US3212105A

US3212105A - Submergible swimming pool change room

Info

Publication number: US3212105A
Application number: US344504A
Authority: US
Inventors: Meredith H Baker; Charles D Thomason; James A Bullard
Original assignee: Individual
Current assignee: Individual
Priority date: 1964-02-12
Filing date: 1964-02-12
Publication date: 1965-10-19
Anticipated expiration: 1982-10-19

Description

Oct. 19, 1965 M. H. BAKER ETAL 3,212,105

SUBMERGIBLE SWIMMING POOL CHANGE ROOM Filed Feb. l2, 1964 4 Sheets-Sheet l Oct. 19, 1965 M. H. BAKER ETAL 3,212,105

SUBMERG'IBLE SWIMMING POOL CHANGE ROOM 4 Sheets-Sheet 2 Filed Feb. l2, 1964 4 Sheets-Sheet 3 M. H. BAKER ETAL SUBMERGIBLE SWIMMING POOL CHANGE ROOM Oct. 19, 1965 Filed Febn 12,

UCL 19, 1965 M. H. BAKER ETAL 3,212,105

SUBMERGIBLE SWIMMING POOL CHANGE ROOM INVENTORS /WEQfp/rf/ 94A/EQ, H4/255 D. @OM/4x44 J4/W5S z/mp/ United States Patent O 3,212,105 SUBMERGHBLE SWHMMENG PL CHANGE RN Meredith H. Baker, 6900 Eastondale Ave., Long Beach, Calif.; Charles D. Thomason, Long Beach, Calif. (18321 Gridley Road, Dairy Valley, Calif.); and .lames A. Bullard, Long Beach, Calif. (1312 S. Washington, Compton, Calif.)

Fiied Feb. 12., 1964, Ser. No. 344,564 1S Claims. (Cl. 4 1) This invention relates to a combined change room and lavatory particularly adapted to be positioned adjacent a swimming pool for the purpose of providing convenicnt and inexpensive lavatory and clothes changing facilities for persons using the swimming pool.

During the past few years there has been a tremendous increase in the number of private swimming pool installations. One of the problems associated with private swimming pools which has not been satisfactorily solved prior to the present invention is the lack of convenient, inexpensive, and practical lavatory and clothes changing facilities for those using the swimming pool. As a result, guests, as well as the home owner, must use the facilities within the home, thereby tracking in dirt, dripping water, and causing in general a situation of inconvenience to all concerned.

Furthermore, any lavatory or toilet facilities which might be provided for use adjacent private swimming pools would normally involve the laying of expensive sewer lines using expensive sewer pipe which would extend from the rear of the. house, where the swimming pool would normally be located, to the front of the house where the sewer connection is usually provided for the residence.

Also, any lavatory or clothes changing facilities which might be provided adjacent a residential swimming pool would normally involve the provision of a building construction which would be aesthetically unpleasant and which would not blend harmoniously with the surrounding landscape.

Accordingly, it is an object of this invention to provide a combined lavatory and clothes changing room adapted to be installed adjacent private swimming pools and the like which is adapted for easy assembly and installation at the desired site.

It is another object of the invention to provide a combined lavatory and change room for installation adjacent swimming pools and the like which is retractable into a well when not in use in such manner as to be imperceptible and to blend with the surrounding landscaping, and which may be elevated to an above ground position when in use.

It is another object of the invention to provide a combined lavatory and change room for installation adjacent swimming pools and the like which is movable from a retracted position beneath the ground level to an aboveground position by hydraulic notation means.

It is another object of the invention to provide a combined lavatory and change room for installation adjacent swimming pools and the like which provides clothes changing, toilet, and shower facilities which eliminate the need for using such facilities inside the residence.

It is a further object of the invention to provide a combined lavatory and change room for installation adjacent private swimming pools which utilizes inexpensive sewer piping connections to the nearest sewer stub-out.

