Year: 1886

page_text: Date of Application, 9th Sept., 1886.
Complete Left, 9th June, 1887.
Complete Accepted, 12th July, 1887.
We, GEORGE HENRY JENNINGS and SIDNEY JENNINGS both of Palace Wharf,
Stangate, Lambeth, in the County of Surrey, Sanitary Engineers do hereby declare
the nature of this invention to be as follows:
We place the outlet trap at the centre of the drain to which the pans are connected.
When it is desired to flush this drain water is admitted at each end so that everything
is driven towards the outlet at the centre and at the same time a rose jet is turned on
in the descending arm of the trap to free it from air. By these means a syphon
action is established which thoroughly sweeps out the drain. An after flush is
provided to fill the drain and pans with clean water.
In some cases we provide gradually filling flush cisterns at the ends of the drain
these can be emptied at pleasure by turning on the rose jet and thus starting the
siphon action.
Dated the 012 1
2. 1000
CARPMAEL & Co.,
Agents for the Applicants.

page_text: Figure 1 is a front elevation of a latrine arranged in accordance with our invention.
A urinal can be constructed in a similar manner, the difference being in the form of
the pans.
Figure 2 is a transverse vertical section.
a² a² a³ a and a are the pans connected in series to the desired number. b bare
the pipes connected at the ends of the series by which the intermittent water supply
for flushing is given. The centre pan a³ differs from the others in having an outlet c
from the bottom into a siphon pipe or passage d passing to the drain. The pipes b
are connected by a rising pipe e with the cistern finto which the water to be used
for flushing is slowly admitted. When the cistern is nearly full well known
intermittent flushing apparatus within the cistern but not shown in the drawing
delivers the greater part of the contents of the cistern down the pipes e and b b into
the pans. The level of the water in the centre pan a³ then rapidly rises and the pan
overflows by the passage d. At the same time some of the water descending the
pipe e passes by the smaller bent pipe g to a rose h at the top of the descending limb
of the passage d. The shower from the rose aids the overflow from the pan and by
their combined operation the air in the passage d is carried forward and the passage
becomes so far charged with water that a siphon like action is established. Then the
entire contents of the pans are very rapidly discharged for no air can enter the
passage d until the outlet at c becomes uncovered. In order that the pans may not be
left dry the flushing apparatus is so placed in the cistern that it does not empty it but
lowers the level to say the line fiff when it ceases to operate. The cistern ƒ however
also contains a small siphon i forming an after flush apparatus. One end of the
siphon is close to the bottom of the cistern f and the other descends through the
bottom and is connected with the pipe e. When the flushing water is delivered into

page_text: the pipe e its descent brings the after flush siphon i also into action and it continues
in operation after the flushing operation ceases. The siphon then delivers water into
the pans by the pipes b b and the water may be allowed to accumulate to any depth
which may be considered desirable before the cistern is emptied and the action of the
siphon i ceases.
The arrangement can obviously be varied by the omission of the pans a* aº thereby
making it unilateral but this is less advantageous.
Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed we declare that what we claim is :-
1.-Latrines and urinals consisting of pans connected in series with intermittent
water supply at the two ends of the series and siphon outlet trap at the centre
substantially as described.
2. Latrines and urinals consisting of pans connected in series with intermittent
water supply to the end or ends of the series and simultaneously into the descending
limb of the siphon outlet trap substantially as described.
3. Latrines and urinals consisting of pans connected in series with intermittent
water supply to the end or ends of the series; delivery by siphon outlet trap and
after flush apparatus refilling the pans substantially as described.
4. Latrines and urinals substantially as described and represented by the annexed
drawings.
D
11°
1
1002