IMPROVEMENTS IN APPARATUS FOR THE TREATMENT OF HYDROCARBON GASES AND VAPOURS FOR ILLUMINATING AND HEATING PURPOSES
Year: 1872

page_text: LETTERS PATENT to James John Shedlock, of 1, Ellenboro' Road,
Upper Holloway, in the County of Middlesex, Engineer, for the
Invention of "IMPROVEMENTS IN APPARATUS FOR THE TREATMENT OF
HYDROCARBON GASES AND VAPOURS FOR ILLUMINATING AND HEATING
PURPOSES."
Scaled the 12th April 1873, and dated the 16th October 1872.
PROVISIONAL SPECIFICATION left by the said James John Shedlock
at the Office of the Commissioners of Patents, with his Petition,
on the 16th October 1872.
I, JAMES JOHN SHEDLOCK, of 1, Ellenboro' Road, Upper Holloway,
in the County of Middlesex, Engincer, do hereby declare the nature of
my said Invention for "IMPROVEMENTS IN APPARATUS FOR THE TREATMENT OF
HYDROCARBON GASES AND VAPOURS FOR ILLUMINATING AND HEATING PURPOSES," to
be as follows:-
The object of this Invention is the construction of apparatus for the
production of artificial light and heat by the treatment of hydrocarbon
gases and vapours, and for which purposes an outer case is provided

page_text: "
charged to the required level with any suitable liquid, and fitted with
inlet and outlet passages communicating from the exterior of the outer
case with the interior of two or more vessels carried by a shaft or shafts
A
and supported by bearings fixed in the interior of the outer case.
division is made in the case separating the vessels but allowing a com-
munication below the level of the liquid. The capacity of the vessels
contained in the outer case must be of the proportion of one to five, or
thereabouts, so that upon a permanent gas being made to pass through
the smaller vessel under pressure sufficient power is obtained thereby
to carry through the larger vessel a sufficient quantity of atmospheric
air to consume the gas passing through.
When a permanent gas cannot be obtained then power can be applied
by suitable arrangements to the shaft or shafts carrying the vessels
when atmospheric air will be forced through the vessels, the pressure
of which can be regulated by means of valves. The atmospheric
air is then conveyed by the outlet passages to a chamber divided
into two parts by a plate, the upper being the reservoir for a suitable
hydrocarbon liquid, and the lower so constructed as to expose a large
vapourising surface to the atmospheric air passing through it, and for
that purpose a number of cylinders of different diameters placed one
in the other are securely fixed to the plate forming the bottom of the
reservoir, and radiating vertical plates are fixed between each cylinder.
The smallest cylinder fitted with a number of perforated trays is carried
through the bottom of the reservoir and terminates in a box containing
a valve fixed in the top of the chamber. Holes are made in cach
cylinder alternating on either side of the radiating vertical plates.
Openings are made in the upper part of the reservoir for the purpose
of filling it with the hydrocarbon liquid, and the openings are protected
from injury and made perfectly air-tight by means of a collar screwed
on the outside, and having a pipe fixed into it, being made to pass
nearly to the bottom of the reservoir, and securely fixed to the upper part
thereof. The collar has upon the face of it an annular recess cut therein
into which is placed a composition not acted upon by the hydrocarbon
liquid. A cap provided with a screw to suit the screw on the collar,
and an annular projection upon its face corresponding in size with the
recess in the collar, is made to screw on to the collar and effectually
closes the opening when required. A pipe or pipes fitted with valves
or cocks regulate the supply of hydrocarbon liquid from the reservoir