Further objects and advantages of the invention will become apparent from the following description taken in conjunction with the accompanying drawings in which FIG. l is a View partially in elevation and partially in ice section of a swimming pool change room and lavatory in accordance with the invention;

FIG. 2 is a view taken substantially along line 2-2 of FIG. 1;

FIG. 3 is a view in elevation and partially in section showing the swimming pool lavatory and change room retracted into the well;

FG. 4 is a View in horizontal section along line 4-4 of FIG. 3;

FIG. 5 is a top plan view, partially schematic, of the change room and lavatory; and showing schematically the plumbing and electrical connections for the change room;

FIG. 6 is a View, partially broken away, and partially in section, showing the iloat which controls energization of the sewage pump motor in response to sewage level;

FIG. 7 is a view in section showing the interlocking tongue-and-groove construction of the sections of the change room;

FIG. 8 is a view, partially in elevation, and partially in section, showing details of the Wall construction of the change room.

In achievement of these objectives, there is provided in accordance with this invention a combined swimming pool change room and lavatory, including a four-walled enclosure mounted upon a pontoon assembly and received in an excavated concrete-walled well. The change room is movable to a retracted position in the well when water is withdrawn from the well by a pump located in a removable housing in the well, and is moved by otation to an elevated above-ground position when the well is filled to a predetermined level with water by opening a valve in the water inlet line to the well. The change room also includes a roof which is adapted to completely cover the upper end opening of the well when the change room is in its fully retracted position. The roof of the change room is covered with tlagstone, plantings, or the like, in such manner that when the change room is in fully retracted position within the well the roof thereof blends imperceptibly with the swimming pool decking or other area surrounding the swimming pool. The change room is made of sectionalized construction to permit ease of transportation and assembly.

The change room is provided with toilet, washbowl, and shower facilities, and flexible pipes connect the various plumbing devices to permanent hot and cold water inlets in the walls of the well. The sewage and drain water from the change room are drained into one of the pontoons. Pumping means responsive to the level of sewage in the pontoon is provided to pump the sewage and drain water through a flexible pipe to a sewage outlet in the well wall. The sewage and drain water then pass through another ilexible pipe buried in a shallow trench to a stub-out of the main sewer pipe. Means is also provided for force ushing the lleXible sewer pipe.

Referring now to the drawings, and more particularly to FIG. l, the combined change room and lavatory of the invention is generally indicated at 10 and includes a front Wall 12 having a door 14 and a window 16 therein, a rear wall 18, and left and right end walls 2@ and Z2 respectively. A screened Ventilating opening 29 is provided in end wall 22. The change room also includes a flat roof 23 made of weatherproof plywood or other suitable material, and a iloor 24. The roof 23 and floor 24 are each forme-d in two mating front and rear sections which are joined to each other by tongue-andgroove joints of the type shown joining floor sections 24a and 24b in FIG. 7 along the joint lines 27 of FIG. 4.

Change room 10 is provided on the interior thereof with lavatory and toilet facilities which will be described in more detail hereinafter. Change room 10 also has mounted beneath the lloor 24 a ponto-on structure general- 1y indicated at. 2S, the details of which will also be described' later, which permits the change room to be elevated to an above-ground position as shown in FIG. 1 by hydraulic ilotation by means of water introduced into the well generally indicated at 26, the change room being retractably movable into the well to a position shown in FIG. 3 when water is withdrawn from the well 26 as will be described hereinafter.

Well 26 is of concrete construction and includes four bounding

walls

28, 30, 32, and 34 which are respectively parallel to

walls

12, 18, 20, and 22 of the change room. A retaining wall 35 formed of redwood or other suitable material extends around the upper end of well 26. The depth of the well 26 is such that the change room may be moved to a completely retracted position as shown in FIG. 3 in which the at roof 24 of the change room is flush with the ground surface or with the decking 36 of the swimming pool and completely covers the well opening.

As best seen in the view of FIG. 5, the roof 24 of the change room may have aixed thereto tlagstone 37, plantings, or the like, to conform to the appearance of the decking of the swimming pool, or to the other area surrounding the change room installation, so that when the change room is in retracted position, the roof 24 otI the change room blends imperceptibly into the pattern of the surrounding decking 36 or into the surrounding landscape. In fact when the excavation is made for well 26, a suitable section of the swimming pool decking may be removed by cutting with cement cutting saws, and saving the cut section for replacement later on the roof 24 of the change room. The opposite end walls 20 and 22 of the change room are provided with vertically extending male guide members both indicated at 38 and the

corresponding walls

28 and 30 of well 26 have female guide members, both indicated at 40, projecting inwardly to receive the male guide members 3S. The cooperating

guide members

38 and 40 guide the change room 10 and its attached pontoon structure 25 during its vertical elevating or retracting movement to be described.

The lateral dimensions of each of the walls or

sides

12, 18, 20, 22 of change room 10 are less than the lateral dimensions of the corresponding walls of well 26, and in order to` bridge the space between the change room and the adjacent decking of swimming pool 26 when change room 10 is in elevated position, foot boards 42 are suitably connected by hinges 44 to the surfaces of each of 'the walls of the change room as best seen in the views of FIGS. 1 yand 2. When the change room is in its retracted position within the well, hinge boards 42 are suitably secured in raised position by the toe 47 of pivoted locking levers 46 which are raised to lie in a substantially horizontal plane to retain their corresponding hinge boards 42 in elevated inoperative position. When the change room is in its elevated position as shown in the views of FIGS. 1 and 2, side boards 42 are moved downwardly to a horizontal position in which the outer edges of the side boards rest on the decking 36 of the swimming pool.

As best seen in the views of FIGS. 1 and 2, pivoted locking levers 46 are swingably movable downwardly about their respective pivotal axes 48 into locking engagement with the upper surface of the footboards to retain the footboards in the horizontal position shown in FIGS. 1 and 2 while the change room is in elevated position.

As best seen in the view of FIG. 8, the various walls of the change room include a studding framework 21, an exterior panelling 21a, and an interior panelling 2lb. Suitable slots 21C are provided in the interior panels 2lb to facilitate the addition of weights such as lead shot in the hollow wall space to facilitate the final balancing of the change room to secure proper flotation thereof. The exterior wall panels 21a are constructed of light weight panel materials of the type employed in the construction of house trailers, using colorful exterior panels.

The inte-rior arrangement of change room 10 is best understood by reference to the views of FIGS. 3 and 4. A toilet bowl 52 is mounted on floor 59, and a water closet 54 for bowl 52 is mounted on the adjacent rear wall 18 of the change room. A washbowl 56 is also mounted on rear wall 18 of the change room. A second water closet 58 is mounted on wall 18 and is connected by pipe 88 to the discharge pipe 74 leading from sewage pump 70, to be described hereinafter. Auxiliary water closet 58 may be discharged to provide a force flushing of ilexible sewage pipes 75 and 90 as will be described hereinafter. A mirror 60 is mounted on wall 18 below water closet 58. A bench 61 may be supported on the oor of the change room. A shower stall generally indicated at 62 having a shower head 63, and provided with a iioor of tile or other suitable material, is also positioned in change room 10 in the corner formed by rear wall 18 and right end wall 22.

Water closets

54 and 58, washbowl 56, and the shower head 63 are all suitably connected to cold water line 112 by branch line 112a which is connected to a permanent fitting in the well wall. Wash bowl S6 and shower head 63 are also connected to hot water line 115, which is an insulated line extending underground from the nearest hot water heater to a permanent connection in the well walll, Suitable exible conduits are provid-ed between the permanent hot and cold water connections in the well wall and the corresponding outlets in the change room.

The pontoon assembly generally designated at 25 includes three vertically superposed independent pontoons 25a, 25b, and 25C, respectively. The uppermost pontoon 25a is located immediately beneath the floor 24 of the change room and serves as a receiver for the sewage discharged from toilet 52 and for the drain water from wash bowl 56 and shower stall 62. A discharge pipe 64 connects toilet bowl 52 to pontoon 25a; a drain pipe 66 connects wash bowl 36 to pontoon 25a; and drain pipe 68 provides a drain connection from shower stall 62 to pontoon 25a. Formed or standard P traps may be used wherever necessary in the plumbing connections to prevent odors from backing up into the change room.

The intermediate pontoon 25b houses a sewage pump generally indicated at 70 having an inlet pipe 72 which communicates with the interior of pontoon 25a, whereby the sewage in pontoon 25a is drawn into the intake of sewage pump 70. Sewage pump 70 is of the non-clogging type, having comparatively large openings between the vanes of its impeller. The vanes of the pump are well rounded at their entrance ends to prevent clogging with toilet tissue or by the sewage. Sewage pump 70 also includes outlet pipe 74 through which pump 70 discharges to a flexible duct 75 which may be made of tiexible rubber, plastic, or the like. The opposite end of exible duct 75 is connected into a permanent outlet fitting 76 in the wall of welll 26. Fitting 76 may be a short section of standard bell and spigot sewer pipe. The opposite end of bell and spigot fitting '76 is connected to a exible conduit 90 which, in turn, is connected to the sewer stub-out which is usually located in front of the residence. The liexible pipe is laid in a shallow trench about 6 inches deep in such manner as to have a gentle fall along its length, and is permanently connected to the sewer stub-out. Pipe 90 may be of medium diameter, about 11/2-2 inches in diameter.

Pump 70 is driven by a suitable electrical motor which is connected to electrical power by power lines 78 and 8) in series with a switch 82 which is operated by a float member 84 which floats on the sewage in pontoon section 25a. When iioat 84 rises to a predetermined level, it actuates toggle switch 82. to close the electrical circuit of the electrical motor which drives sewage pump 70. Switch 82 and ball oat 84 are operatively connected together by a two-part connecting rod generally indicated at 86, including sections 86a and 8617 having externally threaded ends which are received in an internally threaded adjusting coupling 86e to permit adjustment of the total length of rod 86. The upper end of upper rod section 86h is pivotally connected to a link 87 which, in turn, is pivotally connected to the actuating lever S9 of toggle switch 82.

Connecting rod 86 extends from pontoon 25a through lloor 24 and into the change room, since switch 82 is located in the change room at some position such as the outer surface of the shower stall wall. Rod 86 is guided in its passage through floor 24 by a sleeve or bushing 99, preferably an expansion type bushing including a felt or sponge rubber bearing surface to prevent odors from pontoon 25a from rising up into the change room. Bushing 99 is secured in position in the floor by a suitable clamp or sleeve 101 secured to the floor joist.

A drip type deodorant dispenser may be placed on the wall of the change room and so positioned that the contents of the dispenser drip into the pontoon 25a which receives the sewage.

Hydraulic flotation system for swimming pool change room As best seen in the view of FIG. 4, the swimming pool change room is surrounded on all sides by a space generally indicated at 91 which defines a flooding region to receive water between the walls of the well 26 and of the change room for the llotation of the change room in the well.

Positioned in the corner' of the well 26 bounded by the left end wall 28 and the rear wall 34 of the well, and extending for substantially the entire height of the Well is a removable housing 92 for the well pump 94. A suitable electric motor 95 drives pump 94. Pump 94 includes an inlet pipe 97 which projects into the flooding region 91 of the well. At the lower end thereof, removable container 92 is provided with a pin-like projection 96 which is received in the recess 98 in the bottom wall of Well 26. Container 92 is bolted to the rear wall 34 of the well. Pump 94 is provided with a discharge pipe 100 which is connected at its upper end into a clean water discharge line 102. Line 102 may be connected to an existing sprinkler system or garden sprayer so as to utilize the clean water discharged from the well by the pump 94. A suitable control box generally indicated at 104 (FIG. 5) having a hinged cover 106 is located ilush with the ground surface and is generally similar to a conventional water meter housing. Control box 104 includes a control switch 10S connected in series with the electric power supply lines 109a, 10911 for electric motor 95 which drives well pump 94. A suitable gate valve 110 is also positioned inside of control box 104 and is connected in the cold water inlet line 112 so that fresh cold water is discharged into the llooding region 91 of the well when valve 110 is opened. A suitable padlock may be provided on control box 104 to insure against unauthorized opening ofthe control box.

Installation of change room In constructing the swimming pool change room, if the site selected for the change room is in the general area of the decking of the pool and is provided with llagstone or the like, a suitable section of the decking may be removed by cutting with cement cutting saws. The cut section may be saved for replacement on the change room roof later. The excavation necessary for the well is then dug and forms for the concrete walls of the well are placed in the excavation. Provision is made when casting the concrete walls for the various plumbing and electrical outlets. Concrete is poured into the forms to form the walls of the well. The female guides 40 are suitably positioned prior to pouring of the concrete. Each half roof and half iloor section of the prefabricated change room and the walls of the change room are then wheeled through the backyard gate. The sections of the change room are then assembled and secured together by bolts,

nails, or screws, as desired. The exposed joints are caulked and covered with a suitable exterior trim to ready the change room for installation into the concrete well 26. The interior forms of the well are then removed. Control box 104 is installed at a suitable location, and the electric, water, and sewer lines are then installed at the proper locations in the walls of the well. The removable housing 92 for the well pump 94 with the pump positioned therein is then installed and secured to the rear wall of the well by bolts. Water is then admitted into the well by opening valve in the cold water inlet line 112 to admit water into the well. Change room 10 is then rolled up on planking over the well, suspended from a tripod or other suitable device, and gently lowered until the pontoon assembly 25 beneath the change room provides the necessary flotation for the change room. Balancing for equal weight distribution to maintain level floating of the change room would have been previously done during manufacture of the change room, but further balancing may also be done at the site, if necessary. Flexible sewer pipe 75 and flexible hot and cold water lines are then connected to the proper fixtures of the change room 10 or its attached pontoon structure. Pump 94 in removable pump housing 92 is then started and change room 10 is gently lowered as the level of water in the well lowers, until change room 10 finally reaches the position shown in FIG. 3 in which the lowermost pontoon 25e rests on the bottom of the well. The water which is pumped out by pump 94 as the change room is lowered is put to a useful purpose by being run through the garden sprinkler system or the like, which may be connected to the discharge line 102 to which pump 94 is connected. With the change room 10 resting on the bottom of the well, the previously cut llagstone removed from the pool decking may then be installed on the root of the change room, or suitable plantings, or a rock garden may be installed on roof 23 of the change room.

When in use by the owner, gate valve 110 in control box 104 is opened to ilood the well, thereby raising the change room to the proper height. When the change room is elevated to the proper height, the gate valve is then turned oil and foot boards 42 are let down about their hinged connections and secured in position by locking levers 46. The change room may be left in its elevated position for as long a period as desired. Guests could enter the change room, llush the toilet, use the wash basin, take a shower, and upon entrance of water or sewage into pontoon section 25a, the lloat S4 therein would be raised automatically turning on switch 82 to energize the electric motor which drives the non-clogging sewage pump 70. Pump 70 continues pumping as long as the level of the sewage in pontoon 25a is suilicient to maintain float 84 in sufficiently elevated position to maintain switch 82 actuated. As the sewage level falls in pontoon 25a, switch S2 controlling the motor of sewage pump 70 is de-energized. As often as desired, the owner or user of change room 10 could activate the water closet 58 and discharge the Water therefrom through flexible sewage lines 75 and the connected sewage line 90. The force of the water from water closet 58 tlushes the sewage lines 75 and 90 of any materials which might tend to clog these lines. This forced llushing action is of particular value in llushing lexible sewer pipe 90, which lays in a shallow trench and which has only a relatively slight downward incline toward the stub-out of the main sewer line which is usually located in the street in front of the residence.

