Year: 1886

page_text: Date of Application, 31st July, 1886.
Complete Left, 29th Jan., 1887.
Complete Accepted, 8th Mar., 1887.
I HENRY DEAN of the County of the Borough of Carmarthen Civil Engineer and
Surveyor do hereby declare the nature of this invention to be as follows:-
This invention relates to certain improvements in the construction of Drain Traps
the component parts thereof being so arranged as to form a trap practically self-
cleansing.
This improved trap can be made of iron, stoneware, or other suitable material, and
of any required size, and with square, circular, rectangular or other shaped top
and grid.
The construction is as follows :-
According to one modification it is intended for the disconnection of scullery, sinks,
bath, or other waste pipes which can either discharge on the top of the grating or be
connected with inlet or inlets provided in the side of the trap. It is so constructed
that from the surface it diminishes to a small circular section at or near the waterline
from thence the pipe forms an inverted syphon and on such easy curves and lines as to
render it practically self cleansing. This syphon is joined to a section of pipe which is
or may be of larger diameter leading to the drain the opposite side of which serves as
an opening for ventilation from which opening a ventilating pipe can be fixed in any
required direction.
According to a second modification it is of similar construction but is intended for
the disconnection and ventilation of water-closet soil pipes it is provided with
connection for soil pipes above the waterline. The grid is partly solid and partly
open the part immediately over the water is solid, the other is open for ventilation to
the soil pipe. Underneath the open portion there is a projection forming a basin to
intercept any silth or other matter that may get through the open grating at the
surface. This arrangement renders it almost impossible for any matter from the
surface to get into the syphon and the water in such syphon cannot be seen from
the surface. This projection or basin instead of being provided in the body of the
trap can be attached to or form part of the grating and removable at pleasure.

page_text: According to a third modification the lower portion comprising the syphon the
outlet and ventilator is surmounted by a top similar in construction to the top portion
of the first named modification of my grease and silth trap viz, of such greater
diameter as to admit of a well around the interior of same with outlet fitting into the
said syphon. This top can be provided with one or more inlets which are trapped by
a cast iron or other dip projecting into the water in the well all around same. Such
dip being so arranged that any water from the surface must fall direct into the syphon
without interfering with the inlet trap or traps. This dip is removable at pleasure and
can be cast in one piece with the grid if required.
In each of these modifications the trap can be made in one two or more parts and
instead of the outlet being in a line with the syphon it can be at right angles or any
other angle to the same.
An inspection opening can be provided at outlet if required.

page_text: Improvements in Drain and Ventilating Traps.
I HENRY DEAN of 95 Guilford Street Russell Square London in the County of
Middlesex Surveyor 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 :-
It relates to certain Improvements in the construction of Drain and Ventilating
Traps, for the disconnection and ventilation of W.C. Soil or waste pipes the
component parts thereof being so arranged as to form a Trap practically self
cleansing together with provision for efficient ventilation and Inspection and where
required interception of silth or rubbish from the surface.
Figures 1 & 2 on the accompanying Sheet of Drawings No. 1 illustrate one
modification of my improvements which is intended for the disconnection of waste
pipes and which may be made to discharge over the grating or connected with inlet or
inlets A. provided in the side or sides of the Trap for that purpose. It can also be
used as a yard Trap.
The top of this Trap Fig. 1 is shown as square but it can be either Circular,
Rectangular or any other approved shape. The body of the Trap diminishes down-
wards from the top as shewn to a small section B at or near the water line; from
thence it forms an inverted syphon C on such easy lines as to render it practically self
cleansing. This syphon is joined to a section of pipe forming the outlet D and
opening for ventilator E and which is or may be of larger diameter than the syphon-
is an opening for inspection with cap as shown.
Instead of the outlet being in the position shewn at D in a line with the syphon it
may be at a right or other angle with the same being opposite the opening for
ventilator E. In this case the curve of the part forming the syphon or Trap is
continued around the portion forming such outlet and ventilator as indicated by dotted
lines, falling into such section in the direction of outlet at G an opening for inspection
being provided opposite to same. H is the Grid or Grating.
Fig. 3. (Sheet 2) illustrates a second modification of my improvements: the
construction of the body of the Trap similar to that described in the first named
modification. It is intended for the disconnection and ventilation of W.C. Soil pipes,
but can be arranged to serve also for the disconnection of Rain water or waste pipes―
The cover in this case is partly open and partly solid-the part J immediately over the
syphon is solid the other part H is an open grating for the admission of fresh air to
the soil pipe-Underneath this open grating the configuration of the Trap is such as
to form a basin K for the purpose of intercepting and preventing any silth or other
rubbish from the surface from falling in and interfering with the syphon the ventilation
being at the same time free and unimpeded-This arrangement also renders the water
or contents of the syphon or Trap invisible from the surface. The basin instead of
forming a portion of the Trap, can be affixed to or form part of the grid, being
removable with the same.

page_text: According to a third modification Fig. 4 (Sheet 2) the lower portion or syphon is
surmounted by a top similar in construction to the upper portion of the first named
modification of my Patented Invention No. 9859 A.D. 1886 viz being of such greater
diameter as to admit of a well around the interior of same with a projection Lat
bottom fitting into the collar M of the syphon.
This upper part is provided with one or more inlets A A which are trapped by the
circular dip N. This dip also forms a hopper to direct the discharge from the
surface into the syphon without interfering with the inlet Traps-This dip and hopper
is removable at pleasure and can be cast in one piece with the Grating H if required.
In either of these modifications the traps may be made in one or more separate
parts and may be made of Stoneware or any other approved material and of various
sizes depending upon the requirements.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is-
Firstly The general construction of the Traps and the arrangement for the inter-
ception of matters from the surface substantially as above described and as illustrated
in the accompanying Drawings or any mere modification thereof.
Secondly The combination of the lower portion or syphon with a top of similar
construction to the upper portion of the first named modification of my Patented
Invention No. 9859, A.D. 1886 substantially as above described and as illustrated in
the accompanying Drawings or any mere modification thereof.