Year: 1888

page_text: -Date of Application, 27th-July, 1888-
Specification Accepted, 7th Sept., 1888
We, CONSTANTIN KLINIK, machine maker, FRIEDRICH PINKOWSKI, merchant,
VALENTINE BONK, Gentleman, and JOHANN GLOS, saddler, all of Konigshutte %
Germany, do hereby declare the nature of this said invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement :-
This machine is intended to simplify the preparation of every description of leather,
for smoothing it and giving to the leather a suppleness which makes the same adapted,
once, for any further working.
at
The machine works in such a way that the leather, which is tightly connected at
one end to a cylinder, on the revolution of the same, is wound on to it, and bars or
roller bars, as they are called, press against the rolled leather, whilst these by a forced
motion on spiral dises by means of springs or elastic springs, or without them, are
pressed down against the cylinder and thus the leather. rubbing against these roller
bars becomes smoothed. When the whole piece of leather is rolled the cylinder is
then reversed. The encircling leather immediately surrounding the cylinder is then
loosened, by which it forms a large loop, the outer circumference of which, that had
been turned towards the cylinder, becomes the inner surface of the ring. This undu-
lating loop is repeated through the circles of the leather rings, one after another,
from ring to ring, till the whole of the leather is rewound in this direction. By these
means the inner surfaces of the leather rings rub against each other and the whole of
the leather thus becomes by the undulating motion smoothed and made supple.
The machine is fully explained in the accompanying drawings.
Figure 1 shows, partly in longitudinal section, partly in front view, the machine
from one side.
Figure 2 shows a longitudinal section of the back part of the machine.
Figure 3 is a cross section through the machine in the direction of the lines
of
Figure 2 and specially shows an upright frame with the corresponding guides for the
roller bars.
Figure 4 shows the connection of the spring bolts o with the roller bars d and the
arrangement of the same around the cylinder.

page_text: Figure 5 shows the lever hand sleeve N.
Figures 6 to 8 show a modified arrangement for the pressing of the roller bars
against the leather by means of the superimposed elastic and spring spirals.
Figure 6 shows this modification in longitudinal section. Figure 7 shows the guide
of the roller bars in standard B, front view. Figure 8 is a cross section through
the cylinder and the roller bars with the leather rolled round.
Figures 9 and 10 show the manner of working of the leather preparing machine in
the course of the two operations before described.
Figure 9 shows the position of the leather on the cylinder W when the same is
turned forward. Figure 10 shows the formation of the large loop on reversing the
cylinder.
In the two standards B, B, the cylinder W is arranged to revolve and can be rotated
by means of a winch handle. This cylinder W is nsed for winding round the leather
and is for this purpose furnished with a slot W' in which the end of the leather is
introduced. In this the end of the leather is fastened with wedges or pins a¹. The
roller bars d press against the leather, rolled round the cylinder W, the ends of which
are connected by spring bolts c which are arranged in the bushes L on the frame B, B,
so as to be moveable. On the spring bolts c lie the spiral springs F which press the
roller bars against the leather wound round the cylinder W. Of the roller bars d
the one, which is connected with the spring bolts c is moveable, while the one next
those supported by the spring bolts, is fast, so that one set of the roller bars can be
turned, whilst the other set presses without turning against the leather, and controls
the same on the revolving of the cylinder. By means of the pins m fixed to the spring
bolts c, which slides in the slots s of the stand frame B, B, the roller bars d are
guided, so that they can only press radially against the cylinder W. By means of the
winch handle K the cylinder W is set in motion, after the edge of the leather to he
dealt with, has been introduced and fixed in the slot W₁ of the cylinder. The roller
bars press against the leather and consequently the leather convolutions are pressed
with a certain resistance under and through the rollers, whereby the rough outside
surfaces are smoothed by friction against these rollers (Figure 9).
This
After the whole piece of leather is rolled up, the movement of the cylinder is.
reversed; the encircling ring or convolution next the cylinder W is loosened and is
reversed, whereby it forms a large loop, the outside circumference of which, that had
been turned towards the cylinder becomes the inner surface of the ring (see Figure 10).
This loop is repeated through the circles of the leather rings or convolutions one after
another from ring to ring until the whole of the leather is wound up. By this means.
the inner surfaces of the leather rings rub against each other and the whole of the
leather thus becomes by the undulating motion not only smoothed but made supple.
Whilst the encircling ring is being wound round next to the cylinder W and the
motion of the same continues, all the remaining leather rings being pressed together
by the roller bars d are prevented from taking part in the motion of same.
motion is only gradually communicated to the whole of the rings whereupon the
process is repeated. The leather thus prepared, after the completion of the process,
in consequence of the great pressure on it, by the rollers d by means of the spring F,
would be very difficult to unwind. A mechanism is therefore provided by which the
pressure of the springs can be diminished with ease and in the shortest time. This
means consists chiefly of two spiral discs, which except the two standard frames and
sleeves N on the cylinder B, are arranged to shift and on one side of them a spiral
shaped-groove of -any required height is introduced, which serves for the reception of
the pivots n on the pins m of the spring bolts c. The spiral discs are placed on the
sleeves N which are fitted loosely on the two journals E of the cylinder W, and
during the preparation of the leather by the roller bars d are without contact with
the pivots (or-pins) n (see Figure 1). If on the other hand the leather is already
prepared and is to be unwound from the cylinder W, both the discs S, by means of
levers h (Figures-1,-2-and-5,) are, pushed forward against the pins n, so that they press
against the latter. The discs are furnished -on their outer circumference with teeth,
which the teeth of the back wheels G gear into. The latter are furnished on one or

