Improvements in Apparatus for Roasting, Cooling, Coarse Grinding 'Nibbing," Mixing, and Separating Coffee, Chicory, and other Substances.
Year: 1894

page_text: Date of Application, 25th Jan., 1891
Complete Specification Left, 25th Oct.. 189 --Accepted, 25th Jan., 1895
66
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Roasting, Cooling, Coarse Grinding
'Nibbing," Mixing, and Separating Coffee, Chicory, and other
Substances.
ог
BEESTON TUPHOLME of 2 Roberts Place, Falmouth Road London S.E.
Engineer, do hereby declare the nature of this invention to be as follows :-
For this purpose I employ one or more cylinders erected in a suitable position
upon a stand or pedestal, and to enable this said cylinder or cylinders to be readily
lifted off whilst in motion. I have a central shaft or axis, one end of which may
enter the centre or boss of a pulley driven by chain or other belts. In order to
carry away the fumes and smoke from the contents of this said cylinder I have the
aforesaid axis tubular and communicating with an exhaust air propellor, or the cold
air. If the cylinder has an internal flame (as described in my previous Specification
numbered 4970 and dated 4th April 1887) I insert in the bood or jacket, a tube,
which is also in communication with an exhaust fan or the open air. In order to.
cool the roasted coffee or other substances I employ an ordinary wire bottom
cooler and air propellor which may be fixed inside the aforesaid stand or pedestal
and the exhausted fumes blown out through the bottom or side of this said pedestal
and thence by a suitable flue.
In order to thoroughly mix the various proportions of coffee with chicory or
other articles (previous to grinding) I pass it through my patent mixer (as
described in my previous Specification numbered 10320 and dated the 16th July
1888) and from this mixer it slides into a suitable receiver. And in order to
separate the coffee and chicory from various foreign substances (previous to:
grinding) such as nails stones etc. I employ a fan which may be driven from the
central mill shaft. The said fan exhausts or sucks up the coffee into the hopper of
For the purpose of
the mill, leaving the heavier foreign matter at the bottom.
rapidly and suitably nibbing and grinding the chicory etc. I employ a mill having a
central revolving shaft upon which I mount or fix a grinding or disc ring having
suitable coarse or fine teeth, a second disc or grinding ring being fixed vertically to
the frame of mill and remaining stationery.
The material to be nibbed or ground enters at the centre and when ground
passes out at the periphery of the said disc rings. To prevent the material whilst
being ground from being thrown out I have a suitable case with removeable lid at
the top, the granuals falling through at the bottom into a receiver. By means of
a suitable adjusting device on the revolving shaft I regulate the disc rings to grind
coarse or fine, and in order to facilitate the. grinding I have a duplicate mill
abutting the aforesaid 'mill, the disc rings being driven by the same but extended
central shaft.
Under, and fixed in the framework of this mill I have one or more oscillating
sieves driven by crank or eccentric motion from the central mill shaft. From this
said sieve the granulated substances fall into a receiver below.
Dated this 24th day of January 1894.

