Improvements in Traps for Drains, Sinks, Gullies, or the like.
Year: 1899

page_text: Date of Application, 8th May, 1899-Accepted, 15th July, 1899
COMPLETE SPECIFICATION.
Improvements in Traps for Drains, Sinks, Gullies, or the like.
We, ÖDÖN PALOTAI, of Vörösmarty utcza 34, Director, and EUGENE HARSÁNYI,
Chemist, of Király utcza 93, Chemist, both of Budapest, in the Kingdom of
Hungary, do hereby declare the nature of this invention and what manner the.
same is to be performed to be particularly described and ascertained in and by
the following statement:--
Sanitary traps for drains or the like hitherto known have generally the dis-
advantage that if for any cause, suction occurs in the outlet pipe, the liquid
preventing the ascent of disagreeable smells is also sucked up and consequently
the gas ascending from the main sewer can escape.
The object of the present invention to prevent this disadvantage.
The improvements are shown in the annexed drawing in which
Fig. 1 represents a simple syphon trap in longitudinal section.
Fig. 2 the same in section.
Fig. 3 the same in plan view.
Fig. 4 a syphon of different construction in longitudinal section.
Fig. 5 a trap for water closets.
Figs. 6-9 traps for floor, draining in longitudinal section and plan view.
Figs. 10-12 gullies for street sewers.
The actually used sanitary traps wherein a liquid prevents the escape of the
gas, consist generally of a descending flowing in part a an ascending part 6 and
the outlet k. In the figures of the drawing these parts are marked with the same
reference letters.
The novelty of the present invention consists in adding hereto a fourth part,
which is called in the course of the description the compensation chamber and
is marked c. This compensation chamber communicates, as can he seen in the
drawing, below the level of the sealing liquid at e with the descending part of
the sanitary trap and above the level of the sealing liquid at d with the ascending
part and consequently with the outlet k of the sanitary trap.
If in the outlet pipe suction occurs and draws the sealing liquid with it towards
the outlet pipe, air can flow through e and d to the outlet thereby relieving the
partial vacuum caused by the falling liquid, and thus prevent an emptying of
the syphon so that a sufficient quantity of the sealing liquid always remains and
gas cannot flow out.
The manner of working is as follows: The level of the sealing liquid is usually
n―n but at the moment of suction the level is as shown in Fig. 1. At there is
a constant communication between the parts be but between a and c only when
in consequence of the suction in the outlet pipe the level of the sealing liquid
in room a sinks so that part of the opening e becomes free. The difference of
pressure in the parts is by the openings c and d at once equalised where upon
O the liquid rising to n-n the communication of the rooms and c taking place
through e closes so that no gas from the drain can escape. The action is repeated
awamu time a suction occurs in the outlet pipe.

page_text: The compensation chamber c can be soldered to or may be cast in one piece
with the syphon. The cleansing of the chamber is effected through the screw
opening (Fig. 1).
A modification is shown in Fig. 4; here the compensation chamber is obtained
by making the separating wall of the rooms a and b double.. The opening dis
formed so that the inner separating walls is shorter on the top than the outer
one and the opening e is formed so that the inner separating walls is longer
at its lower end than the outer one':. From the opening the compensation
chamber can be cleaned.
In Fig. 5 the improvement is shown in connection with water closets with liquid
seal. Herein the compensation chamber c is also obtained by doubling the
walls of the ascending part b. The cleansing of the room e is here also
effected through the screw threaded opening t.
For traps for floor draining this improvement can also be employed in the
manner shown in Figs. 6-9. The compensation chamber c is also in this instance
formed by doubling the separating wall between a and.b. The separating wall s
in the construction shown in Figs. 6-7 can be manufactured in one piece with
the cover and the openings d are arranged quite close to the, cover and occupy
the greatest part of the circumference of the separating wall s. The openinge
is formed by the outer separating wall being shorter than the inner one.
In the arrangement represented in Figs. 8 and 9 the inner separating wall s
is not made of one piece with the cover g but stands on feet f seated in hollows
in the bottom of the outer vessel, and "can consequently be taken away. The
opening is formed by the separating wall s not reaching to the cover g and the
opening e thereby that the outer separating wall is shorter than the inner one s.
A gulley for street channels is shown in Figs. 10-11. The mud collector
extends past the mouth of the sideward lying pipe whereby an annular chamber a
is formed between the collector and the sides of the trap, the sectional area of
the annular space should be approximately the same as that of the pipe b. The
liquid seal is formed by this annular space a and the pipe b. The compensation
chamber c is effected by introducing a bent sheet p into the pipe b: The sectional
form of the sheet ? shown in Fig. 11, the section of the tube b in Fig. 10.
The openings e and d are respectively arranged at the lower and upper end of
the sheet and are formed by the distance of the latter from the wall of tube b.
By means of the eye r the inserted sheet can be taken out and inserted, for
cleansing purposes.
Fig. 12 represents another construction of trap in which the compensation
chamber is also, as in the inlet of Figs. 6 and 7, formed by doubling the
separating wall and the openings d and e are formed in a similar. manner.
By lifting the mud collector the chamber c can also be cleaned.
"
The compensation chamber c, which as mentioned forms the means for prevent-
ing the sucking up of the liquid seal can in the manner shown in the described
examples he easily arranged on existing constructions.
In the practical use of the invention it must be observed that the sectional
area of the chambers a and b should be chosen as equal as possible. In order
to protect the sealing liquid from evaporating and in order to prevent decom-
position, some oil can be poured on it, which in this arrangement is practical as
it can not be sucked away as could be done in the traps formerly used when
greater quantities flow in.
.
Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed, we declare that what
we claim is: -
Improvements in traps for drains, sinks, gullies or the like for preventing the
sealing liquid from being removed by suction in which between the rooms a and b
receiving the sealing liquid a compensation chamber or chambers c is arranged
communicating with the rooms a and b through openings d and e in such a manner

page_text: that by differences in the level of the sealing liquid caused by suction in the
outlet pipe, the difference of air pressure between the rooms a and b is equalised
and the sealing liquid cannot escape.
HERBERT HADDAN & Co.,
Agents to Applicant,
18, Buckingham Street, Strand, London, W.C.