page_text: on both ends with handles K, fixed to the winch cylinders, in such a way, that on
turning one of the handles K, both the discs S are turned equally. When the disc S
presses against the pins n, the winch handle K and the disc S being turned until the
pin n is exactly opposite one of the undulating passages then both the discs S by the
action of the lever / will be pressed still further into the groove of the disc. If the
levers h are now, by means of the hook e on the bush k, made fast and the discs S
turned forwards, the pins n move, and with them the spring bolts c under the force of
the pressure of the spring F, outwards and the leather cylinder can then be easily
unrolled. By turning the disc forward the rollers d are again brought near the
cylinder then the action of the lever h by means of the hook e is freed, and the discs S
consequently by the springs r, are removed from the pins n whereby the connection
of the discs S is freed. By the action of the disc S moreover the pressure upon the
leather can be, at pleasure, increased or diminished. The same can also be used by
itself without employing the springs or other elastic medium. For smaller and
especially for finer sorts of leathers, we recommend instead of the spiral springs F,
strong elastic rings G (Figures 3 and 8) for pressing together the roller bars which,
for increasing their elasticity, are bound round with a spiralf of steel wire. The
rollers d are therefore carried by rectangular shaped supports m¹ with pins n'. The
standard B has four rectangular slots through which the shanks m¹ pass and are
guided. The discs S with their spiral grooves S¹ can also be used without the
assistance of the spiral springs F or elastic rubber rings.
As already stated half of the roller bars d which enclose the leather are reversible
the other half are fixed with the spring bolts c and their supports m².
The surfaces of the leathers slide off the fixed rollers and become smooth.
Having now particularly described and ascertained the nature of this said invention
and in what manner the same is to be performed we declare that what we
claim is :-
1. A leather preparing machine in which the roller bars thereof, [said bars being
provided either with spiral shaped grooves S¹ or are removed from the leather or
rendered self acting by means of springs F, or by means of rubber rings] are operated
in such a manner that the desired pressure (by means of an elastic medium) can be
increased or diminished at will or need, substantially as set forth.
2. The fastening of the leather in the slot W₁ of the cylinder W.
D
1
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T
1000
Dated this 20th day
1000
CONSTANTIN KLINIK.
FRIEDRICH PINKOWSKI.
VALENTINE BONK.
JOHANN GLOS.
By Cheesbrough & Royston,
Agents.