An Improved Drain Trap.
Year: 1894

page_text: Date of Application, 16th May, 1894
Complete Specification Left, 16th F. b., 1835-Accepted, 16th Mar., 1895
PROVISIONAL SPECIFICATION.
An Improved Drain Trap.
I, JASPER PARROTT PENWILL, of 2, Upper Walnut Road, Cockington,
Torquay, Builder, do hereby declare the nature of this invention to be as follows:-
In the improved drain trap in which this invention consists the fresh air inlet,
instead of being at the top, is at one side of the trap. Similarly, the sewer
ventilating exit at the opposite end is also at one side, either at the same side as
the air inlet or at the opposite side. By virtue of this arrangement both the air
inlet and sewer ventilation pipes are more conveniently disposed and attached to
the trap and are conducted away therefrom with greater facility.
In cases where the depth to which the trap is sunk is comparatively shallow, the
pipes aforesaid, being at the side and lower than the top, are buried before the
top and hence they do not require to have the level of the ground raised on their
account.
The openings at the top at which the said pipes have hitherto been attached are
retained and are fitted with removable caps or covers. They serve as openings for
inspection and cleansing. Further, the top opening at the sewer end of the trap
serves as an aperture for introducing smoke or other tests for proving the
ventilation the cap or cover thereof being, of course, first removed for the
purpose.
Dated this. 15th day of May. 1894.
NICHOLAS WATTS,
Bristol, Chartered Patent Agent.
An Improved Drain Trap.
I, JASPER PARROTT PENWILL, of 2, Upper Walnut Road, Cockington,
Torquay, Builder, 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:-
In the improved drain trap in which this invention consists the fresh air inlet,
instead of being at the top, is at one side of the trap. Similarly, the sewer
ventilating exit at the opposite end is also at one side, either at the same side as
the air inlet or at the opposite side. By virtue of this arrangement both the air
inlet and sewer ventilation pipes are more conveniently disposed and attached to
the trap and are conducted away therefrom with greater facility, and in cases
where the available or determined depth for burying the trap is comparatively
shallow, raising the level of the adjacent ground for the purpose of covering the
pipes is not so liable to be necessitated. The openings at the top at which the said
pipes have hitherto been attached are retained and are fitted with removable caps
or covers. They serve as openings for inspection and cleansing. Further, the top
opening at the sewer end of the trap serves as an aperture for introducing smoke
or other tests for proving the ventilation; the cap or cover thereof being, of
course, first removed for the purpose.

page_text: In the accompanying sheet of drawings Fig. 1 represents, in vertical section,
and Fig. 2 in plan one form of my improved drain trap.
The inlet a by which fresh air is admitted to the house drain is, as shown, at one
side, instead of being, as heretofore, at the top. The exit b, for escape of foul air
and gas from the sewer side of the trap, is also similarly placed.
By having the inlet a and the exit b at the side, the pipes connected to them
respectively can be attached without necessitating bends, and in cases where the
available or determined depth for burying the trap is comparatively shallow,
raising the level of the adjacent ground for the purpose of covering the pipes is
not so liable to be necessitated.
In the example illustrated in the drawings the inlet a and the exit b are shown
as at the same side of the trap. They may, however, be at opposite sides.
The openings c and d at opposite ends of the trap serve as apertures for
inspection and cleansing the trap.
The opening d at the sewer end of the trap serves also as an aperture for applying
smoke or other tests for proving the ventilation.
Destruction of pipes, hitherto frequently necessary when traps are cleansed or
ventilation is tested, is obviated.
The openings c and d are normally kept closed by suitable caps c¹ and d¹ which
are readily removed and replaced.
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
A drain trap having the fresh air inlet and the foul air and sewer gas outlet
situated below the top of the trap and both at one side or each at opposite sides of
the trap, substantially as hereinbefore described with reference to the accompanying
sheet of illustrative drawings.
Dated this 15th day of February 1895.