AN IMPROVED METHOD OF SEWER VENTILATION AND IN APPARATUS THEREFOR
Year: 1872

page_text: LETTERS PATENT to Richard James Johnson, of No. 10, Victoria
Road, Hatcham, in the County of Surrey, Builder, for the Invention
of "AN IMPROVED METHOD OF SEWER VENTILATION AND IN APPARATUS
THEREFOR."
Sealed the 14th January 1873, and dated the 15th July 1872.
PROVISIONAL SPECIFICATION left by the said Richard James Johnson
at the Office of the Commissioners of Patents, with his Petition,
on the 15th July 1872.
I, RICHARD JAMES JOHNSON, of No. 10, Victoria Road, Hatcham
in the County of Surrey, Builder, do hereby declare the nature of the
said Invention for "AN IMPROVED METHOD OF SEWER VENTILATION AND IN
APPARATUS THEREFOR," to be as follows:-
My Invention consists in the external application of heat to pipes
for ventilating sewers or drains by means of a proper length of iron
or other metal pipe wholly or partly encased in fire-brick, and heated by
contact with fire, as shewn in the annexed Drawings with the references
thereto forming part of this my Provisional Specification.

page_text: Figure 1, Sheet 1, shews fire-brick forming back of stove or range;
Figure 2, Sheet 1, shews portable condenser encased with fire-brick;
Figure 3, Sheet 1, shews a pipe composed of iron or other metal heated
by fire-brick, and condenser, as shewn in Figures 1 and 2, Sheet 1, so
as to rarefy the air; Figure 4, Sheet 1, shews a pipe leading from the
house drain to top of house; Figure 5, Sheet 1, shews house drain
leading into sewer.
Figure 1, Sheet 2, shews fire-brick attached to furnace, and portable
condenser; Figure 2, Sheet 2, shews portable condenser; Figure 3,
Sheet 2, shews a pipe composed of iron or other metal heated by fire-
brick, and condenser so as to rarefy the air; Figure 4, Sheet 2, shews
pipe in connexion with iron or other metal pipe, and leading to top of
shaft; Figure 5, Sheet 2, shews pipe leading from shaft into main sewer;
Figure 6, Sheet 2, shews frame consisting of copper or other metal
gauze Figure 7, Sheet 2, shews stoke hole of furnace for consuming
the gases.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Richard James Johnson in the Great Seal Patent
Office on the 14th January 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, RICHARD
JAMES JOHNSON, of No. 10, Victoria Road, Hatcham, in the County of
Surrey, Builder, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifteenth day of July, in the year
of our Lord One thousand eight hundred and seventy-two, in the thirty-
sixth year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said Richard James Johnson, Her special licence that
I, the said Richard James Johnson, my executors, administrators, and
assigns, or such others as I, the said Richard James Johnson, my exe-
cutors, administrators, and assigns, should at any time agree with, and
no others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "AN IMPROVED
METHOD OF SEWER VENTILATION AND IN APPARATUS THEREFOR," upon the con-

page_text: dition (amongst others) that I, the said Richard James Johnson, my
executors or administrators, by an instrument in writing under my,
or their, or one of their hands and seals, should particularly describe
and ascertain the nature of the said Invention, and in what manner
the same was to be performed, and cause the same to be filed in the
Great Seal Patent Office within six calendar months next and imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Richard James Johnson, do hereby
declare the nature of my said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained
in and by the following statement :——
My Invention consists in the application of external or internal heat
to pipes for ventilating sewers or house drains by means of a proper
length of iron or other metal pipe wholly or partly encased in fire-brick
and heated by contact with fire or gas.
The manner in which my Invention is to be performed will be fully
understood by the following description thereof, reference being had to
the letters on the accompanying Drawings.
Fig. 1 has reference to my improved system of ventilation as applied
to ordinary house drains in connection with sewers. a shews fire-brick
forming back of stove or range; b, portable condenser; c shews a pipe
composed of iron or other metal heated by fire-brick and condenser as
shewn at a and b, so as to rarefy the air; d shews a pipe leading from
the house drain to top of house; e shews house drain leading into
sewer.
Fig. 2 has reference to my improved system of ventilation as applied
to sewers. f shews fire-brick attached to furnace and portable condenser;
9 shews portable condenser; h shews pipe composed of iron or other
metal heated by fire-brick and portable condenser so as to rarefy the
air; i shews pipe in connection with iron or other metal pipe leading
to top of shaft; ; shews pipe leading from shaft into sewer; k shews
frame consisting of copper or other metal gauze to prevent the flame
entering into the sewer; ? shews stoke hole of the furnace for condensing
the gases by means of coke, charcoal, gas jets, or any other suitable
fuel.

page_text: '
Fig. 4 has also reference to my improved system of ventilation as
applied to sewers. m shews fire-brick heated by furnace for consuming
the gases arising from the sewers by means of coke, charcoal, gas jets, or
any other suitable fuel; n shews. chamber for rarefying the gases which
ascend from sewer; o and p shew pipe leading to sewer; q shews flue
for carrying off the gases which have been consumed; " shews box
containing the copper or other metal gauze to prevent the flame entering
the sewer; & shews the stoke hole; t shews furnace for combustion of the
sewer gases by means of coke, charcoal, gas jets, or any other suitable
fuel.
Having now described the nature and particulars of my said Invention,
and the manner in which the same is to be performed, I desire it to be
understood that what I claim as my Invention is, the improved method
of sewer and house drain ventilation, and in apparatus therefor, substan-
tially as herein described and illustrated on the accompanying Sheet of
Drawings.
In witness whereof, I, the said Richard James Johnson, have
hereunto set my hand and seal, this 11th day of January, in
the year of our Lord One thousand eight hundred and seventy-
three.
Witness,
W. J. STEVENS,
Patent Agent,
42, Edith Road,
Peckham.
R. J. JOHNSON. (L.S.)
'