Improvements in or connected with the Waste Water Pipes of Domestic Sinks, Baths and the like.
Year: 1896

page_text: Date of Application, 5th Sept., 1896.
Complete Specification Left, 28th May, 1897-Accepted, 3rd July, 1897.
PROVISIONAL SPECIFICATION.
Improvements in or connected with the Waste Water Pipes of
Domestic Sinks, Baths and the like.
We THOMAS THOMASSON and WALTER THOMASSON, both of 57 Egmont Street,
Mossley, in the County of Lancaster, Mechanical Engineers, do hereby declare the
nature of this invention to be as follows:-
Our Invention relates to improvements in or connected with the waste water
pipes of domestic sinks, baths and the like.
In such waste water pipes as at present in use and particularly in the case of
domestic sinks no precautions are usually taken to prevent foul air and gases from
passing from the drain up the pipe into the room.
The object of our invention is to provide means whereby the entry into the room
of foul air or gases through the pipe may be prevented.
In carrying our invention into effect we provide the mouth of the waste water
pipe with a short cylindrical tube of metal or suitable material- the top of which is
flush with the bottom of the sink or bath. The interior of this tube is formed or
provided with a conical mouth-piece the lower end of which enters a cup shaped
vessel. This cup is secured in any suitable manner to the tube, leaving a concen-
tric space between the cup and the tube. The waste water passes from the sink
through the conical mouth and into the cup. From thence it overflows and
escapes over the sides of the cup and between the sides of the tube and passes
lown the pipe to the drain. The cup however is always left full of water and as
the conical mouth piece of the pipe dips into this water an efficient seal or trap
is provided which effectually prevents the passage of foul gases through the mouth
of the pipe into the room. The tube would be fitted into the pipe so as to form a
fluid tight joint whilst permitting the appliance to be readily withdrawn for the
purposes of cleansing. In order to exclude the larger masses of solid matter from
passing down the conical mouth of the tube we should provide a grid or strainer
placed upon the tube mouth. In a modification of our invention the tube may
be dispensed with and the waste water pipe be provided with a conical mouth-
piece only. The conical mouthpiece would dip as before into a cup, the cup in
this case being secured to the cone by means of a removable pin.
The details of our invention might vary so long as the gist of our invention is
retained, viz. the provision of the conical mouthpiece dipping into a cup or vessel
so as to provide a water seal for the waste water pipe.
נד
4th dose of Santambar 1896
For the Applicants,
E. K. DUTTON & Co.,
Chartered Patent Agents,
5 John Dalton Street Manchester.

page_text: Improvements in or connected with the Waste Water Pipes of
Domestic Sinks, Baths and the like.
We THOMAS THOMASSON and WALTER THOMASSON, both of Highfield Terrace,
Mossley, in the County of Lancaster, Mechanical Engineers, (late of 57 Egmont
Street, Mossley,) 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 and accompanying drawings:-
Our Invention relates to improvements in or connected with the waste water
pipes of domestic sinks, baths and the like.
In such waste water pipes as. at present in, use and particularly in the case of
domestic sinks, the pipe simply carries a grid or strainer to exclude solid matter
and no precautions are usually taken to prevent foul air and gases passing from the
drain up the pipe into the room.
The object of our invention is to provide means whereby the entry into the room
of foul air or gases through the pipe is prevented and this we do by providing the
pipe with a suitable trapping device.
The apparatus we employ to prevent passage of foul air and gases from waste
water pipes may by slight structural modifications be utilised as a street trap or
gully grate. Our invention will be better understood on a reference to and
inspection of the annexed sheet of illustrative drawings in which:-
Fig. 1 shows the application of our improved trap to the waste water pipe of a
domestic sink or bath the trap being shown in outside elevation.
Fig. 2 is a sectional elevation of this trap.
Fig. 3 is a plan.
;
Fig. 4 shows in separate elevation the loose removable centre cone.
Fig. 5 shows a modified construction of our invention designed and arranged
to act as a gully trap.
To prevent the emission of had air or foul gases from a waste water pipe such
as we provide the mouth of the pipe with a thimble or liner b and this liner is
suitably cut away at the sides to allow escape of waste water as clearly shown in
the drawings.
.
The lower part of this thimble thus constitutes a cup or vessel b and this cup
must of necessity always remain practically full of water. The upper part of the
thimble is suitably flanged outwards at its upper end so that between such flanged
portion, and an inserted ring c, an annular space d is provided which is also always
filled with water. We provide a removable cone e the lower end of which dips into
the water in the cup and hermetically seals the connection. The upper end of
the cone rests on the ring e, a turned over portion el dipping into the water in the
annular pocket d so that the connection here is again hermetically sealed. Thus
whilst the passage of fluid to waste is not interfered with the possible entrance
of foul air and gases into a room or apartment is entirely obviated by the use of
our invention. To prevent choking of the trap or pipe by food stuffs &c. we
prefer to provide a grid or strainer f which would be soldered to the top of the
If the cup Bi
happens at any time to become stopped up with solid matters
the cone is easily lifted away when the obstruction may be readily removed.
We might, if thought desirable, and to prevent accidental displacement of the
cone by the rush of water, lock the cone in position by turning one or more bars
of the grid under wings carried by the thimble.
cone e.
The trap, which is inexpensive and effective, may be formed from metal or
other suitable material and may be produced by pressing stamping or casting or
in any other convenient manner.

page_text: We do not confine ourselves to the exact form of trap indicated as the details
might vary so long as the gist of our invention is retained, viz. the provision of a
conical mouthpiece or outlet dipping into a cup or vessel so as to provide a water
seal for waste water pipes.
For instance we might simply fit the waste water pipe with a cone such cone
dipping to a suitable extent into a cup secured to the waste pipe or carried by the
cone itself..
Fig. 5 shows a view of a street gully or trap embodying the features of our
invention slightly modified to suit the application.
The frame g carrying the grid is cast or formed with a pocket d and has an
annular ledge or ring g'. We form the cup or chamber b with a shoulder or annu-
lar ring which rests, when the cup 1 is in position, on the ledge g¹. The cone c
as in the former case has its lower end dipping into and scaling the vessel b¹ whilst
its upper turned over portion el dips into and seals the annular pocket . Should
it at any time prove desirable to empty out any refuse matter collected in the
vessel it is only necessary to withdraw the cone e with the aid of the cross bar e
when the vessel 6 may be readily removed by means of the rod 63 and the contained
refuse discharged.
b
Although we have described the gully trap as being of circular formation it
will be evident that it may just as readily be made rectangular or of other conven-
ient shape.
Having now particularly described and ascertained the nature of our said in-
vention and in what manner the same is to be performed we declare that what we
claim is:
1. The improved means for preventing the entrance into rooms or apartments of
foul air and gases from waste water pipes or sinks substantially as described and
as illustrated in Figs. 1 to 4 of the drawings.
2. A thimble such as formed or provided with water compartments in com-
bination with a cone such as c arranged as and for the purposes set forth.
3. A trap for the waste water pipes of domestic sinks, baths and the like, and
for the indicated purposes consisting of a cone or spout dipping into a cup or
vessel so as to form, when in use, a water seal substantially as set forth.
4. The improved gully grid or street trap substantially as set forth and illus-
trated in Fig. 5 of the drawings.
Dated this 97th day of Mox 1807