A NEW OR IMPROVED PROCESS FOR THE MANUFACTURE OF A MATERIAL APPLICABLE FOR THE SEATS AND BACKS OF CHAIRS, AND GENERALLY AS A SUBSTITUTE FOR WICKERWORK
Year: 1883

page_text: LETTERS PATENT to Herbert John Haddan, of Kensington, Middlesex for an
"Invention of A NEW OR IMPROVED PROCESS FOR THE MANUFACTURE OF A
MATERIAL APPLICABLE FOR THE SEATS AND BACKS OF CHAIRS, AND GENERALLY
AS A SUBSTITUTE FOR WICKERWORK a communication to him from abroad
by Rudolph Schimmel, of Annaberg, in the kingdom of Saxony
PROVISIONAL SPECIFICATION left by the said Herbert John Haddan at the
Office of the Commissioners of Patents on the 14th March 1883.
HERBERT JOHN HADDAN, of Kensington, Middlesex, "A NEW OR IMPROVED
""
PROCESS FOR THE MANUFACTURE OF A MATERIAL APPLICABLE FOR THE SEATS
AND BACKS OF CHAIRS, AND GENERALLY AS A SUBSTITUTE FOR WICKERWORK,'
a communication to me from abroad by Rudolph Schimmel, of Annaberg, in the
kingdom of Saxony,
This invention has for its object to produce seats and backs of chairs from a
material resembling wickerwork, but cheaper than the same, and applicable also
for the manufacture of baskets and similar articles.
For this purpose I mix equal quantities of wood fibre and textile material, with
the addition of diluted chrome-glue (about three parts of chrome glue to one
hundred parts of water), and place the resulting product, when dried and polished,
between two plates serving as stamp and matrix, after which these plates are
passed between press-rollers and the product is coated with a suitable weather-
proof substance and dried..
.
.
Such a substance is obtained by mixing in a water bath 45 grammes of mastic,
60 grammes of Venetian turpentine; 100 grammes of copal and 250 grammes of
oil of turpentine, and adding about 4 kilogrammes of linseed-oil varnish. Into
this solution after it has been heated the articles to be coated are dipped and then
quickly withdrawn.
The material obtained by the mixture of textile fibre, wood fibre and chrome-
glue may be rendered more durable by the insertion of a sheet of woven
tissue

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Herbert John Haddan in the Great Seal Patent Office on the
11th September 1883.
HERBERT JOHN HADDAN, of Kensington, Middlesex, "A NEW OR IMPROVED
"
PROCESS FOR THE MANUFACTURE: OF A MATERIAL APPLICABLE FOR THE SEATS
AND BACKS OF CHAIRS AND GENERALLY AS A SUBSTITUTE FOR WICKER-WORK,"
a communication to me from abroad by Rudolph Schimmel, of Annaberg, in the
Kingdom of Saxony
This invention has for its object to produce seats, and backs of chairs from a
material resembling wicker work, but cheaper than the same, and applicable also
for the manufacture of baskets and similar articles.
For this purpose equal (quantities of wood fibres and textile material are
introduced into a rag engine and mixed with diluted chrome. glue (àbout 3 parts
of chrome glue to 100 parts of water) in such a manner as to form a pulp of
extraordinary strength.
"
This pulp is made into paste-board which may be rendered specially durable by
means of an intermediate layer of tissue of suitable material; and the paste-board
thus obtained is dried glazed and burnished with agate. After this process the
boards or sheets are polished in the same manner as wood and then made into
seats by subjecting them to the following operation:
The paste-boards are placed between two plates one of which serves as a stamp
and the other as a matrix. These plates are of the same size as the seat to be
made and represent the various patterns to be stamped into the seats.
The two plates which rest in 'a suitable frame are then passed together between
two press rollers, whereby the patterns represented by the matrix are punched
through, and the boards or seats are thus perforated.
The seats thus treated are cleaned from all the blanks which have been stamped
out but which may still adhere, after which the seats are finished or rendered
weather and water proof by coating them with a substance composed as follows:
45 grammes of mastic, 60 grammes of venetian turpentine, 100 grammes of
copal and 250 grammes of oil of turpentine are introduced into a glazed
earthenware vessel of about 1/2 litres capacity. This vessel is placed in another
vessel made of sheet metal, containing water and exposed to the heat of a spirit
lamp for about an hour, whereby the mixture is melted, after which it is added
to 4 kilogrammes of good linseed oil varnish. The temperature of the whole should
be raised about 20° Réaumur above the temperature of the atmosphere, to give the
best results.
Into this solution the articles to be coated are dipped, then quickly withdrawn,
and placed in such a manner as to allow the liquid to run off.
The articles are then subjected to a temperature of 50 to 100° Réaumur during
24 hours, after which they are ready for use.

page_text: such mixture into paste-board, placing such paste-board between two plates serving
as stamp and matrix, passing the whole between press rollers, and rendering the
product weatherproof by dipping it into the described solution and subsequent
drying, the whole substantially as described.
In witness whereof I, the said Herbert John Haddan have hereunto set my
hand and seal this 11th day of September A.D. 1883.