Improvements in the Construction of Hollow Walled Cones Employed in Certain Forms of Steam Generators and Superheaters and Water Heaters.
Year: 1899

page_text: Improvements in the Construction of Hollow Walled Cones Employed
in Certain Forms of Steam Generators and Superheaters and Water
Heaters.
I, EDWARD MAKIN, Junior, of 40, New Brown Street, Manchester, in the
County of Lancaster, Manufacturer, do hereby declare the nature of this inven-
tion to be as follows:-
My invention relates to improvements in the construction of the hollow
walled cones employed in certain forms of steam generators, and superheaters
the water heaters, for example, in the generator or heater for which Letters
Patent numbered 19016 were granted to me on the 28th August 1896.
My first improvement consists in casting the steam and water passages in
the cones so that these cones can be joined to each other, the one behind the other
by means of metal sleeves, preferably cast iron sleeves, which are introduced
between each of the joints as insertion tubes, thus enabling me to join any
required number of cones together without any separate top and bottom tubes
as in my aforesaid patent.
My second improvement consists in casting a series of gills or projections
with these cones in order to increase their efficiency in sustaining the tempera-
ture and so more effectually consuming the gases coming from the furnace
whereby smoke is diminished. I may cast these gills on the inside of the cones
or on the outside or both on the inside and outside; and, further, such gills
may be applied to other hollow walled vessels or appliances as well as to hollow
walled cones.
Although I have spoken of casting the cones and the gills, it will be obvious
that they might be wrought if preferred.
The gills serve not only to collect heat but also for the purpose above men-
tioned of sustaining the temperature and assisting combustion and such gills
project so far from the tubes or hollow walled vessels as to become nearly red
hot but at the same time are protected from burning away by the water or steam
passing through the tubes or hollow walls to which they are attached or with
which they are formed.

page_text: Improvements in the Construction of Hollow Walled Cones Employed
in Certain Forms of Steam Generators and Superheaters and Water
Heaters.
1, EDWARD MAKIN, Junior, of 40, New Brown Street, Manchester, in the
County of Lancaster, Manufacturer, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly des-
cribed and ascertained in and by the following statement:-
My invention relates to improvements in the construction of the hollow
walled cones employed in certain forms of steam generators and superheaters
and water heaters, for example, in the generator or heater for which Letters
Patent numbered 19016 were granted to me on the 28th August 1896.
My first improvement consists in casting the steam and water passages in the
cones so that these cones can be joined to each other, the one behind the other,
by means of metal sleeves, which are introduced between each of the joints as
insertion tubes, thus enabling me to join any required number of cones together
without any separate top and bottom tubes as in my aforesaid patent.
My second improvement consists in casting a series of gills or projections
with these cones in order to increase their efficiency in sustaining the tempera-
ture and so more effectually consuming the gases coming from the furnace
whereby smoke is diminished. I may cast these gills on the inside of the cones
or on the outside or both on the inside and outside; and, further, such gills
may be applied to other hollow walled vessels or appliances as well as to hollow
walled cones.
Although I have spoken of casting the cones and the gills, it will be obvious
that they might be wrought if preferred.
The gills serve not only to collect heat but also for the purpose above men-
tioned of sustaining the temperature and assisting combustion and such gills
project so far from the tubes or hollow walled vessels as to become nearly red
hot but at the same time are protected from burning away by the water or steam
passing through the tubes or hollow walls to which they are attached or with
which they are formed.
In the accompanying two sheets of drawings-
Figure 1 is a side elevation, partly sectional, of a front hollow walled cone
made according to my improvements.
Figure 2 is a plan of Fig. I
Figure 3 is a back end elevation of Fig. 1.
Figure 4 is a sectional plan of Fig. 2.
Figure 5 is a longitudinal section showing three hollow walled cones con-
structed and connected together according to my improvements.
The front cone A, which is illustrated by Figures 1 to 4 on Sheet 1, is formed
with an inlet passage 1, an annular passage 2, and an outlet passage for the
sieam or water; it has cast with it, in this case, a series of external gills or
projections 4 and another series of internal gills or projections 5. When more
than one cone is employed the passages 1 and 3 are screw threaded, as shown
in Fig. 1, to enable the front come to be connected as shown in Fig. 5, to
the second cone B by externally threaded metal sleeves which are introduced
between each of the joints as insertion tubes. The screw threads on the sleeves G
are partly right and partly left hand threads and between the two threads is
left a plain space encircling which is mounted loosely a nut 7 which is con-
nected to the sleeve by say, two feather keys on opposite sides of the sleeve.

page_text: The passages 1 and 3 in the two cones A and B are of course reversely threaded
to correspond with the right and left hand threads on the slevees 6, and a good
joint is made by turning the nuts 7 until the prepared faces of the opposite pass-
ages and are drawn tightly against the prepared sides of the nuts which
are self adjusting owing to the manner by which they are mounted on feather
keys in the sleeves. The third cone C, is, in like manner, connected to the
cone B and any convenient and suitable number of cones may be employed.
In the cones shown in Fig. 5, the external and internal gills or projections 4
and 5 are omitted but obviously either or both might be employed.
In this arrangement the passage 1 has been described as the inlet and the
passage 3 the outlet, but, if preferred, steam or water may be omitted through
the passage 3 in which case the passage 1 would be the outlet.
If necessary or desirable the cones may be further stiffened and connected
together by longitudinal bolts lying in grooves, as 8, secured by nuts at the
end of the cones. If plain insertion tubes were employed instead of the screw
threaded sleeves it is obvious that the longitudinal bolts and nuts or some
equivalent device would have to be employed to tighten up the joints.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is: -
1. Forming the steam and water passages in the hollow walled cones and
connecting the cones together by means of insertion tubes, preferably right and
left hand screw threaded insertion tubes, so as to form continuous passages with-
out any separate top and bottom tubes, all substantially as herein set forth.
2. Forming gills or projections on hollow walled cones substantially as and
for the purposes herein set forth.
H. B. BARLOW & GILLETT,
Agents for Applicant, 17, St. Ann's Square, Manchester.