IMPROVEMENTS IN ASPHALTE APPARATIS "
Year: 1882

page_text: LETTERS PATENT to Brierley Denham Healey of Brighouse in the County of
York Civil Engineer for an invention of IMPROVEMENTS IN ASPHALTE
APPARATIS "
"
PROVISIONAL SPECIFICATION left by the said Brierley Denham Healey
at the Office of the Commissioners of Patents on the 9th August 1882.
BRIERLEY DENHAM HEALEY of Brighouse in the County of York, Civil
Engineer. IMPROVEMENTS IN ASPHALTE APPARATUS.
This Invention has reference to pans or apparatus used for melting pitch, and
producing hot bituminous compounds of tar and pitch or other similar products,
and is an improvement on the apparatus described in the Specifications of my
Patents No. 2733. A.D. 1876 and No. 4297. A.D. 1881.
According to my present Invention the pan and casing are constructed as
truncated cones, the taper of the sides being about one in eight, which insures each
ring of the lining bricks being self supporting and provides for the pans heating
more quickly than with vertical sides of cylindrical pans.
In carrying my present improvements into effect, the pan being of circular form
has a Low Moor Bowling or mild steel bottom flanged for jointing to the side
plates In the bottom I cut three outlet holes at an angle of 120 degrees from
each other using one and covering the others by blank flanges. When the pan has
worked until the bottom is burnt in line with the outlet in use, it is then turned so
as to bring another outlet into proper position and so again until the bottom has
been turned twice.
The outlet elbow is fixed under the pan bottom and extends to the casing plate
at the flue end where it is jointed to the Cock by which arrangement the pan may
be emptied quite clear without tipping the apparatus. To assist in keeping the
bottom of pan free from sediment, as well as to help forward the melting, I fix
stirrers to a vertical shaft, in the centre of the pan the shaft carries bevil gearing
above the pan cover and is actuated by one or more drivers of suitable
proportions, the latter being fixed on horizontal shafts leading from the extremity
of the pan.

page_text: The covering sheets of the pan may be in three or four parts according to the
size of the apparatus, each part having a charging hole and overflow spout. The
stiffening angles of covering sheets are put on the upper side, and bent to suit the
overflow spout when the latter is formed of part of the covering sheet, in which
case the part forming the overflow is canted downwards-Where separate overflows
are used I make them of cast iron and fix one opposite each charging hole, still
putting the stiffening angles of covering sheets on the upper side and cutting them
away opposite the overflows.
The charging hole lids and rings are of cast iron with their hinges cast on, the
rings being of trough section with the inner flange higher than the outer flange to
prevent the rain water from dripping into the pan, and the lids being of mushroom
form inverted with their edges dipping into the troughed part of the rings, and
having stops cast on tliem to prevent them falling too far back when opened. The
method of collecting and decomposing the pungent gases is the same as described
in my patent No. 4297 A.D. 1881.
The shaft sockets are now entirely of cast iron bolted or rivetted to the casing
at the back end of the apparatus. The axle is made straight and is fixed over the
springs, leaving just sufficient space between its upper side and the bottom of
casing and the ends of the springs work in wrought iron shoes which are secured
to the bottom of the casing. A safety wheel or skid is attached to the casing
bottom at the back end of the apparatus to save the trouble of packing each time
the apparatus is removed and for safety during the removal.
The covering sheets are fixed to the pan top. and the pan seat to the casing seat,
with tap bolts, or gibs with tee heads in suitable slots and the distances and
number of these bolts are arranged to suit the rotative changes of the pan with
regard to the outlets. The fireplace dour is in one casting hinged on its lower edge
and when open it forms a cill about level with the upper surface of the fire The
firegrate sides and back are of cast iron with an inner flange for supporting tho
firebrick lining and suitable pockets in which rest the firebar bearers.
The improved charging hole lids and rings, shaft sockets safety wheel or skid,
overflow spouts, fireplace door, firegrate sides and back and plain axle may be
applied to apparatus as described in my said previous patents, with great economy
in first cost, and where the whole of my present improvements are carried out, the
saving in first cost will be not less than twenty per cent as compared with apparatus
previously made.
The casing is lined throughout with split firebricks made to suit the conical
shape of sides and there is no risk of the contents taking fire from overheating of
the flue end of casing as hitherto during the drawing off into buckets.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Brierley Denham Healey in the Great Seal Patent Office on
the 6th January 1883.
