Improvements in or applicable to Fuel Economisers or Feed-water Heaters.
Year: 1895

page_text: Date of Application, 5th Oct., 1895
Complete Specification Left, 3rd July, 1896-Accepted, 26th Sept.,
1896
PROVISIONAL SPECIFICATION.
Improvements in or applicable to Fuel Economisers or Feed-water
Heaters.
I, WALTER GOODBRAND, of the Firm of Goodbrand and Holland of Southall
Iron Works, Southall Street, Manchester, in the County of Lancaster, Engineers,
do hereby declare the name of the said invention to be as follows:-
My invention relates to the construction and arrangement of scrapers for
scraping the tubes of fuel economisers.
Such scrapers have thitherto been formed double, that is, of two scrapers, each
double scraper being formed in three segments each segment connected by a bar
so that when the three segments are fitted to the pipe to be scraped they encircle
its periphery
These double segmental scrapers have the bevel or scraping edge at the upper
edge of the upper scraper and in some cases at the upper edge of the lower
scraper also, but the scraping edge of the lower scraper may be on its lower edge.
The euds of the segments of the scrapers which come together have also been
made to meet at an angle.
"
According to my invention I make the scrapers double scrapers and in three
segments, each segment of upper and lower scraper being connected by a bar and
the scraping edges are at the upper edge of the upper scraper and may be at the
upper edge of the lower scraper or on its lower edge and the ends of the segments
may also come together at an angle.
But 1 prefer to make according to my invention the ends of one segment stepped
to correspond with stepped ends on the other segments thus the segmental ends of
the scrapers overlap each other so as to be certain to cover the entire periphery
of the pipe to be scraped and the stepped ends help to keep the segments in
position in the lengthway of the pipe.
According to my invention I also make cross projections from the middle of
each bar connecting the upper and lower segments and at the ends of these
projections for one segment I form forked hooks to hook upon pins (the axes of
which are parallel to the axis of the pipe being scraped) which pins are upon
the two ends of one of the other segments and the third segment has pins at the
end of one projection and a hook at the end of its other projection.
These pius and hooks thus form a kind of binge, and permit the double
segmental scrapers to give way to inequalities and obstructions in working but
hold all the segments together and prevent them from getting out of their
places.
Each connecting bar between the upper and lower segments of the scrapors has
the usual semi-comical projection which rests upon the bars giving motion to the
scrapers in the ordinary manner.
Dated this Fourth day of October 1895.
PETER J. LIVSEY,
Agent.

page_text: Improvements in or applicable to Fuel Economisers or Feed-water
Heaters.
I, WALTER GOODBRAND of the Firm of Goodbrand and Holland of Southall
Iron Works, Southall Street, Mauchester in the County of Lancaster, Engineers,
do hereby declare the nature of this invention and in what manner the same is to
be performed, to be particularly described and ascertained and by the following
statement:-
My invention relates to the construction and arrangement of sciapers for
scraping the tubes of fuel economisers.
Such scrapers have hitherto been formed double, that is, of two scrapers, each
double scraper being formed in three segments, each segment connected by a bar
so that when the three segments are fitted to the pipe to be scraped they encircle
its periphery.
These double segmental scrapers have the bevel or scraping edge at the upper
edge of the upper sciaper and in some cases at the upper edge of the lower
scraper also, but the scraping edge of the lower scraper may be on its lower edge.
The ends of the segmonts of the scrapers which come together have also been
made to meet at an angle.
According to my invention I make the serapers double scrapers and in three
segments, each segment of upper and lower scraper being connected by a bar and
the scraping edges are at the upper edge of the upper scraper and may be at the
upper edge of the lower scraper or on its lower edge and the ends of the segments
may also come together at an angle.
But make according to one modification of my invention the ends of one
segment stepped to correspond with stepped ends on the other segments thus the
segmental ends of the scrapers overlap each other so as to be certain to cover tho
entire periphery of the pipe to be scraped and the stepped ends will also help to
Leep the segments in position in the lengthway of the pipe.
According to any invention I also make cross projections from the middle of each
bar connecting the upper and lower segments and at the ends of these projections
for one segment 1 form forked hooks to hook upon pins (the axes of which are
parallel to the axis of the pipe being scraped) which pins are upon the two ends of
one of the other segments and the third segment has pius at the end of one
projection and a hook at the end of its other projection.
These pins and hooks thus form a kind of hinge, and permit the double
segmental scrapers to give way to inequalities and obstructions in working, but
hold all the segments together and prevent them from getting out of their
places.
Each connecting bar between the upper and lower segments of the scrapers bas
the usual semi-conical projection which rests upon the bars giving motion to the
scrapers in the ordinary manner.
Fig. 1, 18 an outside elevation of one of my improved double segment scrapers
marked 1.
Figs. 2 and 3 are similar views to Fig 1, respectively of my improved double
segment scrapets marked 2 and 3.
Fig 4, 18 a vertical section upon the line A-B Fig. 3.
Fig. 5, is a plan section on the line C-D Figs. 1, 2 and 3.
Fig. 6, is a plan view representing the scrapers round a tube shown in section,
and resting on the frame (paitly shown by which the scrapers are moved up and
down on the tube.

