Improvements in Carding Machines for Producing Wadding.
Year: 1891

page_text: Date of Application, 25th Sept., 1891
Complete Specification Left, 25th June, 1892-Accepted, 20th Aug., 1892
PROVISIONAL SPECIFICATION.
Improvements in Carding Machines for Producing Wadding.
:
I, FRANZ HAHN of Einsiedel, in the Empire of Germany, Manufacturer, do
hereby declare the nature of this invention to be as follows:-
This invention relates to a process and appliances, in carding machines, for
producing cotton wadding uniformly combed through with wood flock.
With the wood flock wadding hitherto known the cotton fleeces were produced
on the ordinary wad carding machine, and the wood flock i.e. finely powdered
wood dust was strewn between the single cotton layers as they were rolled on the
lap drum at the carding machine, so that the wood flock lay in layers in the wads
and was not bound by the cotton.
The wad thus produced is little absorptive, and the wood layers fall out when
it is being used or prepared for surgical purposes. These drawbacks are removed
by the following device applicable to an ordinary carding machine.
A wood box containing a wire sieve is revolubly lodged with its bottom end
over the doffing cylinder in the frame of the machine and is drawn to one side
by a spiral spring guided and secured in a holder attached to the frame, and to the
other side by a lever, which is connected by a band with the box and iş
pressed sideways at certain intervals by the rotation of a toothed disc. The
box is thus given a shaking or reciprocating movement by the rapid rotation of
said disc.
To disengage the automatic shaking movement, the box is pressed so far towards
the disc, that a flat rail lying over the box and revolubly suspended in the
fulcrum of the lever catches with a hole over a pin provided on the upper rim of
the box.
The machine works as follows: After having been brought from the feed rollers
on the taker-in and hence to the main cylinder, the cotton to be treated passes à
number of working pairs, each of which consists of a slowly running worker and
a rapidly running clearer, and hence arrives on the doffing cylinder. The latter
receives continually and uniformly wood flock from the sieve of the box by the
shaking movement of the same, so that when the doffing cylinder revolves towards
the main cylinder, the wood flock is combed into the wad layer of the latter.
Thereby the wood flock and cotton unite as much as possible with each other and
are taken as a single layer from the doffing cylinder and wound in the usual manner
on a wood cylinder.
DLL fantomber 1801
HUELSER & Co.,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Carding Machines for Producing Wadding.
I, FRANZ HAHN, Manufacturer, of Einsiedel, in the German Empire, do
hereby declare the nature of this invention and .in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:-—
The pine wool wadding hitherto known, is composed of alternate layers of cotton
wool produced on the ordinary carding machine, and of pine wool or similar wood
fibre in a finely divided condition, the pine wool being strewn on and between the

page_text: different sheets of cotton wool, as they were rolled on the lap roller of the carding
machine.
The wadding made in this manner, without any special means for securing
adhesion between the pine-and the cotton wool, has the drawback, that it is only
slightly absorbent, and that the wool layers crumble and fall out, when the wadding
is being used or prepared for surgical purposes.
In order to avoid these defects, I employ an apparatus which is adapted to
perform a special process and applicable to an ordinary carding machine.
In the accompanying drawings,
Fig. 1 is a side elevation of a carding machine provided with an apparatus
embodying my invention.
Fig. 2 shows the said apparatus on a larger scale.
r
The apparatus comprises a wooden box & which is provided with a sieve bottom;
and mounted over the doffer e by means of a pivot p secured to the frame A of the
machine. This box is held on one side by a helical spring i attached to a vertical
bar or stand fixed to the machine frame, while on the opposite side the box k
is connected by a rod o with a lever / pivoted at its upper end to the machine
frame.
A toothed disc m is mounted on a horizontal axle in proximity to the said
lever, in such a manner, that, when the disc m revolves on its axis, the lever h
will be pressed sideways at regular intervals, and thereby pull the box k to the
left. The revolving disc m and the antagonistic spring i will therefore impart to
the box k an automatic shaking motion, about the pivot p. The disc m is mounted
on the axle of one of the clearing rollers.
If it is desired, to set this shaking mechanism out of action, the box, k is pressed
to the left, until the eyelet v of a rod 1, engages with the pins fixed to the top of
the box k. The said rod is pivoted to the machine frame by means of the same
pin which serves to suspend the lever h.
The machine works as follows:
After the cotton wool or other fibrous material to be used, has been supplied by
the feed rollers a to the roller b, and thence to the carding cylinder c, it reaches
the carding rollers d, the number of which depends on the nature of the
material to be treated. The said rollers d are arranged in pairs, each consisting
of a slowly revolving working roller d' and a quickly moving clearing roller d'.
The doffer e receives pine wool which drops from the box k, after having passed
through the sieve bottom of the same. Owing to the uniform shaking motion of
the box, the wood wool is distributed evenly upon the doffer, as it revolves
towards the cylinder, and the pine wool lying on the doffer is combed into the
fleece or layer of wadding of the cylinder. In this manner the pine wool and the
cotton wool are combined with each other most intimately, and are then taken off
the doffer by the beater f as a single fleece, which is subsequently wound on the
drum'g in the usual manner.
The product thus obtained combines great softness, and uniformity with
durability, as the pine wool is uniformly distributed in the fleece by carding, and
therefore not liable to fall off.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The process for the manufacture of wood wool wadding, which consists in
causing finely divided pine wool or wood fibre to drop uniformly upon the doffer of
a carding machine, so that the said wood wool will be combed into the fleece on the
carding cylinder and thereby intimately and uniformly incorporated with the same,
substantially as described.
2. In a carding machine, an appliance for supplying a uniform layer of pine.
wool to the doffer, comprising a sieve box, (k) and mechanism for imparting to it

page_text: a shaking motion from a toothed disc m mounted on the shaft of one of the
clearing rollers, substantially as described.
Dated this 24th day of June 1892.
HUELSER & Co.,
Temple Chambers, Temple Avenue, London, Agents for the Applicant.