IMPROVEMENTS IN THE MANUFACTURE OF FELT CARPETS
Year: 1866

page_text: LETTERS PATENT to August Röders, of Soltau, in the Kingdom of
Hanover, for the Invention of "IMPROVEMENTS IN THE MANUFACTURE OF
FELT CARPETS."
Sealed the 30th October 1866, and dated the 4th May 1866.
PROVISIONAL SPECIFICATION left by the said August Röders at the
Office of the Commissioners of Patents, with his Petition, on the 4th
May 1866.
I, AUGUST RÖDERS, of Soltau, in the Kingdom of Hanover, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN THE MANU
FACTURE OF FELT CARPETS," to be as follows:-
This Invention has for its object the manufacture of improved felt carpets.
For this purpose white felt manufactured of wool or other fibrous materials in
the usual way is prepared in the following manner :-The back of the white
felt is consolidated with a cementing composition, which is applied evenly all
over it, and is made to enter the felt by spreading, beating, or pressure. The
cementing composition is conveniently prepared by mixing together one pound
of strong boiled linseed oil and two pounds of chalk, and combining these with
suitable coloring matters, earths, or pigments to produce any desired colour.
When the cementing composition, which may be applied one, two, or three
times, is sufficiently dry to prevent the stretching of the felt, the other or
right side of the fabric is printed, steamed, washed, and dried in the same
manner as with other felt carpets. The cementing composition can also be
applied on the back of a printed and finished felt carpet or drugget.. ¡ On the
back of the carpet, prepared in the above-mentioned manner, patterns may be
i

page_text: produced by printing, or painting, or by embossing by passing the carpet
between suitable rollers properly engraved; so prepared the back of the
carpet can be used as a common floor-cloth, even if the other side is already
spoiled by long use. Instead of linseed oil and chalk any other cementing
composition used in the manufacture of floor-cloth-or- kamptulicon may
be employed; also size, paste, or gum, either alone or mixed with chalk,
whitening, and other materials.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said August Röders in the Great Seal Patent Office on the
3rd November 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, AUGUST
RÖDERS, of Soltau, in the Kingdom of Hanover, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourth day of May, in the year of our Lord One
thousand eight hundred and sixty-six, in the twenty-ninth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
August Röders, Her special licence that I, the said August Röders, my execu-
tors, administrators, and assigns, or such others as I, the said August Röders,
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 "IMPROVEMENTS IN THE MANU-
FACTURE OF FELT CARPETS," upon the condition (amongst others) that I, the said
August Röders, 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.
NOW KNOW YE, that I, the said August Röders, do hereby declare the
nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof, that is to say:-
This Invention has for its object the manufacture of improved felt carpets.
For this purpose white felt manufactured of wool or other fibrous materials in

page_text: the usual way is prepared in the following manner :-The back of the white
felt is consolidated with a cementing composition, which is applied evenly all
over it, and is made to enter the felt by spreading, beating, or pressure. The
cementing composition is conveniently prepared by mixing together one pound
of strong boiled linseed oil and two pounds of chalk, and combining therewith
suitable coloring matters, earths, or pigments to produce any desired color.
When the cementing composition which may be applied one, two, or three
times, is sufficiently dry to prevent the stretching of the felt, the other or
right side of the fabric is printed, steamed, washed, and dried in the same
manner as with other felt carpets. The cementing composition can also be
applied on the back of a printed and finished felt carpet or drugget. On the
back of the carpet, prepared in the above-mentioned manner, patterns may be
produced by printing, or painting, or by embossing by passing the carpet
between suitable rollers properly engraved. So prepared the back of the
carpet can be used as a common floor-cloth, even if the other side is already
spoiled by long use. Instead of linseed oil and chalk any other cementing
composition used in the manufacture of floor-cloth or kamptulicon may
be employed; also size, paste, or gum either alone or mixed with chalk,
whitening, and other materials.
I prefer to proceed as follows:-I take six pounds of strong boiled linseed
oil, six pounds of lampblack, and two pounds of chalk well ground and
mixed together. This mixture is evenly spread over the back side of the
felt by hand, and with the same instrument as is used in the manufacture of
floor-cloth; the piece is left three to four weeks in the air to dry, and the
right side is printed, steamed, washed, and dried in the same manner as with
other felt carpets; then the back is rubbed off with pumicestone and varnished
over with suitable oil color.
In witness whereof, I, the said August Röders, have hereunto set my
hand and seal, this Twentieth day of October, in the year of our
Lord One thousand eight hundred and sixty-six.