IMPROVEMENTS IN APPARATUS FOR ROASTING COFFEE, WHICH IMPROVEMENTS ARE ALSO APPLICABLE TO THE ROASTING OF COCOA AND OTHER VEGETABLE MATTERS."
Year: 1861

page_text: LETTERS PATENT to William Müller, of 62, High Holborn, in the County
of Middlesex, Artists' Colorman, for the Invention of "IMPROVEMENTS IN
APPARATUS FOR ROASTING COFFEE, WHICH IMPROVEMENTS ARE ALSO APPLICABLE
TO THE ROASTING OF COCOA AND OTHER VEGETABLE MATTERS."
PROVISIONAL SPECIFICATION left by the said William Müller at the
Office of the Commissioners of Patents, with his Petition, on the
2nd September 1861.
I, WILLIAM MÜLLER, of 62, High Holborn, in the County of Middlesex,
Artists' Colorman, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN APPARATUS FOR ROASTING COFFEE, WHICH IMPROVEMENTS ARE
ALSO APPLICABLE TO THE ROASTING OF COCOA AND OTHER VEGETABLE MATTERS," to
be as follows:-
Within a vessel, by preference circular, and adapted to be placed on an
ordinary fire, I apply a vertical axis with arms or vanes to keep the contents
in motion whilst over the fire. To this vessel I apply a moveable cover and a
moveable handle, to give motion to the axis, and afford facility for the removal
of the cover besides a handle or handles by which to hold the vessel on the
fire during the roasting. A vessel thus arranged is especially adapted for
domestic use.

page_text: c
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Müller in the Great Seal Patent Office on the
28th February 1862.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
MÜLLER, of 62, High Holborn, in the County of Middlesex, Artists' Colorman,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Second day of September, in the year of our Lord
One thousand eight hundred and sixty-one, in the twenty-fifth year of Her
reign, did, for Herself, er heirs and successors, give and grant unto me, the
said William Müller, ler special licence that I, the said William Müller,
my executors, administrators, and assigns, or such others as I, the said
William Müller, my exccutors, administrators, and assigns, should at any
time agree with, and no others, from time to time and at all times there-
after during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for "IMPROVE-
MENTS IN APPARATUS FOR ROASTING COFFEE, WHICH IMPROVELIENTS ARE ALSO
APPLICABLE TO THE ROASTING OF COCOA AND OTHER VEGETABLE MATTERS," upon the
condition (amongst others) that I, the said William Müller, my executors
or administrators, by an instrument in writing under my, or their, or one of
their hands and seals, should particularly describe and ascertain the nature
of the said Invention, and in what manner the same was to be performed,
and cause the same to be filed in the Great Seal Patent Office within
six calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said William Müller, do hereby declare the
nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof, that is to say:-
Within a vessel, by preference circular, and adapted to be placed on an
ordiuary fire, I apply a vertical axis with arms or vanes to keep the contents
in motion whilst over the fire. To this vessel I apply a moveable cover and a
moveable handle to give motion to the axis and afford facility for the removal
of the cover, besides a handle or handles by which to hold the vessel on the
fire during the roasting. A vessel thus arranged is especially adapted for
domestic use.
But that the nature of the Invention may be fully understood, I will proceed

page_text: Figure 1 shows an edge view; Figure 2, a plan; and Figure 3, a section of
apparatus constructed according to my Invention.
Figures 4, 5, 6, and 7, show some of the parts separately.
a, a, is the vessel, in which are placed the coffee berries, cocoa, or other
vegetable matters to be roasted; this vessel is provided with a handle a', by
which it may be held or steadied over an ordinary fire, or it may be over jets
of gas; b, is the lid of the vessel a, and it is capable of being readily removed
and replaced as desired, as the lid of an ordinary saucepan or other vessel.
Through the cover 6 passes the axis c, upon which are formed arms c¹, c', c¹,
by which, when motion is given thereto by the handle c² fixed on the upper
end of the axis c, the coffee berries, cocoa, or other vegetable matter may be
kept in motion. These arms c¹ are shown to radiate from the axis c, but they
may be of other form, and in place of their sides or surfaces being vertical or
at right angles to the bottom of the vessel a, they may be inclined thereto.
The handle c² is shown fixed to the axis c, so that the parts c, c', c², are removed
with the cover b, but this may be varied by the handle being loose. The lower
part of the axis c is formed as a socket to embrace a pin a³ projecting upwards
from the bottom of the vessel a.
Sometimes I employ an additional handle d, shown by Figure 8, to loop on
to the handle for working it, and thereby keep the hand farther from the
heat.
Having thus described the nature of my said Invention and the means I
have found to answer in carrying the same into effect, I would have it
understood that I do not confine myself to the precise details shown, as these
may be varied without departing from the peculiar character of the Invention.
In witness whereof, I, the said William Müller, have hereunto set my
hand and seal, this Twenty-eighth day of February, in the year of
of our Lord One thousand eight hundred and sixty-two.
W. MULLER. (L.8.)