US3839745A - Lavatory accommodation - Google Patents

Lavatory accommodation Download PDF

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Publication number
US3839745A
US3839745A US00267684A US26768472A US3839745A US 3839745 A US3839745 A US 3839745A US 00267684 A US00267684 A US 00267684A US 26768472 A US26768472 A US 26768472A US 3839745 A US3839745 A US 3839745A
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US
United States
Prior art keywords
liquid
compartment
sanitary
enclosure
flushing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00267684A
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English (en)
Inventor
J Bramall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Portasilo Ltd
Original Assignee
Portasilo Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Portasilo Ltd filed Critical Portasilo Ltd
Application granted granted Critical
Publication of US3839745A publication Critical patent/US3839745A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D5/00—Special constructions of flushing devices, e.g. closed flushing system
    • E03D5/016—Special constructions of flushing devices, e.g. closed flushing system with recirculation of bowl-cleaning fluid

Definitions

  • a chemical service unit removably connected or incorporated in portable lavatory accommodation comprises a chemical liquid container divided by a filter screen into a first compartment containing clear liquid and a second compartment receiving discharge from the accommodation.
  • a continuously operable pump draws off flushing liquid from the second compartment and delivers it to cisterns; a by pass connection including a pressure relief valve passes liquid to the first compartment and creates the necessary back pressure in the flushing liquid.
  • An air pump forces air into a perforated tube on the floor of the second compartment to provide air bubbles for breaking up soil.
  • This invention relates to temporary or semipermanent lavatory accommodation in the form of cabins, huts and like structures housing one or more sanitary pans, for use for example on building sites, exhibition grounds, camp sites and car parks i.e., in all manner of circumstances where pennanently installed sanitary facilities are not normally available.
  • the invention provides a service unit for a structure of the kind described,
  • a container for chemical liquid which is divided into two compartments between which the said liquid is able to pass via a filter screen
  • means for connecting a first one of said compartments to receive the discharge from a sanitary pan or pans of such a structure means including a continuously operable powerdriven pump connected so as to draw liquid from the second one of said compartments for flushing said pan or pans, and a by-pass connection between the pressure side of said pump and said container.
  • the said first one of the two compartments is connected to receive the discharge from sanitary pan or pans of a unit of the kind described,
  • the flushing liquid may be delivered to fill a cistern associated with the or each pan in the conventional manner or alternatively, for example, it may be delivered directly into the pan upon the opening of a manually controlled flushing valve.
  • the said by-pass connection from the pump to the container will be so arranged as, in operation, to create a back pressure sufficient to enable the flushing liquid to pass to the said pan or pans when desired.
  • this effect could be achieved simply by making the by-pass passage of sufficiently narrow bore to create the desired back pressure.
  • the by-pass passage is provided with valve means arranged to automatically close such passage when flushing liquid is to be passed to the pan or pans, e.g.-, in the form of a pressure operated relief valve.
  • the said by-pass connection leads the liquid back to the said first compartment of the container so as to bring about a substantially continuous circulation of liquid from the first compartment to the second whilst the pump is operating, which helps to break up soil in the first compartment: the by-pass connection may alternatively lead back to the second compartment however.
  • the said container for chemical liquid preferably has, for convenience in'fitting to a structure of the kind described incorporating more than one sanitary pan, a single inlet communicating with the said first compartment' which is connectible to receive the discharge from all the sanitary pans of the structure.
  • a single inlet communicating with the said first compartment' which is connectible to receive the discharge from all the sanitary pans of the structure.
  • several such inlets can be provided if desired, each inlet being adapted for connection to the discharge of a single sanitary pan.
  • the said container for chemical liquid which clearly constitutes the major part of a service unit according to the invention, may be arranged for association with a structure of the kind described in any convenientmanner, depending largely on the arrangement of the structure itself.
  • the container is adapted to be situated under the floor of the structure; it could then be suspended from the floor but preferably the container is adapted to form an underneath support, of a plinthlike nature, on which the said structure sits.
  • the container When adapted to be so situated the container will be of shallow depth relative to its configuration as seen in plan, which latter configuration may conveniently be such as to correspond to that of a structure to whichthe unit is to be applied.
  • the said container and its associated parts as a unitary assembly for connection to a structure of the kind described is advantageous in that it permits the addition of such units to existing structures of the kind described, and also permits the ready replacement of faulty units.
  • the scope of the invention also extends, however, to such structures which incorporate apparatus embodying the principles of the invention other than in unitary form, and thus viewed from another aspect the invention provides a structure of the kind described incorporating a container for chemical liquid which is divided into two compartments between which the said liquid is able to pass via a filter screen, a first one of said compartments being connected to receive the discharge from a sanitary pan or pans of the structure, and means including a continuously, operable power-driven pump connected so as to draw liquid from the second one of said compartments for flushing said pan or pans, and a by-pass connection between the pressure side of said pump and said container.
  • Such a structure may of course further incorporate any of the preferred but optional features already mentioned. in particular the said container for chemical liquid may conveniently be situated beneath the floor ofthe structure
  • a small pot type strainer is provided in the flushing liquid flow line outside of the said container, on either side of the said pump, to permit periodic inspection of the liquid emanating from the said second compartment, to check on the efficiency of the aforementioned filter screen.
  • an openable inspection chamber is preferably provided, as an exten-' sion of the said first compartment of thecontainer, to
  • an overflow outlet is provided from the said second compartment, which may be connected to a soak-away in use so as considerably to reduce the frequency with which the container has to be emptied and re-filled.
  • Such agitating means takes the form of means for continuously blowing streams of air bubbles into the said compartment at a multiplicity of spaced locations adjacent its floor.
  • such means comprises a continuously operablepower-driven air pump mounted outside of the container and arranged to feed air to a perforated tube extending along the floor of the said first compartment.
  • the invention provides a structure of the kind described incorporating a container for chemical liquid which is divided into two compartments between which the said liquid is able to pass via a filter screen, a first one of said compartments being connected to receive the discharge from a sanitary pan or pans of the structure, means for flushing the said pan or pans with liquid from the second one of said compartments, and means for continuously blowing streams or air bubbles into the said first compartment at a multiplicity of spaced locations adjacent its floor so as to agitate and break up soil in the said compartment in use.
  • Such means may of course take the preferred form mentioned above.
  • the invention pro vides a service unit for a structure of the kind described comprising a container for chemical liquid which is divided into two compartments between which the said liquid is able to pass via a filter screen, means for connecting a first one of said compartments to receive the discharge from a sanitary pan or pans of such a structure, means for flushing the said pan or pans with liquid from the second one of said compartments, and means for continuously blowing streams of air bubbles into the said first compartment at a multiplicity of spaced locations adjacent its floor so as to agitate and break up soil in the compartment in use.
  • FIGS. 1, 2 and 3 show respective end, side and plan views of a service unit according to the invention.
  • FIG. 4 shows the service unit in combination with a structure of the kind described.
  • container 1 has a sealed cover and is painted inside and out with bituminised paint.
  • a perforated steel filter screen 2 divides the container into a first compartment 3 and a second compartment 4; the screen 2 may alternatively be of aluminum alloy, or nonmetallic material such as a suitable plastics.
  • Compartment 3 has an inlet 5 for connection as at 31 (see FIG. 4), in use, to receive the discharge from the sanitary pans of a structure 30 of the kind described.
  • a plastics tube 6 perforated at a multiplicity of spaced locations extends along the length of compartment 3 and is secured adjacent the floor of compartment 3. The end of tube 6 is enclosed by one end piece 7. Air can be forced into tube 6 by a continuously operable diaphragm compressor 8 driven by an electric motor 9.
  • Compressor 8 and motor 9 are mounted on container 1.
  • streams of bubbles projected from the perforations of tube 6 break up soil deposited in compartment 3.
  • the second compartment 4 in use contains relatively clean and inert chemical liquid filtered through screen 2 and can thus be used to flush the sanitary pans of the structure 30 to which the service unit is connected.
  • a continuously operable pump 12 driven by an electric motor 13, both of which are mounted on container 1, is connected to compartment 4 through a pipe 11 to draw off flushing liquid.
  • the output on the pressure side of pump 12 is connectible via a pipe 21 connected to one arm of a T-joint 14 to the cisterns 32 of the sanitary pans in a structure of the kind described to provide flushing liquid therefor, whilst the other arm of the T-joint is connected via a pipe 22 and a pressure operated relief valve 15 to compartment 3, thus providing a by-pass connection from the pump 12 to the compartment 3.
  • the valve 15 is set to determine the working head of pressure, about 10 pounds per square inch, for the service unit.
  • the pipe 21 contains a pot type strainer 10 so that liquid from the second compartment 4 can be periodically inspected to check on the efficiency of filter screen 2 and any soil which has penetrated screen 2 can be removed.
  • Container 1 is adapted to be situated under the floor of and to provide an underneath support for the structure to which it is connected. It has a shallow depth relative to its rectangular configuration in plan, the rectangular configuration corresponding to the configuration in plan of the structures to which it is to be applied.
  • the container is initially empty, and to ensure that it is filled to the right level, an overspill outlet 17 is ond compartment is inert, such draining is quite safe.
  • the tank is emptied by inserting into the inspection chamber 19 the suction hose of a gulley emptier.
  • a service unit for the discharge from flushable san- -itary pans comprising:
  • inlet means for conducting the discharge from at least one sanitary pan into one of said compartments
  • continuously operable pump means arranged to draw filtered liquid from the other compartment and having an outlet to direct the same away from said enclosure to a sanitary pan for selective release of said filtered liquid for flushing said sanitary pan; and by-pass means connected to said outlet and arranged to direct liquid therefrom into said one compartment whereby to continuously recirculate and refilter liquid in said enclosure, said by-pass means being provided with a valve arranged to close automatically when flushing liquid flows from said outlet away from said enclosure, to thereby direct the entire output of said pump to said sanitary pan.
  • said valve is a pressure operated relief valve.
  • a unit as defined in claim 1 including a removable filter arranged so that liquid drawn from said other compartment passes therethrough.

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sanitary Device For Flush Toilet (AREA)
  • Filtration Of Liquid (AREA)
  • Vehicle Waterproofing, Decoration, And Sanitation Devices (AREA)
US00267684A 1971-07-05 1972-06-29 Lavatory accommodation Expired - Lifetime US3839745A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3145171A GB1390350A (en) 1971-07-05 1971-07-05 Lavatory accommodation

Publications (1)

Publication Number Publication Date
US3839745A true US3839745A (en) 1974-10-08

Family

ID=10323278

Family Applications (1)

Application Number Title Priority Date Filing Date
US00267684A Expired - Lifetime US3839745A (en) 1971-07-05 1972-06-29 Lavatory accommodation

Country Status (7)

Country Link
US (1) US3839745A (nl)
CA (1) CA963186A (nl)
DE (1) DE2232622C3 (nl)
FR (1) FR2145232A5 (nl)
GB (1) GB1390350A (nl)
IT (1) IT958665B (nl)
NL (1) NL155616B (nl)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3958279A (en) * 1973-12-26 1976-05-25 Koehler-Dayton, Inc. Recirculating sewerage system
US4107795A (en) * 1975-08-18 1978-08-22 Modular Conceptual Systems, Inc. Self-contained comfort station
US4313233A (en) * 1979-01-29 1982-02-02 Inca-One Corporation Waterless flush toilet system
GB2385608A (en) * 2002-02-22 2003-08-27 Felix Mary Reilly Mobile cabin with toilet facilities
WO2017099609A1 (en) * 2015-12-10 2017-06-15 Norwest As Filter device for sewage and drainage systems