BRIERLEY DENHAM HEALEY of Brighouse in the County of York, Civil
Engineer. IMPROVEMENTS IN ASPHALTE APPARATUS
This Invention has reference to pans or apparatus used for melting pitch and
producing hot bituminous compounds of tar and pitch or other similar products
and is an improvement on the apparatus described in the specification of my
patents No. 2733, A D 1876 and No. 4297 AD 1881 According to my present
Invention the pan and casing are constructed as truncated cones, the taper of the
sides being about one in eight which insures each ring of the lining bricks being
self supporting and provides for the pans heating more quickly than with vertical
sides of cylindrical pans In carrying my present improvements into effect the
pan being of circular form has a Low Moor Bowling or mild steel bottom flanged
for jointing to the side plates In the bottom I cut three outlet holes at an angle
of 120 degrees from each other using one and covering the others by blank flanges.
When the pan has worked until the bottom is burnt in line with the outlet in use, it
is then turned so as to bring another outlet into proper position and so again until
the bottom has been turned twice. The outlet elbow is fixed under the pan
bottom and extends to the casing plate at the flue end where it is jointed to the
Cock by which arrangement the pan may be emptied quite clear without tipping
the apparatus To assist in keeping the bottom of pan free from sediment as well
as to help forward the melting I fix stirrers to a vertical shaft in the centre of the
pan the shaft carries bevil gearing above the pan cover and is actuated by one or
more drivers of suitable proportions the latter being fixed on horizontal shafts
leading from the extremity of the pan The covering sheets of the pan may be in
three or four parts according to the size of the apparatus each part having a
charging hole and overflow spout The stiffening angles of covering sheets are put
on the upper side and bent to suit the overflow spout when the latter is formed of
part of the covering sheet in which case the part forming the overflow is canted
downwards Where separate overflows are used I make them of cast iron and fix
one opposite each charging hole still putting the stiffening angles of covering sheets
on the upper side and cutting them away opposite the overflows. The charging
hole lids and rings are of cast iron with their hinges cast on the rings being of
trough section with the inner flange higher than the outer flange to prevent the
rain water from dripping into the pan the lids being of mushroom form inverted
with their edges dipping into the troughed part of the rings and having stops cast
on them to prevent them falling too far back when opened The method of
collecting and decomposing the pungent gases is the same as described in my
patent No 4297 AD 1881 The gauze boxes are provided with self acting floats
which prevent the bituminous mixture getting into the pipes when the contents of
pan boils over
The gas pipes are turned into the sides of front flue instead of passing
down to the dome casting of firegrate The gauze frames are each made of one
piece of sheet iron brass or copper folded over at the front edge The shaft sockets
are now entirely of cast iron bolted or rivetted to the casing at the back end of the
apparatus The axle is made straight and is fixed over the springs leaving just
sufficient space between its upper side and the bottom of casing and the ends of
the springs work in wrought iron shoes which are secured to the bottom of the
casing A safety wheel or skid is attached to the casing bottom at the back end of
the apparatus to save the trouble of packing each time the apparatus is removed,

page_text: and for safety during the removal The covering sheets are fixed to the pan top
and the pan scat to the casing seat with tap bolts or gibs with tee heads in
suitable slots and the distances and number of these bolts are arranged to suit the
rotative changes of the pan with regard to the outlet The fireplace door is in one
casting hinged on its lower edge and when open it forms a cill about level with
the upper surface of the fire The firegrate sides and back are of cast iron with
an inner flange for supporting the firebrick lining and suitable pockets in which rest
the firebar bearers The improved charging hole lids and rings shaft sockets
safety wheels or skids overflow spouts fireplace door firegrate sides and back and
plain axle may be applied to apparatus as described in my said previous patents
with great economy in first cost and where the whole of my present improvements
are carried out the saving in first cost will be not less than twenty per cent as
compared with apparatus previously made The casing is lined throughout with
split firebricks made to suit the conical shape of sides and there is no risk of
the contents taking fire from overheating of the flue end of casing as hitherto
during the drawing off into buckets In applying the safety wheels to boilers
of the shape shewn and described in my said previous patents I prefer to put
two wheels to a leading axle the latter being attached to a pivot plate under
the boiler casing thus forming a bogie in which case the ordinary axle is put as
near as practicable to the back end of firegrate The ordinary wheels have
springs in my said previous patents but the safety wheels have no springs In
the apparatus herein described the firegrates of the small boilers as well as the
large are lined with firebricks and have fireclay saddles, and the small sizes have
also springs to the wheels And in order that this my present Invention may be
fully understood I will now describe it with reference to the sheet of Drawings