When it is desired to lower the change room 10 into the well, pump 94 is placed in operation by energizing the electric pump motor 95. Pump 94 pumps the water out of well 26, thereby causing change room 10 to gradually drop to the bottom of well 26 to the position of FIG. 3 in which the roof 23 of the change room is tlush with the decking 36, or with the ground surface. When the change room reaches its fully retracted position, pump motor 95 is de-energized, either by manually moving the control switch for motor 95 to de-energize the motor, or by use of a suitable limit switch which is actuated when the change room reaches its fully retracted position.

It can be seen from the foregoing that there is provided in accordance with this invention a change room for installation adjacent private swimming pools and the like which has great utility and which permits the owner or guests using the swimming pool to change clothes, and to use the toilet, washing, and shower facilities provided by the change room without the necessity of entering the residence, thereby eliminating the tracking in of dirt, the dripping of water, and the inconvenience generally associated with the use of swimming pools. Furthermore, the retractable construction of the change room permits the change room to be entirely retracted into an aesthetically pleasing out-of-sight position into its receiving well when the change room is not in use. Furthermore use of shallow trench liexible sewer piping eliminates the digging of deep sewer lines, and is inexpensive in material cost and in installation. The sectionalized construction of the change room also permits the sections of the change room to be wheeled through the average back yard gate and put together at the site desired.

While there has been shown and described a particular embodiment of the invention, it will be obvious to those skilled in the art that various changes and modifications may be made therein without departing from the invention and, therefore, it is aimed to cover all such changes and modifications as fall within the true spirit and scope of the invention.

What is claimed is:

1. A change room and lavatory adapted to be located adjacent a swimming pool or the like, comprising a walled enclosure adapted to float and having a roof thereon and including a doorway thereto, a well extending below ground level, said enclosure being positioned in said well and vertically movable therein, said well including means withdrawing water from said well, said Well and said enclosure being so dimensioned that when said enclosure is fully retracted into Said well said roof is substantially fiush with the ground surface, and means introducing water into said well for elevating said enclosure to a position in which at least a substantial portion thereof projects above the ground level.

2. A change room and lavatory as defined in claim 1 in which said enclosure and said well include cooperating guide means for insuring vertical movement of said enclosure.

3. A change room and lavatory as defined in claim 1 including toilet and washing facilities therein, and exible water supply and sewage pipes connecting said toilet and washing facilities to corresponding fixtures in the walls of said well.

4. A change room and lavatory as defined in claim 1 in which said walled enclosure is of prefabricated sectionalized construction adapted to be easily transported to and assembled at the site of installation.

5. A change room and lavatory adapted to be located adjacent a swimming pool of the type having a decking about the pool, comprising a walled enclosure adapted to float and having a roof thereon and including a doorway thereto, a well extending below the level of the decking of the swimming pool, said enclosure being positioned in said well and vertically movable therein, said well and said enclosure being so dimensioned that when water is withdrawn from said well, said enclosure is fully retracted into said well and said roof is substantially ush with the swimming pool decking, and means introducing water into said well for elevating said enclosure to a position in which at least a substantial portion thereof projects above the swimming pool decking.

6. A change room and lavatory adapted to be located adjacent a swimming pool or the like, comprising a floatable walled enclosure having a base and roof thereon and including a doorway thereto, a well extending below ground level, said oatable enclosure being positioned in said well and vertically movable therein, said well and said fioatable enclosure being so dimensioned that when said enclosure is fully retracted into said well by means withdrawing water from said well, said roof is substantially fiush with the ground surface, and means for elevating said floatable enclosure by hydraulic flotation including introducing water into said well to a position in which at least a substantial portion thereof projects above the ground level.

7. A change room and lavatory adapted to be located adjacent a swimming pool or the like, comprising a walled enclosure having a roof thereon adapted to fioat and including a doorway thereto, a well extending below ground level, said enclosure being positioned in said well and vertically movable therein, said well and said enclosure being so dimensioned that when water in said well is withdrawn, said enclosure is fully retracted into said well and said roof is substantially flush with the ground surface, pontoon means mounted on the undersurface of said enclosure, and means for elevating said enclosure by hydraulic iiotation including introduction water into said well to a position in which at least a substantial portion thereof projects above the ground level.