page_text: to the chamber containing the cylinders. The spaces between the
cylinders and the spaces between the perforated trays in the smallest
cylinder are fitted with any material having an absorbent capillary
attraction for the hydrocarbon liquid, by which means the atmospheric
air in passing round the cylinders and up the smallest one containing
the perforated trays becomes saturated with the hydrocarbon vapours
given off from the liquid. The saturated air is then passed through
the valve box, by which means the pressure of the saturated air is
regulated in its passage to the burner, which is of the following con-
struction when required to exhibit a very powerful light:-The per-
manent gas and atmospheric air or the air saturated with the hydrocarbon
vapour, or it may be a mixture of the gas, atmospheric air, and
hydrocarbon vapour is made to pass through a perforated plate made
of any non-oxidizable or indestructible material when the mixed gases
and vapours are to be ignited, and a cap is made to enclose the flame.
This cap is of gauze made from an Itallic wire, non-corrodible and
capable of resisting the highest heats, but which becomes highly
luminous by the action of the flame of mixed gases and vapours.
For ordinary illuminating and heating purposes any of the common
argand, fish-tail, and bats' wing burners can be used, but it is better to
make all such burners of a material not easily oxidizable.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said James John Shedlock in the Great Seal Patent
Office on the 16th April 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
JOHN SHEDLOCK, of 1, Ellenboro' Road, Upper Holloway, in the County
of Middlesex, Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Sixteenth day of October, 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 James John Shedlock, Her special
licence that I, the said James John Shedlock, my executors, admini-
strators, and assigns, or such others as I, the said James John Shedlock,
my executors, administrators, and assigns, should at any time agree

page_text: "
with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make, usc,
exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for
Im-
PROVEMENTS IN APPARATUS FOR THE TREATMENT OF HYDROCARBON GASES AND
VAPOURS FOR ILLUMINATING AND HEATING PURPOSES," upon the condition
(amongst others) that I, the said James John Shedlock, my executors or
administrators, by an instrument in writing under my, or their, or one of
their hands and scals, 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 immediately after the date
of the said Letters Patent.
NOW KNOW YE, that I, the said James John Shedlock, 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:-
The object of this Invention is the construction of apparatus for the
treatment of hydrocarbon gases and vapours, whereby combinations of
a permanent gas and atmospheric air, or hydrocarbon vapour and
atmospheric air, or it may be a permanent gas, atmospheric air, and
hydrocarbon vapour are formed, by the combustion of which light
and heat are produced when one or other of the above combinations
of a permanent gas, air, and hydrocarbon vapour is consumed at properly
constructed burners. For these purposes an outer case is provided
charged to the required level with any suitable liquid, and fitted with
inlet and outlet passages communicating from the exterior of the outer
case with the interior of two or more vessels carried by a shaft or
shafts and supported by bearings fixed in the interior of the outer
casc. The vessels are provided with inlet and outlet passages through
which the gas or atmospheric air in passing is regulated, and a steady
and equal flow of the gas or atmospheric air is maintained. A division
is made in the case separating the vessels, but allowing a free passage
for the liquid below its level. The capacity of these vessels is regulated
so that the vessel through which a permanent gas is made to pass under
pressure shall be of about one to five of that through which the atmo-
spheric air is drawn, but the capacities may be varied to suit different
gases or the purpose for which they are to be applied. The atmospheric

page_text: air before being admitted to the vessels must be freed from any moisture
or vapour of water which it may contain, and for which purpose it may
be treated by any known process, such for instance as passing it over or
through sulphuric acid or lime.
When a permanent gas cannot be obtained, then any suitable con-
trivance for actuating the vessels can be attached to the shaft or shafts,
and atmospheric air will be drawn into and carried through the vessels
to the outlet passages, from whence it is forced into a chamber in which
a number of cylinders placed one in the other are securely attached
to a plate, which forms the bottom of a reservoir containing a suitable
hydrocarbon liquid. Holes are made in each cylinder alternating on
either side of radiating vertical plates placed between each cylinder,
and securely attached to the same plate as the cylinders. Pipes and
cocks or valves regulate the passage of the atmospheric air through
the whole or any number of the cylinders, whereby the complete or
partial saturation of the atmospheric air with the hydrocarbon vapour
will be effected. The smallest cylinder fitted with a series of perforated
trays passes through the reservoir and terminating in the upper part
thereof is fitted with valves or cocks for the purpose of regulating the
pressure of the gases or vapours passing off to the burners. A pipe
or pipes reaching to nearly the bottom of the reservoir are attached
to the upper part, the openings of which are protected from injury and
made sound by means of a collar having an annular recess cut into its
upper side, in which is placed a composition not affected by the hydro-
carbon liquid. A cap provided with an annular projection corresponding
with the recess in the collar is made to screw onto and form a joint
perfectly sound with the collar.
In some cases a cock or valve will answer the same purpose as the
collar and cap, and can be fitted in lieu thereof. The reservoir is
charged with the hydrocarbon liquid by means of these pipes, and the
chamber containing the cylinders is supplied with the liquid from the
reservoir by means of pipes and cocks or valves placed at the required
levels. The spaces between the cylinders and the perforated trays are
filled with a material having an absorbent capillary attraction for the
hydrocarbon liquid, whereby the atmospheric air or gas in passing
through the cylinders becomes impregnated with the vapours given off
from the liquid.
The mixture of permanent gas and atmospheric air may be carried

