AN APPARATUS FOR TESTING BREWING MATERIALS
Year: 1885

page_text: CHRISTEN RÜS BONNE, 33 Ducie Street, Chorlton on Medlock, Manchester,
Brewers Engineer, do hereby declare the nature of my invention for AN APPARATUS
FOR TESTING BREWING MATERIALS, to be as follows:-
A small pan, advisedly made of corrugated metal, and provided with a lid, dips
into a larger pan, the intermediate space being filled with water. The apparatus
is worked as follows: Having weighed the inner pan I put a certain amount of the
material to be tested into it, together with a certain quantity of liquor, the weight
of both of which must be taken exactly down. Heat is now applied under the
outer pan, and as the water becomes heated, that will heat the material in the
inner pan, untill it is sufficiently liquified. If strong heat is required, the fire may
be applied direct to the inner pan. The material is finally weighed in order to
ascertain the amount of liquor that has been lost through evaporation, and that is
made good by adding a similar amount of fresh liquor. The material is then
strained through a bag or otherwise, and the strength of the liquor is ascertained
by means of the hydrometer. By means of tables which are calculated specially
for this purpose the readings on the hydrometer are transferred to inore practical
modes of expressing the quality of the materials that have been tested.
37

page_text: An Apparatus for Testing Brewing Materials.
I, CHRISTEN RUS BONNE, formerly of 33 Ducie St. Chorlton on Medlock
Manchester, and now of 26 Mark. Lane, London, Brewer's, Engineer do hereby
declare the nature of my invention for AN APPARATUS FOR TESTING BREWING
MATERIALS and in what manner the same is to be performed, to be particularly.
described and ascertained in and by the following statement :-
A small pan, advisedly made of corrugated metal, and provided with a lid, dips
into a larger pan, the intermediate space being filled with water.
The apparatus
is used as follows:-Having weighed the inner pan and noted the weight thereof,
I place therein a certain amount of the material to be tested, together with a
certain quantity of liquor, the exact weights of both material and liquor being
noted Heat is now applied to the outer pan and as the water becomes heated, it'
will heat the material in the inner pan, until it is sufficiently liquefied. If strong
heat is required, it may be applied directly to the inner pan.
Finally the material is weighed in order to ascertain the amount of matter lost
by evaporation, which is made good by adding a similar amount of fresh liquor.
The material is then strained, through a bag or otherwise, and the strength of the
liquor is ascertained by the hydrometer. By means of tables, which are calculated
especially for this purpose the readings of the hydrometer are converted into
more practical modes of expressing the quality of the material that has been
tested.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is
1. The replacement of the matter lost by evaporation by addition of fresh liquor
before reading with the hydrometer.
2. The use of tables for converting hydrometrical into other readings.