page_text: Improvements in Apparatus for Roasting, Cooling, Coarse Grinding
or “Nibbing,” Mixing, and Separating Coffee, Chicory, and other
Substances.
BEESTON TUPHOLME of 2 Roberts Place, Falmouth Road, London, S.E.,
Engineer, 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:—
For this purpose I employ one or more cylinders A. A Figs. 1 to 5 erected in a
suitable position (but preferably as shown in drawing Figs. 1 and 4) upon a stand or
pedestal F, and to enable the said cylinder or cylinders to be readily lifted off
whilst in motion I have a central shaft or axis B one end of which being of suitable
shape or forked (as shown in Fig. 3) enters the centre or boss of the pulley C or
sprocket wheel of corresponding shape driven by chain or other belts. In the'
arrangement shown in Fig. 4 the driving chain being horizontal passes over a
suitable sprocket wheel C. This machine can be driven at either end by
lengthening the axis of one of the sprocket wheels to admit of pulley (as shown)
and so drive the series of cylinders, this said chain belt may be entirely concealed
in a suitable case as shown in Figs. 3 and 4. To polish the coffee during the
process of roasting and to increase the heating surface of the cylinders I have
them fluted or corrugated as shown in Figs. 5 and 5 (in section) and in order to
obtain cylinders of extreme lightness I make them of aluminium.
'
In order to cool the roasted coffee or other substances 1 employ an ordinary
wire bottom cooler D and air propeller E which is fixed inside the aforesaid stand
or pedestal F and the exhausted fumes blown out through the bottom or side of
this said pedestal as shown at G and thence by a suitable flue.
In order to thoroughly mix the various proportions of coffee with chicory or
other articles (previous to grinding) 1 pass it through my patent mixer H Fig. 6
(as described in my previous Specification numbered 10320 and dated the
16th July 1888) and from this mixer it slides into a suitable receiver I and in
order to separate the coffee and chicory from various foreign substances (previous
to grinding) such as nails, stones etc. I employ an exhaust fan J which may be
driven from the central mill shaft, as shown. The said fan J exhausts or sucks
up the coffee from the receiver I and propels it forward, as indicated by the
several arrows, into the hopper K of the mill L leaving the heavier foreign matter
at the bottom of receiver I whence it can be removed through slide M.
•
For the purpose of rapidly and suitably nibbing and grinding the chicory etc. I'
employ a mill L having a central revolving shaft N upon which I mount or fix a
grinding or disc ring O having suitable coarse or fine teeth as shown in drawing
Figs. 8 and 9. In consequence of the concaved surface of the said grinding rings
(which increases their durability) and the large and deep teeth leading from the
centre and converging into a number of small and shallow teeth at the periphery
I am enabled to produce a more even grade, or granulate the various substances
rather than pulverize into powder, a second disc or grinding ring P being fixed
vertically on to the frame of the mill, so that the cutting surfaces of the revolving
and fixed discs are face to face.
The material to be nibbed or ground enters at the centre L and when ground
passes out at the periphery of the said disc rings O and P.. To prevent the
material whilst being ground from being thrown out I have a suitable case Q with
removeable lid at the top, the granules falling through at the bottom into a
receiver S, or on to sieve R, as shown, and from thence into receiver S.
1

page_text: By means of a suitable adjusting device, consisting of a handwheel and screw T
(Fig. 7) which raises or lowers the wedge U which being forked to span the shaft
takes on both sides of the projections provided on the loose collar thus forcing the
loose collar V against the boss of the face plate W which is fixed to the shaft. N
upon which is secured the revolving grinding ring O and to prevent undue friction
I have one or more anti-friction rings X with necessary lubricating device, as
shown in dotted lines, with suitable cover or cap, between the loose collar V and
the boss of the face plate W.
Under, and fixed in the framework of this mill, I have one or more oscillating
sieves R_Fig. 6 driven by a crank or eccentric motion Y from the central mill
shaft. From this said sieve the granulated substances fall into a receiver S
below.
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 general arrangement of means or apparatus for roasting, mixing, grinding,
sifting and preparing coffee, chicory and other material substantially as herein
shown and described.
2. The whole of the machinery worked and driven in combination or separately.
3. The cylinders of coffee roasters fluted or corrugated used in combination with
other machinery as described, and as shown in accompanying drawing Fig. 5
and 5ª.
4. The end of central shaft of moveable coffee roasting cylinder engaging in the
boss of pulley or sprocket wheel driven by belt, the belts and pulleys concealed in a
case in the framework of machine as shown in drawing Fig. 3.
5. The convexed face of grinding discs, used in combination with other
machinery as described.
6. The method of adjustment with screw wedge and loose collars, used in
combination with other machinery as described.
7. The combination of exhaust fan and receiver for feeding coffee, chicory and
other substances into the mill or other receptacle during the process of grinding
leaving behind any substance such as nails and stones.
8. The arrangement of oscillating sieves under coffee-mills.
Dated this 25th day of October 1894
B. TUPHOLME.