IMPROVEMENTS IN JACQUARD CARDS AND CARDS FOR CERTAIN PACKING PUR- POSES, AND IN THE PROCESS AND MACHINERY TO BE EMPLOYED IN THEIR MANUFACTURE
Year: 1879

page_text: PROVISIONAL SPECIFICATION left by Edward Weild at the Office of the
Commissioners of Patents on the 2nd April 1879.
EDWARD WEILD, of the City of Manchester, in the County of Lancaster, Engineer.
"IMPROVEMENTS IN JACQUARD CARDS AND CARDS FOR CERTAIN PACKING PUR-
POSES, AND IN THE PROCESS AND MACHINERY TO BE EMPLOYED IN THEIR
MANUFACTURE."
The object of my Invention is to treat card made of paper pulp, so that when
operated upon by my process it will be almost if not entirely impervious to damp,
moisture, or atmospheric changes, and which process or treatment will also add
stiffness and strength to the material, and thus render card made of cheap material
superior to those made of more expensive material, and the advantages obtained
from my improved jacquard cards are that they do not break or wear out so soon,
and are not liable to expand and contract by changes in the atmosphere as ordinary
jacquard cards, and consequently those imperfections in weaving arising from this
cause are obviated; and in respect of cards for packing certain dyed goods my
improvements prevent the damage which frequently occurs with the ordinary cards
used, which absorb damp or moisture and extract the colors from the goods, while
my improved cards being impervious to moisture do not absorb or extract the colors,
and, besides this, prevent in great degree damp from getting to the goods, which
may be the cause of mildew and damage therefrom.
My Invention consists in coating card board (I prefer to treat that made prin-
cipally from wood pulp) with a composition hereinafter stated, this composition
being applied in a hot state, the card being then immediately passed between hot
pressing rollers, or the card is passed through hot pressing rollers kept properly
coated or supplied with the hot composition.
The composition which I prefer to use for the purpose, as far as my present
experience goes, is formed of 29 parts by weight of resin,
2 parts by weight of Hungarian flour,
1 part by weight hydro-carbon oil, and
2 parts by weight of paraffin wax of the melting point 130° Fah.
The machine which I prefer to employ consists of two hollow rollers, or two
pairs of hollow rollers, the upper roller weighted by levers against the lower roller.
On one side of these rollers there is a trough to contain the above named compo-
sition, and the hollow rollers and this trough are heated by jets of gas burning in

page_text: the hollow rollers or under the trough; or other means of heating, such as steam,
may be used if desired.
The card is deflected by curved directors through the composition in the trough,
and then passes between the rollers, and is received in a trough or on an endless
apron on the other side of the rollers.
The hot composition is or may be conveyed from a trough by rollers to the lower
roller, and from another trough by rollers to the upper roller, which rollers are or
may be made hollow, and heated by gas jets burning in them.
There are also, or may be, rollers working against the pressing rollers having a
reciprocating end motion to distribute the composition more evenly upon the
pressing rollers.
Thin "doctors" of steel or other material are or may be applied to scrape any
surplus composition there may be on the card as it passes from the pressing
rollers.