Improvements in Apparatus for Preventing Corrosion of, Preventing Incrustation in, or Facilitating the Removal of Incrustation from Steam and other Boilers.
Year: 1886

page_text: Date of Application, 30th Aug 1886
Complete Left, 21st May, 1887
Complete Accepted, 21st June, 1887
Improvements in Apparatus for Preventing Corrosion of, Preventing
Incrustation in, or Facilitating the Removal of Incrustation from
Steam and other Boilers.
I SARAH HOYLE of No. 172 Stanley Street Accrington in the county of Lancaster
Housewife do hereby declare the nature of this invention to he as follows:-
Whereas when zinc or similar material is used as an electrode for the purposes of
preventing corrosion of preventing incrustation in and facilitating the removal of
incrustation from steam boilers and other vessels in which water or other liquid is
heated or evaporated or for any of these purposes it is considered advisable to ensure
so far as may be perfect metallic (or electric) contact between this electrode and the
boiler or other vessel to be operated upon, and whereas existing arrangements for
ensuring metallic contact are imperfect at the outset or become imperfect after
being in use some time or are inconvenient to form, and whereas zinc when used
as aforesaid is apt to become corroded and disintegrated and to waste away.
For the purposes of this my invention I cast or otherwise arrange the zinc in
convenient form upon and in electric contact with a dish or tray made in such form
and of such material (as for example brass) as will tend to support the zinc
during its corrosion and will retard or tend to retard its disintegration as aforesaid.
And I suspend this tray loosely within the boiler upon the point of a metallic stud or
upon some other conductor in electric contact with such portion of the boiler or
other vessel as it may be desired to protect from corrosion or incrustation, or from
which it is desired to facilitate the removal of incrustation and I so arrange the
tray and its support that the water or other fluid when in motion from boiling or
from other cause will cause the tray to oscillate upon the point of support and so by
their friction tend to keep the points of contact clean and bright and consequently in
a suitable condition to readily transmit electric currents passing between the tray and
its support.
It will be understood that each part of this apparatus may be considerably varied
in form and material to meet the requirements of varying circumstances and that more
than one complete apparatus may be used in one boiler at the same time.
Doind thin Tunni” oimhth day of Anonst 18x6

page_text: Improvements in Apparatus for Preventing Corrosion of, Preventing
Incrustation in, or Facilitating the Removal of Incrustation
from Steam and other Boilers.
I SARAH HOYLE of No. 172 Stanley Street, Accrington, in the county of Lancaster,
Housewife do hereby declare the nature of my invention for IMPROVEMENTS IN
APPARATUS FOR PREVENTING CORROSION OF, PREVENTING INCRUSTATION IN, OR
FACILITATING THE REMOVAL OF INCRUSTATION FROM STEAM AND OTHER BOILERS and in
what manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :—
Whereas when zine or similar material is used as an electrode for the purposos of
preventing corrosion of, preventing incrustation in, and facilitating the removal of
incrustation from steam boilers and other vessels in which water or other liquid is
heated or evaporated, or for any of these purposes, it is considered advisable to ensure
so far as may be perfect metallic (or electric) contact between this electrode and the
boiler or other vessel to be operated upon, and, whereas existing arrangements for
ensuring metallic contact are in my opinion imperfect at the onset or become
imperfect after being in use some time or are inconvenient to forin, and, whereas
zinc or similar material when used as aforesaid is apt to become corroded and
disintegrated and to waste away.
For the purposes of this my invention I cast or otherwise arrange the electrode in
convenient form upon and in electric contact with a dish or tray made in such form
and of such material (as for example brass) as will tend to support the electrode
during its corrosion and will retard or tend to retard its disintegration as aforesaid.
And I suspend this tray loosely within the boiler upon the point of a metallic stud or
upon some other conductor in electric contact with such portion of the boiler as it
may be desired to protect from corrosion or incrustation or from which it is desired
to facilitate the removal of incrustation, and I so arrange the tray and its support
that the water or other fluid when in motion from hoiling or from other cause
will cause the tray to oscillate upon the point of support, and so by their friction
tend to keep the points of contact clean and bright and consequently in a suitable
condition to readily transmit electric currents passing between the tray and its
support.
It will be understood that each part of this apparatus may be considerably varied
in form and material to meet the requirements of varying circumstances and that more
than one complete apparatus may be used in one boiler at the same time.
But that my invention may be readily understood I have appended to this my
specification thereof one sheet of drawings explanatory of one form of my said invention,
in which drawings
Figure 1 is a ground plan.

page_text: The stud is marked 3,
and the portion of the boiler to which the stud is screwed is marked 4.
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
An improved apparatus for ensuring so far as may be perfect metallic (or electric)
contact between the electrode and the boiler or other vessel in the manner and for the
purposes substantially as hereinbefore described.