Improvements in Latrines.
Year: 1893

page_text: Date of Application, 12th May, 1893
Complete Specification Left, 12th Feb., 1894-Accepted, 17th Mar., 1894
PROVISIONAL SPECIFICATION.
Improvements in Latrines.
I, OSCAR ELPHICK, of Lambeth Sanitary Engineering Works, Albert
Embankment, Surrey, Sanitary Engineer, do hereby declare the nature of this
invention to be as follows:-
The object of this invention is to keep each basin absolutely separate and to
insure perfect cleansing with the smallest possible amount of water thus over-
coming a defect inherent to the ordinary form of trough closet or latrine :—it also
The latrine
enables a much smaller connection pipe than is usual to be employed.
consists of an approximately horizontal drain having (or connected to) a self
acting flushing apparatus at one end and a rising trap at the other. I sometimes
add an extra turned up bend to this to increase the syphonic power.
The drain is made up of earthenware pipes socketed together some of which
preferably every other one are provided with feet at their lower side and sockets
for receiving the pans on their upper side, or the pan and pipe may be made in one
piece. Preferably also these pipes have a socket at each end, the remaining pipes
being plain.
The pans are provided with flushing rims supplied with water either from the
self acting flushing apparatus or from an independent source, preferably the
former.
The trap at the end of the horizontal drain rises to such a height that the lower
part of the pans are normally full of water so that their outlets into the drain are
sealed.
When the flushing tank discharges the water rises in the pans until a sufficient
head is obtained to set up syphonic action in the trap and at the same time the
water is flushing the basins through the flushing rims whereupon the whole
contents of the drain is swept out. The action is materially assisted by the shape
given to the outlet from each pan which is slightly contracted and directed towards
the trap. The drain is then refilled by an after flush.
1
CM1002
Improvements in Latrines.
I, OSCAR ELPHICK, of Lambeth Sanitary Engineering Works, Albert
Embankment, Surrey, Sanitary Engineer, do hereby declare the nature of this
invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement :-
The object of this invention is to keep each basin absolutely separate and to
ensure perfect cleansing with the smallest possible amount of water thus over-
coming a defect inherent to the ordinary form of trough closet or latrine :-it also
enables a much smaller connection pipe than is usual to be employed.
Figure 1 is a longitudinal section, Figure 2 a transverse section and Figure 3 a
plan of the latrine which consists of an approximately horizontal drain a having
(or connected to) a self acting flushing apparatus b at one end and a rising trap c
at the other. I sometimes add an extra turned up bend to this to increase the
syphonic power.

page_text: The drain is made up of earthenware pipes socketed together some of which
preferably every other one as shown are provided with feet at their lower side and
sockets for receiving the pans d on their upper side, or the pan and pipe may be
made in one piece. Preferably also these pipes have a socket at each end, the
remaining pipes being plain.
The pans d are provided with flushing rims d¹ supplied as shown with water
either from the self acting flushing apparatus or it might be from an independent
source, preferably the former.
The trap at the end of the horizontal drain rises to such a height that the lower
part of the pans are normally full of water so that their outlets into the drain are
sealed.
When the flushing tank discharges the water rises in the pans until a sufficient
head is obtained to set up syphonic action in the trap and at the same time the
water is flushing the basins through the flushing rims whereupon the whole
contents of the drain is swept out. The action is materially assisted by the shape
given to the outlet from each pan which is slightly contracted and directed towards
the trap.
The drain is then refilled by an after flush. I sometimes find it
advantageous to carry a pipe from the flush tank to inlet E.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
1. In latrines, the combination of an approximately horizontal drain, a self acting
flushing apparatus at one end of the drain, and a rising trap at the other end,
substantially as described.
2. Latrines substantially as described and shown in the drawings.
Dared this 3rd do of Bah100r
OSCAR ELPHICK.