Improvements in and relating to Apparatus for Handling and Treating Sewage.
Year: 1890

page_text: Date of Application, 27th May, 1890-Accepted, 4th Oct., 1890
COMPLETE SPECIFICATION.
Improvements in and relating to Apparatus for Handling
and Treating Sewage.
I, WALTER SCOTT WEST, residing at Number 280, Broadway, in the City, County
and State of New York, one of the United States of America, Gentleman, 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 the invention is to provide adequate means for lifting and transporting
sewage from the fount of discharge to the filtering beds or other point of disposal,
combining therewith devices designed to effect the separation of grease, paper, etc.,
and thorough and effective means of ventilation, all as hereinafter set forth.
In the accompanying drawings illustrating this invention, Figure 1 is a longitudinal
vertical section. Figure 2 is a plan view. Figures 3 and 4 are details.
The letter Z designates the main building of the pumping station, whereof the
excavated portion W, is quite deep, being usually deeper than the height of the
building, Z, above ground.
A, is the chimney which is usually made double and surrounded by the outer
chimney wall, A', between. which and the inner chimney, A, is the warm air inter-
space, I, this interspace extending around the chimney or chimneys from top to
bottom, and communicating with the interior of the chimney or chimneys by the
openings at, a. The chimneys, A, and other outer wall, A¹, extend to a considerable
height above the building, and they are therefore constructed upon a strong founda-
tion, B, which extends up into the lower chamber, W, of the building, as shown.
By the arrangement of the chimneys and the enclosing stack an air flue, 1,
is formed in which the air is warmed or heated by the heated walls of the draught flue
or flues, A, of the boilers, so as to promote the draught in said air flue.
As stated above, the air flue communicates with the stacks through openings, a, and
with the spaces below the screening floors by openings, b, the object being to draw the
foul air from said spaces, the denser portion of which will be drawn through the
openings, a, into the draught flue or stack and being combustible and coming in contact
with the highly heated products of combustion, in fact with the flame from the boiler
furnaces, will be consumed, while the less dense gases flowing through the inter-
space, I, will be greatly rarefied by contact with the heated walls of the stacks, so as
to become practically non-injurious after leaving the stacks and combining with the
ambient air.
Openings, b, are made through the outer wall, A¹, of the warm air shaft, just above
the base, B', and at the lower end of the shaft below the level of the screening
floor, L, for the purpose of drawing off the foul air from the space below said
floors.
The floor of the lower chamber, W₁, of the building inclines downward toward the
pumping end, forming a trough at, c, for the accommodation of the suction pipe, E, of
the pump or pumps, F, two being usually employed.
At the sides of the warm air shaft, A', are the boilers, B, that supply the steam for
working the steam pumps, and between these boilers is located the grease-pan, K, in
which it is designed by means of the waste heat and steam from the boilers, to reduce
the
which
grease
may be recovered from the sewage, the grease being carried to the
pan in any suitable manner.
L, indicates the screening floors for the separation of paper and grease from the
sewage delivered thereon, and designed to pass through the same to the inclined floor
of the pumping apartment. The screening floor is laid upon suitable beams, d, and
consists of boards and frame-work filled in with saw-dust, shavings, excelsior, charcoal,

page_text: .
or other cheap material which will serve after its functions as a screen for the purpose
of fuel.
The inlet pipes from the sewer, indicated at, D, enter the chamber, W, a little above
the screening floor, as shown, so that the material will be spread over the floor as it
comes from the sewer pipes, and will gradually pass through the same, leaving the
paper, grease, and insoluble articles upon the floor to be gathered up and burned or
otherwise disposed of. To each sewer inlet pipe, D, is connected near its end a
ventilating pipe, G, which rises by a hend or neck, e, upward, and extending through
the wall, A', of the warm air shaft communicates with the ventilating chamber therein,
just above the level of the openings, a, into the chimney.
G', is the discharge pipe leading from the pumps to the filter beds.
Exterior to the wall of the underground chamber, W, and extending downward
from the ground level, H, are the fresh air ducts or chutes, J, which are next said
wall, and which are provided with openings, f, at the lower ends opening into the
lower portion of the chamber or underground apartment, W. Above the openings, f,
these chutes or air ducts are provided with other openings, h, having doors or
valves, k.
I preferably employ two sets of openings to more thoroughly ventilate the upper
and lower chambers, and the upper ventilating openings are provided with valves, so
that these openings may be partially or wholly closed when this becomes desirable or
necessary to prevent escape of gases and vapours.
The discharging end of each inlet pipe, D, is provided with a gate valve, N, which
can be raised or lowered to regulate the discharge, the operator passing along the
platform, Z.
M, indicates the house connection for the sewer pipe, this connection having a
bend, m, at its lower end in the direction of the flow of sewage. This bend, m, is
formed on the union sleeve, P, which is provided with the base, T, and it is designed
to prevent clogging. The free supply of air to the underground apartment, W',
through the chute or ducts, J, serves to provent the exhalation of odours, the tall
chimneys and their surrounding warm air shaft taking all gases and odours up, and
in a great measure burning them or excessively rarefying them before their discharge
at the top of the chimney. The denser gases are drawn into the chimneys themselves
through the openings, a, and burned, as hereinbefore referred to.
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―
First. In a pumping station for sewage, the combination with the chimney and its
surrounding ventilating shaft communicating with said chimney, of the underground
pumping chamber, its descending fresh air ducts, boilers, pumps, and screen floor, the
sewage inlet pipes above said screen floor, and the ventilating pipes extending from
said inlet pipes to the ventilating shaft around the chimney, substantially as
specified.
Second. In a pumping station for sewage, the combination with the chimneys,
boilers, and pumps, and the underground pumping apartment having the descending
fresh air inlet, of the main ventilating shaft surrounding the chimneys and com-
municating therewith above, and with the underground apartment below, the
screening floor, the sewage inlet pipes above the same, their adjustable valve gates,
and their ventilating pipes leading to the ventilating shaft, substantially as and for the
purposes specified.
Third. The combination with the main sewage pipe, and its house connection having
its discharging bend in the direction of flow in said main sewage pipe, of the
ventilating sewage pumping station, its screening floor, and the discharging pipe
leading to the filter beds or other place of deposit, substantially as and for the
purposes specified.
Fourth. The combination with the sewage pipes leading thereto, of a deep under-

page_text: ground receiving apartment, its exterior descending air chutes and central ventilating
air shaft having inlet opening at its base, the chimney enclosed in said air shaft and
communicating therewith, the boilers and pumps, the valved sewage inlet pipes and
their ventilating pipes communicating with the ventilating shaft, and the screening
floor below the sewage inlet pipes and separating the same from the lower or trough
portion of the underground apartment from which the suction pipe ascends to the.
pump, substantially as and for the purposes specified.
Dated this 27th day of May AD 1800
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.