Year: 1890

page_text: Date of Application, 25th Sept., 1890-Accepted, 25th Oct., 1890
Fig. 1 is a vertical section of the machine,
Fig. 2 a plan thereof and
Fig. 3 a sectional view of the coloring drum drawn to an enlarged scale.
1 is a vertical shaft carrying table 2 on which the material 3 to be colored is
extended. On the lower part of vertical shaft 1 is a worm wheel 4 which by sliding
over a feather on the shaft may be placed in and out of gear with screw 5 on shaft 6
the latter being driven by a motor through pullies 7. On shaft 6 is an excentric 8 in.
connection through rod 9 with levers 10, 10 mounted so as to oscillate at 11..
Levers 10, 10 are by their upper ends in connection with side frames.12, 12, stayed.
together by cross rod 12¹ and carrying hollow shaft 13 provided at its circumference
with perforations set out in a screw like or winding line for the outlet of the color or
pigment. On hollow shaft 13 is tixed the coloring drum 14 perforated at the periphery
and surrounded with a cloth covering. On hollow shaft 13 within coloring drum 14.
are mounted small discs 17 for the regular guidance of the color passing out of hollow.
shaft 13. 18 is an india rubber tube which connects this shaft with color or pigment
vessel.19. At the end of the tube within the hollow shaft is a sliding stopper 20
which in conjunction with a sliding stopper 21 arranged in the opposite end of the
hollow shaft, is for the purpose of contracting when necessary as in the case of.
materials of a reduced area having to be colored-the length of the colour outlet.
On shaft 6 is a friction disc 22 bearing against disc 23 and this against disc 24.
mounted on the same shaft as a bevel toothed wheel 25 engaging with wheel. 26 on
vertical shaft 1 for the purpose of driving table 2 at a higher velocity than that given
by the screw and worm wheel mechanism before referred to. Disc 23 is carried on a
movable lever 27 and may be moved away from discs 22 and 24 by pressing upon
treadle 28. 29 is a cord which connects hollow shaft 13 to spring 30.
When the machine is to be used the coloring drum 14 is raised to the position
shewn in dotted line in Fig. 1 and the material to be colored extended on table 2.
The coloring drum is then lowered to the working position and the machine set in
motion causing table 2 to rotate, levers 10, 10, to oscillate and side frames 12, 12, to
move to and fro carrying with them the coloring drum.
It has in practice been found necessary to extend the material to be colored as
smoothly and evenly as practicable and so maintain it during the coloring process. To
this end the coloring drum 14 in addition to the to and fro motion and the rotary
motion before referred to has given to it a motion having for effect to diminish its
circumferential velocity from the middle position directly over the middle of the table
outwards towards the circumference of the table and to increase the same from the
circumference backwards towards the middle position. This is done by a pulling force
acting tangentially to hollow shaft 13 through cord 29 in connection with spring 30,
the cord winding and unwinding on one of the ends of hollow sbaft 13, the winding

page_text: commencing as soon as the hollow shaft leaves the middle position and the pull being
in proportion to the strain on spring 30 through the shortening of the cord. Upon
the outward travel of the coloring drum the material will be pressed out towards the
circumference of the table and upon the inward travel it will be pressed towards the
middle of the table. The increase of friction between the edge of the material and
the coloring drum gives this part a greater gloss and more thorough coloring than is
usually the case.
From the foregoing it is obvious that the material to be colored should be extended
concentrically to the table so as to agree with the motion of the coloring drum, to
facilitate which operation, the latter with frames 12, 12, in which it is carried is raised
by any suitable hoisting apparatus, the drum and frames then having the position
shewn in dotted lines in Fig. 1, the side position relatively to the machine, of the
raised drum being necessary owing to its connection with cord 29 and spring 30.
When a greater velocity of the table than that given by the screw and worm wheel
mechanisin, is required for the purpose of extending the material, fixing the color, or
driving out by centrifugal force any excess water, color or acid, the worm wheel 4 is
slid out of gear with screw 5 by any suitable lever mechanism, then treadle 28 pressed
down bringing disc 23 to bear against discs 22 and 24 thus forming the connection
between shafts 6 and 1 so as to obtain the higher speed.
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 process for coloring leather skins and like materials performed by friction
with the use of a small quantity of color consisting in arranging the material upon a
rotary table over which is moved a drum receiving the color and supplying it in regular
quantity to the material to be colored and being at the same time set in rotation
substantially as described and shewn.
2. To perform the process referred to in the preceding claim the apparatus con-
sisting of rotary table 1 on which the material to be colored is extended in combination
with coloring drum 14 which is moved to and fro over the rotary table whereby it is
at the same time set in rotary motion substantially as described and shown.
3. In order under the process referred to in claim 1 to give a deep, penetrated
color to the material operated upon, the arrangement of a coloring drum consisting
of a finely perforated sheet metal cylinder covered with cloth and carried on a hollow
shaft which is provided at its circumference with discs and with perforations set out
in a helical line, the said hollow shaft supplying color to the perforated cylinder,
substantially as described and shewn.
Dated this 25th day of September 1890.
CAPITAINE & VON HERTLING,
89, Chancery Lane, London, W.C., Agents for the Applicant.