IMPROVEMENTS IN THE FURNACES OR FIRE BOXES OF LOCOMOTIVE BOILERS; TO ADAPT THEM FOR THE CONSUMPTION OF COAL AND THE SMOKE ARISING THEREFROM
Year: 1857

page_text: Manchester, Locomo
преситеност
The LancasTO
Railway Company, for the Invention of "IMPROVEMENTS IN THE FURNACES
OR FIRE BOXES OF LOCOMOTIVE BOILERS; TO ADAPT THEM FOR THE CONSUMPTION
OF COAL AND THE SMOKE ARISING THEREFROM."
Sealed the 23rd February 1858, and dated the 14th September 1857.
PROVISIONAL SPECIFICATION left by the said William Jenkins at the
Office of the Commissioners of Patents, with his Petition, on the
14th September 1857.
I, WILLIAM JENKINS, of Miles Platting, near the City of Manchester,
Locomotive Superintendent to the Lancashire and Yorkshire Railway Com-
'IMPROVEMENTS
pany, do hereby declare the nature of the said Invention for
IN THE FURNACES OR FIRE BOXES OF LOCOMOTIVE BOILERS, TO ADAPT THEM FOR THE
CONSUMPTION OF COAL AND THE SMOKE ARISING THEREFROM," to be as follows:-
The object of my Invention is to adapt the locomotive fire box for the
consumption of coal and the smoke arising therefrom, the improvements being
applicable to locomotives of the ordinary construction and now in use.
My Invention consists in placing a series of tubes (answering as stays)
in the fire box, on the tube-plate side, so as to admit air to the fuel above the
fire bars; and it also consists in fixing a partition of iron or other suitable
material across the fire box, to prevent the air admitted through the "air
*Drive 811

page_text: tubes" from passing directly to the boiler tubes, this partition acting to cause
the air admitted to mix with the combustible gases and cause them to ignite.
My Invention also consists in using, in combination with the "air tubes" in
the tube-plate side of the fire box, other "air tubes," placed in other convenient
parts of the fire box, together with arrangements in the furnace door for the
admission of air. These air tubes in each case have arrangements provided by
which the admission of air through them may be modified or entirely shut off.
My Invention further consists in the use of a jet of steam in the smoke box
when the locomotive is standing, to create a draught through the "air tubes"
when required.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Jenkins in the Great Seal Patent Office on the
8th March 1858.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
JENKINS, of Miles Platting, near the City of Manchester, Locomotive Super-
intendent to the Lancashire and Yorkshire Railway Company, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourteenth day of September, in the year of our
Lord, Eighteen hundred and fifty-seven, in the twenty-first year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said William Jenkins, Her especial license that I, the said William Jenkins,
my executors, administrators, and assigns, or such others as I, the said William
Jenkins, 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 THE FURNACES
OR FIRE BOXES OF LOCOMOTIVE BOILERS, TO ADAPT THEM FOR THE CONSUMPTION
or COAL AND THE SMOKE ARISING THEREFROM," upon the condition (amongst
others) that I, the said William Jenkins, by an instrument in writing under
my hand and seal, 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 William Jenkins, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-

page_text: formed, to be particularly described and ascertamed in and by the tonowing
statement (that is to say) :-
The object of my Invention is to adapt the locomotive fire box for the
consumption of coal and the smoke arising therefrom, the improvements being
applicable to locomotives of the ordinary construction and now in use, and at a
small cost.
My Invention consists of the following arrangements, that is, in placing a
series of tubes (answering as stays) in the fire box, on the tube-plate side, so
as to admit air to the fuel above the fire bars; the outside ends of these tubes
having a valve arrangement to regulate the quantity of air to be passed
through them, or entirely shut it off; and in combining with these arrange-
ments a partition of iron or other suitable material passing across the fire box,
the object of which is to prevent the air admitted through the tube stays from
passing directly to the flue tubes of the boiler, this partition acting to cause
the air admitted to mix with the combustible gases and ignite them, thus con-
suming the smoke.
And my Invention further consists in combining with the arrangements
mentioned tube stays, placed at the front and other convenient parts of the fire
box; and also arrangements in the furnace doors for the admission of air to
the fire box above the fuel, both the air-tube stays and furnac doors being
provided with valves or slides to regulate or shut off the supply of air.
And my Invention further consists in using, in combination with the above
arrangements of locomotive fire box or furnace, a jet of steam in the smoke
box or chimney when the locomotive is standing, to create or increase the
draught through the air tubes and fire bars when required.
The accompanying Sheet of Drawing exhibits my improvements applied to
an ordinary locomotive boiler.
Fig. 1 is a side elevation of a boiler, parts of the case being supposed
broken away to shew the fire box and blast pipe in section; Fig. 2, a view of
the fire box end of the locomotive; Fig. 3, a plan view of the fire box
in section; and Fig. 4, a transverse section of the boiler, looking at the back
of the fire box from the smoke box end. The series of tube stays through the
water space on the flue tube-plate side of the fire box (b) are marked a,
the number and arrangement of which is seen best in Fig. 4. A plate (c) is
arranged at the outside of the fire-box (b) so as to slide in grooves formed by
ledges (c) fixed to the fire box. This plate (c) is perforated with as many
holes as there are tube stays (a), which holes are so placed that when the
plate (c) is in one position they will coincide with the stay tubes (a). but when
moved to one side the spaces between the holes in the plate (c) will partly or