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3717705A1 (de) * 1986-06-06 1987-12-10 Dixi Sanitaersystem Gmbh & Co Sanitaere einrichtung und toilettenwagen
DE202011105321U1 (de) 2011-09-03 2011-11-08 Guido Golnik Mobiler Mehrzweckwagen

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1303358A (en) * 1919-05-13 Earle t
US2852635A (en) * 1955-05-23 1958-09-16 Phillips Petroleum Co Flow operated switch
US2951251A (en) * 1958-06-19 1960-09-06 Belden Perry Chlorinator for marine toilets
US3423766A (en) * 1965-10-13 1969-01-28 Leroy O Eger Sanitation system
US3440669A (en) * 1967-04-03 1969-04-29 Carl F Boester Household toilet waste disposal unit and method
US3628196A (en) * 1969-10-24 1971-12-21 Outboard Marine Corp Flexible chemical toilet
US3633218A (en) * 1970-08-24 1972-01-11 Robert D Lekberg Shipboard recirculation sewage system
US3666106A (en) * 1971-05-05 1972-05-30 Standard Products Co Apparatus for multi-stage treatment of waste material
US3673614A (en) * 1970-12-21 1972-07-04 Chrysler Corp Sewage disposal system with reusable flush medium
US3675774A (en) * 1970-09-22 1972-07-11 Monogram Ind Inc Marine recirculating and holding tank

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1303358A (en) * 1919-05-13 Earle t
US2852635A (en) * 1955-05-23 1958-09-16 Phillips Petroleum Co Flow operated switch
US2951251A (en) * 1958-06-19 1960-09-06 Belden Perry Chlorinator for marine toilets
US3423766A (en) * 1965-10-13 1969-01-28 Leroy O Eger Sanitation system
US3440669A (en) * 1967-04-03 1969-04-29 Carl F Boester Household toilet waste disposal unit and method
US3628196A (en) * 1969-10-24 1971-12-21 Outboard Marine Corp Flexible chemical toilet
US3633218A (en) * 1970-08-24 1972-01-11 Robert D Lekberg Shipboard recirculation sewage system
US3675774A (en) * 1970-09-22 1972-07-11 Monogram Ind Inc Marine recirculating and holding tank
US3673614A (en) * 1970-12-21 1972-07-04 Chrysler Corp Sewage disposal system with reusable flush medium
US3666106A (en) * 1971-05-05 1972-05-30 Standard Products Co Apparatus for multi-stage treatment of waste material

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3958279A (en) * 1973-12-26 1976-05-25 Koehler-Dayton, Inc. Recirculating sewerage system
US4107795A (en) * 1975-08-18 1978-08-22 Modular Conceptual Systems, Inc. Self-contained comfort station
US4313233A (en) * 1979-01-29 1982-02-02 Inca-One Corporation Waterless flush toilet system
GB2385608A (en) * 2002-02-22 2003-08-27 Felix Mary Reilly Mobile cabin with toilet facilities
GB2385608B (en) * 2002-02-22 2005-07-13 Felix Mary Reilly A mobile cabin with toilet facilities
WO2017099609A1 (en) * 2015-12-10 2017-06-15 Norwest As Filter device for sewage and drainage systems
US20180371737A1 (en) * 2015-12-10 2018-12-27 Norwest As Filter device for sewage and drainage systems

Also Published As

Publication number Publication date
DE2232622A1 (de) 1973-01-18
NL7209404A (nl) 1973-01-09
GB1390350A (en) 1975-04-09
FR2145232A5 (nl) 1973-02-16
NL155616B (nl) 1978-01-16
IT958665B (it) 1973-10-30
DE2232622C3 (de) 1975-10-09
DE2232622B2 (de) 1975-03-06
CA963186A (en) 1975-02-18

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