page_text: Fig. 7, illustrates a modification in respect of the ends of the segments where
they come together, and
Fig. 8, is a vertical section of the same modification though the stepped parts
on the ends of the segments of the scrapers where they come together on the
line E-F Fig. 7.
Fig. 9, is a front view illustrating another modification similar to that shown by
Figs. 7 and 8.
In the illustrations Figs. 1, 2, 3 and 4—a, 18 the upper, and a', the lower scraping
segments in each case as shown the sciaping edge, a', is at the upper and lower
edge of the Beginerts.
a', is the bar connecting the upper and lower segments.
a', are lateral projections from about the middle of each bar a".
No. 1 (Fig. 1) hins books a', at both ends of the projection.
No. 2 (Fig. 2) has pins a, at both ends of the projections, and
No. 3 (Fig. 3) has a hook a', at the end of one, and pins as, at the end of the
other projection a*.
The manner in which the hooks a³, and pins aº, are connected together when on
the pipe b, is shown in Fig. 5.
Each double segmental bar has a semi conical projection a', from it.
Fig. 6, shows how these projections a', rest in hollows or notches on the carrying
bar c, having arms c', which act and is actuated in the ordinary manner for a
number of sets of scrapers for a series of pipes to be scraped. The semi-conical
projection a', on No. 1 segment on one side of the longitudinal bar c, rests in a
notch e, in the bar c, on one side of a line drawn between the centres of the
tubes b, on opposite sides of the longitudinal bar C, and the semi-conical
projection a', for the corresponding tube b, on the other side of the bar c, is in a
notch e, in the bar c, on one side (to the right) of the notch c', in the same
bar c.
With scrapers 80 arranged the upper soraping edges of the upper segments a,
come and are pressed in close contact with the tube b, when the scrapers are
ascending and the lower scraping edges of the lower segments a', come and arc
pressed in close contact with the tube b, when the scrapers are descending the
tube.
Figs 7 and 8 illustrate the modification of my invention when the ends of the
adjoining segments (a 01 a') come together and are formed with steps, the upper
step a, on the end of one segment, the lower step a³, on the end of the other
adjoining segment.
Fig. 8, is a vertical section through the steps a and a³, against the surface of the
tube b.
If desired the depth of the lower step aº, may be increased as shown by the
dotted lines a*.
On the end of one segment may be formed to step down as shown by ab, Fig. 9,
and form a scraping surface below or within the other end of the adjoining
Begment.
There is a space a, Fig 8, between the steps for the soot to get clear away from
the scraping edges.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim 18.-
1. The construction and arrangement of scrapers substantially as and for the
purpose hereinbefore described and illustrated by the drawings.
2. The construction of double scrapers in three segments with projections from
the vertical bar connected with the upper and lower scraping segments arranged
with hooks and pins or their equivalents to connect the double segments of the
scrapers together when placed round the tube, substantially as and for the purpose
herembefore described and illustrated by the drawings.

page_text: 3. The construction of double scrapers in segments with their ends stepped
substantially as and for the purpose herein before described and illustrated by
reference to Figs. 7, 8 and 9 of the drawings.
Dand Jam 1002
PETER J. LIVSEY,
Agent.