IMPROVEMENTS IN KNIFE CLEANING APPARATUS
Year: 1884

page_text: We WILHELM FABIAN Merchant and ADALBERT TELLER Merchant both of
Hamburg in the Empire of Germany do hereby declare the nature of our said
invention for "IMPROVEMENTS IN KNIFE CLEANING APPARATUS" to be as follows:-.
This machine consists in its essential parts of two discs of peculiar shape of soft
vulcanized india rubber which discs are pressed together and rotated against each
other whilst the knife to be cleaned is passed through the rollers or discs in a
manner that will be described hereafter.
The india-rubber discs are constructed in such manner that they easily flatten off
whilst pressed together and touch the knife at its full width in consequence of
which the polishing of its full surface is completed by passing it once through the'
rollers or discs.
In carrying the invention into effect:
The two india rubber discs rest with their shafts in bearings of the machine-.
stand in which they can, in horizontal direction, move within certain limits whilst
by a handle, intermediate shaft and gearing they can be rotated against each other.
A knife placed between the discs will consequently by the latter be touched at
both sides as soon as the discs are brought close together. By turning an eccentric
the discs can be pressed together.
The original shape of the discs is made with one or more concave groove or
grooves at its outer circumference and concentric grooves at the sides near the
outer edge allowing the material to be flattened off to a broad plane whilst the
discs are pressed together without giving' much resistance to the rotating trans-
mission and without tensioning the material in any damaging manner, At the line
of contact the two disc are flattened so as to form a tangent-plane of about the
width of the knife, whilst the material from the circumference of the discs moves
towards the concentric grooves.
To prevent the edges of the discs from being pulled too far outward by the knife
when same is shifted sideways side plates are applied that nearly cover the sides of
the discs: The knife rests with the back on rollers or on a smooth plane or
projection of the stand. The discs are at the circumference covered by strips of
leather and polishing-powder or other polishing-material is applied which may be
strewn by hand or fall onto the discs from a hopper on top of the discs or the discs '
may partly revolve within small troughs of the casing furnished with polishing-
material; strips of leather or metal being applied to strip off all superfluous
powder.
:
'

page_text: KNIFE.
We WILHELM FABIAN and ADALBERT TELLER both of Hamburg Germany do
hereby declare the nature of our invention for "IMPROVEMENTS IN
CLEANING APPARATUS and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:—
"
This machine consists in its essential parts of two discs of peculiar shape of soft
vulcanized india rubber, which discs are pressed together and rotated against each¸
other, whilst the knife to be cleaned is passed through the rollers or discs in a
manner that will be described hereafter.
The india rubber discs are constructed in such manner that they easily flatten
out whilst pressed together and touch the knife at its full width, in consequence of
which the polishing of its full surface is completed by passing it once through the
rollers or discs.
The invention is illustrated by the accompanying sheet of drawings. The two
india-rubber discs P and S, each of which is formed essentially in accordance with
disc P shown in Figs 7 and 8, rest with their shafts a, a¹, in bearings of the
machine-stand in which they can in horizontal direction slide within certain limits,
whilst by the handle k, intermediate shaft 6 and gearing m, n, they can be rotated
against each other. A knife M placed between the discs, will consequently be in
contact with said discs at both sides as soon as the discs are brought close together.
By turning an eccentric e out of its position shown in Fig 1 into that shown in
Fig 5 the discs can be pressed together, the arms d and d¹ which catch behind.
shafts a and a' are in that case brought closer together as will be understood by
reference to the drawings.
At
The-original-shape of the discs P and S is with one or more concave groove or
grooves h² at its outer circumference and concentric grooves h and h¹ at the sides
near the outer edge, allowing the material to be flattened out to a broad plane
whilst the discs are pressed together without giving much resistance to the rotating
transmission and without tensioning the material in any damaging manner.
the line of contact, the two discs are flattened so as to form a tangent-plane of
about the width of the knife, similar to that shown by Figs 4, 5 and 6 of the
drawings, whilst the material from the circumference of the discs moves towards
the grooves h, h¹.
.
To prevent the edges of the discs from being pulled too far outward by the knife
when same is shifted sideways, side plates g and g₁ are applied that nearly cover
the sides of the discs. The knife rests with the back on rollers v, v₁ or on a smooth,
plane or projection of the stand. The discs are at the. circumference covered by
strips of leather l'and polishing powder, or other polishing-material is applied which
may be strewn by hand or fall onto the discs from a hopper on top of the discs, or
the discs may partly revolve within small troughs t, t' of the casing furnished with
polishing-material, strips of leather or metal z, z Fig 6 being applied to strip off all.
superfluous powder.

page_text: Having now particularly described and ascertained the nature of our said
Invention, and in what manner the same is to be performed, we declare that what
we claim is
Firstly. A knife cleaning machine in which the knife that has to be cleaned, is
brought between a pair of revolving discs, formed of soft rubber or other suitable
elastic material which discs are furnished with grooves at the circumference and at.
their sides for the purpose and in the manner as herein described and shown by
the drawings.
Secondly. The combination of cleaning discs as described in Claim 1 with side
plates g, g that reach nearly up to the outer edges of the disc for the purpose as
herein described and shown by the drawings.