page_text: .
carrying with it the two vessels G, G, which are supplied by the
shaft I, I, and to which the vessel H is attached. Atmospheric air
will be drawn into the vessels G, G, through the holes in the box C
fitted with trays L containing lime which will absorb any moisture
contained in the air, and by the chamber R' through the pipes C³, C³,
and C and C, and discharged from the vessels G, G, through the
pipes F, F.
For heating purposes the permanent gas after passing through the
vessel H will ascend the pipe E and the atmospheric air will pass by
the pipes F, F, and combine with the permanent gas in the pipe Q, the
valves 6, 4, and 3 must in this case be closed, and the valves 1, 2, and 5
be opened. If it is required to charge the atmospheric air with hydro-
carbon vapour, then the valves 2 and 6 must be closed and the air
will be forced down the pipe S into the chamber and round the
cylinders o, o, o, through the openings 8, 8, 8, into the smallest
cylinder W containing the perforated trays X, X, X, X, and through
the valve 3 into the pipe Q and thence to the burners. For the
of impregnating the permanent gas and atmospheric air with hydro-
carbon vapour, then the valves 1 and 2 are closed and the valves 6, 5, 4,
and 3 are opened, and the combined gas and air will be carried by the
pipe S through the chamber O and up the smallest cylinder W into the
pipe Q.
purpose
When a permanent gas cannot be obtained to actuate the vessels
G, G, and H, then power can be applied to the pulley M and motion
will be carried through the geared wheels contained in the box N to the
shaft I, I, thereby causing the vessels G, G, H, to revolve, and by which
means atmospheric air will be drawn in through the holes in the box C
and the pipe D. The air will pass by the pipes C', C', D', and C², C³, D³,
through the vessels G, G, H, by the pipes E, F, F, through the valves
6, 5, and 4, and by the pipe S through the chamber O, and becoming
saturated with the hydrocarbon vapour will pass up the smallest
cylinder W through the valve 3 into the pipe Q, and conveyed by
suitable pipes and fittings to the burners.
When it is only necessary to partially saturate the permanent gas
or atmospheric air with hydrocarbon vapour, then instead of allowing
the gas or air to pass round the whole of the cylinders the three-way
valve V is so set that the gas or air after passing through a certain
number of the cylinders is made to pass through the pipe U direct

page_text: to the smallest cylinder W. The hydrocarbon liquid is supplied to the
reservoir R by the filling cap and collar Z and the pipe Y, and the
chamber is supplied with hydrocarbon liquid from the reservoir by
means of the cock or valve d, and the pipes e, f.
Having described the nature of my Invention, and explained the a
method of carrying the same into effect, that which I claim and desire to
have secured to me is,―
1st. The arrangement of vessels whereby a permanent gas under
pressure actuates them for the purpose of combining atmospheric air
therewith in any desired volumes.
2nd. The combination of the vessels (with the necessary inlet and
outlet pipes and valves or cocks) contained in a case charged with liquid
for the purpose of exhausting or forcing atmospheric air.
3rd. The method of saturating the gas or atmospheric air with hydro-
carbon vapour by forcing them through a chamber of the herein-before 1
explained construction.
4th. The combined arrangement of the apparatus, substantially and
for the purposes herein-before described.
In witness whereof, I, the said James John Shedlock, have here-
unto set my hand and scal, this Sixteenth day of April, in the
year of our Lord One thousand eight hundred and seventy-three.
Ta
TATOY ATTTTTAATY
JAMES JOHN SHEDLOCK. (L.S.)

