IMPROVEMENTS IN MACHINERY OR APPARATUS FOR THE MANUFACTURE OF SHEET TIN
Year: 1859

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 "IMPROVEMENTS
IN MACHINERY OR APPARATUS FOR THE MANUFACTURE OF SHEET TIN."—A
communication from Monsieur Masson, of Paris, in the Empire of
France.
-
Sealed the 5th August 1859, and dated the 23rd March 1859.
PROVISIONAL SPECIFICATION left by the said John Henry Johnson
at the Office of the Commissioners of Patents, with his Petition, on
the 23rd March 1859.
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 MACHINERY OR APPARATUS FOR THE MANUFACTURE OF SHEET
TIN," a communication from abroad by Monsieur Masson, of Paris, in the
Empire of France,. to be as follows:--
This Invention relates to an improved construction and arrangement of.
machinery or apparatus employed in the manufacture or production of sheet
tin or foil suitable for capsules, wrappers, tinning glass, and other purposes.
The main features of this Invention are the attaching of the vessels or
receivers, into which the melted tin is poured, to endless bands or straps, which
have a continuous travelling motion imparted to them; also in the employ-

page_text: ment of elastic presser bars, so arranged as to press the receivers firmly against
the spreading plate or surface during their passage over or along such surface.
The endless bands are carried by pullies in a strong frame, and the receivers
of the tin are connected thereto by any simple mode of attachment. A winch
handle on the upper pully shaft imparts the requisite movement to the endless
bands. The receivers during their downward course are full of melted tin,
and are sempty when they ascend again, and whilst descending they press
against an elastic body, which may consist of a cloth stretched according to
the pressure of the receivers. To moderate, this pressure perpendicular bars
are used, which bear on one side against the entire length of the bands, and
at the other are fixed by the intervention of helical springs to the main
framework.
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 19th September 1859.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOIN
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, Gentle-
man, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-third day of March, in the year of our Lord
One thousand eight hundred and fifty-nine, in the twenty-second 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 MACHINERY OR APPARATUS FOR THE MANUFACTURE OF SHEET
TIN," a communication from abroad, by Monsieur Masson, of Paris, in the
Empire of France, upon the condition (amongst others) that I, the said
John Henry Johnson, by an instrument in writing under my hand and
seal, should particularly describe and ascertain the nature of the said Inven-
tion, and in what manner the same was to be performed, and cause the same

page_text: 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 relates to an improved construction and arrangement of
machinery or apparatus employed in the manufacture or production of sheet
tin or foil suitable for capsules, wrappers, tinning glass, and other purposes.
The main features of this Invention are the attaching of the vessels,
receivers, or recipients, into which the melted tin is poured, to endless bands or
chains, which have a continuous travelling motion imparted to them; also in
the employment of elastic bars, so arranged as to moderate the pressure of the
recipients of the molten tin against the spreading plate or surface during their
passage over or along such surface. The endless bands are carried by pullies
in a strong frame, and the recipients of the molten tin are connected thereto
by hooks or other simple modes of attachment. A winch handle on one of the
pulley shafts imparts the requisite movement to the endless bands. The
recipients during their downward course are full of melted tin, which is spread
against the elastic surface, and are empty again by the time they ascend. The
elastic body or surface may consist of a cloth or other suitable material more
or less stretched according to the pressure of the recipients against it. To
moderato this pressure, perpendicular bars are used, which bear on one side
against the entire length of the bands, and at the other are fixed by the
intervention of helical springs to the main framework.
And in order that the said Invention may be fully understood, I shall now
proceed more particularly to describe the same, and for that purpose I shall
refer to the several Figures on the Sheet of Drawings hereunto annexed, the
same letters of reference indicating corresponding parts throughout all the
Figures.
Figure 1 of my Drawings represents a front view of my apparatus; Figure 2
is a side elevation of the same; Figures 3, 4, and 5 are different views of the
vessels or receivers; and the rest of the Figures are various details employed
in the construction of the apparatus.
A, A, is a wooden frame fitted with cross bars A', A', and secured to a wall
of brick or masonry; B, B, (Figures 8 and 9) are bracket bearings fitted to
each corner of the frame for the purpose of carrying the shafts of the two pairs
of pullies C, C, (Figure 6,) actuated by the winch handle E (Figures 10

page_text: and 11), the motion of one pair of pullies being transmitted to the other pair
by the endless bands or chains F, F, to which are fixed the two vessels or
receivers G, G, (Figures 3, 4, and 5,) which are the recipients of the molten
tin to be formed into sheets. These recipients are cach attached to the endless
bands or chains herein-before mentioned by the hooks H, H, (Figuro 7,) which
.keep them in constant motion during their descent when charged with metal,
as well as during their ascent when empty. For producing sheet tin from tin
in the molten state, it is simply requisite to keep the charged recipients during
their descent in closo contact with an elastic web or cloth I stretched in
accordance with the contact pressure of the recipients G, G. In order to
moderate the pressure of these recipients, I propose to employ the bars J, J,
connected by the rols K, K, with the main framing. These rods are provided
with helical springs L, L, so as to yield moro or less under the pressure of the
recipients G, according as they contain moro or less metal, or as the-thicker or
'thinner sheet is required to be produced. In place of having the apparatus
disposed in a perpendicular position, it may. be inclined at any desired angle,
whilst the incans of obtaining the requisite pressure against the cloth or elastic
surface may also be modified. Any number of vessels or recipients G may
also be fitted to the endless bands or chains F, and any suitable material may
be used for the elastic spreading surface I.
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,-
First, the general construction and arrangement of apparatus for making
sheet tin, as herein-before described.
Second, the system or mode of making sheet tin by employing one or more
vessels or recipients attached to an endless travelling band or chain, and
spreading the molten tin against an olastic surface of any suitable description,
as herein-before described.
In witness whereof, I, the said John Henry Johnson, have hereunto
my hand and seal, this Thirteenth day of September, One thousand
set
J. HENRY JOHNSON. (L.S.)