Year: 1891

page_text: Date of Application, 11th Mar., 1891-Accepted, 18th Apr.,
1891
Fig. 7 is a section along line III III;
Fig. 8 is a similar section as Fig. 6, the singeing tubes turned sidewards;
Fig. 9 indicates the singeing tubes arranged in a box through which the cloth is
drawn.
My singeing machine consists of the two elements A & B being supported by
means of the heads D & D in the standards C & C¹; the heads D'D' can be
turned in the brackets C C and the singeing elements or singeing rollers A & B can
rotate in the heads D D'. The heating of the rollers A & B is done by means of
an electrical current led through them. TT are the pins on which the heads D D¹
turn round.
The material to be singed is led round the rollers as indicated by the arrows az
on the thick dotted straight lines in Figs. 6 & 8; the rollers themselves turn
slowly in opposite direction as indicated by the arrows y: this is done in order
to present always a new heated roller surface to the cloth surrounding it.
The head D therefore is bored centrally and in the boring is placed the spindle E
projecting out of the head D and having pulley F fixed to it or a handle for
turning it. At the inner end the spindle is provided with a wheel G gearing into
the wheel H which is keyed upon a box S being coupled to the heating roller A.
At the side of the wheel H is mounted upon S another wheel I which is in gear
with the wheel K upon the singeing roller B and turns this in the direction
desired.
The nut carrying the pin U, which is insulated by the pieces R & R', is made
conical so that it can always be kept in firm contact with the box piece S.
By inserting a wheel Ĺ and disengaging the wheels I & K another turning
direction for the roller B will be obtained and by shifting the wheel G out of gear
with H, into the recess in D, as indicated by dotted lines, the rollers A & B are
set out of gear and they only rotate by the frictional action of the cloth or ribbons
surrounding them.
The rollers A & B are constructed as follows:
Into the interior of a copper tube M, I place a bar N made of clay or of any
other heat absorbing or non conducting material, round which a metal wire O
of great electrical resistance is wound, which by means of suitable connecting
pieces P&Q, and insulating pieces R & R is brought in connection at both
ends with the positive and negative poles of any source of electricity (an electrical

page_text: battery for instance). R2 is a non conducting diaphragm for preventing the
heating of the journal in the head D¹.
Now when a current of electricity is led through the wire O the bar N is heated
and serves at the same time as an accumulator of heat 'having a large surface of
radiation, thus heating gradually the tube M surrounding it until this is glowing
or until it has got sufficiently heated for the purpose required.
When it is desired to surround a larger surface of the singeing tubes A & B by
the material to be singed, the heads D & D¹ are placed so that they stand
horizontal as in Fig. 8.
Instead of erecting the singeing and heating tubes A & B in a machine as shown
by Figs. 1-8, they may be mounted in a box as in Fig. 9 alternately one at top and
one at the bottom of it and being separated by diaphragms W and they then serve
as drying apparatus, the rollers Z may be driven by gearing from the outside or
they may be turned round merely by the friction of the material pulled around
them.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1). A singeing apparatus for textile fabrics in which the singeing rollers A & B
of metal tubes are so mounted in heads (D, D¹) that they can rotate round their
own geometrical axes and that they can also be turned together within any angle
from 0° to 180° round a common geometrical axis forming the centerline of the
pins T T of the heads D D. The rollers being heated by an insulated
accumulator of heat (N) in their interior round which an electrical current
is led.
2). Arranging the rollers Z of same construction as the rollers A & B, that is
having an insulated accumulator in their interior round which an electrical current
is led, in a box with diaphragmns W, which rollers may be turned by gearing or by
the frictional action of the material pulled round them only.
Dated this 3rd day of March 1891.
KARL I. MAYER,
Agent for L. Lettré.