Improvements in Napping or Nap-raising Machines for Textile Fabrics.
Year: 1891

page_text: Date of Application, 20th June, 1891
Complete Specification Left, 20th Apr., 1892-Accepted, 20th July, 1892
PROVISIONAL SPECIFICATION.
Improvements in Napping or Nap-raising Machines for Textile
Fabrics.
We, AUGUST MONFORTS, Manufacturer, and JOSEF EWERHARD, Engineer,.
both of Munchen-Gladbach, Germany, do hereby declare the nature of this.
invention to be as follows:-
-
This invention relates to improvements in nap raising or napping machines.
provided with a rotating drum which carries workers or rolls that receive a variable
rotary motion independent of the drum.
In such a machine according to this invention some of the workers or rolls.
(hereinafter called napping rolls) are provided with card clothing that serves to
raise the nap and whose hook shaped teeth point in the same direction as the
movement of the drum whilst the other workers or rolls (hereinafter called brushing
rolls) and serving for brushing or laying back the nap, are of greater diameter and
are furnished with card clothing directed to some extent in a rearward direction,
and both series of rolls viz., the napping rolls as well as the brushing rolls, are
driven independently of one another and independently of the movement of the
drum, with a speed capable of being varied and in a direction opposite to that of
the movement of the drum.
In this machine the napping rolls and brushing rolls which as before stated are
of different diameters, are arranged at equal radial distances from the axis of the
drum. Each of the two series of rolls is cleaned by a special cleaning device. The
napping rolls, whose diameter is smaller than that of the brushing rolls are cleaned
each by a brush that rotates with the drum. These brushes are fixed inside the
drum and are carried by frames that are fixed upon the drum shaft and are common
to all the brushes. By suitable adjustment of these frames on the drum shaft the
engagement of all the brushes with the napping rolls can be regulated simultaneously
and according to requirement.
When the brushes become filled with waste, they are partly rotated backward
until the brushing rolls enter the same and free them from the waste. The
brushing rolls are cleaned by one or more cleaning rolls mounted in bearings in the
frame work of the machine outside the drum.
The napping rolls and brushing rolls carry driving pulleys at both ends, the
driving pulleys at one side being arranged externally to, and on the other side:
internally to their bearings, and in such a manner that when the outer pulleys of
the napping rolls are arranged on the left hand side of the drum, the outer pulleys
of the brushing rolls are situated on the right hand side of the drum. The driving
pulleys of both series of rolls are of greater diameter than the rolls.
The napping rolls and the brushing rolls are driven independently of one another
by means of uncrossed belts from two driving shafts located in bearings below
the rolls.
The driving shafts are independently driven each from a counter-shaft by means
of belts and stepped pulleys the arrangement being such that the speed of each
series of rolls can be varied independently of the other. The countershafts carry
toothed wheels that are driven by a toothed wheel on the drum shaft, so that they

page_text: both receive rotary movement in a direction opposite to that of the drum. Since
this rotation of the countershafts is transmitted by uncrossed belts to the driving
shafts, both series of rolls, viz. the napping rolls as well as the brushing rolls, will
receive rotary movements in a backward direction, independent of one another and
capable of variation, the speed of rotation being always greater than the forward
movement of the rolls due to their connection with the drum.
.
"Coned pulleys may be used in lieu of the stepped pulleys if desired.
The material, the map of which is to be raised, passes over the drum in the
same direction as the motion thereof the speed of the material being capable of
variation at will independently of the means employed for driving the two series
of rolls.
The napping rolls whose cards engage in the material in the direction of the
movement of the drum, produce a nap of similar direction. The brushing rolls, the
brush clothing of which is inclined in a direction opposed to that of the movement
of the drum, and which rotate quickly backward in this direction, have for object
to set up or set back the nap produced by the napping rolls, and thereby to enable
the following napping rolls to get a better hold or engagement with the inaterial in
order to facilitate the further development of the nap..
Dated this 20th day of June 1891
COMPLETE SPECIFICATION.
Improvements in Napping or Nap-raising Machines for Textile
Fabrics..
We, ANGUST MONFORTS, Manufacturer and JOSEF EWERHARD, Engineer,
both of München-Gladbach, Germany, 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 :-
This invention relates to improvements in nap raising or napping machines
provided with a rotating drum which carries workers or rolls that receive a variable
rotary motion independent of the motion of the drum.
In such a machine according to this invention some of the workers or rolls
(hereinafter called napping rolls) are provided with card clothing that serves to
raise the nap and whose hook shaped teeth point in the same direction as the
movement of the drum, whilst the other workers or rolls (hereinafter called
brushing rolls) and serving for brushing or laying back the nap, are of greater
diameter and are furnished with card clothing directed to some extent in a rear-
ward direction, both series of rolls viz., the napping rolls, as well as the brushing
rolls, being arranged to be driven independently of one another and independently
of the speed of the drum, with a speed capable of being varied, and in a direction
opposite to that of the movement of the drum.
In the accompanying drawings
Fig. 1. is a side elevation, and. Fig. 2 a part front elevation of a napping or nap
raising machine for textile fabrics constructed according to this invention.
In this machine the napping rolls a and brushing rolls which, as before stated,
are of different diameters, are arranged with their axes at equal radial distances
from the axis of the drum. Each of the two series of rolls is cleaned by a special
cleaning device. The napping rolls a the diameter of each of which is smaller than
that of the brushing rolls are cleaned each by an obliquely arranged brush c that
rotates with the drum. These brushes c are fixed inside the drum and are carried
by frames or supports d that are adjustably fixed upon the drum shaft and are
common to all the brushes. By suitable adjustment of these frames & on the drum

