Year: 1888

page_text: Date of Application, 21st Aug., 1888
Specification Accepted, 28th Sept., 1888
applied thereto.
Figure 2. is a sectional plan through c, d, Figure 1.
Figure 3. is a sectional front view of Figure 1.
Figure 4 is a plan of the tube chamber.
Figure 5 is a side elevation and front view, respectively, showing the means of
supporting the tubes; and figure 6 is a group of details of the parts for supporting
the tubes.
The object of this invention is to obtain in a steam generator of the type shown in
the drawings, the following advantages: The easy removal, for cleaning or repair,
of a tube or tubes: To render the tube chamber and tubes easy of access for cleaning:
To lead the water from the front part of the water chamber freely into the descending
internal water tubes: To transmit the circulation caused by the downward flow of
water in the front part of the chamber and the upward flow of water in the back part
of the chamber to the water in the upper vessel or boiler K.

page_text: To the above ends, the division plates existing in the water chambers are constructed
in the following manner. The division plate o of the tube water chamber W consists
of a diaphragm made up of a series of plates y, y, of the forms shown in Figure 6.
The plates, y, are provided with funnel-pieces x, x, which receive the internal
tubes 8, S. The plates y, y, are disposed in the chamber W to form a diaphragm was
shown in Figures 3 and 5, and provide a front water chamber or inlet to the tubes s, s,
and a back water chamber for the reception of the tubes r, r, and the outlet of water
therefrom, thus the stream of water flows down the front water chamber, down the
tubes s, and returns with the steam produced through the annular space between the
tubes s and "; to the back portion of the chamber W, through which it ascends to
the main water and steam chest K. The plates y, of which the diaphragm w is built up,
are made up of different forms to suit their respective positions in the diaphragm as
shown in Figures 5 and 6, the plates y being provided with the funnels a, a, which
are connected to the internal pipes s, s, and closely fitted into holes or openings in the
plates y, y. The chamber W is provided with a series of through bolts placed between
the tubes. These bolts are provided with nuts, h, and washers 1, and by reason of the
chamber W being slightly inclined, the plates y, y, lie against and are supported by
the washers when in position. The bolts are also provided with nuts i and square
washers or collars u, and between the plates y and the nuts i there are provided spring
picces having square slots which ship onto the square collar u.
These spring
pieces press the plates y, y, against the washers and hold the plates firmly in
their place. The plates y are notched at their bottom, where they rest upon the
collar u on the bolts, and they are notched at their top in the form of and to
clear--the nut i, so that the plate y after the removal of the spring piece z can be laid
away from the tubes and be removed through the opening o in the front plate of
the chamber W. The holes in the plates y are in diameter equal to the internal
diameter of the tubes r. The greatest width of the plate y is rather more than the
extreme diameter of the flange of the pipe r, but is at the same time rather smaller
than the smallest diameter of the opening o in the front plate of the chamber W.
The object of giving plates y their special form and proportions as above stated is as
follows:-
(1). After the internal tubes has been removed the tuber can be cleaned by means
of a brush which can be passed through the opening o, and which fits the internal
diameter of the tube r.
(2). After the tubes has been removed and the spring piece z loosened, the plate y
can be laid over and removed through the opening o.
(3). The tuber can be removed through the opening o.
(4). The several plates y, y, through their close connection together form the
diaphragm w which separates the water-ways of the chamber W.
(5). The water passes freely from the front water chamber to the tubes s,s by means
of the funnels x, x.
The diaphragm w is continued up through the vessel K by means of the
diaphragms d, d and t, t. From the centre of the diaphragm t, t, there extends right
through the vessel K the vertical diaphragm e that reaches nearly to the end of the
vessel K. The diaphragm e is cut away at the bottom where it joins the diaphragm t
as shown at Figure 1, and to this cut away portion is connected an angled plate f
which closes the left hand upper part of the back portion of the water chamber W to
the vessel K. The right hand upper part of the back portion of the chamber W is
supplied with a funnel g which in conjunction with the diaphragm t and the plate f
forms a channel that carries the steain produced by the ebullition of the water in the
tubes from the back portion of the chamber W into the right hand half of the upper
vessel K (Figure 3) whence the steam reaches the left hand half round the back end
of the diaphragm e (Figure 2) and passes to the steam chest. The diaphragm t (see
Figure 3) is cut away at the left upper portion a, a, a, thus enabling the steam to
pass to the steam chest. As the horizontal termination of the cut away portion a, a, a
(Figure 3) lies below the lowest water level of the vessel K, after having flowed
through the right hand half of the vessel K and back through the left hand half

page_text: of the vessel K, the water can pass through the opening a, a, a to the front part of
the chamber W and thence to the tubes s. The tubes, generate the steam and the
steam and water flow up the back part of the chamber W into the funnel
described, and the steam passes to the steam chest of the vessel K.
9, as
As shown in Figure 3, the diaphragm t together with the plate f forms a pocket
in which mud and other matters separated from the water, are deposited, and it is
prevented from passing to the water chamber W and tubes s, r.
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. In steam generators of the type herein described the arrangement of the plates y
constructed as described, and funnels, constructed as described, which plates y form
a diaphragm in the water chamber as described and at the same time serve to receive
the internal tubes as described.
2. The construction of the plates y, y, and the funnels x, x substantially as herein
described, whereby
(a) The plates y,y can be removed through the openings o, so that the entire
water chamber is free of access.
(b) The internal tubes s can be taken out through the openings o without removing
any portion of the diaphragm w.
(c) After the funnels a, x, with the internal tubes s, s have been removed, the
external tubes can be cleaned through the opening o by any suitable
means.
(d) One tube may be treated as before described without interfering with the
other tubes forming the group.
3. The arrangement and construction of the diaphragm t with its opening a, a, a
and the connections to the water chamber W, and diaphragm w.
4. The arrangement and construction of the diaphragme with the funnel g and angle
plate f, whereby communication is made between the back portion of the water
chamber W and the vessel K.
Dated this 18th day of August 1888.