appended hereto Figure 1 is a longitudinal sectional elevation of the improved
form of apparatus figure 2 is a half transverse section figure 3 is a half elevation
of firing side figure 4 is a plan of gas box figure 5 is a plan of gauze frame
expanded figure 6 is a plan of charging hole lid and ring and figure 7 is a section of
improved joint for pan covers Similar letters refer to similar parts throughout the
several views The inner or boiling pan A and the outer casing B Figs 1 and 2 are
in the form of truncated cones The casing B is lined with firebricks both on its sides
and bottom except where the firebars are fixed The fireplace C is covered over with
curved firebrick covers and the flue with an iron or steel plate D curved to the same
radius as the firebricks Beyond this a flat plate E is fixed with its further end resting
on the firebrick lining of the outer casing The plate is open at the sides to allow
the heated gases or flame to spread out in each direction and pass round the pan
on their way to the flue or chimney F it also serves to protect the outlet branch G
and the side of casing from being burnt away so rapidly The pan A is provided
with a dished bottom H rivetted into the shell and has an outlet pipe G terminating
in a plug valve bolted to it It is also provided with a footstep for carrying the
vertical shaft J which has one or more stirrers K fixed to it The upper end of
the said shaft runs in a bearing secured to the cover L and is driven by a pair of
bevil wheels from the shaft M which is provided with a handle N Charging
holes P are formed on the pan covering sheets L and are furnished with rings and
lids with hinges cast on them The rings are of trough section with the inner
flange higher than the outer one to prevent rain water getting into the pan, and
each lid has a flange which dips into the trough as shewn Opposite each charging
hole P an overflow spout is formed the sides of which are made of angle iron shaped
to join and stiffen the top plates or covers of pan Two cast iron boxes S Figs 1
and 3 are bolted to the pan covers each of which contains a cork float T shewn on
figure 3 suspended from a small rod U by which it is guided The thin metallic
sheet W fig 5 when folded constitutes a frame to carry a layer of wire gauze
interposed between the pipe X and the boiler so that should the gas take fire in
the pipes it will not ignite the contents of the boiler The lower part of each box
is separated from the upper part by a sliding gauze frame The gas pipes are led
down on each side of the flue F and are inserted into the flue below the double

page_text: acting damper y. This damper is furnished with a notched bar and is so arranged
that a portion of the heated gases or flame may be turned direct up the flue if
desired without passing under and around the inner pan The fireplace door Q
Figs 1 and 2 is carried on horizontal hinges and is provided with stops so that
when the door is open it forms a cill. Under the back end of outer casing a
crutch Z is bolted on for the pan to rest on when in use The pan A and covers L
are held in position by twelve (or other multiple of three) bolts pitched at equal
distances so that when one part of the pan bottom is wearing thin the bolts may
be taken out and the pan itself turned round a third of a revolution or 120 degrees
thus bringing the bolt holes true with each other again The pan bottom has
three holes divided the same way two of them being closed with blank flanges so
that the pipe G can be coupled up afresh to the pan A after the latter has been
turned. By this means wear can be equally distributed all over the pan and the
apparatus may be worked longer before it requires to be repaired The whole
apparatus may be mounted on travelling wheels and springs and have shaft
sockets R rivetted to it for drawing it by horse power The wheels are built up of
wrought iron somewhat similar to ordinary railway wagon wheels. The crutch Z is
sometimes combined or replaced by a roller suitably attached to the apparatus And
to the large sized apparatus described in my said previous patents I fix a bogie with
two wheels under the front end putting the ordinary wheels and axle nearer than
usual to the firebox The firegrate sides back and front are of cast iron with
flanges for firebrick linings and are applicable to apparatus of the shape described
in my said previous patents Having thus particularly described and ascertained
the nature of my said Invention and the best means I am acquainted with of
performing the same I wish it to be understood that I do not restrict myself to
the precise details shewn on the accompanying Drawings or described herein with
reference to such Drawings or with reference to the modification and adaptation
to existing boilers but what I believe to be novel and original and claim as my
Invention is the herein described Invention of "Improvements in Asphalte
Apparatus" in regard to such Invention comprising First In an apparatus for
melting and mixing bituminous compounds and like substances the combination
of a pan a surrounding brick lined case and one or more stirrers arranged within
and near the lower part of said pan so as to act both to mix the contents and to
keep the bottom clear of deposit of the material under treatment substantially as
herein shewn and described Second The various improved details herein described
as applicable to pans made of the form shewn and described in my said previous
patents as well as to the new form of apparatus herein shewn and described In
witness whereof I the said Brierley Denham Healey have hereunto set my hand
and seal this thirtieth day of November 1882
UWAT DV
B. D. HI
WAT DV
1
wwwww