Improvements in and in Apparatus for Condensing the Vapours Distilled Off from Coffee in the Operation of Roasting.
Year: 1890

page_text: Date of Application, 9th Jan., 1890
Complete Specification Left, 10th Nov., 1890-Accepted, 13th Dec., 1890
PROVISIONAL.
TION.
Improvements in and in Apparatus for Condensing the Vapours
Distilled Off from Coffee in the Operation of Roasting.
I, ABRAHAM MARTIN, of 177, Aston Lane, Birmingham, in the County of Warwick,
Engineer, do hereby declare the nature of this invention to be as follows:-
:-
My invention relates to the condensation of the vapors distilled off from coffee in
the operation of roasting; and has for its object to effect the fractional condensation
and separation of the different constituent products, in order that those products
which would prejudicially affect the flavor of the coffee may be eliminated, whilst
those only which contribute to the palatable flavor and aroma of the coffee are
retained for the purpose of being returned to the roasted coffee in a condensed form.
The apparatus, in which the condensation is effected, is composed of a columnar
or other series of condensing chambers cooled to different degrees by a water-jacket
and each provided with a receptacle for the product condensed at the particular
temperature of the chamber, and means of drawing off the condensed products as
required.
The vapors as they are distilled off are subjected to successively decreasing tem-
peratures whereby the products are condensed successively in the inverse order of
their evaporating temperatures.
Dated sh: 04h 1
T
1000
A. MARTIN.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.
COMPLETE SPECIFICATION.
Improvements in and in Apparatus for Condensing the Vapours
Distilled Off from Coffee in the Operation of Roasting.
I, ABRAHAM MARTIN, of 177, Aston Lane, Birmingham, in the County of Warwick,
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 :-
My invention relates to the condensation of the vapors distilled off from coffee in
the operation of roasting; and has for its object to effect the fractional condensation
and separation of the different constituents of those vapors, in order that those
products which would prejudicially affect the flavor of the coffee may be eliminated
whilst those only which contribute to the palatable flavor and aroma of the coffee are
retained for the purpose of being returned in a condensed form to the roasted
coffee.
The apparatus in which the condensation is effected is illustrated in vertical longi-
tudinal section in the accompanying drawing forming part of this Specification, and
is composed of a columnar, or other, series of condensing chambers A. B. C. D. cooled
to different degrees by a water-jacket W and each provided with a receptacle R for
the product condensed at the particular temperature of the chamber and with a cock
or other means of drawing off separately the condensed products as required. The
water-jacket W is provided with inlet and outlet pipes and a circulation of water is
maintained through it by the natural flow of the water or by mechanical means.
column is provided with an inlet pipe P or P' leading directly into the first chamber A
and an outlet pipe Q leading out from the last chamber of the series. As the tem-
perature of the water flowing through the jacket becomes gradually raised by the
The

page_text: heat abstracted from the vapors, it follows that the temperatures within the several
chambers A. B. C. D. are different and the vapors to be fractionally condensed are
admitted first to the chamber in which the temperature is highest from which they
pass to the next in which the temperature is slightly lower, and so on throughout the
series. The vapors are thus subjected to successively decreasing temperatures
whereby the products are condensed successively in the inverse order of their
evaporating temperatures.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
The herein described. method of, and apparatus for, fractionally condensing the
vapors distilled off in roasting coffee, as specified.
Dated this 10th day of November 1890.
Dated this on day of November 1890.
A. MARTIN.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.