page_text: En the Matter of the Letters Patent granted to JAMES JOHN
SHEDLOCK, of No. 1, Ellenboro' Road, Upper Holloway, in the
County of Middlesex, Engineer, for the Invention of "IMPROVE-
MENTS IN APPARATUS FOR THE TREATMENT OF HYDROCARBON GASES
AND VAPOURS FOR ILLUMINATING AND HEATING PURPOSES," bearing
date the 16th day of October 1872.
DISCLAIMER AND MEMORANDUM OF ALTERATION proposed to be
entered and filed by the said James John Shedlock, the above-
named Patentee, to portions of the Specification of the said Letters
Patent, according to the Statutes in that case made and provided.
"
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES JOHN
SHEDLOCK, of No. 1, Ellenboro' Road, Upper Holloway, in the County
of Middlesex aforesaid, Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent, bearing date the 16th day of October 1872, did
+

page_text: grant unto me, the said James John Shedlock, my executors, admini-
strators, and assigns, the sole privilege to make, use, exercise, and vend,
the Invention of "IMPROVEMENTS IN APPARATUS FOR THE TREATMENT OF HYDRO-
CARBON GASES AND VAPOURS FOR ILLUMINATING AND HEATING PURPOSES," within
the United Kingdom of Great Britain and Ireland, the Channel Islands,
and the Isle of Man, during the term of fourteen years then next
ensuing:
And whereas, I, the said James John Shedlock, on the 16th day of
April 1873, within the time prescribed by the said Letters Patent caused
a Specification in writing under my hand and seal to be filed in the Great
Seal Patent Office:
And whereas after the date of the application for the said Letters
Patent, and since the filing of the Specification in pursuance thereof, I
have ascertained and been advised that the description of the said
Invention does not in some places agree with the title thereof, and also
that the claims are drawn in too general terms, and might be construed
to cover matter which was not new and original at the date of the said
application for Letters Patent:
And whereas in order to render the said Specification more definite,
clear, and distinct I propose to make the several alterations, erasures,
and corrections therein as hercin-after contained.
NOW THEREFORE KNOW YE, that I, the said James John Shedlock,
by and with the leave of Her Majesty's Attorney-General, do hereby,
for the reasons aforesaid, and in order more clearly to limit and define
the true nature of the said Invention, and the means of carrying it into
practical effect, make the following alterations and crasures in the said
Specification, that is to say :-
I strike out at line 18, page 4 of the blue book of the said Specifica-
tion printed by Her Majesty's Printer, the words "the construction of,"
aud substitute for them the words "improvements in," so as to make the
introductory words of the description of my Invention contained in my
said Specification read as follows:-
"The object of my Invention is improvements in apparatus for the
treatment of hydrocarbon gases," and at page 8, line 8 of the same
printed Specification I strike out the words "of vessels
first claim, and insert in substitution for them the words
wheruby a
"6
"from the
as herein-

page_text: of
before described
Α
the vessels G, G, H, whereby coal or other," and at
the next line 9 I strike out the word "them," and insert in substitution
for it the words "the vessels," and at the next line, 10, I strike out the
word "therewith," and insert in substitution for it the words "with
the permanent gas," so that the said first claim will read as follows:-
"First. Tho arrangement as herein-before described of the vessels G,
"G, H, whereby coal or other permanent gas under pressure actuates
"the vessels for the purpose of combining atmospheric air with the per-
"manent gas in any desired volume."
I insert at the same page 8, line 11, between the words "of the vessels"
and the words" with the necessary" the letters "G, G, H," and at line 12,
a few more words further on I insert the letter "A" between the words
"contained in a casc," and " charged with liquid," and at the end of the
said second claim after the words atmospheric air I insert the words "as
herein before described," so that the said second claim when amended as
aforesaid will read "The combination of the vessels G, G, H, (with the
" necessary inlet and outlet pipes and valves or cocks) contained in a
case A charged with liquid for the purpose of exhausting or forcing
atmospheric air" as herein-before described.
I strike out at line 14 of the same page 8 the words "the method of"
from the commencement of the third claim, and between the words
saturating" and "gas" I strike out the word "the" in the same line,
and at the next line, 15, between the word "chamber" and "of the
herein-before I insert the words "or chambers," so that the said 3rd
claim when thus amended will read as follows:-
"
"Saturating gas or atmospheric air with hydrocarbon vapour by forcing
"them through a chamber or chambers of the herein-before explained
"construction."
And I strike out at line 17 of the same page 8 the words "substan-
tially and" from the fourth claim, which when thus amended will read
as follows:-
:-
СС
"Fourthly. The combined arrangement of the apparatus for the pur-
poses herein-before described."
And I do hereby declare that the said Specification as amended
by this present Disclaimer and Memorandum of Alteration shall read as
11

