AN IMPROVED TRAP FOR DRAINS AND SEWERS
Year: 1881

page_text: LETTERS PATENT to Frederick William Hagen, Architect, and George Cooper
Akrigg, Ironmonger, both of the Town of Kingston-upon-Hull, in the County
of the same Town, for an Invention of "AN IMPROVED TRAP FOR DRAINS
AND SEWERS."
PROVISIONAL SPECIFICATION left by the said Frederick William Hagen
and George Cooper Akrigg at the Office of the Commissioners of Patents
on the 28th March 1881.
•
FREDERICK WILLIAM HAGEN, Architect, and GEORGE COOPER AKRIGG,
Ironmonger, both of the Town of Kingston-upon-Hull, in the County of the
same Town,
"AN IMPROVED TRAP FOR DRAINS AND SEWERS."
The object of our Invention is to arrest and prevent any solid matter from
passing into drains or sewers.
We make the body of the trap beneath the grid or grating in the form of a
well either square, cylindrical, or of other form in horizontal section closed at the
bottom, and with a side opening and curved syphon pipe to form connection with
the drain or sewer. Above the opening is a projecting rim which supports an
inner removable case or lining. This inner case or lining is made of a similar
section to the body of the trap, being open at the top and closed at the bottom and
having a grating or perforations all round opposite to the side opening and syphon
pipe, and being provided with a handle at the top.
It will be evident that all matters passing through the surface grating will fall
into the inner trap or lining, and that all liquid will pass out through the side
perforations or grating of the latter and thence by the syphon pipe to the drain
or sewer whilst all solid matters will be retained in the inner trap or lining.
As the latter becomes filled, or partially so, with solid matter it can on raising
the surface grating be readily lifted out by its handle, emptied, and replaced.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Frederick William Hagen and George Cooper Akrigg in the
Great Seal Patent Office on the 27th September 1881.
FREDERICK WILLIAM HAGEN, Architect, and GEORGE COOPER AKRIGG,
Ironmonger, both of the Town of Kingston-upon-Hull, in the County of the ||
same Town. "AN IMPROVED TRAP FOR DRAINS AND SEWERS."
The object of our Invention is to arrest and prevent any solid matter from
passing into drains or sewers.
We make the body of the trap beneath the grid or grating in the form of a
well either square, cylindrical, or of other form in horizontal section closed at the
bottom, and with a side opening and curved syphon pipe to form connection with
the drain or sewer. Above the opening is a projecting rim, which supports an
inner removable case or lining. This inner case or lining is made of a similar
section to the body of the trap, being open at the top and closed at the bottom,
and having a grating or perforations all round or opposite to the side opening
only of the syphon pipe, and being provided with a handle at the top.
But to make our Invention better. understood we will, proceed to describe the
same, by reference to the accompanying Drawing, which represents a vertical
section of a trap constructed according to our Invention.
"
a is the body of the trap in the form of a well, and of suitable form in horizontal
section; b, the grid or grating; c, is the side opening to which is attached the
usual curved syphon pipe to form communication with the drain or sewer; d is
the projecting rim above the opening c, and e is the removable case or lining;
f, the perforations in the case or lining e, and.g the handle.
From this construction of trap it will be evident that all matters passing through
the surface grating 6 will fall into the inner trap or lining e, and that all liquid
will pass out through the side perforations f, and thence through the side opening o
and syphon pipe to the drain or sewer, whilst all solid matters will be retained in
the inner trap or lining. When the latter becomes filled or partially so with solid
matter it can, on raising the surface grating b, be readily lifted out by its handle g,
emptied and replaced.
Having thus described our said Invention, and the best means of carrying the
same into effect, we wish it to be understood that what we claim and intend to be
protected by the herein in part recited Letter Patent is,―
Firstly. The construction and employment of the improved trap for drains and
sewers, arranged and operating substantially as hereinbefore described and
represented in the accompanying Drawing, or any mere modification thereof.
Secondly. In a trap for drains and sewers we claim the combination with the
body or well, having a side opening, of a removable perforated inner trap or
lining, as and for the purposes herein before described and represented in the
accompanying Drawing.
In witness whereof, I, the said George Cooper Akrigg, for and on behalf of
myself and the said Frederick William Hagen, have hereto set my hand
and seal, this Twenty second day of September, in the year of our Lord