Improvements in Heaters for Feed Water and other Liquids.
Year: 1894

page_text: Date of Application, 12th Oct., 1894
Complete Specification Left, 11th July, 1895-Accepted, 17th Aug., 1895
PROVISIONAL SPECIFICATION.
Improvements in Heaters for Feed Water and other Liquids.
We, RICHARD HENRY TURNER, of 25, Victoria Road, Fallowfield, Manager,
and JOSEPH WHITELEY, of Clowes Street, Chapel Street, Salford, Pattern-maker,
both in the County of Lancaster, do hereby declare the nature of this invention to
be as follows:-
The apparatus heretofore in use for beating feed water for steam boilers
consisted mostly of a number of pipes connected together at the top and bottom
respectively by means of a traverse pipe or box, the water being allowed to enter
the said series of pipes at the bottom and leave at the top thereof and the soot
accumulating around the first named pipes being removed by scrapers reciprocated
mechanically.
This type of feed water heaters takes up a considerable amount of space and the
sediment from the water accumulating therein very quickly renders it subject to
frequent cleaning which is a great source of trouble.
The object of our invention is to overcome these defects and provide a feed
water heater which has a greater heating surface in comparison to the space it
takes up than heretofore has been the case and in which the scrapers are rendered
self-acting.
To this end our invention consists in the use of a rotary feed water heater
formed of rows of pipes secured radially to a hollow axis, each row at its outer
extremity being connected to a box or traverse pipe in such a manner that the
water which enters the said hollow axis at one end is caused to circulate through
the said radial rows of pipes in succession continuously and leave the hollow axis
at the opposite end to which it has entered.
In lieu of coupling the said radial pipes at their outer ends together in rows they
may be coupled together in pairs as will be readily understood.
When employing more than one of the said wheel or reel like rotary heaters for
the purpose of economizing space the radial rows of pipes are arranged to intersect
or rotate between each other.
The scrapers are placed loosely on the said pipes and operate by gravitation
thus rendering the same self-acting and scraping each pipe twice every revolution.
The heater described is also applicable for heating other liquids, chemicals, and
the like.
Dated this 11th day of October 1894.
F. BOSSHARDT & Co.
Agents to Applicants.
Improvements in Heaters for Feed Water and other Liquids.
We, RICHARD HENRY TURNER, of 25, Victoria Road, Fallowfield, Manager,
and JOSEPH WHITELEY, of Clowes Street, Chapel Street, Salford, Pattern-maker,
both in the County of Lancaster, do hereby declare the nature of this invention
Price 81.

page_text: and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
The apparatus heretofore in use for heating feed water for steam boilers consisted
mostly of a series of pipes connected at the top and bottom respectively by means
of a traverse pipe or box, the water being allowed to enter the said series of pipes
at the bottom and leave at the top thereof and the soot accumulating around the
same being removed by scrapers reciprocated mechanically.
This type of feed water heater takes up a considerable amount of space and the
sediment from the water accumulating therein very quickly renders it subject to
frequent cleaning which is a great source of trouble.
it
The object of our invention is to overcome the said defects and provide a feed
water heater which bas a greater heating surface in comparison to the space
takes пр than heretofore has been the case and in which the scrapers are rendered
self-acting.
And in order that our invention may be more fully understood we have caused to
he appended hereunto three sheets of drawings marked with letters of reference
indicating like parts in the various figures.
Figs. 1, 4 & 11 are sectional side views, Figs. 2 & 5 sectional plans of Figs. 1
& 4 respectively, Fig. 3 is a plan detached of a modification, Fig. 6 is a sectional
end view of Fig. 4, Fig. 7 a longitudinal section, Fig. 8 an elevation and Figs. 9
& 10 are cross sections at lines A-B and C-D of Fig. 8, at an enlarged scale, of
a detail of our invention. Figs. 12 & 13 are respectively a cross section and a
partial longitudinal section showing our invention applied to marine boilers.
In carrying out our invention the improvements generally consist in the cou-
struction of a rotary feed water heater formed of rows of pipes a secured to or
formed radially on a hollow axis having passages b₁ and so connected with each
other that the water which is admitted at one end of the hollow axis b is caused to
circulate through the radial rows of pipes a in succession continuously and leave the
hollow axis b at the opposite end to which it has been admitted.
It is obvious that our invention may be carried out in a number of forms.
Referring to Sheet I, according to one form we connect or couple together the
outer ends of the pipes a in longitudinal rows by means of a traverse box c (see
Fig. 2), or the pipes a may be connected or coupled together longitudinally in
pairs by means of boxes c, as shown in Fig. 3.
The hollow axis is mounted in suitable bearings d and rotated slowly, in the
present instance by means of worm wheel gearing e, f, the worm wheel e being
secured upon one end of the hollow axis band the worm f upon a shaft g having
driving pulley h.
The cold water or other liquid enters the hollow axis bat a¹ and after traversing
the pipes a row-wise by way of the axis b, as shown by arrows, and owing to the
said pipes and hollow axis being exposed to the hot gases from the boiler flue it
becomes heated and leaves the hollow axis at a in a hot state from whence it is
conveyed to the boiler or other place for use.
i are the scrapers placed loosely around the pipes a, but instead of being moved
mechanically they operate by gravitation and thus are rendered self-acting, each
scraper traversing the length of its pipe twice during one revolution of the beater.
The scrapers i may be formed round or spirally or have any other convenient
form.
The heater described is employed inside a chamber k communicating with the
chimney and the boiler flue, similarly as is the case in ordinary feed water heater,
the ends of the hollow axis or inlet a¹ and outlet a being allowed to project
through the walls of the chamber k and the driving gear e, f, g, h, being arranged
outside the latter.
The inlet a' is furnished with a blow-off valve and the outlet a with a safety
valve m.
In lieu of connecting or coupling the pipes a together in rows longitudinally, we
may connect or couple the same together in pairs circularly, as shown on Sheet II.

page_text: In this case the box c, shown on Sheet I, takes the form of a double elbow pipe c
and serves to connect or couple the pipes a together in pairs, the said elbow and
pipes being formed with suitable flanges as will be readily understood and a scraper i
employed around each of the same.
In some cases the traverse pipe or elbow c and pipes a communicating therewith
may be formed in two pieces or one piece only as will be readily understood.
Either of the two types of rotary heater described may be employed to rotate in
pairs, as shown in Fig. 11, Sheet III, the longitudinal or circular rows of pipes a
being adapted to intersect or rotate between each other and thereby effect a great
saving of space.
As shown in Figs. 12 & 13, Sheet III, the rotary water heater described in its
single form may also be applied to marine boilers by suitably mounting it in the
funnel n a little distance above the boiler o.
It is obvious that the heater described may also be employed for heating other
liquids for instance chemicals in solution.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim, is;-
1st. An apparatus for heating feed water and other liquids, consisting of an
axis b suitably rotated and having a number of tubular arms or pipes a carrying
scrapers i, the said axis and arms or pipes being exposed to heat and arranged in
communication with each other to permit of circulating the water or other liquid
to be heated through the same whilst the said scrapers operate by gravitation
due to the rotation of the apparatus, all substantially as and for the purpose set
forth.
α
2nd. In an apparatus, as specified in the preceding claim, forming the axis b with
an inlet at one end and outlet at the opposite end and with tubular arms or pipes
arranged in communication with each other in longitudinal or circular all
substantially as and for the purpose set forth.
rows,
3rd. The general construction and combination of parts constituting our
improvements operating substantially as and for the purpose set forth.
Dated this 10th day of July 1895.
F. BOSSHARDT & Co.,
4 Corporation Street, Manchester, Agents to Applicants.