page_text: "SPECIFICATION in pursuance of the conditions of the Letters Patent,
"filed by the said James John Shedlock in the Great Scal Patent
"Office on the 10th April 1873.
"TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
"JOHN SHEDLOCK, of 1, Ellenboro' Road, Upper Holloway, in the
"County of Middlesex, Engineer, send greeting.
«
$
"
"
"
John
A
Jobn
A
"WHEREAS Her most Excellent Majesty Queen Victoria, by Her
"Letters Patent, bearing date the Sixteenth day of October, in the ycar
"of our Lord One thousand cight hundred and seventy-two, in the
thirty-sixth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said James Shedlock, Her
special licence that I, the said James Shedlock, my executors,
"administrators, and assigns, or such others as I, the said James John
Shedlock, my executors, 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
" IMPROVEMENTS IN APPARATUS FOR THE TREATMENT OF HYDROCARBON GASES AND
"VAPOURS FOR ILLUMINATING AND HEATING PURPOSES," upon the condition
(amongst others) that I, the said James John Shedlock, 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, I and cause the same to be filed in the Great
"Scal Patent Office within six calendar months next and immediately
"after the date of the said Letters Patent.
"NOW KNOW YE, that I, the said James John Shedlock, have 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:-
<<
"The object of this Invention is improvements in apparatus for the
"treatment of hydrocarbon gases and vapours, whereby combinations of
a permanent gas and atmospheric air, or hydrocarbon vapour and atmos-
pheric air, or it may be a permanent gas, atmospheric air, and hydro-
"carbon vapour are formed, by the combustion of which light and heat
"

page_text: <<
<<
are produced, when one or other of the above combinations of a
"permanent gas, air, and hydrocarbon vapour is consumed at properly
"constructed burners. For these purposes an outer case is provided
charged to the required level with any suitable liquid and fitted with
" inlet and outlet passages communicating from the exterior of the outer
case with the interior of two or more vessels carried by a shaft or shafts
"and supported by bearings fixed in the interior of the outer case. The
"vessels are provided with inlet and outlet passages through which the
८८
<
gas or atmospheric air in passing is regulated, and a steady and equal
"flow of the gas or atmospheric air is maintained. A division is made in
"the case separating the vessels but allowing a free passage for the
liquid below its level. The capacity of these vessels is regulated so that
"the vessels through which a permanent gas is made to pass under pressure
"shall be of about one to five of that through which the atmospheric air
"is drawn, but the capacities may be varied to suit different gases or the
purpose for which they are to be applied. The atmospheric air before
being admitted to the vessels must be freed from any moisture or vapour
"of water which it may contain, and for which purpose it may be
"treated by any known process, such for instance as passing it over or
"through sulphuric acid or lime.
(C
tr
"When a permanent gas cannot be obtained then any suitable con-
"trivance for actuating the vessels can be attached to the shaft or shafts,
" and atmospheric air will be drawn into and carried through the vessels
" to the outlet chambers passages from whence it is forced into a chamber
"in which a number of cylinders placed one in the other are securely
"attached to a plate, which forms the bottom of a reservoir containing a
"suitable hydrocarbon liquid. Holes are made in each cylinder alternating
"on either side of radiating vertical plates placed between each cylinder
" and securely attached to the same plate as the cylinders. Pipes, and
"cocks, or valves regulate the passage of the atmospheric air through the
"whole or any number of the cylinders, whereby the complete or partial
"saturation of the atmospheric air with the hydrocarbon vapour will be
"effected. The smallest cylinder fitted with a series of perforated trays
passes through the reservoir and terminating in the upper part thereof,
" is fitted with valves or cocks for the purpose of regulating the pressure
" of the gases or vapours passing off to the burners. A pipe or pipes
reaching to nearly the bottom of the reservoir are attached to the upper
66
<<
66
part, the openings of which are protected from injury and made sound

