IMPROVEMENTS IN TRAPS FOR SEWERS
Year: 1877

page_text: LETTERS PATENT to George Lamb Scott, junior, of Manchester, in the County
of Lancaster, Engineer, for the Invention of "IMPROVEMENTS IN TRAPS FOR
SEWERS."
Sealed the 5th February 1878, and dated the 9th August 1877.
PROVISIONAL SPECIFICATION left by the said George Lamb Scott at the
Office of the Commissioners of Patents on the 9th August 1877.
GEORGE LAMB SCOTT, junior, of Manchester, in the County of Lancaster, Engineer.
"IMPROVEMENTS IN TRAPS FOR SEWERS."
My Invention consists in an arrangement of sewer trap in which there is. a
chamber for the settlement of mud separate from that through which the water
flows away, the drainage being conducted in the first instance to the said chamber.
To the grid I attach a spout which extends downward into a chamber which is
surrounded by an outer casing, and from this a trapped exit for the water extends.
The drainage flowing through the grid is conducted by the spout into the central
chamber, and overflowing. therefrom passes into the outer chamber, and from thence
into the sewer, mud being deposited in the said central chamber.
At the lower part of the central chamber I place a false bottom or plate, which
may be drawn up, and with it the sediment, by any suitable instrument inserted
at top.

page_text: PECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said George Lamb Scott in the Great Seal Patent Office on the 9th
February 1878.
GEORGE LAMB SCOTT, junior, of Manchester, in the County of Lancaster, Engineer.
"IMPROVEMENTS IN TRAPS FOR SEWERS."
My Invention consists in an arrangement of sewer trap in which there is a
chamber for the settlement of mud separate from that through which the water
flows away, the drainage being conducted in the first instance to the said chamber.
Figs. 1 and 2 represent in vertical section and plan views a trap made according
to my Invention, and suitable for yard or domestic purposes. At a is a casting
forming the main body of the trap, and with this is formed a part b which extends
upward into the chamber formed by the part a. At c is the grid forming the
bottom of a rectangular shaped funnel d, an upper flange e of which is adapted to
a recess in the top of the part a. At is the discharge pipe formed with two
feathers g, h, the ends of which project beyond each other so as to constitute a
trap. The fluid matter to be drained off passes through the grid c into the
chamber A formed by the part b, and solid matters which pass with the said fluid
settle on the bottom of the chamber A, the clear or partially clear fluid running
over the top of the part b into the chamber B, and from thence through the
discharge pipe f into the sewer, such pipe being adapted thereto in any usual
manner; but the level of the fluid being maintained between the ends of the
feathers g, h, as shewn by the dotted line i, k, the discharge pipe will always be
trapped, while the chamber A will also be partially trapped by the funnel d dipping
therein, which funnel also tends to prevent a disturbance of the settled mud. The
trap thus formed is adapted to the surface of the yard in any suitable manner as
usual.
Figs. 3, 4, and 5 shew my Invention in another form, and suitable for street
purposes. At a is the main part before referred to, and which in like manner has a
chamber A formed therein, but in this case one side of the said chamber is cast
with the part a. At c is the grid with its dipping funnel d, formed in this case-in
two parts, and at. f. the discharge pipe trapped, as before, by feathers g, h; in this
case, however, the chamber B on two sides is bevilled off, as shewn at m in Fig. 4,
and by the dotted line in Fig. 3. At n is a plate provided with a rod o, and which
may be drawn upward by a hook when the grid is removed in order to extract the
settled deposit.
Having thus described and ascertained the nature of my said Invention and the
manner in which the same is to be performed, I desire it to be understood that I
claim as secured to me under the above in part recited Letters Patent and for the
purpose above set forth, the arrangement of water and mud chambers and grid
funnel, substantially as described.
In witness whereof, I, the said George Lamb Scott, junior, have hereunto set
my hand and seal, this Eighth day of February, in the year of our Lord
One thousand eight hundred and seventy-eight.
I..