Title of Invention

LAJJA LATRINE

Abstract

Fourteen litres of water flushed with excreta of one person is not the microbiological need for its treatment. Just for the presence of this large amount of water long septic tank and deep soakage pit are necessitated; still solids are left in the tank. They need to be obnoxiously cleaned over a number of years. In case of Lajja latrine half litre of water with one person's excreta falls through pan (4), seal (5) and trough (6) Figure 1 in a medium (3) Figure 4 exposed to atmosphere above through gas pipe (12) and below over a layer of brick ballast (11) Figure 4 having entrapped air, creates microbes that eat the excreta together with its solids. Pah (4) Figure 1 with water seal (5) Figure 1 designed for minimal use of water for cleaning sits directly over fiber-glass dome (1) Figure (4) the size of base of which corresponds to formation of number of microbes sufficient to eat away excreta of eight persons daily.

Full Text

Detailed description of the preferred embodiments: Lajja Latrine is prefabricated in materials such as fibreglass hence lightweight. It is in shape of a dome designed following principle of Shell theory of structures. The pan known as Lajja Water Closet of this latrine is fabricated monolith with the dome. The dome sits over brick ballast placed at the bottom of the pit. Night soil and water fall directly over the ballast in the pit. For sake of convenience in transportation the dome is fabricated in two pieces the top piece known as Mini Lajja which overlaps and pressure fits the bottom piece known as FDF. FIG.1 shows details of one type of Lajja Water Closet (1). The surface of Indian type pan (4) is steep, smooth and has a special patented paint that lasts over twenty years. The water seal (5) is tilted towards flow. The trough (6) for water of the water seal is made up of a special design to help clean the closet in only half a litre of water. FIG.2 shows details of one type of Mini-Lajja. The location of water closet is marked at (1). The pan (4) of water closet is visible in plan. Pair of pedestal (8) is on which the user will place his feet. They are cast prefabricated monolith with the portion of dome (7) all around the water closet. FIG.3 shows the Flexible Dome Frustum. Its shell (9) is made up of very thin material; hence it is very flexible but very strong when in true shape after earth is put all around it uniformly. FIG.4 shows the cross section of the composite Lajja Latrine. Position of water closet (1), Mini Lajja (2) flexible dome frustum (3) are shown here together. The bottom of the latrine (11) has material like brick ballast in it. The entire Lajja Latrine is placed in a pit cut and filled by the earth (10) uniformly all around the FDF. Gas formed in the latrine escapes through gas pipe (12). In another form of invention brick tank open at bottom with fully plastered side walls constructed on brick ballast may replace the fiber glass tank. The Lajja water seal pan in this can will be fitted in the slab covering the tank. In yet another form of invention the Lajja water seal pan and a part of dome is prefabricated together. This portion is named as Mini Lajja. It can be used independently for temporary or make-shift latrines. The remaining frustum of dome is made separately of lesser thickness of fiber glass making it flexible. This portion is named as Flexible Dome Frustum (FDF) which is put over the brick ballast first. Over this FDF the Mini Lajja is fitted tightly to give the entire dome function as one monolith piece. It facilitates transport and eases installation. Brief Description of the drawing FIG.1 shows one example of the portion of Lajja latrine named as Lajja Water Closet. FIG.2 shows one example of the portion of Lajja latrine named as Mini Lajja. FIG. 3 shows one example of the portion of Lajja latrine named as Flexible Dome Frustum. FIG.4 shows one example of the composite drawing of Lajja latrine. Detailed description of the preferred embodiments: FIG.1 shows details of one type of Lajja Water Closet (1). The surface of Indian type pan (4) is steep, smooth and has a special patented paint that lasts over twenty years. The water seal (5) is tilted towards flow. The trough (6) for water of the water seal is made up of a special design to help clean the closet in only half a litre of water. FIG.2 shows details of one type of Mini-Lajja. The location of water closet is marked at (1). The pan (4) of water closet is visible in plan. Pair of pedestal (8) is on which the user will place his feet. They are cast prefabricated monolith with the portion of dome (7) all around the water closet. FIG.3 shows the Flexible Dome Frustum Its shell (9) is made up of very thin material; hence it is very flexible but very strong when in true shape after earth is put all around it uniformly. FIG.4 shows the cross section of the composite Lajja Latrine. Position of water closet (1), Mini Lajja (2) flexible dome frustum (3) are shown here together. The bottom of the latrine (11) has material like brick ballast in it. The entire Lajja Latrine is placed in a ditch cut and filled by the earth (10) uniformly all around the FDF. Gas formed in the latrine escapes through gas pipe (12). I claim 1. Lajja Latrine wherein complete bio-degradation of nightsoil takes place without any net residue over the years. 2. Lajja Latrine as claimed in Claim 1 wherein the bio-degradation tank is dome shaped 3. Lajja Latrine as claimed in Claim 1 wherein the bio-degradation tank is pre- fabricated. 4. Lajja Latrine as claimed in Claim 1 wherein the bio-degradation tank is light weight. 5. Lajja Latrine as claimed in Claim 1 wherein the bio-degradation tank sits over the soakage pit 6. Lajja Latrine as claimed in Claim 1 wherein the water closet pan of the latrine is monolith with the bio-degradation tank. 7. Lajja Latrine as claimed in Claim 1 wherein the water seal of the water closet is tilted towards flow of water. 8. Lajja Latrine as claimed in Claim 1 wherein the trough of the water seal is oval in shape gradually tapering towards the tip. 9. Lajja Latrine substantially same as described in the specifications and the drawings.

Documents:

1093-DEL-2006-Abstract-(31-03-2009).pdf

1093-del-2006-abstract.pdf

1093-DEL-2006-Claims-(31-03-2009).pdf

1093-del-2006-claims-05-10-2006.pdf

1093-del-2006-claims.pdf

1093-DEL-2006-Correspondence-Others-(31-03-2009).pdf

1093-del-2006-correspondence-others.pdf

1093-DEL-2006-Description (Complete)-(31-03-2009).pdf

1093-del-2006-description (complete).pdf

1093-del-2006-drawings.pdf

1093-del-2006-form-1.pdf

1093-del-2006-form-13.pdf

1093-del-2006-form-2.pdf

1093-del-2006-form-3.pdf

1093-del-2006-form-9.pdf