An Improved Machine for Pulping Coffee.
Year: 1891

page_text: [Communicated from abroad by ROBERT OKRASSA, of Portal, in the Republic of
Guatemala, Central America.]
An Improved Machine for Pulping Coffee.
I, JOHN WILTON GORDON Engineer, Dashwood House, 9 New Broad Street,
London 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 has reference to an improved machine for pulping coffee.
The invention consists of a vertical shaft mounted on suitable framing and
provided with one or more revolving discs, each disc is provided with one or more
channels or grooves.
An annular ring is fixed to the framing above this disc and
has its underside covered with stabbed copper or other metal. A suitable hopper
is fitted above the annular ring.
The accompanying drawing represents a machine constructed according to this
invention.
Fig. 1. represents an elevation partly in section.
Fig. 2. represents a plan of the disc.
Fig. 3. represents an enlarged section of the channel or groove on the line
Similar letters of reference indicate corresponding parts in these figures.
Y. Y.
A is a vertical shaft on which is fitted à centre having arms and paddles B
working in a hopper C.
On the shaft A is also fitted the revolving disc or discs E. The hopper C rests
upon an annular ring F which is fixed to projections on the standards.
The underside of F is covered with stabbed copper or other metal. M is a trough
round the disc E.
G are scrapers attached to the circumference of the disc E.
Pis an outlet for the pulped berries from the trough M.
Q is a guard over the footstep.
R is a nut on the footstep for raising or lowering the shaft A.
Hare channels or grooves in the disc E.
N are open spaces between the channels H.
The action of the machine is as follows:-
The coffee berries are fed into the hopper C along with a stream of water, where
they are stirred up by the revolving paddles B and fall out at the centre opening D
onto the centre of the revolving dise E from whence they pass to the bottom of
the channels H and are forced along the channels by the centrifugal action caused
by the rotation of the disc E.
As the coffee berries pass along the channels which gradually lessen in depth
hey are brought in contact with the stabbed copper on the underside of the
annular ring F.
The pulp is removed by the projections on the copper and falls down through
he open spaces N between the channels, while the berries are thrown into the
ircular trough M clean and free from pulp.
The scrapers attached to the circumference of the revolving disc discharge the
berries at P.
The shaft A is capable of being adjusted by the nut on the footstep, so that
he disc just runs clear of the copper covering.

page_text: 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. The combination of parts forming an improved machine for pulping coffee as
hereinbefore described and represented in the accompanying drawing.
2. I claim specially the form of the revolving disc with its channels or grooves
and arranged all substantially as and for the purposes herein before described.
Dated this 6th day of April 1891.
JOHN W. GORDON.