An Improved Method for Connecting Lead or other Metallic Pipe to Earthenware, Fireclay, or other Non-metallic Traps for Water-closets or such Apparatus.
Year: 1895

page_text: Date of Application, 3rd Apr.. 1895
Complete Specification Left, 7th June, 1895- Accepted, 27th July. 1895
PROVISIONAL SPECIFICATION.
An Improved Method for Connecting Lead or other Metallic Pipe
to Earthenware, Fireclay, or other Non-metallic Traps for
Water-closets or such Apparatus.
I THOMAS BYRNE 14 Phibsborough off Phibsborough Road City of
Dublin Ireland Plumber do hereby declare the nature of this invention to be
as follows:
The invention consists of forming the fireclay or earthenware trap with a flange
(below the water surface) the interior of this flange is slightly socketed, to receive
the end of the lead bend or U piece. This socket must be at least one inch deep,
this causes the nose of the bend to always dip that much into the water, (when
there is water in the trap). There is a brass flange, to be soldered on to the bend,
a rubber washer between, and the two flanges bolted together. The advantages
are, the joint is reliable because it has a water seal in addition to the rubber
washer. There is a hydraulic test constantly on the joint it being under the water
surface. Even if water leaked through the joint it would still be staunch against
sewer gas because the bend dips into the water of the trap. Any sharp bend of
lead can be used, and before the flange is soldered, the bend can be turned to meet
the soil-pipe in any direction. The anti-syphon pipe can be soldered anywhere on
the outgo.
Dated this First day of April 1895
An Improved Method for Connecting Lead or other Metallic Pipe
to Earthenware, Fireclay, or other Non-metallic Traps for
Water-closets or such Apparatus.
I THOMAS BYRNE 14 Phibsborough off Phibsborough Road City of
Dublin Ireland Plumber 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 invention consists of forming the fireclay or earthenware trap with a flange
as shown at F in the drawing, (below the water surface) the interior of this flange
is slightly socketed to receive the end of the lead bend or U piece. This socket
should be about one inch deep, this causes the nose of the bend to always dip that
much into the water (when there is water in the trap). There is a brass flange
to be soldered on to the bend or U piece, a rubber washer between, and the two
flanges bolted together.
Referring to the drawing the following is a description.
Fig. 1. is a sectional elevation of the trap, the bend of soil-pipe, and the joint.
T is an earthenware or fireclay trap, which may be in one piece with the closet
(or slop) basin, or it may be a trap only (as required) F is a section through the
earthenware or fireclay flange formed on and being part of the trap, it is socketed

page_text: on the inside to receive the bend B,B. (This should be an inverted U piece when
the position of the soil or waste pipe would require the outlet to turn quickly
down.) The throat of the bend B.B (or U piece) forms the weir of the trap, and
the height that the water is to stand in the basin is regulated by the length of the
arm connected with the trap. W W shows the surface of the water. ff is a
brass flange which is to be soldered to the bend. w is a rubber washer.
Fig. 2. is a plan of the flanges. F F F F being the earthenware flange and
ffff the brass flange, b and bare bolts and nuts. The drawing is to a scale
of and therefore shows a size for a water-closet trap and 4 inch soil-pipe but the
invention is applicable to other sizes of pipes and waste-pipes. The advantages
are. The joint is reliable because it has a water seal in addition to the rubber
washer. There is a hydraulic test constantly on the joint, it being under the
water surface. Even if water leaked through the joint it would still be staunch
against sewer gas because the bend dips into the water of the trap. Any sharp
bend of lead can be used, and before the flange is soldered the bend can be turned
to meet the soil-pipe in any direction. The anti-syphon pipe can be soldered
anywhere on the outgo.
:
:
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.
I
1. That the joint being below the surface of the water in the trap any leakage
from it will be visible and should such leakage happen the trap will still retain a
good water seal.
2. That the nose of the bend dipping into the water of the trap is effectually
sealed against leakage of sewer gas, even if the joint is badly put together and
water be leaking through.
3. That if the joint is carelessly fitted or gets shaken and water does leak
through, it thereby gives a wholesome notice of the defect, whereas if the joint
was above the water level it could leak sewer gas, which being invisible the first
warning might be serious sickness, such a contingency is prevented by my
invention.
4. The trap can be fixed in a normal position and the bend rotated (before
soldering on the flange) to meet the soil-pipe in any direction.
5. The anti-syphon pipe can be soldered anywhere on the outgo.
T100-
THOS. BYRNE.