IMPROVEMENTS IN STEAM BOILERS
Year: 1883

page_text: LETTERS PATENT to Sydney Pitt of Sutton in the County of Surrey for an
Invention of "IMPROVEMENTS IN STEAM BOILERS communicated to him
"
from abroad by Louis Schutte of Philadelphia and State of Pennsylvania
United States of America
PROVISIONAL SPECIFICATION left by the said Sydney Pitt at the Office.
of the Commissioners of Patents on the 30th April 1883.
"
SYDNEY PITT of Sutton in the County of Surrey.-"IMPROVEMENTS IN STEAM
BOILERS [communicated to him from abroad by Louis Schutte of Philadelphia
and State of Pennsylvania United States of America]
This invention relates to improvements in the construction of steam boilers in
the combination of a superheater with the boiler to ensure dry steam and an
improved method of securing non-conducting material to the casing enclosing the
boiler to prevent radiation.
These improvements may in whole or part be applied to any kind of boiler but
they are particularly applicable to the class of boilers known as sectional water
tube boilers of which this invention as illustrated in the annexed Drawing is a type.
Figure 1 shews a sectional side elevation of a boiler and superheater attached.
Figure 2 an inside front view of one of the plates enclosing the boiler.
Figure 3 a section through the plate and covering.
Figure 4 an enlarged section and details of pipe connections and removeable
cover.
Referring to Figure 1 A represents the boiler proper consisting of a series of
inclined tubes B furnished at the ends with caps or fittings C screwed thereon the
tubes being arranged in vertical series with the caps or fittings of each end of a
series connected by short tubes D of reduced diameter threaded in reverse direc-
tions at their opposite ends as shewn in Figure 4. The lowermost connecting
tube D at the rear end of the section or series connects with a inud drum E whilo
the upper most connecting tube at the forward end communicates with the interior
of a manifold F which again connects to a drum or series of drums H the rear end
or ends of which are again connected to the mud drum by a pipe or a series of
down pipes I. This forms the circuit of the generator the hot water rising up from
the mud drum through the small vertical necks up the incline pipes and the small
vertical pipes in front through the manifold F into the drum or drums H and from

page_text: -
the back end of which returns through the vertical down pipes into the mud
drum E. The drum H connects at its upper rear end with a steam drum K from
which the steam is taken and conveyed to the engine or machine where it is used
either direct or first passing through a superheater.
The superheater is shown here in the inclined tubes or series of tubes S and T
with the connecting tube u to the drum K and the final discharge pipe v. connecting
to the outlet M.
B
When the superheater is in operation the valves N. P and Q are closed and
valve open and the steam passes from the drum K in the direction of the
arrows down pipe u through the superheater S. T up through the pipo v to the
outlet M.
If the superheater is not in operation either permanently or temporarily it can
be made to act as an additional generative section in the following manner.
In this case the valves O and P are closed and the valves N and Q are open and
the outlet on valve Q is connected with the interior of mud drum by a pipe W.
In this caso the circulation will be from the mud drum through pipe W into T
and S in the direction of the dotted arrows y up the pipe u into the steam drum
and from there to the exit M together with the steam supplied by the rest of
the generator while water which has been carried with it may descend from the
back end through down pipes. I into the mud drum again to repeat the circuit.
The object of the valve P is for the emptying of the superheater water or observing
the quality and dryness of the steam. It will be seen that in this way by the
corresponding opening and closing of the valves N. O. and Q the superheater S. T
can be made to act as a superheater or as an additional part to the generator.
It is desirable that the lowermost tube B of each generator section should be
fitted with removable covers as also that access should be had to the interior of the
small upright.connections for the purpose of having a means of removing obstruc-
tion to circulation should such occur either from incrustation or lodgment of pieces.
These covers for the end of tubes and small upright connections are illustrated in
the enlarged section shown in Figure 4. The cover to the lower pipe B is shown
here in the valve seated-plate Ž which is held down by a screw which passes
through a nut or bar which rests in a pocket and against proper projections cast
thereon. The centre of this valve-seated plate Z is not in line with the centre of
the tube but lower down the object being to allow a scraper to pass on the lower
surface of the tubo through the smallest possible opening and thereby reduce the
required size of cover Z the pressure thereon and consequently have it removed
replaced and kept tight with greater facility. A plug R is also provided opposite
the end of the small upright connections to allow of the passage of a rod scraper or
drill for the removal of obstructions. The front and back plates are uniformn
consisting of a flat plate with a projecting rib running around on each side at some
little distance from the edge and in this way furnish a perfectly symmetrical plate.
The two small packings 1 and 2 are on one side only by reversing this side
alternately either towards the outside or inside of the boiler a perfectly closed
front may be built up with plates of the same pattern and overlapping every, way.
The packing pieces 1 and 2 may also be loose or cast on to the column. The non
conducting material covering will find support in the space enclosed by these ribs
and is held on in place by star formed flat pieces fastened on to the plates at a
suitable distance so as to allow the material to fully enclose and cover them. It is
preferred not to cast these pieces on to the plate but to attach them separately for
which one rivet or bolt each will be sufficient. These pieces need not be in the
form shown but may be simply flat bars extending partly or fully from rib to rib
with spacing pieces between them and the plate for the purpose of securing the
covering.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Sydney Pitt in the Great Seal Patent Office on the 30th October
1883.
"
SYDNEY PITT of Sutton in the County of Surrey "IMPROVEMENTS IN STEAM
BOILERS A communication to me from abroad by Louis Schutte of Philadelphin
and State of Pennsylvania United States of America
This invention relates to improvements in the construction of steam boilers in
the combination of a superheater with the boiler to insure dry steam and an
improved method of securing non-conducting material to the casing enclosing the
boiler to prevent radiation.
These improvements may in whole or part be applied to any kind of boiler but
they are particularly applicable to the class of boilers known as sectional water
'tube boilers of which this invention as illustrated in the annexed drawing is
a type
Figure 1 shows a sectional side elevation of a boiler and superheater attached.
Figure 2 an inside front view of one of the plates enclosing the boiler. Figure 3 n
section through the plate and covering. Figure 4 an enlarged section and details
of pipe connections and removable cover.
Referring to Figure 1-A represents the boiler proper consisting of a series of
inclined tubes B furnished at the ends with caps or fittings C screwed thereon the
tubes being arranged in vertical series with the caps or fittings of each end of a
series connected by short tubes D of reduced diameter threaded in reverse directions
at their opposite ends as shown in Figure 4. The lowermost connecting tube D at
the rear end of the section or series connects with a mud drum E while the upper-
most connecting tube at the forward end communicates with the interior of a
manifold F which again connects to a drum or series of drums H the rear end or
ends of which are again connected to the mud-drum by a pipo or a series of down
pipes L. This forms the circuit of the generator, the hot water rising up from the
mud-drum through the small vertical necks up the inclined pipes and the small
vertical pipes in front, through the manifold F into the drum or drums H and
from the back end of which returns through the vertical down pipes into the mud-
drum E. The drum H connects at its upper rear end with a steam drum K from
which the steam is taken and conveyed to the engine or machine where it is used
either direct or first passing through a superheater.
The superbeater is shown here in the inclined tubes or series of tubes S and T
with the connecting tube u to the drum K and the final discharge pipe v
connecting to the outlet M.
When the superheater is in operation the valves N. P and Q are closed and
valve open and the steam passes from the drum K in the direction of the
arrows down pipe u through the superheater ST up through the pipe v to the
outlet M.
If the superheater is not in operation either permanently or temporarily it can
be made to act as an additional generative section in the following manner.
In this case the valves O and P are closed and the valves N and Q are open and
the outlet on valve Q is connected with the interior of mud-drum by a pipe W.
In this case the circulation will be from the mud-drum through' pipe W into T
and S in the direction of the dotted arrows y up the pipe u into the steam drum
and from there to the exit M. together with the steam supplied by the rest of the
generator while water which has been carried with it may descend from the back
end through down pipes I into the mud-drum again to repeat the circuit. The
object of the valve P is for the emptying of the superheater water, or observing
the quality and dryness of the steam. It will be seen that in this way by
the corresponding opening and closing of the valvos N. O and Q the super-
heater S, T, can be made to act as a superbeater or as an additional part to the
generator.

