US2427258A

US2427258A - House drain fitting

Info

Publication number: US2427258A
Application number: US597891A
Authority: US
Inventors: Cavalieri Silvestro
Original assignee: Individual
Current assignee: Individual
Priority date: 1945-06-06
Filing date: 1945-06-06
Publication date: 1947-09-09
Anticipated expiration: 1964-09-09

Description

P 1947 y s. QAVALIERI 2,427,258 HOUSE DRAI-N FITTING Filed June e, 1945 INVENTOR.

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Patented Sept. 9, 1947 UNITED STATES PATENT OFFICE 2,427,258. HOUSE DRAIN FITTING Silvestro Cavalieri, Chicago, 111. V Application June 6. 1945, Serial No. 597,891

This invention relates to the type of house drain fittings which are placed in the basement and like floors of buildingsopening on a level with the floors, and, provided with sealing gaskets, orificed drain grids or strainer plates, and with removable closure'heads, Y

A fitting of this type is disclosed in my prior patent, No, 1,812,583, issued June 30, 1931. This prior fitting is used in combination with a drainpipe having an expanded annular inlet head arranged on a level with the floor surface. A circular drain fixture is disposed within the expanded inlet headof the drainpipe and firmly cemented in place therewith. The drain fixture is provided with a strainer plate and with a removable cover therefor. Draining of water which accumulates in the place equipped with the fitting, for example, in the basement, is effected through the strainer plate upon removal of the cover. Among the advantages of the prior fitting may be mentioned its structural simplicity and ease of installation.

The present invention preserves and retains these advantages and introduces a number of features which are valuable from the standpoint of manufacture as well as installation and safe and eflicient operation of the fitting. Some of the objects and features of the invention are noted below.

One object of the invention is concerned with.

the provision of an improved drain fitting comprising a tubular generally circular shell forming a downwardly extending skirt or apron which is disposed over the drainpipe and cemented in place therewith, and having an upwardly extending generally circular housing for receiving a strainer plate, a gasket, and a removable cover.

The novel fitting can be employed with drainpipes of difierent diameters, thus contributing to the standardization of such fittingsandreducing the number of sizes which must be kept in stock.

The new fitting provides a relatively large bonding area as compared with previously known structures of this type, and thus assures secure cementing in place; r

Another object of the invention is realized by the provision of a vent pipe attached to the removable cover ofthe'fitting for the purpose of relieving internalpressure; thus eliminating danger of damage to the fitting or to the floor, or both, as well as expenses for repair and inconvenience to the property owner.

These and additional objects and features will be brought out in the course of the detailed 9 Claims. (01. 182-31) description which is rendered below with reference to the accompanying drawings. In these drawings,

Fig. l' 'represent's an embodiment of the new fitting in elevation;

Fig. 2 illustrates a top view of Fig. 1;

Fig.3 i a cross-sectional view of the fitting and the drainpipe taken approximately along ines 3-3 of Fig; 2; and

Fig. 4 shows a fragmentary view of the housing and cover approximately along the sectional lines 4-4 in Fig. 2.

Like parts'are identified by like reference n11- merals throughout the drawings.

Reference numeral ll indicates the upper end of a drain-pipe which may connect, for example, with the sewer. The drainpipe is sunk in the fioor l3 and is provided with a flange l2 which may be part of the drainpipe or may be attached to it in any approved and suitable manner. The fitting may be provided for a drainpipe of a cer-' tain diameter, but may also be used in connection withdrainpipes of smaller diameter. In the first case-the flange l2 may be part of the drainpipe, and in--the'latter case the flange may be suitably 'attached'toit. 1 The drainpipe with its flange extends through the cement l3, forming the floor, near the upper surface thereof.

The new drain fitting is made in the form of a tubular shell comprising a lower generally circular section 14 depending downwardly in the form of askirt or apron and a section l5 forming a housing and extending upwardly therefrom. The two sections form a central annular portion l6, providing at ll aseat for engagement with theflangel2 of the drainpipe. The upper section15 0f the fitting comprises the generally circular portion I8 which is of smaller diameter than the apron l4 and is provided with two oppositely disposed radially extending enlargements l9 and 20. At the'juncture'of the upper and lower sections of the fitting is formed the shoulder-ZLHThe fitting isplaced on the drainpipe,

as illustrated in- Fig. 3, .with the flange l2 en- 0 gagin the seat H, and is cemented in place with the drainpipe. If desired or necessary, a

washer-like gasket'or gasketsmay be inserted tion of the fitting forming the skirt or apron l4 tapers inwardly, as shown, so as to facilitate the insertion and placement of the structure. The upper end of the housing section it of the fitting is disposed on a level with the surface of the cement floor Q3. The fitting presents a large bonding area. Its displacement upwardly is prevented by the shoulder 25, while its angular placement is secured by the enlargements l9 and 2d radially extending from the upper housing section l5.

An orificed strainer plate or grid having ribs such as indicated at 22 is placed in the shallow circular well formed by the central section id of the fixture. A suitable gasket 23 is placed above the grid into the shallow annular rim formed above the well containing the strainer plate or grid.

The radially projecting enlargements iii-and dially from the edge or the circular cover Theselugs or projections 2i; and El are tapered, as particularly shown in Fig. 4,'for locking engagement with the tapered under side of the locking slots such as The action of the lugs 26 and 2'! with respect to the locking slots is well known from so-called bayonet joints.

The cover 255 may be a cast structure and, imilarly, the fitting may be a cast structure. cover 23 may he provided with downwardly extending, hollowed-out portions, indicated in Fig. 2 at 3B and for the purpose of forming radial ribs 32 and to facilitate the rotation required incident to insertion and removal of the cover.

