IMPROVEMENTS IN STENCH TRAPS
Year: 1885

page_text: :
I JOHN SMITH of Openshaw Bridge Iron Works Openshaw in the County
of Lancaster Ironfounder do hereby declare the nature of my invention for
IMPROVEMENTS IN STENCH TRAPS to be as follows:-.
L
This invention relates to improvements in the construction and manufacture of
stench traps whereby they are more easily and economically. cast and are more
accessible and more durable than those heretofore made.
Hitherto the box or body of these traps (together with the upper and lower
midfeathers) has been all cast in one piece, the interior being formed by means of
a core of dry sand, and the grid has been attached thereto by means of two
wrought iron hinge pins.
According to my invention the expense and labor of forming a dry sand core are
entirely dispensed with and the whole can be cast in a simple green sand mould.
The drilling and fitting of the wrought iron hinge pins also is not required and
access can be had to the interior of the box above the discharge opening at any
time for cleaning out or other purposes.
I cast the box quite open at the top and closed at the bottom (excepting the
discharge opening) and the lower midfeather is also cast therewith and at or about
the centre of the latter I cast an upright pillar, and to the sides I cast supports
for the hinge pins of the grid. This forms all one casting which can be made in
green sand without any core. The grid is a second casting and has two cast iron
hinge pins or studs which rest upon the supports above named. A third casting
consists of the lid, the upper midfeather and two hooks which come above the two
hinge pins or studs of the grid and so complete the hinge. The lid is set in cement
and is fixed by means of a screw which passes through it and into a screwed hole
cast or formed in the top of. the pillar, which projects from the, bottom of the box.
It will be evident that by removing this screw access can at any time be had to
the interior of the box above the discharge opening.

page_text: I JOHN SMITH of Openshaw Bridge Iron Works Openshaw in the County of
Lancaster Ironfounder do hereby declare the nature of my invention for "IMPROVE-
MENTS IN STENCH TRAPS" and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement :-
This invention relates to improvements in the construction and manufacture of
stench traps whereby they are more easily and economically cast and are more
accessible and more durable than those heretofore made.
Hitherto the box or body of these traps (together with the upper and lower
midfeathers) has been all cast in one piece, the interior being formed by means of
a core of dry sand, and the grid has been attached thereto by means of two
wrought iron hinge-pins.
According to my invention the expense and labor of forming a dry sand core are
entirely dispensed with and the whole can be cast in a simple green sand mould.
The drilling and fitting of the wrought iron hinge pins also is not required and
access can be had to the interior of the box above the discharge opening at any
time for cleaning out or other purposes.
Such being the nature and object of my said invention I will now proceed to
describe in detail the manner in which the same is to be or may be performed or
carried into practical effect, and in order that the same may be clearly understood
I have annexed hereunto a sheet of drawings illustrative thereof and have marked
the same with Figures and letters of reference corresponding with those in the
following explanation thereof.
On the drawings annexed Fig. 1. is a plan view of the box of my improved trap.
Fig. 2. is a similar view of the grid, and Fig. 3. is an underneath plan view of the
lid of the same.
Fig. 4 is a vertical longitudinal section. through my improved stench trap
complete.
I cast the box a, a quite open at the top and closed at the bottom (excepting the
discharge opening b, b) and the lower midfeather c, c is also cast therewith and at
or about the centre of the latter I cast an upright pillar d, d and to the sides
I cast supports e, e for the hinge pins f, f of the grid g, g. This forms all oue
casting (see Fig. 1) which can be made in green sand without any core. The
grid g, g is a second casting (see Fig. 2) and has two cast iron hinge pins or
studs, which rest upon the supports e, e above named.
A third casting (see Fig. 3) consists of the lid k, k the upper midfeather 1, 1, and
two hooks m, m which come above the two hinge pins or studs f, f of the grid g, g
and so complete the hinge. The lid k k is set in cement and is fixed by means of
a screw n, n which passes through it and into a screwed hole cast or formed in the
top of the pillar d, d which projects from the bottom of the box a, a.
It will be evident that by removing this screw n, n access can at any time be
bad to the interior of the box above the discharge opening.

page_text: Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed I declare that what
I claim is
The improved construction of Stench trap, substantially as hereinbefore described
and illustrated by the drawing annexed, being cast in three parts in an ordinary
green sand mould whereby the use of a dry sand core and the drilling and fitting
of wrought iron hinge pins are dispensed with.