IMPROVE- MENTS IN APPARATUS FOR CLEANING TUBES AND FLUES OF STEAM BOILERS AND SIMILAR CONDUITS
Year: 1862

page_text: LETTERS PATENT to John Henry Johnson, of 47, Lincoln's Inn Fields,
in the County of Middlesex, and of 166, Buchanan Street, in the City of
Glasgow, North Britain, Gentleman, for the Invention of "IMPROVE-
MENTS IN APPARATUS FOR CLEANING TUBES AND FLUES OF STEAM BOILERS AND
SIMILAR CONDUITS."-A communication from abroad by Claude Dumas,
of Paris, in the Empire of France.
Sealed the 12th September 1862, and dated the 26th March 1862.
PROVISIONAL SPECIFICATION left by the said John Henry Johnson
at the Office of the Commissioners of Patents, with his Petition, on
the 26th March 1862.
I, JOHN HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County of
Middlesex, and of 166, Buchanan Street, in the City of Glasgow, North.
Britain, Gentleman, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN APPARATUS FOR CLEANING TUBES AND FLUES OF STEAM BOILERS
AND SIMILAR CONDUITS," a communication from abroad by Claude Dumas, of
Paris, in the Empire of France, to be as follows:-
This Invention consists in the application and use to and in the manufacture,
of brushes intended for the cleaning of the tubes and flues of steam boilers
and similar conduits or passages of the American rush, known as "piazava," as,
an entire substitute for bristles or tufts of wire, or in combination with those
substances. The tufts of rushes are fixed in any convenient manner into a

page_text: -SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Henry Johnson in the Great Seal Patent Office on the
26th September 1862.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County of Middlesex, and
of 166, Buchanan Street, in the City of Glasgow, North Britain, Gentleman,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-sixth day of March, in the year of our
Lord One thousand-eight hundred and sixty-two, in the twenty-fifth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said John Henry Johnson, Her special license that. I, the said John
Henry Johnson, my executors, administrators, and assigns, or such others
as I, the said John Henry Johnson, my executors, administrators, or
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 "IMPROVEMENTS IN APPARATUS FOR CLEANING THE TUBES AND FLUES OF STEAM
BOILERS AND SIMILAR CONDUITS," a communication from abroad by Claude
Dumas, of Paris, in the Empire of France, upon the condition (amongst
others) that I, the said John Henry Johnson, my executors or administrators,
by an instrument in writing under hand and seal, or under the hand and
seal of one of them, 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.
. NOW KNOW YE, that I, the said John Henry Johnson, 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, reference being had to the accompanying Drawings,
and to the letters and figures marked thereon, that is to say:-
The said Invention consists in the application and use.to and in the manu-
facture of brushes intended for the cleaning of the tubes and flues of steam:

page_text: boilers and similar conduits or passages of the rush known in South America
as "piazava" or "bastin," either as an entire substitute for bristles or tufts of
wire, or in combination with those substances. The tufts of rushes are fixed
in any convenient manner into a stack of wood, or into branches or stems of
wire, and are then trimmed to a cylindrical or other desirable form.
Figure 1 of the annexed Sheet of Drawings represents a full sized elevation
of a circular spiral brush, suitable for cleaning boiler tubes composed of the
peculiar vegetable substance herein-before described, in lieu of bristles or
wire; Figure 2 is an end view of the same.
Although I do not confine or restrict myself to any particular mode of
securing the tufts or short lengths of rush into their stock or holder, yet for
circular brushes of the kind referred to I prefer to place them between two
parallel lengths of stout wire or metallic rods, capable of being easily twisted
together in a cold state, and of retaining their twisted form. This mode of
securing the tufts or short lengths of rush is both simple, economical, and
effective, the rush being firmly nipped in the centre between the two rods by
merely twisting such rods together in a spiral form, the same operation
imparting a spiral or helical formation to the brush itself, as will be seen on
referring to the Drawings. For convenience of use, the two rods may be
welded together at one end, so as to form a single stem a, which may have a
screw thread b formed upon it for the purpose of screwing into a socket c in
the end of a long rod or handle, as shown.
Having now described and particularly ascertained the nature of the said
Invention, and the manner in which the same is or may be used or carried
into effect, I would observe in conclusion that what I consider to be novel and
original, and therefore claim as the Invention secured to me by the herein-
before in part recited Letters Patent is, the appplication and use to and in the
manufacture of apparatus for cleaning the tubes and flues of steam boilers and
similar conduits or passages of the rush known as "piazava" or "bastin," in
combination or not with bristles or tufts of wire, as herein-before described.
In witness whereof, I, the said John Henry Johnson, have hereunto
set my hand and seal, the Twenty-third day of September, One thou-
and eight hundred and sixty-two.
J. HENRY JOHNSON. (L.S.)