8. A change room and lavatory adapted to be located adjacent a swimming pool or the like, comprising a walled enclosure having a roof thereon adapted to fioat and including a doorway thereto, a well extending below ground level, said enclosure being positioned in said well and vertically movable therein, said well and said enclosure being so dimensioned that when said enclosure is fully retracted into said well upon the withdrawal of water from said well, said roof is substantially flush with the ground surface, means for admitting water into said well for elevating said enclosure by hydraulic flotation to a position in which at least a substantial portion thereof projects above the ground level, and means for withdrawing water from said well to cause said enclosure to move to a fully retracted position in said well.

9. A change room and lavatory as defined in claim 8 including a pump means mounted in said well for withdrawing water from said well, said pump means being enclosed within a removable container, and means removably securing said container in said well.

10. A change room and lavatory adapted to be located adjacent a swimming pool or the like, comprising a walled enclosure having a roof thereon and including a doorway thereto, a well extending below ground level, said enclosure being positioned in said well and vertically movable therein, said well and said enclosure being so dimensioned that when said enclosure is fully retracted into said well said roof is substantially fiush with the ground surface, pontoon means mounted on the undersurface of said enclosure, said change room and lavatory having toilet and washing facilities therein, plumbing lines connecting said toilet and washing facilities to discharge into said pontoon means, exible sewage pipe means connecting said pontoon means to an outlet fixed in a wall of said well, and means for elevating said enclosure by hydraulic flotation to a position in which at least a substantial portion thereof projects above the ground level.

11. A change room and lavatory as defined in claim 10 including sewage pump means mounted in said pontoon means, said sewage pump means being connected to said flexible sewage pipe means.

12. A change room and lavatory as defined in claim 10 including flexible inlet water pipes connecting said toilet and washing facilities to corresponding fixtures in the walls of said well.

13. A change room and lavatory as defined in claim 10 including an auxiliary flush tank positioned in said change room, and plumbing line means connecting said auxiliary ush tank to said flexible sewage pipe means whereby to provide a force ilushing of said flexible sewage pipe means.

14. A change room and lavatory as dened in claim 10 in which said flexible sewage pipe means is connected to one end of a flexible sewer line, said flexible sewer line being installed in a shallow trench in the ground and being connected at its opposite end to the main sewer line in the adjacent street or the like.

15. A change room and lavatory as defined in claim 14 including means for force flushing said exible sewage pipe and said exible sewer line connected thereto.

References Cited bythe Examiner UNITED STATES PATENTS 592,190 10/97 Bond 50-100 3,008,435 11/61 Dupuy 109-1 OTHER REFERENCES Popular Science publication: Building to Duck Underground, March 1954; p. 171, coply in Group 470.

LEWIS J. LENNY, Primary Examiner.

SAMUEL ROTHBERG, Examiner.

Claims

1. A CHANGE ROOM AND LAVATORY ADAPTED TO BE LOCATED ADJACENT A SWIMMING POOL OR THE LIKE, COMPRISING A WALLED ENCLOSURE ADPATED TO FLOAT AND HAVING A ROOF THEREON AND INCLUDING A DOORWAY THERETO, A WELL EXTENDING BELOW GROUND LEVEL, SAID ENCLOSURE BEING POSITIONED IN SAID WELL AND VERTICALLY MOVABLE THEREIN, SAID WELL INCLUDING MEANS WITHDRAWING WATER FROM SAID WELL, SAID WELL AND SAID WNCLOSURE BEING SO DIMENSIONED THAT WHEN SAID ENCLOSURE IS FULLY RETRACTED INTO SAID WELL SAID ROOF IS SUBSTANTIALLY FLUSH WITH THE GROUND SURFACE, AND MEANS INTRODUCING WATER INTO SAID WELL FOR ELEVATING SAID ENCLOSURE TO A POSITION IN WHICH AT LEAST A SUBSTANTIAL PORTION THEREOF PROJECTS ABOVE THE GROUND LEVEL.