Improvements in Coffee Pulping Machines.
Year: 1895

page_text: Date of Application, 5th Sept., 1895
Complete Specification Left, 1st May, 1896-Accepted. 1st Aug., 1896
[Communicated from abroad by ALFREDA D'COSTA GOMEZ, of Bucaramanga,
United States of Colombia, Merchant.]
Improvements in Coffee Pulping Machines.
I, OLIVER IMRAY, of No. 28 Southampton Buildings, Chancery Lane, in the
County of London, Chartered Patent Agent, do hereby declare the nature of this
invention to be as follows:-
This invention relates to machines for pulping coffee berries so as to separate
the pulp from the beans, by passing the berries along with a stream of water
between a roughened surface moving in one direction and a parallel smooth surface
moving more slowly in an opposite direction, the berries thus disintegrated having the
pulp and beans separated by passing on opposite sides of a knife interposed between
the disintegrating surfaces.
The roughened surface may be the periphery of a cylinder which revolves nearly
in contact with a smaller cylinder parallel to it, or the roughened surface may be
that of a disc revolving between and nearly in contact with a pair of cylinders,
having their axes parallel with the faces of the disc.
When the roughened surface is that of a cylinder, the smaller cylinder is driven
from it by chain gear so that it revolves in the same direction, the part of its
surface which is presented towards the roughened cylinder thus moving in the
opposite direction. When a disc is employed, the cylinders on each side of it are
driven from it by bevil gear in such a direction that those parts of their surfaces
which are presented towards the disc move oppositely to the disc.
The surface of the cylinder or disc may be roughened by grooving, or may
be covered by a sheet of metal studded with projecting buttons which may be
grooved.
Dated this 5th day of September 1895.
ABEL & IMKAI,
Agents for the Applicant.
Improvements in Coffee Pulping Machines.
I, OLIVER IMRAY, of No. 28 Southampton Buildings, Chancery Lane, in the
County of London, Chartered Patent Agent, do hereby declare the nature of
this invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement:-
This invention relates to machines for pulping coffee berries so as to separate the
pulp from the beans, by passing the berries along with a stream of water between
a roughened surface moving in one direction and a parallel smooth surface moving
more slowly in an opposite direction, the berries thus disintegrated having the
pulp and beans separated by passing on opposite sides of a knife interposed between
the disintegrating surfaces.
The roughened surface may be the periphery of a cylinder which revolves nearly
in contact with a smaller cylinder parallel to it, or the roughened surface may be

page_text: that of a disc revolving between and nearly in contact with a pair of cylinders,
having their axes parallel with the faces of the disc.
When the roughened surface is that of a cylinder, the smaller cylinder is driven
from it by chain gear so that it revolves in the same direction, the part of its
surface which is presented towards the roughened cylinder thus moving in the
opposite direction. When a disc is employed, the cylinders on each side of it are
driven from it by bevil gear in such a direction that those parts of their surfaces
which are presented towards the disc move oppositely to the disc.
The surface of the cylinder or disc may be roughened by grooving, or may be
covered by a sheet of metal studded with projecting buttons which may be
grooved.
Fig. 1 of the accompanying drawings is a side view and Fig. 2 is an end view of
a machine in which the disin egration is effected between a pair of cylinders a part
section through which is shewn in Fig. 3. The machine in which a disc and a pair
of cylinders are employed is shewn in perspective in Fig. 4, in sectional pla i in
Fig. 5 and in vertical section in Fig. 6.
Referring first to Figs. 1, 2 and 3; on a suitable framing H are mounted in
bearings the parallel axes of two cylinders, a larger B, and a smaller B₁ the latter
being adjustable nearer to or farther from the former, and being driven from it
by chain gear so as to revolve in the same direction at a slower speed, the surfaces
of the two cylinders which are near each other being thus caused to move in
opposite direction as indicated by the arrows in Fig. 3.
The axis of the cylinder B may be driven manually by a winch handle M or it
might be by any suitable motor, and it may carry a fly wheel V. The surface of
the cylinder B is fluted, longitudinally or obliquely grooved or otherwise
roughened. A convenient construction is to cover the periphery of the cylinder
with a sheet of metal studded with projecting buttons which may have grooves
parallel to the axis of the cylinder. Just under the bite of the cylinders B B is
fixed a separating knife C its upper edge being level with the axis of B, and a
little below the axis of B' which is somewhat higher than the axis of B. Coffee
berries supplied along with water to a hopper Å descend in a stream between B
and B where disintegration is effected, the pulp being carried down by the
surface of B on the one side of the knife C while the beans descend on the
other side.
In the modified form of machine shewn in Figs. 4, 5 and 6 a roughened disc D
is substituted for the cylinder B, and two cylinders R, one on cach side of D,
driven by bevil gear E take the place of the cylinder B'. The knives C
separate the pulp which descends by a shoot P from the beans which pass away by
shoots S:
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
1. A machine for pulping coffee, wherein the berries are disintegrated by being
caused to pass between the roughened surface of a revolving cylinder or disc and
the oppositely moving parallel surface of a cylinder, the pulp being then
separated from the beans by a knife interposed between the two parallel
surfaces.
2. A machine for pulping coffee constructed and operating substantially as
described with reference to Figs. 1, 2 and 3.
3. A modified machine for pulping coffee constructed and operating substantially
as described with reference to Figs. 4, 5 and 6.
Dated this 1st day of Mar 1806
ABEL & IMRAY,
Agents for the Applicant.