IMPROVEMENTS IN THE MANUFACTURE OF UNDERLININGS FOR CARPETS, AND IN MACHINERY EMPLOYED THEREFOR, a com- munication, to be as follows:
Year: 1871

page_text: PROVISIONAL SPECIFICATION left by William Robert Lake at the
Office of the Commissioners of Patents, with his Petition, on the
16th November 1871.-A communication from abroad by Claudius
Alexander Pease, of Astoria, New York, United States of America.
I, WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co.,
Patent Agents, Southampton Buildings, London, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN THE MANUFACTURE OF
UNDERLININGS FOR CARPETS, AND IN MACHINERY EMPLOYED THEREFOR, a com-
munication, to be as follows:-
"
The present Invention relates to that class of underlinings for carpets
made of a layer of loose fibrous material, such as cotton, and a layer or
layers of paper, or other close sheet material applied to either one or both
sides of the said layer of loose fibrous material.
The said Invention consists first in producing such underlinings, and a
union between the loose fibrous material and its paper or other close
sheet material, by depositing the loose fibrous material or causing it to
be delivered or laid upon one of the paper sheets when in a condition of

page_text: partially moist and hardened pulp, and then in any proper manner
drying the said pulp paper sheets. In case the loose lap is to be provided
with a paper sheet on each side, it is simply necessary to repeat sub-
stantially the process above referred to, either directly after the first
combining of the loose fibrous sheet and paper pulp sheet, or after that
first paper pulp sheet has been dried.
Second. In combination with the above the said Invention consists in
producing a selvedge or closed edge along the length of the loose fibrous
sheet by causing a union of the paper pulp sheets thereat, they as will be
obvious readily uniting by pressure when in a wet or pulpy condition.
Third. The said Invention consists in the combination and arrange-
ment of two sets of mechanism such as is employed in the manufacture
of paper for the pulp sheet, the one in a plane of operation above the
other with endless apron felts so arranged and running from the two as
to convey the endless sheets of pulp, on one of which the layer or bat of
loose fibrous material has been previously laid to and between a common
set of presser rolls, by which as the combined pulp sheets and lap pass
between them the loose fibrous lap is compressed within the moist pulp
sheets and made to unite or interlock therewith, producing a union of
the whole as desired.
Fourth. The said Invention consists in constructing the presser rolls,
either one or both, with bands or rings preferably of india-rubber or other
elastic material at suitable points in their lengths to produce an additional
pressure at the edges of the pulp sheets, to cause the two to unite closing
the combined material at its edges.
Fifth. In combination with the combined arrangement of mechanism
to produce the two pulp sheets and the union with the fibrous lap. This
Invention further consists in the arrangement of a system of drying
drums or cylinders in such manner as to secure the contact of the pulp
sheets therein without the use of presser rolls to confine them, and to
subject both pulp sheets to contact with the drying drums as they pass
from one end to the other of the series.