page_text: wholly cover the ends of the tube stays (a), according to the extent of side
movement given to it, as will be readily understood. To the sliding plate (c)
one end of a rod (d) is jointed, the other end being jointed with an arm (e)
on the lower end of a vertical shaft (f) carried in bearings secured to the side
of the fire box; the upper end of the shaft (f) having also an arm upon it, to
which a rod (g) is jointed, forming a handle, by which the fireman can give
motion to the slide plate (c) to regulate the draught. The partition (h) across
the fire box, as shewn in Fig. 1, is supposed to be of iron, and is perforated
with a number of holes (), as shewn, the purpose of which is to distribute the
air admitted through the tube stays (a) in numerous jets, so as to ensure the
commingling of the air and combustible gases. This partition or deflector (h)
is screwed to the tube plate (i), and rests at the ends on flanges secured to the
sides of the fire box (b).
Fig. 5 and 6 are detached sectional views of part of a fire box (b), shewing
the application and mode of securing distributors or deflectors (h) formed of
fire-brick material. Fig. 6 shews a deflector or partition (h), similar to that
represented in Fig. 1, but made of fire-brick material; that shewn by Fig. 5
is of different shape (it may be made of iron) and forms a chamber into
which the air from the tube stays (a) first enters, and from which it passes
through the perforations (k), which distribute it in jets. In this arrangement
the fuel is prevented from entering the air-tube stays (a). Air-tubes stays (1)
are placed in front of the fire box (b) as shewn in Fig. 2, and the furnace
door (m) has also openings through which air can be admitted. The door is
made double, and the inner plate is perforated by numerous small holes, so as
to spread and distribute the air; this is seen best in Fig. 3. Both the air-
tubes stays (!) in front of the fire box, and the openings in the furnace door
(m) have slides, on the same principle as that (c) described for the air-tube
stays (a) at the back of the fire box, for regulating and stopping the passage
of air, being the slide plate for the air-tube stays (1), and (m²) the slide for
the furnace door (m). The steam to give the draft when the engine is
standing is taken from a tap (n) in the boiler, convenient to the hand of the
fireman, and conveyed from this tap by a pipe (n') to the chimney of the
locomotive, the end of the pipe (n) entering at the junction of the two
exhaust pipes, and opposite the centre of the blast orifice (p).
I have now particularly described the nature of my Invention, and the
manner of carrying the same into effect, and wish it to be understood that
I claim as my Invention,-
Firstly, a series of air-tube stays (a) placed on the flue tube plate (i) side
of the fire box of locomotive boilers, provided with a valve or arrangement (c)

page_text: for regulating or stopping the passage of air through them, combined with a
partition or distributer (h) placed across the fire box (b), substantially as
herein-before described.
Secondly, I claim the use of air-tube stays (1) in front of the fire box (b),
and arrangements in the furnace door (m) for the admission of air, both being
provided with valves or arrangements (1¹ and m¹) for regulating or stopping
the passage of air, as herein-before described, in combination with the
arrangements referred to in my first claim.
Thirdly, and lastly, I claim the use of a steam jet in the chimney of
locomotives, to maintain a draft in the fire box or furnace when the engine is
standing, either in combination with the arrangements referred to in my first
or second claim.
In witness whereof, I, the said William Jenkins, have hereunto set my
hand and seal, this Sixth day of March, in the year of our Lord One
thousand eight hundred and fifty-eight.
W. JENKINS. (L.S.)