US2724840A - Ventilated toilet bowl - Google Patents

Description

Nov. 29, 1955 w. v. SCOTT ET AL VENTILATED TOILET BOWL Filed May 6, 1952 I L v,

Thurman F Scott INVENTORS. William vtscott 771 M flmnm Emblem flltorne ys.

United States Patent VENTILATED TOILET BOWL William V. Scott, Bowie, and Thurman F. Scott, Wichita Falls, Tex.

Application May 6, 1952, Serial N0. 286,336

-1 Claim. 01. 4-216 This invention relates to ventilated toilet bowls, and more particularly to a toilet bowl having a built-in air duct connected to a vent pipe or stack for drawing air from the space surrounding the bowl through the bowl and exhausting such air to the outside of the building in which the toilet bowl is installed.

It is among the objects of the invention to provide an improved ventilated toilet bowl which has a built-inventilating duct and has substantially the same appearance as an unventilated bowl and can be manufactured at substantially the same cost as the cost of manufacturing u'nventilated bowls of equivalent quality; which does not utilize any portion of the flush system of the toilet bowl for ventilation and requires no fan, valve or other mechanical contrivance other than the exhaust stack for effective operation; which requires no additional installation expense other than the provision of the exhaust stack; and which is simple and durable in construction, and positive and effective in operation.

Other objects and advantages will become apparent from a consideration of the following description and the appended claims in conjunction with the accompanying drawings, wherein:

Figure 1 is a somewhat diagrammatic cross sectional view of a ventilated toilet bowl illustrative of the invention and an adjacent partition wall showing the manner of installing the ventilated toilet bowl;

Figure 2 is a bottom plan view of a seat cushion or pad for the toilet bowl; and

Figure 3 is a fragmentary cross sectional view showing a somewhat modified form of ventilated toilet bowl.

With continued reference to the drawing, the illustrated bowl, generally indicated at 10, has a base portion 11 adapted to rest on the floor 12 of a room, such as a bathroom, adjacent a partition wall 13 and including a trap 14, the discharge end of which is connected to a sewer line in a manner well known to the art. A bowl portion 15 extends upwardly from the base 11 and connects at its bottom with the trap 14, as indicated at 16 and an extension 17 projects rearwardly from the bowl portion 15 above the base 11 and includes a water chamber 18. A toilet flush tank 20 of well known construction is mounted adjacent the wall 13 and immediately above the extension 17 and is interiorly connected to the water chamber 18 by a suitable disconnectible fitting, as indicated at 21. The bowl portion 15 includes a conduit as indicated at 22 which is tapering in cross section from its upper end to its lower end and which connects the water chamber 18 with the interior of the bowl 15 for flushing the toilet when the tank valve is opened by operation of the flush valve handle 24, as is well known to the art.

An air duct 25 extends through the water chamber 18 in the extension 17 and comprises a tubular structure of the same material as the material of the toilet bowl 10, molded in position at the time the bowl is formed and temperature hardened at the time the remainder of the bowl is so hardened. This structure 25 has a bore .26

2,724,840 Patented Nov. 29, 1955 2 extending longitudinally therethrough from the interior of the bowl portion 15 to the exterior of the extension 17 at the surface of the extension most remote from the bowl portion lS. v V

The bore 26 is of 'sufficient cross sectional area to provide an adequate flow of air from the interior to the exterior of the bowl and its end within the bowl is disposed above the normal water level in the bowl, as indicated at 27, but below thetop internal flange 28 which provides the water channel 23. v j

A lip 29 is formed on the inner surface of the bowl portion 15 at the top of the end of the bore 26 opening into the bowl and this lip is inclined downwardly and inwardly of the bowl to prevent water from the channel 23 flowing into the inner end of the bore 26 of the duct 25 and also to conceal the inner end of the bore 26 from view. The duct 25 is spaced from the walls of the chamber 18 and declines toward the bowl portion 15. 7

An exhaust stack 30, such as a length of suitable thin walled pipe or tubing, is vertically mounted in the partition wall 13 between the opposite wall surfaces and terminates at its lower end at a level slightly above the outer end of the bore 26. -An elbow fitting 31 extends through the side of partition wall 13 adjacent the toilet bowl -1'1 and has one end disposed within the 'wall and telescopically received in the lower end of the exhaust or vent stack 30. The other end of the elbow fitting 31 is inserted into the outer end of the bore 26 and secured therein by a suitable expansion joint.

