Improved Means for Scaling Boilers, Ships' Hulls, Iron or Steel Bridges, or such like, and for Preventing the same from Corroding.
Year: 1886

page_text: Date of Application, 15th Nov., 1886.
Complete Left, 13th Aug., 1887.
Complete Accepted, 16th Sept., 1887.
Reserv
Improved Means for Scaling Boilers, Ships' Hulls, Iron or Steel
Bridges, or such like, and for Preventing the same from
Corroding.
I THOMAS BAMFORD of 39 Croylands Street, Walton Road, Liverpool, Boilermaker
do hereby declare the nature of this invention to be as follows:-
To effect these objects I employ a small portable high speed rotary engine which for
scaling or cleaning boilers can be hung or fastened just outside of the manhole door of
a boiler. Directly attached to the shaft of this engine is a short flexible shaft in one
two or three lengths as may be necessary. The other end of the shaft is made to pass
through a hollow handle say 8 inches long and has attached to its end a very stiff
metallic circular brush with extra short wires or teeth. To remove scale or sediment
it is only necessary to pass this tool whilst it is being rapidly revolved by the engine
over the surface to be cleaned so that in this way scale or sediment can be removed
much more effectually and rapidly than by any of the existing means such for example
as hand chipping.
To prevent corrosion I secure to the end of the flexible shaft a good short fibre
brush or buffer instead of the scaling tool and use such brush or buffing tool to rub
the surfaces until they become bright or fairly polished. For example the stays steam
chest and shell of a boiler may in this way be cleaned or polished say every other
voyage and their surfaces be thereby kept in such a condition that they entirely resist
corrusion.
11
CARPMAEL & Co.,
Agents for the Applicant.

page_text: Improved Means for Scaling Boilers, Ships' Hulls, Iron or Steel
Bridges, or such like, and for Preventing the same from
Corroding.
I, THOMAS BAMFORD, of 39 Croylands Street, Walton Road, Liverpool, Boilermaker,
do hereby declare the nature of this invention and in what manner the same is
to be performed to be particularly described and ascertained in and by the following
statement :-
This invention has for its object improved means for scaling boilers, ships' hulls,
iron or steel bridges or such like, and for preventing the same from corroding.
To effect these objects I employ a small portable high speed rotary engine which for.
scaling or cleaning boilers can be hung or fastened just outside of the manhole door
of a boiler. Directly attached to the shaft of this engine is a short flexible shaft in
one two or three lengths as may be necessary. The other end of the shaft is made to
pass through a hollow handle say 8 inches long and has attached to its end a very stiff
inetallic circular brush with extra short wires or teeth. To remove scale or sediment
it is only necessary to pass this tool whilst it is being rapidly revolved by the engine
over the surface to be cleaned so that in this way scale or sediment can be removed
much more effectually and rapidly than by any of the existing means such for example
as hand chipping.
To prevent corrosion I secure to the end of the flexible shaft a good short fibre
brush or buffer instead of the scaling tool and use such brush or buffing tool to rub the
surfaces until they become bright or fairly polished. For example the stays steam
chest and shell of a boiler may in this way be cleaned or polished say every other
voyage and their surfaces be thereby kept in such a condition that they entirely resist
corrosion.
That my invention may be more fully understood 1 will describe more in detail the
apparatus as I prefer to have it.
The engine which I prefer to employ is a small half horse power spherical engine;
it is secured or suspended in any convenient manner and if employed in scaling a
boiler either within or without the boiler.
The engine is supplied with steam by a flexible pipe and a flexible exhaust pipe is
also provided where required.
"
To the shaft of the engine a flexible shaft is secured end to end.
The shaft is such as is employed in the well known dental engine but made of
sufficient strength.
.
The flexible shaft may be in two three or more lengths coupled together. At the
extremity is a handle within which there is a short axis, one end carries the wire
brush or it may be the steel rotary cutter with which the scale is to be removed and
the other end is coupled with the end of the flexible shaft.

page_text: When scaling a boiler the apparatus is manipulated for the most part by a man
within the boiler. The engine being driven and being suitably secured puts the
flexible shaft in rapid rotation and the tool being thus very rapidly rotated cuts away
the scale to which it is applied.
The tools are so attached to the axis in the handle that they can be readily changed
or replaced by brushes made with bristles or with rubbers when desired.
Sometimes the connection between the rotary engine and the tool or cutter may be
inade in part by means of rigid axes geared together in place of being made throughout
by a flexible shaft.
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. The improved means substantially as described for scaling boilers, ships' hulls,
iron or steel bridges, or such like.
2. The combination of apparatus consisting of rotary engine, flexible shaft, handle
and rotating cutter or brush as herein set forth and applicable to scaling boilers,
ships hulls, iron or steel bridges or such like.