IMPROVEMENTS IN SEWER CONNECTIONS.
Year: 1879

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LETTERS PATENT to Herbert John Haddan, of the Firm of Herbert and
Company, Solicitors of Patents, of 67, Strand, in the City of Westminster,
Civil Engineer, for the Invention of "IMPROVEMENTS IN SEWER CONNECTIONS.'
A communication from abroad by Wilhelm Pickhardt, of New York, United
States of America. Merchant.
Sealed the 15th July 1879, and dated the 8th May 1879.
COMPLETE SPECIFICATION filed by the said Herbert John Haddan at the
Office of the Commissioners of Patents on the 8th May 1879.
HERBERT JOHN HADDAN, of the Firm of Herbert and Company, Solicitors of
Patents, of 67, Strand, in the City of Westminster, Civil Engineer. IMPROVE-
MENTS IN SEWER CONNECTIONS." A communication from abroad by Wilhelm
Pickhardt, of New York, United States of America, Merchant.
This Invention consists in the combination with the waste pipe leading from a
house to the sewer of a chamber formed on or firmly connected to said waste pipe,
a pipe extending from said chamber through the roof of the house, one or more
secondary waste pipes, each of which connects with the waste pipes of the water-
closet, the sink, the wash basins, the bathing tubs, the wash tubs, or other devices
of this nature, either or all situated in one and the same story of the house, upwardly
inclined spouts extending from said secondary waste pipes into the chamber of the
main waste pipe, suitable traps formed in the secondary waste pipes and in the
main waste pipe, and a water tank situated above the level of the chamber in the
main waste pipe and connected to each of the secondary waste pipes, so that the
gases which may pass from the sewer into the main waste pipe, escape through the
pipe extending through the roof of the house, and that a voluine of clean water can
be brought to bear upon each of the traps of the secondary waste pipes and also
upon the trap of the main waste pipe, under such a head that all the impurities
which may have collected in said traps are effectually washed out. The traps
which I use have an upward bent situated between two downward beats, and an
upwardly inclined spout, whereby the danger of having the traps "syphoned" out”
is materially reduced. This Invention is illustrated in the accompanying Drawing,
in which Figure 1 represents a vertical section; Figure 2 is a horizontal section in
Price B71

page_text: the plane x, x, Figure 1. Similar letters indicate corresponding parts. In these
Drawings the letter A designates the main waste pipe which leads from a house or
building into the sewer B, and which is provided with a trap C. Said waste pipe
connects with a chamber D of a spherical or other suitable shape, which may be
cast solid with the waste pipe or firmly connected to the same, and from this
chamber rises a pipe E which extends up through the roof of the house. The
chamber D is provided with suitable openings to receive the discharge spouts a, a³,
a², a³, of the secondary waste pipes F, F, F, F, and these spouts have an upwardly
inclined position, as shewn in Figure 1, so that the gases which may find their way
from the sewer through the main waste pipe into the chamber D will have no
opportunity to enter the secondary waste pipes but will pass up through the pipe E
and escape into the open air at the top of the house. Each of the secondary waste
pipes F, F1, F2, F3, is provided with its own trap G, G1, G2, G³, and connects by
suitable branch pipes with the water closets, wash basins, bathing tubs, wash tubs,
sinks, or other devices of a similar nature, which are situated on one and the same
story, and at a level several feet above the traps G, G, G, G³, is placed a water
tank H, from the bottom part of which extend pipes I, I, 13 I³, which connect
respectively with the secondary waste pipes G, G, G G³, and each of which is
provided with a suitable gate or stop cock b, 61, 62, 63, so that the flow of water
from the tank to the secondary waste pipe can be controlled. The traps C and G
which I use in my sewer construction are constructed each with an upward bent c
situated between two downward bents d, e, and from the downward bents e extend
the upwardly inclined spouts either into the sewer or into the chamber D. Traps,
as usually constructed, have only two bents, one down and the other up, and
their spouts extend downward, either in an inclined or in a vertical direction, and
they are liable to be "syphoned "out" by the suction in the waste pipe. This
disadvantage I have succeeded to overcome by providing my trap with one upward
and two downward bents, and with an upwardly inclined spout. In all traps of
the construction above described, however, the impurities which pass down through
the waste pipes are liable to lodge in the downward bents, and provision must be
made to dislodge and wash out these impurities, otherwise a bad odour will arise
from the same up into the house. For the purpose of effecting this object, I have
found it is necessary to employ a column of water which will act on the impurities
collected in the trap under such a head that it is able to force out such impurities
by its pressure. For supplying such columns of water for each trap I have
provided the water tank H, and the diameters of the tanks I, which connect this
tank with the secondary waste pipes, are so selected that whenever one of these
pipes is opened a column of water several feet in height will accumulate in the
corresponding waste pipe, and the impurities collected in the corresponding trap
will be expelled by the pressure of such column. Furthermore the combined areas
of the cross section of the several pipes I, I, I, I³, must be at least equal to the
area of the cross section of the main waste pipe, so that when all the pipes I, I¹,
12, 13, are opened a column of water with sufficient head is brought to bear upon
the impurities in the trap C to force the same out and to fill the trap with clean water.
By opening the pipes I, I, I, I³, at proper intervals, therefore, I an enabled to
keep all the traps in the house perfectly clean, and the air in the house will not be
contaminated by bad odors produced by impurities in the traps or by gases arising
from the sewer into the house. What I claim as new, and desire to secure by
Letters Patent is,-1. The combination with the main waste pipe leading from a
house to the sewer of a chamber formed on or firmly connected to said waste pipe,
a pipe extending from said chamber through the roof of the house, one or more
secondary waste pipes, each of which connects with the waste pipe of the water-
closet, the sink, the washbasins, the bathing tub, the washtubs, or other devices of
this nature, either or all situated in one and the same story of the house, upwardly
inclined spouts extending from said secondary waste pipes into the chamber of the
main waste pipe, suitable traps formed in the secondary wastepipes and in the main
wastepipo, and a water tank situated above the level of the chamber in the main

page_text: waste pipe and connected to each of the secondary waste pipes, all constructed and
adapted to operate substantially in the manner and for the purpose herein shown
and described. 2. A trap for sewer connections provided with an upward bent
situated between two downward bents and within an upwardly inclined spout,
substantially as set forth.
In witness whereof, I, the said Herbert John Haddan, have hereunto set my
hand and seal, this Soventh day of May, A.D. 1879.