The expansion joint may comprise an external annular flange 32 on the end of the fitting 31 received within the bore 26, a sleeve 33 of elastic material, such as vulcanized rubber, surrounding the fitting adjacent the flange 32, a washer 34 surrounding the fitting at the end of the sleeve 33 remote from the flange 32 and a nut 35 threaded onto an externally screw threaded portion of the fitting and bearing against the washer 34 to compress the sleeve 33 longitudinally and expand it radially in the corresponding end portion of the bore 26 and thereby firmly secure the corresponding end of the elbow fitting 31 in the bore 26 with an airtight seal.

A flat pad 36 of elastic material, such as vulcanized rubber, is secured to the under surface of the toilet seat 37 and extends entirely around the under surface of the toilet seat except for an opening 38 at the front of the seat. When the seat is lowered onto the top surface of the bowl portion 15 and the seat cover 39 is lowered onto the seat the bowl is closed except for the ventilating opening 38. Air may flow through the opening 38 into the bowl above the water in the bottom of the bowl and out of the bowl through the bore 26 of the ventilating duct 25 and through the elbow fitting 31 to the exhaust stack 30 through which it flows to the exterior of the building in which the toilet bowl is installed.

The air duct structure 25 does not utilize any portion of the flushing system of the toilet bowl for ventilation nor in any way change the capacity of the flushing system since the extension 17 may be enlarged to provide a water chamber 18 as large as or larger than the corresponding water chamber provided in an unventilated toilet bowl and the enlarged extension will provide a better support for the flush tank 20 mounted thereon.

In the modified arrangement illustrated in Figure 3, the duct structure 25 is first provided as a separate tube 40 of suitable material, such as the ceramic material of which the toilet bowl is formed and is provided at one end with an outwardly inclined lip 41 which corresponds to the lip 29 of Figure 1.

In manufacturing a toilet bowl with the separate duct structure 40, the preformed tubular duct is merely set in place in the form or mold in which the toilet bowl is formed before the material to form the toilet bowl is placed in the mold and, as the material forming the bowl is placed in the mold the duct structure is molded into the toilet bowl and is permanently secured therein when the material forming the bowl is heat hardened.

The invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claim rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claim are, therefore, intended to be embraced therein.

What is claimed is:

A toilet comprising a base portion and a bowl portion, said base portion having a trap therein, said trap having a discharge end adapted and arranged to be connected to a sewer line, said bowl portion having a bottom and a top and being extended upwardly from said base portion and being connected at its bottom with said trap, a rearwardly extending extension on said bowl portion having a water chamber therein, said chamber having an upper end and a lower end, a conduit tapering in cross section being connected at its end having the largest cross section to said chamber at its lower end and at its other end to said bowl portion adjacent the bottom thereof, said chamber having a second conduit opening into its upper end and adapted and arranged to be connected to a source of water under pressure, a tubular air duct traversing said chamber and opening at one end into said bowl portion and spaced from said bottom and said top, said air duct at its other end remote from said bowl portion being adapted and arranged to be connected to a flue, said air duct declining toward said bowl portion, a seat having a top and bottom surface hingedly secured to the top of said bowl portion, said seat having a resilient pad on its bottom surface engageable with the top of said bowl portion when in closed condition, and said pad having a cutaway portion defining a relatively small air opening at the side opposite said extension when closed, providing for flow of air into said bowl portion and to said air duct.

References Citedin the file of this patent UNITED STATES PATENTS 470,740 Bluhm Mar. 15, 1892 688,234 Brown Dec. 3, 1901 704,471 Brown July 8, 1902 936,561 Pennington Oct. 12, 1909 1,177,384 Cochran Mar. 28, 1916 1,211,137 Grant Jan. 2, 1917 1,213,113 Lange, Jr. Jan. 16, 1917 1,861,501 Lowther June 7, 1932 1,885,715 Hanson Nov. 1, 1932 2,058,436 Friel Oct. 27, 1936 2,396,371 Harbeke Mar. 12, 1946 2,452,282 Auer Oct. 26, 1948 FOREIGN PATENTS 3,019/1903 Great Britain June 4, 1903 OTHER REFERENCES Louis Lipp Company Catalog H.

Images