Improvements in Machines for Mixing Ground Coffees and other Substances.
Year: 1889

page_text: Date of Application, 7th Dec., 1889-Accepted, 11th Jan., 1890
COMPLETE SPECIFICATION.
Improvements in Machines for Mixing Ground Coffees and other
Substances.
A communication to me from abroad by OTTO VOIGT, of Lübeck, in the Empire of
Germany, Merchant.
I, EDMUND EDWARDS, of the firm of Edwards and Co.; Patent Agents and
Engineers, of 35, Southampton Buildings, Chancery Lane, in the County of Middlesex,
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 and accompanying Drawing (that is to say) :-
Mixing machines as ordinarily heretofore used are not well adapted for the
intimate mixture of various kinds of ground coffee, or its substitute, spices, rice, and
other substances of the like kind, and the present invention has for its object an
improved machine by which such substances can be easily and thoroughly mixed.
In the accompanying drawing which is in illustration of the invention, figures 1
and 2 are side and front views of the improved mixing machine. Figures 3 and 4
are transverse and longitudinal sections through the same. Figure 5 is a view of
the filling hopper or funnel, Figure 6 a view of the moveable side plate. Figure 7
views of the different mixing plates or shovels, Figure 8 a side view of the machine
shewing the arrangement for entying the cylinder or drum, Figure 9 a section on
a larger scale of the central strip forming a groove to receive the moveable side
plates. Figures 10 and 11 a front view and section of the centre of one end of the
drum.
The machine consists of a cylinder or drum B of sheet metal upon an axle
tarning in bearings in the frame A, one end of the drum being fixed and the other
moveable and a sliding door C being fitted upon the circumference. The fixed end of
the drum is attached to a centre keyed upon the axle by means of an angle iron fixed
to the periphery of the drum, and upon the inner surface of the plate D are attached
the edges of the variously shaped mixing plates or shovels F G H (figure 7) their
opposite edges being attached to the radial iron bars K carried by the centre J.
The mixing plates described do not reach quite to the circumference or to the
centre of the drum so that the material to be mixed can pass both round and
through them.
The other end of the drum consists of two halves of the shape shewn in figure 6
which are attached by thumb screws to an angle iron fixed inside the circumference
of the drum their centres being carried in a recess or groove formed as shewn in
figures 9, 10, and 11 by an outer plate of suitable shape N bolted to the centre which
is keyed upon the shaft with the intervention of a narrow strip, against which the
edges of the semicircular plates rest. These moveable side plates are provided with
handles and it is only necessary to unscrew the thumbscrews L in order to take off
both of the moveable halves and leave the inside of the drum perfectly accessible
for cleaning or other purposes.
In order to empty the drum a box O is arranged under the drum with two sloping
boards P and the sliding door C being then opened the contents of the drum fall into
the box.
The drum may be driven by two handles as shewn in figure 2 or by steam or other
onveniant nower

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. A machine for mixing ground coffee, and other substances, consisting of a
drum B carried upon the frame A, and baving the variously shaped mixing plates
or shovels F, G, H, fixed inside it so that the substances to be mixed must pass
round and through them, substantially as described and shewn.
2. In the machine claimed in claim 1 the arrangement of the centre J with the
plate N forming recesses in which the two halves of the moveable end plate fit
their circumference being held by the thumb screws L so that they can readily
be removed and replaced substantially as described and shewn.
Dated this 7th day of December 1889
EDWARDS & Co.,
Agents for the Applicant.