pipe forms a closed continuation of the sewer-pipe, rising above the high-water level.

Having thus described my invention, what I claim as new is- The combination, with the mouth of the.

sewer-pipe, of the detachable tube or stand- MATHIAs PABST.

Witnesses:

JOHN J. DONNELLY, LoUrs PABS'I.