IMPROVEMENTS IN STENCH TRAPS AS APPLIED TO SINK PIPES AND SIMILAR PURPOSES
Year: 1877

page_text: LETTERS PATENT to Joseph Easby, of Sheffield, in the County of York,
Whitesmith, for the Invention. of "IMPROVEMENTS IN STENCH TRAPS AS
APPLIED TO SINK PIPES AND SIMILAR PURPOSES."
Sealed the 5th February 1878, and dated the 21st August 1877.
"
PROVISIONAL SPECIFICATION left by the said Joseph Easby at the Office of
the Commissioners of Patents on the 21st August 1877.
JOSEPH EASBY, of Sheffield, in the County of York, Whitesmith. IMPROVE-
MENTS IN STENCH TRAPS AS APPLIED TO SINK PIPES AND SIMILAR PURPOSES."
My Invention relates to an improved and very simple arrangement of "stench
trap," more particularly adapted to the carrying off of noxious vapours arising.
from sink pipes and other similar conduits or receptacles.
In carrying out my Invention, as applied, for example, in connection with the
ordinary sink pipes of cottage property, for the purpose of carrying off the effluvia
arising from the drain, I construct the trap, by preference, of cast iron, and .con-
sisting of a short vertical pipe or cylinder, open at the bottom end, and provided
with a suitable opening on one side for the sink pipe. The top is covered with a
grate or grating, which I prefer to be cast in one piece with the vertical pipe, but
in some cases it may be made loose. This grate may be square, round, or other
convenient shape, as desired, and it is let into the ground over the end of the sink
pipe on the outside of the house or cottage enclosing the end of the pipe, and
opening into the drain. The top or grate is arranged to be flush with the ground,
and the effluvia arising from the drain will be carried off by the grate instead of
entering the cottage or house by the sink pipe.
In some cases I modify the arrangement by forming an opening in the ground,.
and dispensing with the vertical pipe or cylinder, simply cover the top with the
ventilating grate, for the purpose before described.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Joseph Easby in the Great Seal Patent Office on the 19th February
1878.
JOSEPH EASBY, of Sheffield, in the County of York, Whitesmith. "IMPROVE-
MENTS IN STENCH TRAPS AS APPLIED TO SINK PIPES AND SIMILAR PURPOSES."
My improvements relate to traps or apparatus for carrying off stenches, vapours,
gases, and the like, arising from pipes, conduits, or receptacles of human excrement.
I construct my improved apparatus, by preference, of cast iron, but other suitable
materials may be used.
In the accompanying Sheet of Drawings,-
Fig. 1 shows a vertical section of a trap, into which a pipe is led, which said pipe
terminates in a bend so as to form a syphon to prevent foul air rising into the said
pipe; Fig. 2 shows a plan of the improved trap; and Fig. 3, a transverse section
through the line A, A, (Fig. 1.)
Fig. 4 shows a vertical section of a trap with a dished top, designed to carry off
surface water as well as ventilate the pipe on which it is fixed, and it also shows a
straight pipe led into the aperture at the side of the trap; Fig. 5 shows a plan of
the same; and Fig. 6 shows a transverse section of the same through the line B, B,
(Fig. 4.)
"
Fig. 7 shows a vertical section of a trap suitable for placing on a building; and
Fig. 8 shows a transverse section through the line C, C, (Fig. 7).
Fig. 9 shows a side view of my improved trap as applied to a closet," in which
H is the receptacle or pan; J, the lever; K, the handle; L, the door of the pan;
M, the trap. When the "closet" has been used the handle K is depressed and the
end of the lever J raised, which opens the door L, allowing the contents of the
receptacle or pan H to escape. The india-rubber bands N will cause the door L to
close. When the handle K is released any stench rising from the pit will ascend
the tube O, and escape through the trap M placed on the building.
When water is used with a closet of this description, and a fall pipe also is
employed, the trap M can be used therewith by connecting the tube O to the fall
pipe, which carries the contents of the receptacle or pan into the drain.
Having now clearly described and ascertained the nature of my said Invention,
and in what manner the same is or can be carried into effect, I wish it to be
understood that what I claim as the Invention secured to me by the herein in part
recited Letters Patent is, improvements in traps or apparatus, as herein described
and drawn, applicable to receptacles of human excrement, conduits, and pipes, for
the purpose herein specified.
In witness whereof, I, the said Joseph Easby, have hereunto set my hand
and seal, this Sixteenth day of February, in the year of our Lord One
thousand eight hundred and seventy-eight.