Improvements in Machinery or Apparatus for Dyeing Skins.
Year: 1894

page_text: Date of Application, 12th Oct., 1891
Comalada Onnrifination
LA 20th Lune 1805 Accented 27th July 1895
PROVISIONAL SPECIFICATION.
Improvements in Machinery or Apparatus for Dyeing Skins.
I, RICHARD ERGANG, of 209 Grosse Diedsdorferstrasse, Magdeburg, in the
Empire of Germany, Manufacturer, do hereby declare the nature of this invention
to be as follows:-
This invention relates to improvements in that class of machine or apparatus for
dyeing skins, in which the skin to be dyed is placed upon a rotating table, to the
centre of which the dyeing liquid is supplied and is thence caused by centrifugal
force to spread over the whole skin.
Hitherto the dyeing-liquid thrown off has been raised by a pump and poured out
upon the central portion of the rotating table. But this arrangement entails the
great disadvantage that various parts of the pump are liable to become quickly
rusted by the action of the very considerable moisture, which is always present in
dye-works, so that such parts are constantly needing repair.
Now this disadvantage is obviated according to the present invention by
employing the rotation produced in the dyeing-liquid by the rotating table, to
automatically return the dyeing liquid from the edge to the centre of the table.
In a skin-dyeing machine for this purpose according to this invention, the
rotating table upon which the skin to be dyed is placed, is made slightly convex
and is provided at its outer periphery with an upwardly and inwardly bent flange
adapted to collect the dyeing-liquid. The vertical shaft on which the table is
secured, is adapted to be raised and lowered by means of a lever and is provided
at its lower end with a friction cone which, when the table is in its lowered position,
rests in a correspondingly formed recess in a pulley that is rotated by means
of a rope.
To the framing of the machine there is fixed a bent bar or support on which an
arm is mounted so as to be capable of being turned aside in order to allow a skin
to be readily placed on and removed from the table. This arm is provided with
guide sleeves for the reception of a pipe, which is made of rubber or other suitable
flexible material. This pipe is normally situate at a small distance above the
table, and is arranged with one end terminating over the middle of the table and
the other in the channel formed by the aforesaid' flange and pointing in the
direction opposite to that of the rotation of the table caused by the rope. By
this arrangement, when the table is rotated, the dyeing-liquid that is situate in the
said channel, participating as it will in the rotation of the table will be caused to
pass through the flexible pipe and be discharged through the other end of the said
pipe onto the central portion of the table. In this way the dyeing-liquid will be
caused to travel continuously in a circuit.
When the machine is to be put cut of operation, the outer arm of the aforesaid
lever is depressed until a pawl pivoted to the framing of the machine catches in a
suitable notch in the lever: By pulling a chain attached to the pawl, the latter
can be again disengaged so as to allow the vertical shaft to descend and bring the
friction-cone into gear with the rope-pulley.
Dated this 19th dose of Databar 1804

page_text: :
.
Improvements in Machinery or Apparatus for Dyeing Skins.
I, RICHARD ERGANG, of 209, Grosse Diedsdorferstrasse Magdeburg, in the
Empire of Germany, Manufacturer, do hereby declare the nature of this invention
and in what manuer the same is to be performed to be particularly described
and ascertained in and by the following statement. :—
This invention relates to improvements in that class of machines or apparatus
used for dyeing skins, in which the skin to be dyed is placed upon a rotating table,
to the centre of which the dyeing liquid is supplied and is thence caused by
centrifugal force to spread over the whole skin.
Hitherto the dyeing-liquid thrown off has been raised by a pump and poured
out upon the central portion of the rotating table, but this arrangement entails the
great disadvantage that various parts of the pump are liable to become quickly
rusted by the action of the very considerable moisture, which is always present in
dye-works, so that such parts are constantly needing repair.
Now this disadvantage is obviated according to the present invention by
employing the rotation produced in the dyeing-liquid by the rotating table to
automatically return the dyeing-liquid from the edge to the centre of the table.
In the accompanying drawings,
Fig. 1 is a side elevation,
Fig. 2 a plan, and
Fig. 3 a vertical section at right angles to Fig. 1 of a skin-dyeing machine
according to this invention. The rotating table A upon which the skin to be dyed
is placed, is made slightly convex and is provided with an upwardly and inwardly
bent flange B adapted to collect the dyeing-liquid. The vertical shaft C on which
the table A is secured is adapted to be raised and lowered by means of a lever F,
and is provided with a friction cone D which, when the table is in its lowered
position, rests in a correspondingly formed recess in a pulley E, which is rotated
by means of a rope H.
To the framing of the machine there is fixed a bent bar or support J on which
an arm K is mounted so as to be capable of being turned aside in order to allow a
skin to be readily placed on and removed from the table. The arm K is provided
with guide-sleeves L for the reception of a pipe M, which is made of rubber or
other suitable flexible material. This pipe is normally situate at a small distance
above the table and is arranged with its end M terminating over the middle of the
table A and with its other end N terminating in the channel formed by the flange B
and pointing in the direction opposite to that indicated by the arrow in Fig. 2, in
which the table A is to be caused to rotate by the rope H.
By this arrangement, when the table is caused by means of the rope H to
revolve in the direction indicated by the arrow in Fig. 2, the dyeing-liquid that
is situate in the channel formed by the flange B, participating as it will in the
rotation of the table A, will be caused to pass through the flexible pipe M and
be discharged through the other end M' of the said pipe on to the central
portion of the table A. In this way the dyeing-liquid will be caused to travel
continuously in a circuit.
When a skin is to be laid upon the table A, the arm K that carries the flexible
pipe M is turned to one side, as indicated by dotted lines in Fig. 2.
When the machine is to be put out of operation, the outer arm of the lever F is
depressed until a pawl G pivotted to the frame of the machine catches in a
suitable notch in the lever F. By pulling a chain O, the pawl G can be again
disengaged, so as to allow the shaft C to descend and bring the friction-cone D
into gear with the rope-pulley E.

page_text: 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. A centrifugal skin-dyeing machine, having a rotatory table A provided with
an upwardly and inwardly bent flange B to form a channel, and a flexible pipe M
arranged above the table in such a manner that when the table is rotated dyeing-
liquid collecting in the said channel and participating in the rotary motion of
the said table will be caused to pass through the flexible pipe and be discharged
over the centre of the table for re-use so that the dyeing-liquid will travel
continuously in a circuit.
2. My improved machine or apparatus for dyeing skins or the like constructed,
arranged and operating as herein before described with reference to and shown in
the accompanying drawings