Year: 1887

page_text: Date of Application, 6th Sept., 1887
Complete Specification Left, 4th July, 1888
Complete Specification Accepted, 10th Aug., 1888
1, LINDVED PETERSEN of Copenhagen in the Kingdom of Denmark, Manufacturer,
do hereby declare the nature of this invention to be as follows:-
The object of this invention is an apparatus for roasting and cooling coffee or the
like, and its novelty consists in the arrangement for removing in a rational manner
the smoke and vapours incidental to such process.
The improved apparatus consists essentially of a roasting drum, a space for the
firing, and a cooling chamber arranged in this order below one another, a free space
being left at the bottom for removing the finished material.
The roasting drum, adapted to be revolved by a handle, contains suitable ribs and
wings for agitating the roasting material, and its rear rotating axle forms part of a
perforated tube extending some distance into the drum and serving to lead the vapours
into a flue connected with the fire, while the shells or solid waste of the roasting
material are prevented from escaping into the said flue by a suitably arranged
perforated screen, whence it is subsequently removed.-The fire box is provided with
a detachable front grating and open above so as to allow the heat to play
advantageously about the drum, the smoke escaping through the aforementioned
screen into the flue.-When the coffee or other material is sufficiently roasted, which
can be ascertained by any suitable device for taking out a sample, the fire box, which
is displaceable, is replaced by a funnel, and the roasted material is introduced by
means of the latter through a sliding door provided in the drum, into the cooling
chamber. While the fire box is removed from the drum, its connection with the flue
is kept up through a conveniently arranged pipe.-If gas is employed in lieu of other
fuel, the feed pipe may be telescopically or otherwise arranged so as to give room to
the funnel, when the material is transmitted to the cooling chamber. The cooling
apparatus contained in said chamber is actuated by means of a handle, and its sides
consist of wire-netting or are perforated for the escape of the vapour into the flue,
The
with which the cooling chamber is also connected through a perforated screen.
cooling apparatus is furnished below with a slide door or trap for removing the
finished material.
HERBERT & Co.,
Agents to Applicant,

page_text: Improvements in Apparatus for Roasting Coffee or other similar
Matters.
I LINDVED PETERSEN of Copenhagen in the Kingdom of Denmark, Manufacturer
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
The object of this invention is to construct a convenient apparatus for roasting
coffee and other matters and cooling or permitting same to cool when roasted, and
the principal improvement consists in combining in one machine the apparatus
necessary for these purposes so that they may be performed from outside without
causing the coffee to leave the machine and without opening the latter, due provision
being also made that the vapours from the coffee are carried off and the gases from
the fire removed at all times without coming in contact with the coffee either during
the roasting or cooling or during the transferring of the coffee from the roasting drum
to the cooling chamber.
The accompanying drawings show the improved machine. Fig. 1 being a vertical
section thereof Fig. 2 a vertical cross section and Figs. 3, 4 and 5 enlarged views of
certain parts showing details of the construction.
I provide in the upper part of a suitable casing a rotary roasting drum having a
sliding door therein and under the latter a transversely movable fire box having beside
it a hopper so that either the fire box or the hopper may be brought directly under
the drum. Below the fire box and hopper I place a suitable receiver having means
for stirring the coffee during cooling.
Referring to the drawings A is a suitable casing having journalled in its upper part
the roasting cylinder or drum E and having a removable cover or lid by which coffee
may be put in the drum. The drum has a sliding door I guided to move longitudinally
on the drum and through which the drum may be filled or emptied. The trunnions
or shafts of the drum are formed in the one case of a perforated pipe M extending
into the drum and passing through the exterior of the casing A into the flue D and in
the other case of a hollow rotary shaft N terminating in a hand crank O for
turning the drum and having a solid rod P extending through it into the drum and
terminating therein in a spoon like end Q adapted to receive and take out some of the
roasted coffee beans for ascertaining the progress of the roasting.
Under the drum E on cross rails fixed in the casing is mounted the fire box F
having on the side thereof a hopper G. The fire box and hopper may be moved by a
rod R so as to bring the fire box under the drum when roasting and then move the
same aside and bring the hopper under the drum when the coffee is to be emptied into
the cooling chamber. The latter is arranged as a receptacle H in the base of the
apparatus and is preferably removable. It is open above and provided with perforated

page_text: ends and a suitable rotary mixing or stirring device. The casing A is provided with
the two openings be leading into the flue D, the opening 6 to carry off the vapours
from the cooling coffee, the opening e for the gases from the fire.
On the front end end of the door I is a hook d (Fig. 5) and in the casing a bar L
in one with the handle K and pivoted on a pin o to a plate n extending across the
front of the casing and carrying the slide rods m m guided in slots or tubes p in the
casing so that the plate n may be drawn in a direction away therefrom.
The bar L has a hole L' adapted to engage with the hook d so that the door I may
be drawn out thereby when the drum is in such a position that the door is the lowest
part thereof. A slot is provided in the casing for passage of the door I.
It is preferable also to arrange a stop plate as q on the fire box to prevent the
opening of the door I until the fire box is removed and the hopper is brought below
the drum D.
There should be also provided under the drum the two lateral plates rr to guide
the heated gases from the fire around the drum when fire box is thereunder and away
therefrom when the firebox is moved to the side.
The fire may be stoked through a suitable door in the casing A.
If a gas fire is used it should be stationary and be arranged on each side of a
stationary central hopper.
There is then placed a partition across the upper part of the chamber H.
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 :-
In apparatus for roasting coffee and other matters.
1. The combination of a roasting chamber having a slide door thereunder, with a
transversely movable fire box or furnace with a hopper at the side thereof.
2. The combination in a casing of a rotary drum E having slide door I a transversely
movable fire box F thereunder a hopper at the side of said fire box and a cooling
chamber H substantially as set forth.
3. The combination in a casing with a rotary drum of a slide door I therein a
hook d on said door and a folding link adapted when desired to engage with said hook
when the door is in its lowest position a plate n supporting said hook and rods m or
equivalents for guiding said plate substantially as set forth.
4. The machine hereinbefore described comprising in combination a casing A
flue D, drum E, perforated axle M, tubular driving shaft N, spoon rod PQ, movable
fire box F, with hopper G thereon and chamber H substantially as and for the
purposes set forth.
1000