page_text: "
"
by means of a collar having an annular recess cut into its upper side
"in which is placed a composition not affected by the hydrocarbon
liquid. A cap provided with an annular projection corresponding with
"the recess in the collar is made to screw on to and form a joint
perfectly sound with the collar.
"
"
"In some cases a cock or valve will answer the same purpose as tho
"collar and cap, and can be fitted in licu thereof. The reservoir is
charged with the hydrocarbon liquid by means of these pipes, and the
"chamber containing the cylinders is supplied with the liquid from the
"reservoir by means of pipes and cocks or valves placed at the required
"levels. The spaces between the cylinders and the perforated trays are
"filled with a material having an absorbent capillary attraction for the
hydrocarbon liquid, whereby the atmospheric air or gas in passing
through the cylinders becomes impregnated with the vapours given off
" from the liquid.
<
"The mixture of permanent gas and atmospheric air may be carried
"direct for consumption to a burner or burners herein-after described, or
"it may be made to pass through the chamber containing the cylinders
"and become impregnated with the hydrocarbon vapour, or the atmo-
spheric air alone can be made by suitable byc-pass valves or cocks to
pass through the chamber for its saturation with hydrocarbon vapour
"and be made afterwards to combine with the permanent gas on its
passage to the burners.
"
$8
«
3
"The mixed gas and atmospheric air can be consumed by any form of
"burner adapted for that purpose, but I prefer a burner of the following
"construction when required to exhibit a powerful light, and also throw
"out great heat. The permanent gas and atmospheric air, or the air
"saturated with the hydrocarbon vapour, or the mixtures of gas, atmo-
"spheric air and hydrocarbon vapour are made to pass through per-'
"forated plates of any non-oxidizable material, and there ignited and
"surrounded by a cap or caps of gauze made from a metallic wire
capable of bearing a high heat without becoming oxidized or corroded,
"and which will become highly luminous when heated to the necessary
degree by the combustion of the mixed gases or vapours.
"
66
"For ordinary illuminating purposes any of the common forms of
"burners can be used, the best results being given by those which can
consume the
gascs at a low pressure.
"

page_text: "And in order that this my Invention may be more fully understood
"and readily carried into effect, I will proceed to describe the Drawings
"hereunto annexed. Similar letters of reference indicating corresponding
«
parts where such parts appear or can be seen at cach of the Figures
"recnactivale
65
Figure 1 is a side elevation; Figure 2, front elevation, partly in
" section; Figure 3, section; Figure 4, plan; and Figure 5, horizontal
"section of chamber containing the cylinders.
"
"The outer case A is filled with liquid to the level B, B, and any
excess of liquid in the case A will run off into the chamber R¹.
"Divisions K, K, are fixed in the case A.
"
"The action of the apparatus is as follows:-When a permanent gas
"enters the inlet pipe D it will pass through the chamber T", and by the
pipe D' and D into the vessel H, which will be made to revolve, carrying
with it the two vessels G, G, which are supplied by the shaft I, I, and to
"which the vessel H is attached. Atmospheric air will be drawn into the
"vessels G, G, through the holes in the box C, fitted with trays L, con-
taining lime, which will absorb any moisture contained in the air, and
by the chamber R¹ through the pipes C₁, C', and C, and C³, and
"discharged from the vessels G, G, through the pipes F, F.
SE
"E
"For heating purposes the permanent gas, after passing through the
"vessel H, will ascend the pipe E, and the atmospheric air will pass by
"the pipes F, F, and combine with the permanent gas in the pipe Q; the
valves 6, 4, and 3, must in this case be closed, and the valves 1, 2, and 5,
"be opened. If it is required to charge the atmospheric air with hydro-
"carbon vapour then the valves 2 and 6 must be closed, and the air will
"be forced down the pipe S into the chamber O, and round the cylin-
"ders o, o, o, through the openings 8, 8, 8, into the smallest cylinder W,
containing the perforated trays X, X, X, X, and through the valve 3 into
"the pipe Q, and thence to the burners, for the purpose of impregnating
"the permanent gas and atmospheric air with hydrocarbon vapour, then
"the valves 1 and 2 are closed, and the valves 6, 5, 4, and 3, are opened,
"and the combined gas and air will be carried by the pipe S through the
"chamber O, and up the smallest cylinder W into the pipe Q.

page_text: I hereby grant my fiat, giving leave to the above-named James John
Shedlock, to file in the Great Seal Patent Office, with the Specification
Oto which the same relates, the above-written Disclaimer & Memdum of
Alteration.