page_text: brushes with the napping rolls a can be regulated
simultaneously and according to requirement.
.
The
When the brushes & become filled with waste, they are partly rotated backward.
until the brushing rolls enter the same and free them from the waste.
brushing rolls are cleaned by one or more cleaning rolls e mounted in bearings in,
the frame work of the machine outside the drum.
Each of the napping rolls a and brushing rolls carries a driving pulley at each
end, the driving pulleys at one side being arranged externally to, and on the other
side internally to their bearings, and in such a manner that if the outer pulleys of
the napping rolls are arranged on the left hand side of the drum, the outer pulleys:
of the brushing rolls will be situated on the right hand side of the drum. The
driving pulleys of both series of rolls are of greater diameter than the rolls.
themselves.
The napping rolls a and the brushing rolls are driven independently of one
another by means of uncrossed belts, from two driving shafts ff located in bearings.
below the rolls.
One of these driving shafts fis driven from a shaft g and the other from another
shaft by means of belts and conical pulleys hh and h¹ respectively, the
arrangement being such that the speed of each series of rolls can be varied.
independently of the other. The shafts g g' carry toothed wheels respectively
that are driven by a toothed wheel k on the drum shaft, so that they both receive
rotary movement in a direction opposite to that of the drum. Since this rotation:
of the shafts g g' is transmitted by uncrossed belts to the working rolls both series
of rolls, riz. the napping rolls a as well as the brushing rolls b will be rotated in a.
backward direction by the endless belts shown, independent of one another and with
a speed that is capable of variation.
The material, the nap of which is to be raised, passes over the drum in the
same direction as the motion thereof, the speed of the material being capable of
variation at will independently of the means employed for driving the two series.
of rolls.
The napping rolls a whose cards engage in the material in the direction of the
movement of the drum, produce a nap in a similar direction because although the
rolls revolve in a backward direction the points of the cards will by reason of
the rolls being carried forward by the drum travel in hypocycloidal paths extending
from the material in the direction of rotation. The brushing rolls b, the brush.
clothing of which is inclined in a direction opposite to that of the movement of the
drum, and which rotate quickly backward in this direction, have for object to set.
up or set back the nap produced by the napping rolls a and thereby to enable the
following napping rolls a to get a better hold or engagement with the material in.
order to facilitate the further development of the nap.
Having now particularly described and ascertained the nature of the said inven-.
tion and in what manner the same is to be performed we declare that we are.
aware of the Specification of Letters Patent No. 5394 of 1888 granted to John
Clayton Mewburn and also of the Specification of Letters Patent No. 9096
of 1891 granted to Ernst Gessner and we wish it to be understood that we do not.
claim anything described and claimed in either of those Specifications; but what we
claim is
1. A napping or nap-raising machine, in which the napping rolls are smaller in
diameter than the brushing rolls, and the rolls of each series are arranged with
their axes in a common circle concentric with the axis of the drum, and in which
the two series of rolls are independently driven in a direction opposite to that of the
movement of the drum by separate driving mechanism, the speed of which is capable
of being varied substantially as herein described.
2. In a napping or nap-raising machine for textile fabrics, wherein two series of
rolls are arranged in an annular row concentric to the axis of the drum and one of
said series of rolls, namely the brushing rolls, is cleaned from the outside by cleaning..

page_text: rolls, and the other series, namely the napping rolls, is cleaned from the inside, the
arrangement of the frames or support d adjustably fixed upon the drum shaft and
provided with a number of obliquely arranged brushes c, there being one for cach
of the napping rolls, the arrangement being such that by rotating or turning the
frames or support d, the brushes can be caused to engage to a greater or less extent
with the napping rolls, or can be caused to engage with the series of brushing rolls
substantially as herein before described for the purpose specified.
Dated this 20th day of April 1892.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicants.