Improved Stench Trap for Discharge Basins, Sinks and the like.
Year: 1899

page_text: Date of Application, 30th Mar., 1899-Accepted, 6th May, 1899
COMPLETE SPECIFICATION.
Improved Stench Trap for Discharge Basins, Sinks and the like.
I, EWALD HAENDELER, Master Tinsmith, of 17, Neue Nordstrasse, Elberfeld,
in the Empire of Germany, 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 stench traps hitherto employed in connection with sinks and the like,
have several disadvantages. On the one hand, the discharge openings in the
silt-box easily become stopped up and on the other, the obnoxious smells arising
from the discharge pipe are only partially shut off. A further drawback is that
the putting in and taking out of the silt-box are attended with considerable in-
convenience, so that it frequently occurs that the use of that apparatus is sus-
pended for a time.
These well-known disadvantages are entirely obviated by the improved con-
struction of stench trap as hereinafter described.
The invention is illustrated by way of example in the accompanying drawing.
It consists in arranging the discharge openings on the sides of the silt-box, so
that an accumulation of mud and consequently the stopping up of the openings
is entirely prevented; further an absolutely effective double trap is obtained;
and finally the putting in and taking out of the silt-box is rendered easy and
simple by means of an operating rod arranged thereon.
Fig. 1 is a sectional elevation of a stench trap constructed according to this
invention.
Fig. 2 a perspective view of the silt-box.
Fig. 3 is an elevation in perspective of a drain inlet.
The stench trap consists of the socket a, to which the discharge pipe for the
water is joined. In the case of sink basins, the former is set in the gutter stone
or sink or in the case of cast iron and stone-ware discharge basins and
springs" forms a complete whole therewith.
" wall-
In the socket a two channels b and c are arranged which serve as water collec-
tors and in which the silt-box d and the inlet funnel or hopper e are suspended.
The silt-box d is in the form of a basin the upper edge being bent round
forming a curved flange by means of which the silt-box d is suspended in the
groove or channel b.
On the sides of the silt-box oblong slots fare formed for
the outlet of the water. In order to render the putting in and taking out of the
silt-box easy, a rod y with handle is attached to the bottom thereof.
The inlet funnel or hopper e is in the form of a truncated hollow cone, the base
of which is formed by the perforated drain cover h, the edge of which projecting
beyond the cone casing takes the form of a broad, open curved flange by means
of which the funnel is suspended in the groove or channel c.
The above-described stench trap is fitted as follows:-
The silt-box is put into the groove b, by means of the rod g, so that the
curved flange rests in the groove. The inlet funnel e is then put in position
with the curved flange, resting in the groove e the handle rod g g¹ being in-

page_text: serted through one of the sieve openings, the stench trap being then ready for
use. Its action is as follows:-
When the first lot of water is poured in, it flows at once into the channel c and
rises, at the same time likewise in the channel b, as it strikes on the bottom of
the silt-box d. A double trap is thus formed by means of the water collected
in the channels b and c and which shuts off the smells arising from the silt-box
as well as those from the waste pipe.
The water caught by the silt-box deposits any matter that may be carried
along with it and flows through the outlet openings f to the waste pipe. Any
stopping up of these openings is entirely prevented by their being arranged
on the sides of the silt-box.
In the accompanying drawing the course of the water is indicated by fully
drawn arrows, that of the obnoxious smells being shown by arrows formed of
broken lines.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is :-
1. Double stench trap for discharge basins, sinks and the like, the distinguish-
ing feature of which is the arrangement in the socket of two channel like water
seals and a silt-box furnished at its sides with discharge openings for the water
and having a handle rod fixed to the bottom thereof substantially as described.
2. The improved stench trap for discharge basins, sinks and the like substan-
tially as described with reference to the drawings.
Dated this 30th day of March 1899.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.