AN IMPROVED DRY STENCH TRAP TO PREVENT THE EFFLUVIA ARISING FROM STREET AND OTHER DRAINS
Year: 1876

page_text: LETTERS PATENT to Henry Harrison, of Fenny Stratford, in the County of
Bucks, Engineer, for the Invention of "AN IMPROVED DRY STENCH TRAP TO
PREVENT THE EFFLUVIA ARISING FROM STREET AND OTHER DRAINS."
Scaled the 3rd November 1876, and dated the 10th May 1876.
PROVISIONAL SPECIFICATION left by the said Henry Harrison, at the
Office of the Commissioners of Patents on the 10th May 1876.
HENRY HARRISON, of Fenny Stratford, in the County of Bucks, Engineer. "AN
IMPROVED DRY STENCH TRAP TO PREVENT THE EFFLUVIA ARISING FROM STREET
AND OTHER DRAINS."
According to this Invention I form a strong iron frame, to be bedded on brick
work, which said brick work shall form a gully for the reception of street washings
or sweepings. I also make an iron grate, to be fitted into the said frame with a pan,
cast or screwed on the said grate, and the pan shall be fitted and fixed in the frame
with cars.
Bolts are passed through the cars so that they may act as joints for
raising the grate and pan clear out of the gully hole for the purpose of examination
or repairs, and also for the purpose of cleaning out tho gully hole when necessary.
The said pan shall have a mouthpicce or delivery opening, and be fitted with a flap
or lid to cover the said opening in a vertical or other position, and in such a manner
that a flow of water shall push it open, and upon the flow of water ceasing the flap
or lid shall automatically cluse itself so as to prevent the foul gases arising from the
drain or gully from escaping. The said flap or lid shall also be applicable to existing
or other stench traps.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by the
said Henry Harrison, in the Great Seal Patent Office on the 10th November
1876.
HENRY HARRISON, of Fenny Stratford, in the County of Bucks, Engineer. "AN
IMPROVED DRY STENCH TRAP TO PREVENT THE EFFLUVIA ARISING FROM STREET
AND OTHER DRAINS."
The object of this Invention is to prevent the effluvia from rising from street and
other drains.
According to this Invention I form a strong iron frame, to be bedded in brick
work, which said brick work shall form a gully for the reception of street washings
or sweepings. I also make an iron grate, to be fitted into the said frame with a pan
cast or screwed on the said grate, and the pan shall be fitted and fixed in the frame
with ears.
Bolts are passed through the cars so that they may act as joints for
raising the grate and pan clear out of the gully hole for the purpose of examination or
repairs, and also for the purpose of cleaning out the gully hole when necessary. The
said pan shall have a mouthpiece or delivery opening, and be fitted with a flap or
lid to cover the said opening in a vertical or other position, and in such a manner
that a flow of water shall push it open, and upon the flow of water ceasing tho flap
or lid shall automatically close itself so as to prevent the foul gases arising from the
drain or gully from escaping. The said flap or lid shall also be applicable to existing
or other stench traps.
I provide an outlet for the gases that may accumulate in the sewers and drains
by putting a flue or flues at the highest levels of the same, or by using the house
drains to be carried beneath the house tops, thence to be conveyed to a fluc pur-
posely built in the houses, or by separate chimneys over the house tops, so that the
fresh air would descend by slightly opening the trap lids and ascending the same
flues or chimneys. The same shall apply to waterclosets, privies, cesspools, and
urinals, with a suitable pipe or flue connected with the under side of such closets,
privies, sinks, cesspools, and urinals by the fresh air descending through the closets
and privy seats, and from openings in the bottoms of urinals and underneath sinks,
and up the flue or chimney, whereby all the foul guses are conveyed over the house
tops, and the bad effects of such gases destroyed by mixing with the atmosphere
above.
And in order that my said Invention may be readily understood I will proceed to
describe the same by the aid of the annexed Drawings.
DESCRIPTION OF THE DRAWINGS,
Figure 1 represents a longitudinal sectional elevation of a sewer fitted with the
improved dry stench trap; Fig. 2 represents a plan of the same.
a, a, a, a, is the iron frame which is bedded in brickwork; b, b, is an iron grating
fitted to the frame; c, c, is a pan cast or screwed on the said grating; d, d, are cars
To the frame
for fixing the grating b, b, and pan c, c, connected with the same.
u, a, a, a, the bolts e, e, are passed through the ears d, d, for the purpose of acting
as a joint for raising the grating and pan clear out of the gully hole; ff, is a
mouthpiece or delivery opening in the pan e filled with a flap g, g, to cover the said
opening this flap or lid is fitted in a vertical or other suitable position, so that the
flow of water, as indicated by the arrows, shall push the flap open, and on the flow
of water ceasing it shall automatically close itself, thus preventing the escape of any
foul gases. The incline O is a stop to prevent the water from rushing over the
grate, which might occur in a heavy rain; h, k, l, h, are flues or outlets, which 1
may sometimes use in combination with my dry stench trap for the gases that may
accumulate in the sewers or other receptacles.
Having thus described and particularly ascertained the nature and object of my
said Invention, I declare that what 1 claim and desire to be secured to me by the

page_text: herein-before in part recited Letters Patent is, the general arrangement and construc-
tion of an improved dry stench trap for preventing the effluvia arising from street
an other drains, substantially as hercin-before described and shown on the Drawings,
or any more modification thereof.
In witness whereof, I, the said Henry Harrison, have hereunto set my hand and
seal, this Eighth day of November, in the year of our Lord One thousand
eight hundred and seventy-six.
· HENRY HARRISON. (L.S.)