A NEW METHOD FOR REMOVING THE INCRUS- TATION FROM BOILERS, KETTLES, AND OTHER SIMILAR ARTICLES.”
Year: 1875

page_text: LETTERS PATENT to Louis Ludolph, of 2, Richmond Villas, Crouch
End, for the Invention of "A NEW METHOD FOR REMOVING THE INCRUS-
TATION FROM BOILERS, KETTLES, AND OTHER SIMILAR ARTICLES.”
TATION FROM BOILERS, KETTLES, AND OTHER SIMILAR ARTICLES.
PROVISIONAL SPECIFICATION left by the said Louis Ludolph at the
Office of the Commissioners of Patents, with his Petition, on the
13th May 1875.
I, LOUIS LUDOLPH, of 2, Richmond Villas, Crouch End, do hereby
; declare the nature of the said Invention for “A NEW METHOD FOR REMOVING
THE INCRUSTATION FROM BOILERS, KETTLES, AND OTHER SIMILAR ARTICLES," to be
as follows:
It is well known that great disadvantage and danger constantly arise
from the incrustation of boilers, which frequently results in explosions,
accompanied with great loss and injury, whilst great inconvenience is
also experienced from the same cause when kettles and other similar
articles become similarly incrusted, such incrustation rendering them
comparatively useless.
Now I have discovered that I can practically obviate these difficulties
by using a powder which I manufacture of the following ingredients

page_text: mixed together in about equal proportions, that is to say:-To about
2 ounces of glue. I add about 3 ounces of caustic soda, 3 ounces of
Glaubers salts, 3 ounces of chalk, and 3 ounces of common salt. I mix
them together in the form of a powder, the glue serving to bind the
various ingredients together.
I place an adequate quantity of such powder in the bottom of the
boiler, kettle, or other vossel, when in a short such incrustation is
removed, and the boiler, kettle, or other vessel is in every respect as
useful for all practical purposes as when new.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Louis Ludolph in the Great Seal Patent Office
on the 12th November 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, LOUIS
LUDOLPH, of 2, Richmond Villas, Crouch End, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirteenth day of May, in the year of our Lord
One thousand eight hundred and seventy-five, in the thirty-eighth year
of Her reign, did, for Herself, Her heirs and successors, give and grant
unto me, the said Louis Ludolph, Her special license that I, the said
Louis Ludolph, my executors, administrators, and assigns, or such others
as I, the said Louis Ludolph, my executors, administrators, and assigns,
should at any time agree with, and no others, from time to time
and at all times thereafter during the term therein expressed, should
and lawfully might make, use, exercise, and vend, within the United
Kingdom of Great Britain and Ireland, the Channel Islands, and Isle
of Man, an Invention for "A NEW METHOD FOR REMOVING THE INCRUSTATION
FROM BOILERS, KETTLES, AND OTHER SIMILAR ARTICLES," upon the condition
(amongst others) that I, the said Louis Ludolph, my executors or
administrators, by an instrument in writing under my, or their, or one
of their hands and seals, should particularly describe and ascertain the
nature of the said Invention, and in what manner the same was to be
performed, and cause the same to be filed in the Great Seal Patent Office
within six calendar months next and immediately after the date of the
said Letters Patent.

page_text: NOW KNOW YE, that I, the said Louis Ludolph, do hereby declare
the nature of the said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement thereof, that is to say :-
This Invention has for its object a new method for removing the
incrustation from boilers, kettles, and other similar articlés.
It is well known that great disadvantage and danger now constantly
arise from the incrustation of boilers, which frequently result in
explosions accompanied with great loss and injury, whilst great incon-
venience is also experienced from the same cause when kettles and other
similar articles become similarly incrusted, such incrustation rendering
them comparatively useless.
Now I have discovered that I can practically obviate these difficulties
by using a powder, which I manufacture of the following ingredients
mixed together in about equal proportions, that is to say :-To about
two ounces of glue I add about three ounces of caustic soda, three
ounces of Glaubers salts, three ounces of chalk, and three ounces of
common salt. I mix them together in the form of a powder, the glue
serving to bind the various ingredients together.
I place an adequate quantity of such powder in the bottom of the
boiler, kettle, or other vessel desired to be cleansed, when in a short time
such incrustation is removed and the boiler, kettle, or other vessel is in
every respect as useful for all practical purposes as when new.
Having thus particularly described and ascertained the nature of my
said Invention, and the manner of performing the same, I would have
it understood that what I claim is, the manufacture and use of the
powder for the removal of the incrustation from boilers, kettles, and
other similar vessels, substantially in the manner and for the purposes
herein-before set forth and described.
In witness whereof, I, the said Louis Ludolphi, have hereunto set
my hand and seal, this Fourth day of November, in the year of
our Lord One thousand eight hundred and seventy-five.