Improvements in Traps for Sanitary Purposes.
Year: 1888

page_text: Date of Application, 26th July, 1888
Complete Specification Left, 11th Oct., 1888
Complete Specification Accepted, 16th Nov., 1888
PROVISIONAL SPECIFICATION.
Improvements in Traps for Sanitary Purposes.
GILBERT HENRY GARRETT of Messrs. Robert Stephenson & Co. Limited, South
Street, Newcastle-upon-Tyne, Manager, do hereby declare the nature of this invention
to be as follows:-
My invention relates to Improvements in Traps for sewer pipes for sewerage and
drainage; for the prevention of the passage of sewer gas and other gases of an
unsanitary and deleterious nature. In the ordinary U, trap or similar form, the
sudden rush of sewerage as well as the syphon action frequently carries all the water
out of the bend, or so much of it that there is no longer any water seal; and so the
gases escape through under the trap bend. In this Invention I make use of the
ordinary bend, and insert therein one or more branch pipes, or chambers, a short
distance above the U-bend; either on the discharge or receiving side of trap, or on
both sides as may be desired. These pipes or chambers are open only at their end
next the connection with the trap or sewer pipe. So that when water is allowed to
flow into the trap, these branch pipes or chambers will be filled or charged with fluid,
when the fluid in the trap is above their level. The action of the trap thus arranged
is as follows:-When the sewer pipe is charged or flushed, the rush of the fluid
together with the syphon action of the sewer pipe will carry a considerable portion
or nearly all the water from the bent pipe forming the trap, but will leave the pipe
or chamber full, the fluid in which will immediately flow through the opening, and
thus re-charge and re-seal the trap. Similar action will take place when from
long continued disuse the water in the pipe becomes evaporated or escapes by
leakage.
The outer ends of the branch pipes as well as the bend itself may have plug holes
for cleaning purposes. The branch pipes, reservoirs, or chambers, are so arranged as
to be self-cleansing, and they may be made so as to be detachable, or in one with the
trap; they can also be of any suitable material.
Santamba 12/88
FRANCIS M. ROGERS,
Agent for Applicant.

page_text: Improvements in Traps for Sanitary Purposes.
GILBERT HENRY GARRETT of Messrs. Robert Stephenson & Co. Ltd. South Street,
Newcastle-upon-Tyne, Manager, 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:-
My Invention relates to Improvements in Traps for sewer pipes for sewerage and
drainage for the prevention of the passage of sewer gas and other gases of an
unsanitary and deleterious nature. In the ordinary U trap or similar form the
sudden rush of sewerage as well as the syphon action frequently carries all the water
out of the bend, or so much of it that there is no longer any water seal; and so the
gases escape through under the trap bend. In this Invention I make use of the
ordinary bend and insert therein one or more branch pipes or chambers, a short
distance above the U bend; either on the discharge or receiving side of trap, or on
both sides as may be desired. These pipes or chambers are open only at their end
next the connection with the trap or sewer pipe. So that when water is allowed to
flow into the trap these branch pipes or chambers will be filled or charged with fluid,
when the fluid in the trap is above their level. The action of the trap thus arranged
is as follows: When the sewer pipe is charged or flushed, the rush of the fluid
together with the syphon action of the sewer pipe will carry a considerable portion
or nearly all the water from the bent pipe forming the trap, but will leave the
pipe or chamber full, the fluid in which will immediately flow through the opening,
and thus re-charge and re-seal the trap. Similar action will take place when from
long continued disuse the water in the pipe becomes evaporated or escapes by
leakage.
The outer ends of the branch pipes as well as the bend itself may have plug
holes for cleaning purposes. The branch pipes, reservoirs, or chambers are so
arranged as to be self-cleansing, and they may be made so as to be detachable, or
in one with the trap; they can also be of any suitable material.
To enable my Invention to be more clearly understood I will now proceed to
explain its operation by means of the accompanying drawing in which :-
Fig. 1, is a perspective view of the trap.
Fig. 2., a modification shewing the double branch pipe.
Fig. 3 end view partly in section.
A, Fig. 1, shews one of the usual forms of bends or syphon traps. In a bend or
syphon trap of this description I insert a branch pipe, reservoir or chamber B, by pre-
ference on discharge side of trap. I bend the discharge side of trap in such a manner
as to direct the flow of water into the branch pipe, reservoir or chamber for the purpose
of changing the fluid therein, thereby making itself cleansing. The branch pipe,
reservoir or chamber B, is open only at the end C (see Fig. 3) in connection with the

page_text: bend so that when the flush water flows into the trap, the trap, the reservoir_or
chamber B is filled with fluid whenever the fluid in the bend is above its level. The
action of a trap constructed as described is as follows:-
When the sewer pipe is flushed the syphon action of the discharge pipe to sewer
together with the rush of fluid will carry nearly all the fluid out of the bend A, this
action however cannot draw the fluid out of the chamber B, as the suction is insufficient
to overcome the partial vacuum formed at the closed end of said chamber. As soon
as the flush water has reached the sewer through the pipe connected to the discharge
side of trap the suction through the bend A, of trap will cease and fluid will flow out
of chamber B, through its open end C, and re-seal the trap. When ever fluid
through, the trap, part of it is deflected by the particular shape of the bend into
chamber B, circulation is set up and its contents changed, thereby the chamber is
cleansed automatically.
passes
I sometimes mount a branch pipe B upon both sides of bend A, as in Fig. 2, or upon
opposite sides of either receiving or discharging side of trap. The branch pipe,
reservoir or chamber B, may be made solid with the trap or connected to bend A by
a union E¹ or solidly. by soldering as at E, Fig. 2. When the chamber is solidly
united to the bend, I insert a plug hole D for cleansing purposes.
Having now particularly described and ascertained the nature of my said Inven-
tion, and in what manner the same is to be performed, 1 declare that what I
claim is :-
1. The combination with a Sanitary Trap of a branch pipe, reservoir, or chamber
so mounted thereon as that its contents are changed and said chamber cleansed by the
action of the fluid passing through the trap as set forth.
2. The combination with a Sanitary trap formed with a U bend of one or more
branch pipes, reservoirs or chambers B, having open ends C, solidly or removeably
united to said trap for the purpose of constantly sealing the same in the way and
manner described.
3. In a branch pipe, reservoir or chamber solidly united to a sanitary trap, in the
manner described the plug hole D for cleansing the same.
Dated Octaban 11th 1888
FRANCIS M. ROGERS,
Applicant's Agent.