page_text: It is desirable that the lower most tube B of each generator section should be
fitted with removable covers as also that access should be had to the interior of
the small upright connections for the purpose of having a means of removing
obstruction to circulation should such occur either from incrustation or lodgment
of pieces, these covers for the end of tubes and small upright connections are
illustrated in the enlarged section shown in Figure 4. The cover to the lower
pipe B is shown here in the valve sented plate Z which is held down by a screw
which passes through a nut or bar which rests in a pocket and against proper
projections cast thereon-the centre of this valve seated plate Z is not in line with
the centre of the tube but lower down, the object being to allow a scraper to pass
on the lower surface of the tube through the smallest possible opening and thereby
reduce the required size of cover Z the pressure thereon and consequently have it
removed replaced and kept tight with greater facility. A plug R is also provided
opposite the end of the small upright connections to allow of the passage of a rod,
scraper or drill for the removal of obstructions. The front and back plates are
uniform consisting of a flat plate with a projecting rib running around on each
side at some little distance from the edge and in this way furnish a perfectly
symmetrical plate. The two small packings 1 and 2 are on one side only, by
reversing this side alternately either towards the outside or inside of the boiler a
perfectly closed front may be built up with plates of the same pattern and over-
lapping every way. The packing pieces 1 and 2 may also be loose or cast on to
the column. The non-conducting material covering will find support in the space
enclosed by these ribs and is held on in place by star formed fint pieces fastened
on to the plates at a suitable distance so as to allow the material to fully enclose
and cover them. It is preferred not to cast these pieces on to the plato but to
attach them separately for which one rivet or bolt each will be sufficient. These
picces need not be in the form shown but may be simply flat bars extending partly
or fully from rib to rib with spacing pieces between them and the plate for the
purpose of securing the covering.
7
What I claim as the invention and desire to secure by Letters Patent is :-
First A steam boiler in which the generator sections are formed of inclined
tubes and end fittings and smaller vertical connections attached between two
fittings with right and left handed threads, a cover or plug opposite the end of the
small vertical connections and a valve seated cover or covers opposite one or more
of the inclined tubes secured in the manner and for the purpose described.
Second In combination with a steam boiler and a boiler furnace of a super-
heater and connections allowing the boiler to be worked with or without the
superheater in action or to act as an addition to the generator.
Third-In combination with the end fittings on inclined tubes of a pocket cast
thereon for the support of nut and screw.
Fourth The construction of boiler casing consisting of plates having ribs pro-
jecting symmetrically toward inside and outside of boiler and two packing pieces 1
and 2 either cast on to the plates or loose or fastened to the column for the purpose
of building a continuous closed front with plates of the same pattern.
Fifth In connection with plates as described in Claim 4 of flat star or bar
shaped pieces of metal attached to the plate on distance pieces so that the covering
will surround these parts and thereby support the covering.
In witness whereof I tho said Sydney Pitt have hereunto set my hand and seal
this sixteenth day of October in the year of our Lord One thousand eight hundred
and eighty three.