US1941926A - Drainage system and fitting therefor - Google Patents

Description

Jan. 2, 1934 E. W. N. BOOSEY DRAINAGE SYSTEM AND FITTING THEREFOR Filed Nov. 4, 1929 2 Sheets-Sheet l BY@ 5% f A TTORN Y.

Jan. 2, 1934.

E. w. N. BOOSEY 1,941,926 I DRAINAGE SYSTEM AND FITTING THEREFOR Fild Nov. 4, 1929 2 Sheets-Sheet 2 1 N V [N TOR. :ZZda/ard M M Boos 9 B Y Patented Jan. 2, 1934 UNITED STATES DRAINAGE SYSTEM AND FITTING THEREFOR Edward w. N. Boosey, Detroit, Mich. ApplicationNovember 4, 1929. Serial No. 404,566

5 Claims. (Cl. 4-211) This invention relates to drainage systems and fittings therefor, and the object is to provide a new system of drainage differing from previous systems principally in the manner of venting connected fixtures to atmosphere for which purpose a new and unique fitting is utilized which discharges to the waste stack at one end and to a vent stack at the other and to which the usual bath tub, wash basin and closet of a bath room directly discharge.

The purpose of the invention therefore is to provide a system utilizing such fitting to avoid the discharge of waste water from fixtures in an upper story of a building through similar fittings in the floors below. Previous to my invention the bath room fittings all discharged into a fitting which formed a section of the main waste stack and consequently the flush water from all toilets above any particular fitting passed through the said fitting tending to siphon the traps connected with the fixtures of the lower bath rooms and this was true even though a vent line was provided for the fixtures of the bath room.

By my new system and through utilization of a peculiar form of fitting, each fitting is individual to the fixtures of a single bath room and no flush water from any other fixtures may pass therethrough and each fitting is individually vented to a main of such ample dimension that continual fiow of flush water in the main waste stack cannot siphon the fixtures connected with any one of the fittings.

Afurther object of the invention is to provide a fitting for the purpose stated which is in the nature of a sanitary T having a side branch of Y form to which the closet discharges and having hubs on opposite sides for connection of other fixtures such as a bath tub and wash tub and wash basin and separately venting the Y branch at its upper side to the upper end of the fitting which is directly connected to the vent main. By a construction of this character I am enabled to provide a drainage system with separate waste and vent mains wherein the flush water from any toilet of an upper fioor does not pass through the fitting to which the fixtures of a toilet room below discharges and therefore avoids the difficulties now encountered in buildings having several floors as for instance oflice buildings in which there is practically a continuous discharge of flush water through the main waste stack.

These general objects and the several novel features of the invention and the specific fitting permitting use of the system are hereinafter more specifically described and claimed, and the preferred form of construction of a system and fitting embodying my invention is shown in the accompanying drawings in which Fig. 1 is a View practically diagrammatic in form showing my improved drainage system.

Fig. 2 is a front elevation of the Y branched T utilized in the installation of the system. Fig. 3 is a section taken on line 33 of Fig. 2.

Fig. 4 is a section taken on line 44 oi Fig. 2.

In Fig. 1 I have shown the preferred form of installation of my new system which, as will be readily understood, may vary somewhat in specific arrangement and relationship of the conduits as may be required in installing the same in any particular building without altering the functioning of the parts or the cooperative relationship thereof. In Fig. 1 is indicated the usual waste stack '1 to which all fixtures discharge and with my new system I provide a fitting 2 in the main stack having a side hub 3 for reception of a discharge pipe 4 connected to the bottom of my special fitting '5 as is hereinafter described more in detail. This fitting is of the form of sanitary T having what may be termed a Y branch 14 to which the closet bend indicated at 11 discharges. The fitting 5 is also provided with hubs with which the conduits 6 and '7 leading to other fixtures of a bath room also discharge. The upper end of the fitting 5 is connected by means of a conduit 8, of practically the same internal diameter as the fitting 5, directly to a vent stack 9. It will be observed that in each floor the fitting 5 is independently connected to a vent stack'and is also independently connected to the waste stack and as the bath room fittings each discharge to this special fitting 5 there is free flow of air from the line 8 through the fitting 5 to the waste stack 1. Thus there is no possibility of siphoning the traps of any of the fixtures of the bathrooms connected to the waste stack as no fitting 5 receives flush water from any fitting thereabove.

As has been the practice heretofore the fitting to which the closet directly discharged formed part of the waste stack and flush water from toilet rooms on upper floors discharging simultaneously to the waste stack caused fixtures of the toilet rooms toward the bottom of the stack to be siphoned as the small vent lines with which the closet bend is usually provided were insufficient to prevent siphonage under such conditions.

To enable the proper installation of this "peculiar drainage system I haveprovided a fitting of special form shown more clearly in Figs. 2 to 4. As will be observed more particularly in Fig. 3, the side hub 10 approaches the main portion of the body of a fitting as a Y branch 14 and the closet bends or discharge line from the toilet indicated at 11 is secured to this hub 10. From the top side of this Y like branch 1 form an independent conduit 12 extending upwardly and opening near the upper end of the main body of the fitting at 13 considerably above the point of union of the Y branch 14 with the body.

