Improvements relating to Locomotive Boilers.
Year: 1896

page_text: Date of Application, 29th Sept., 1896
1002
1007
ISIONAL
Improvements relating to Locomotive Boilers.
I, JOHN WHITTLE, of 27 Frampton Place, Boston, Lincolnshire, Gentleman, do
bereby declare the nature of this invention to be as follows:-
This invention has for object, improving the combustion and the heat giving
properties of fuel used in Locomotive types of Engines.
The invention is two fold. First, in the furnace door and its appliances,
Secondly, in the exhaust pipe outlet.
The furnace door is preferably of oval form and hinged at one of its long ends
and provided with a sweep claw shape of catch with a projecting handle to enable
the firemen to keep clear of the over heated parts.
The door has a half oval opening with a pivoted transverse roller in which is
e slot for the arm of a deflector plate to be fitted and in which the arm is adjustable
and fixable by a ratchet and pawl.
The roller forms the pivot on which the deflector plate can be rocked or set to
suit the state of the fire and for the admission of air in the required direction, the
deflector being so arranged that the opening in the door can be closed or be so
hung that feeding can take place without exposing the fire, thus the green fuel can
be heated before distribution and the smoke consumed while passing over the fire
whereby intense gaseous heat is evolved in the firebox and tubes, with little other
than faint blue vapour escaning into the chimney.
My exhaust nozzle is provided with a number of comparatively fine holes
arranged radially and at the proper angles for diverging the blast into fine spread-
ing streams over the full internal capacity of the smoke stack for suppressing or
deadening the sound and for extinguishing sparks should any be drawn through
the tubes by the force of the blast, or while the fire is being trimmed during the
running of the Engine.
The nozzle is of concave-convex shape and is mounted on the top of the blast
pipe, and for the purpose of adjustment as to height, I provide the neck with a
screw thread ferrule to engage a screw thread on the lower branch. The blast
ripe is conical and permits of the escaping steam to spread over the inner surface
of the nozzle for equal distribution to the holes.
Dithin 90th day of September 1896
H.
GARDNER,
166 Fleet Street, London, Patent Agent,
Agent for the said John Whittle.
I, JOHN WHITTLE, of 27 Frampton Place, Boston, Lincolnshire, Gentleman, do
hereby declare the nature of this invention and in what manner the same is to be
[Price 8d.]

page_text: performed to be particularly described and ascertained in and by the following
statement:-
This invention has for its object, improving the combustion and the heat giving
properties of fuel used in Locomotive types of Engines.
The invention is two fold. First in the furnace door and its appliances,
Secondly in the exhaust pipe outlet.
My invention will be clearly understood by reference to the annexed drawings.
Figure 1 a front elevation."
Figure 2 partial section.
Figure plan of the furnace door part of my invention.
Figure 4 section.
.
Figure 5 half plan view, and
Figure 6 elevation of the blast pipe nozzle part of my invention.
Referring to the first part shown at Figures 1, 2, and 3, A, is the frame of a
furnace door of a Locomotive type of firebox, this door is on a hinge B and is of
somewhat oval form with an oval opening C, across the longer horizontal portion
of which is hung a frame D by cars or socket plates E, E, to enable said frame to
be set by means of its handle F at any desired angle and he held temporarily by
a pawl G engaging one of the teeth of a rack H projecting from a deflector plate I
which for the purpose of my invention can be slid up or down in the frame D,
said plate I being arranged to be set at the desired angle when adjusted by hand.
The plate I not less than inch thick can be raised and lowered by its handle K.
to deflect the inflowing air on the fuel of the furnace to maintain an incandescent
heat with no escape of smoke from the fire, the admixture of the air (heated) with
the gases arising from the fuel being so intimately associated that perfect com
bustion takes place with a full development of heat within the firebox and while
passing through the tubes to the smoke box.
My combined furnace door and deflector plate is of importance not only for the
deflection of air at the desired part of and on the fuel but by canting the deflector
plate, the firing can be followed without opening the fire door nor is it necessary:
to open the door during the raking operation with fireirons or raking tool.
In order that my affixable and adjustable deflector plate may be as wide as
possible I dispense with the usual horizontal catch, and I arrange a vertically
acting catch L with a scroll handle M to enable the release of the nose of the catch
from the catch plate N to be effected by hand instead of the catch being raised by
chain as at present.
The top opening between the door and the deflector plate is of importance
because it enables a fresh supply of oxygen to enter at the upper part of the firebox
and this by commingling with the uprising highly heated gases cause the heat to
be raised to the highest possible temperature as they travel through the tubes and
this heat is transmitted to the water surrounding the tubes whereby great economy
is obtained besides which the fire is kept more steady and is not affected as at
present by the inrush of air through the ashpan under bottom of firebox.
The second part of my said invention is for Locomotive Boilers. The nozzle P
is shown at Figures 4, 5, and 6 of the drawings and is made with a number of 4
comparatively finc holes which can be varied in size and arranged concentrically
as at Figure 5 and stepwise at the proper angles as at Figure 4 for diverging the
blast into fine spreading streams over the full internal capacity of the smoke
stack Q as at Figure 6 for suppressing or deadening the sound and for extinguish-
ing sparks should any be drawn through the fire tubes into smoke box by the
force of the blast or while the fire is being trimmed during the running of the
Engine.
The nozzle P concavo-convex shape as represented at Figure 4 is mounted on
the top of the blast pipe R, and for the purpose of adjustment as to height I provide
the neck with a screw thread ferrule S to engage a screw thread on the lower
branch, or it may be into ring grooves. The nozzle is fitted in a conical socket T
5
5

page_text: which permits of the escaping steam to spread over the inner surface of the nozzle
for equal distribution to and through the holes.
Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed I declare that what
I claim is:
1. The herein before described and illustrated improvement in or relating to
Boilers of Locomotive type of Engines i.e. a furnace door of the kind mentioned
with a deflecting plate suspended or hinged to swing in the opening thereof, said
plate being adjustable as to height and to angle in the manner and for the purposes
set forth.
2. The hereinbefore described and illustrated improvement in or relating to
Boilers of the Locomotive type of Engine i.e. a blast pipe nozzle provided with sets
of holes arranged concentrically and at an angle in a concavo-convex shell on a
cone shaped head of a blast pipe which is also adjustable as and by the means set
forth for the purposes explained.
3. The improvement in or connected with Boilers of the Locomotive type of
Engine, the combination of the first and the second part as herein before set forth
and shown i.e. the furnace door with its deflecting plate and the concentrically
holed nozzle of concavo-convex shape and adjustable on the blast pipe in the smoke
stack, all as and for the purposes described.
The 10th day
JOUT
H. GARDNER,
166 Fleet Street, London, Patent Agent,
Agent for the said John Whittle.
H.
GARDNER,
166 Fleet Street, London, Patent Agent,
Agent for the said John Whittle.