The vent pipe may be screwed nto the cover, shown in lie, 3, and may be secured thereto by means of a nut and a washer The pipe extends upwardly and may be furnished in length requ red for any given conditions indicated by experience. For example, if the highest level to which a basement may be flooded is two feet, the vent pipe required will measure just a little over two feet; or if experience indicates that back pressure in the sewer may lift the contents of the drainpipe by say, two feet, a vent pipe measuring a little over two feet in length will be sufficient. The upper free end of the vent pipe 33 may be squared, as indicated at St, for the purpose of operating the lid or cover 28 by means of a wrench or the like, thus eliminating the necessity of removing the lid for draim age by the operation of the cover itself.

The operation of the drain fitting will be apparent from the above description, but may be summarized as follows:

Once the fitting is put in place, as indicated in the figures, it is ready for operation. In ternal pressure is relieved through the vent pipe 33 and the drain-pipe contents ma rise in this vent pipe. Damage to the floor or to the fitting, or'to both, which may otherwise result from pressure in the sewer system, is thus avoided. Water may accumulate in the basement above the fixture and around the vent pipe When draining is the lid or cover '28 is re moved by twisting it in counter-clockwise direction, as seen in Fig. 2, to remove the

lugs

25 and 2? from engagement with their locking slots in the enlargements i9 and Eil, whereupon the lid and the vent pipe are lifted out. The water then flows into the drainpipe ll through the apertures between the ribs 22 in the strainer plate or The grid. Debris collecting above the grid may be removed and the lid or cover 23 may then again be put in place by first inserting the

lugs

26 and 27 into the openings 2d and 25, and then turning the lid or cover in clockwise direction, as seen in Fig. 2, so as to lock the

lugs

26 and 2? in their respective slots such as 29, shown in Fig. 4.

Changes may be made within the spirit and scope of the following claims which define what is believed to be new and desired to have protected by Letters Patent of the United States.

I claim:

1. A house drain fitting of the class described, for coaction with a drainpipe sunk in the floor, comprising a generally circular tubular shell having a downwardly depending generally circular skirt disposed around the upper end of said drainpipe and radially spaced therefrom and a tubular generally circular housing of smaller diameter than said skirt extending upwardly from said skirt and forming a peripheral annular shoulder therewith for anchoring said shell against axial upward displacement, the upper edge of said housing being level with the floor surface, said irt tapering downwardly and inwardly to facilitate the placing thereof with respect to said drainpipe, and said housin being provided with enlargements radially outwardly projecting therefrom to secure the fitting against gular displacement relative to said drainpipe.

The combination and structure defined in claim 1, together with an annular radially inwardly projecting flange in said fitting forming an axially re d annular seat for centering engagement drainpipe.

3. The combination and structure defined in claim 1, together with an annular radially inwardly projecting flange in said fitting formll'lg an annular recess for receiving a strainer plate and also forming an annular shoulder for receiving a gasket, and cover for attachment to said housing in engagement \Vibh said gasket.

l. The combination and structure defined in claim 1, together with an annular radially inwardly projecting fiange in said fitting forming an annular recess for receiving a strainer plate and also forming an annular shoulder for receiving a gasket, a cover for attachment to said housing in engagement with said gasket, and means in the enlargements carried by said housing for securing said cover.

5. The combination and structure defined in claim 1, together with an annular radially inwardly projecting flange in said fitting forming an annular recess for receiving a strainer plate and also forming an annular shoulder for receiving a gasket, a cover for attachment to said housing in engagement with said gasket, said cover being provided with lugs radially extending therefrom, and means in the enlargements carried by said housing for securing said lugs to secure said cover.

6. In a house drain of the class described, the combination of a drainpipe sunk in the floor, with a tubular generally circular drain fitting surrounding the upper end of said drainpipe below the floor level, and an annular radiall inwardly projecting flange forming in said fitting spacer means for engagement with the drainpipeship with said drainpipe and with its upper edge substantially level with the floor, said fitting consisting of a unitary generally circular tubular shell comprising a lower tubular downwardly and inwardly tapering portion and an upper tubular housing portion of smaller diameter than said lower portion to form an outer annular peripherally extending shoulder which anchors the fitting in the floor against axial upward displacement, the downward and inward taper of said lower portion of the shell facilitating the placing of said fitting relative to said drainpipe, and a plurality of enlargem nts projecting radially outwardly from said upper housing portion of the shell for anchoring said fitting in said floor against angular displacement relative thereto.

8. The structure and combination defined in claim 7, together with a cover for said fitting, lug means extending radially from said cover, and a recess formed in each of said radially extending enlargements of said housing portion for receiving an associated lug means of said cover for the purpose of securing said cover on said fitting.

9. The structure and combination defined in claim 7, together with an annular flange projecting radially inwardly from the inner wall of said shell, said flange forming a plurality of annular recesses, namely, (1) an annular downwardly racing recess for engagement with the top of said drainpipe, whereby said fittin is centered on the drain pipe and its upper edge is aligned with the floor lever, (2) an annular intermediate upwardly facing recess for receiving a strainer, and (3) an annular upwardly facing top recess of larger diameter than said intermediate recess for receiving an annular gasket and a cover in sealin engagement with such gasket, a plurality of lug means forming part of said cover and radially projecting therefrom, and a recess formed in each of said radially extending enlargements of said housing portion for receiving an associated lug means of said cover for the purpose of securing the cover on said fitting.

SILVESTRO CAVALIERI.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 957,487 Berry May 10, 1910 1,305,767 Bythiner et a1 June 3, 1919 1,371,568 Mellon Mar. 15, 1921 1,914,780 Lichamer June 20, 1933