Improvements in Nap Raising Machines.
Year: 1890

page_text: Date of Application, 29th Dec.. 1890
Complete Specification Left, 18th Sept., 1891-Accepted, 24th Oct., 1891
PROVISIONAL SPECIFICATION.
[Communicated from abroad by FERDINAND MARTINOT, of Sedan, in the French
Republic, Engineer.]
Improvements in Nap Raising Machines.
I, OLIVER IMRAY of No. 28 Southampton Buildings, Chancery Lane, in the
County of London, Fellow of the Institute of Patent Agents, do hereby declare the
nature of this invention to be as follows:-
:-
In the Specification No. 10,076 of 1887 of an invention communicated from
abroad by Ferdinand Martinot was described a nap raising machine in which pairs
of card rollers are mounted on levers and are caused to reciprocate along the
surface of the fabric under treatment According to the present invention,
communicated by the said Ferdinand Martinot, the card rollers, instead of being
mounted on levers and caused to reciprocate, are mounted in pairs in stationary
bearings, and the two of each pair are connected by toothed or friction gearing, or
by bands or chains so that they both revolve in the same direction, but at different
speeds. The one roller of each pair has the dents of its card set so that the fabric
meeting them in its forward movement causes the roller to revolve and to drive at a
higher speed the other roller, which has the dents of its card set in the opposite
direction so as to raise the nap of the travelling fabric. The proportions of the
gearing connecting the rollers of each pair, or the diameters of the rollers
themselves may be varied to suit the different kinds of fabric on which they may
have to operate.
Dated this 29th day of December 1890.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Nap Raising Machines.
1, OLIVER IMRAY, of No. 28, Southampton Buildings, Chancery Lane, in the
County of London, Fellow of the Institute of Patent Agents, 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 :-
In the Specification No. 10,076 of 1887 of an invention communicated from
abroad by Ferdinand Martinot was described a nap raising machine in which pairs
of card rollers are mounted on levers and are caused to reciprocate along the
surface of the fabric under treatment. According to the present invention
communicated by the said Ferdinand Martinot the card rollers, instead of being
mounted on levers and caused to reciprocate, are mounted in pairs in stationary
bearings, and the two of each pair are connected by toothed or friction gearing, or
by bands or chains so that they both revolve in the same direction, but at different
speeds. The one roller of each pair has the dents of its card set so that the fabric
meeting them in its forward movement causes the roller to revolve and to drive at a
higher speed the other roller, which has the dents of its card set in the opposite
direction so as to raise the nap of the travelling fabric.
The proportions of the gearing connecting the rollers of each pair, or the
diameters of the rollers themselves may be varied to suit the different kinds of
fabric on which they may have to operate.
Fig. 1 of the accompanying drawings shews a longitudinal section of a nap raising
machine, constructed according to the above described invention.
Fig. 2 shews an enlarged view of a pair of the card rollers with their clearing
rollers and driving gear,

page_text: The framing F carries on brackets F¹ a series of pairs of card rollers G H, of
which there may be any desired number according to the nature of the material to
be acted upon and the character of the nap to be produced. In the drawing six
pairs of rollers are shewn which is the number required for cloth of medium quality;
they are divided into two sets of three, between which is a feeding roller B for
feeding forward the cloth I. This is made to pass from the receptacle J, over a
series of other feed rollers B' and beneath guide rollers D which keep it pressed
down upon the surfaces of the card rollers (Has it travels along in the direction
of the arrow.
The dents of the rollers G being inclined against the direction of travel of the
cloth I they are carried round thereby, at the same time raising the fibre on the
surface to a certain extent as they leave the cloth. The shafts of these card rollers
carry toothed wheels K, gearing through an intermediate wheel I, with a wheel M
of slightly smaller diameter on the shaft of the card rollers H, the dents of which
are inclined in the direction of the cloths travel. Thus the two card rollers both
revolve in the same direction but H revolves at a quicker speed than G, and as G
revolves with the some surface speed as the cloth, it follows that the rollers H
revolve with a greater surface speed than the cloth and consequently its dents effect
the raising of the nap thereon to the required degree. The extent of the action of
the rollers H may of course be varied both by varying the proportions between the
toothed wheels and M, so as to make the surface speed of H greater or less, and
by regulating the position of the pressing rollers D so as to bring the cloth more or
less in contact with the card surfaces.
Below the card rollers are clearing rollers N' N2 N³ &c. for clearing the card
rollers of fibre. These clearing rollers are all driven by the same driving pulley E
and cords E E2; as the alternate rollers N' N³ &c. require to be driven in one
direction in order to act properly on the dents of the rollers G, while the other
alternate rollers N2 N' &c. require to be driven in the contrary direction for clearing
the rollers H, the cord E' which drives N' N³ &c. is crossed while the cord E
which drives N2 N4 &c. is open.
If it be required to flatten down more or less the nap of the cloth after leaving
the card rollers G H, a card roller having straight dents may be made to act
upon the cloth.
The various rollers &c. are all driven from the driving shaft A by belts and
pullies as shewn. The cloth is led away after treatment over guide pullies P P to
a table Q.
It will be readily understood that the required differential surface speed of the
card rollers may be produced by other means than by toothed gearing, such as by
frictional gear, pullies and belts &c. or by making the two rollers of differential
diameters while revolving with the same angular velocity.
Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be performed, 1 declare that what I
claim is :-
1. In machines for raising the nap on cloth, the method of utilising the travel of
the cloth for actuating the card rollers, substantially as herein described.
2. In nap raising machines the combination of a card roller such as G, which
receives rotary motion from the travel of the cloth, with a card roller such as H
which receives rotary motion from the roller G in such manner as to revolve with a
quicker surface speed than the cloth, substantially as described.
3. A nap raising machine combined and operating as herein described with
reference to the accompanying drawings.
Dated this 14th day of Sentember 1801
ABEL & IMRAY,
Agents for the Applicant.