It will be noted that the discharge water from the conduit or closet bend 11 is deflected downwardly immediately it enters the Y branch and that the pull of the flushing water is greatest at the high point just as the water enters the branch. Therefore, the vent conduit 12 for this Y branch opens thereto at this particular point. The suction is therefore relieved and this particular vent conduit 12 may becomparatively small in diameter as its only purpose is to relieve the suction produced by waste flow from a single toilet fixture.

Above this line of flow through the Y branch 14 the main or vertically positioned portion of the body of this special fitting is formed with side hubs 15 and 16 here shown as entering at an angleat opposite sides of the body as will be understood from Figs. 1 and 4 and shown as being threaded for introduction of the discharge conduit from a bath tub, urinal .or wash basin as the case may be. It is further to be noted that these hubs are so arranged that the connection of waste conduits of the wash basin or tub are at one side of any flow through the body of the fitting 5 as the hubs provide small side chambers 1'7 and 18 as shown in Fig. 3. The center line of these hub members 15and 16 is below the-center line of connection of the vent line 12 of the body and above the line of flow of the main body of water through the Y branch 14. As the upper end of the fitting 5 is directly connected by a line 8 with a vent of the full diameter of the fitting 5, these fixtures whose discharge lines are connected with these hubs 15 and 16 are directly vented through the upper end of the fitting and the line 8 to the main vent stack 9. 4' I The vent stack, as shown in Fig. 1, is connected at the bottom with the main waste stack and at the top above any fixture discharging to the waste stack 1 which is the preferred arrangement of the conduits.

Other arrangements of vent stacks may be made; however, but in all arrangements an essential feature exists in providing a cross conduit from the waste stack to the vent stack in which cross conduit is arranged a fitting to which the fixtures discharge substantially in the manner hereinbefore described whereby the flush Water from any set of fixtures cannot pass through the fitting to which fixtures of lower floors are connected. It is to be understood, however, that various alterations may be made in the construction and arrangement of parts without departing from the spirit and scope of the invention asset forth in the appended claims.

Having thus fully described my invention what I claim and desire to secure by Letters Patent of the United States is- 1. A drainage system comprising a waste stack, a vent stack, a. fitting to which fixtures discharge waste water, a conduit connecting the bottom end of the fitting to the waste stack, and a conduit of the same general diameter as the fitting connecting the upper end thereof to the vent stack, said fitting including a side branch of the same general diameter as the body of the fitting and having a vent conduit opening at one end to the upper side of the branch and at its other 4 end to the upper end of the body, and side projections extending beyond the general internal diameter of the body for connecting discharge conduits of other fixtures, the said last named connections being formed in the body of the fitting above the line of fiow through the side branch.

2. A drainage system for a series of fixtures discharging thereinto at points one above another which comprises a main waste stack, a vent stack opening to the waste stack above the point of connection of any discharge line thereto at the top and connected with the waste stack at the bottom below the point of the discharge of any fixture thereto, a cross conduit between the waste stack and the vent stack, a fitting arranged in substantially vertical position intermediate the ends of the cross conduit and having a side branch for the connection of a-closet bend, the said branch being in theform of a Y to deflect the discharge water downwardly in thesaid fitting, a vent conduit opening at one end to the top of the said side branch and at its other end to the upper end of the fitting, and additional openings for discharge lines of fixtures opening directly to the body above the line of flow through the said branch. p

3. In a drainage system, a fitting for the connection of the discharge-lines of several fixtures thereinto, consisting ofa member adapted for connection in a conduit in substantiallyvertical position and having a side branch for the discharge conduit of a fixture, said branch approaching the body of the fitting at an angle downwardly from the inlet, avent conduit at the top of the branch opening adjacent the top of the body of the fitting, and side branchesfor connection of discharge lines of additional fixtures below the pointof entrance of the said vent conduit to the body and above the line of flow through the branch, said fittingbeing connected at its bottom end to a waste conduit-and at its upperend to aventconduit.

4. In a drainage system, a fitting comprising a body, the lower end of which is directly connected with a waste conduit and the upper end of which is directly connected with a vent stack, said body having a side branch formed to direct flow there'- through downwardly into the body of, the fitting, hub portions forming side extensions each at one side of possible fiow through thebddy. and. adapted for attachment of the discharge linesof other fixtures, the fitting provided with a vent conduit opening at one end to the upper side of the branch and at its other end to the upper end of the body thesaid hub portions opening to the body above the line of fiow through the branch and by reason of connection of the upper end of the fitting to a vent stack uninfiue'nced by suction produced by. flow through the branch.

5. A drainage system comprising in combina+ tion a waste stack, a ventstack, a fitting to which the discharge conduits of several fixtures are connected, the said fitting discharging at its bottom end to the waste stack and having its upper end directly connected to the vent stack, the said fitting having an enlargement on one side open to the body and separately in'connection with the vented end of the fitting by means of the vent conduit, the discharge conduits of the fixtures being connected to the said enlarged side of the body thereof in communication withsaid vent conduit whereby each discharge conduit is vented through the top ofthe.fitting. q EDWARD N. BOOSEY.

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