CERTAIN IM- PROVEMENTS IN THE MANUFACTURE OF YEST OR BARM
Year: 1849

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, MILES
WRIGLEY, of Ashton-under-Lync, in the County of Lancaster, Architect, send
greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Letters Patent under the Great Seal of Great Britain, bearing date at West-
minster, the Eleventh day of January, in the twelfth year of Her reign,
and in the year of our Lord One thousand eight hundred and forty-nine, did
give and grant unto me, the said Miles Wrigley, Her especial licence, full
power, sole privilege and authority, that I, the said Miles Wrigley, my
exors, adiñors, and assigns, and such others as I, the said Miles Wrigley,
my exors, admors, or assigns, should at any time agree with, and no others,
from time to time and at all times during the term of years therein ex-
pressed, should and lawfully might make, use, exercise, and vend, within
England, Wales, and the Town of Berwick-upon-Tweed, and in all the Islands
of Jersey, Guernsey, Alderney, Sark, and Man, and also within all Her
Majesty's Colonies and Plantations abroad, my Invention of "CERTAIN IM-
PROVEMENTS IN THE MANUFACTURE OF YEST OR BARM;" in which said Letters
Patent is contained a proviso, that I, the said Miles Wrigley, shall cause a
particular description of the nature of my said Invention, and in what manner
the same is to be performed, to be enrolled in Her Majesty's High Court
of Chancery within six calendar months next and immediately after the
date of the said in part recited Letters Patent, as in and by the same,
reference being thereunto had, will more fully and at large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
Miles Wrigley, do hereby declare that the nature of my said Invention, and
the manner in which the same is to be performed, is particularly described
and ascertained in and by the following explanation thereof (that is to say) :-
My improvements relate to the manufacture of yest or barm, either in a
solid or liquid state, applicable either for baking or brewing purposes, and
consist in the method of obtaining such product by the admixture of certain
compounds herein-after mentioned, in the proportions and in the manner
below stated. The principal objects to be obtained by the application of my
Invention are as follows:-
First, the yest or barm so produced possesses a much greater power of
fermentation than the kind hitherto in use, and consequently operates much
quicker when combined with the flour.
Secondly, my improved yest.or barm possesses a considerable tendency to
collect moisture, which is very desirable, so that bread fermented. by it will
keep much longer than that fermented by the ordinary yest or barm, and the
bread instead of being deteriorated will be improved by keeping.
Thirdly, the yest or barm thus prepared will keep much better than the
yest or barm heretofore in use. And,
Fourthly, ale or porter fermented by my improved yest or barm will be
found to be much clearer, and to keep much better than that fermented by the
ordinary barm, and will have the property of sparkling upon coming into
contact with the atmosphere.
The first part of my Invention consists in manufacturing yest or barm
according to the following formula:-Take of yest or barm produced by the
fermentation of ale or porter one hundred pounds weight; of yest or barm
produced by the fermentation of spirits (whether made by the distillation of
malt or other grain, or from sugar or molasses, or any other article which will
produce yest or barm), also one hundred pounds weight; of malt, barley, oats,
and rye ground into flour, each one pound; of spirits of wine four ounces;
and water ten ounces; or as near such proportions as may be found efficient.
The method of mixing the ingredients is as follows:-First, mix together the
brewer's and distiller's yest or barm, and run the mixture through a sieve in
order to free it from any sediment or other impurities. Then mix together
the spirits of wine and the water and pour it on to the grain, at the same time
adding as much of the yest or barm as will make it into a thin paste; when
this is well mixed add it to the remainder of the yest or barm and stir it with
a wooden spatula until the whole is well mixed. This forms the compound
liquid yest or barm for the use of brewers or bakers. To manufacture the

page_text: solid compound yest or barm strain the above mixture, take the solid parts in
coarse linen bags and place them in the interior of a perforated cylinder in a
common hydraulic screw or other press; upon applying pressure the liquid
parts will run off and the solid parts remaining form the solid compound yest
or barm. Instead of the before-mentioned ordinary yest or barın, a yest or
barm made from the fermentation of any one or more of the following
materials will answer the same purpose, namely, any kind of British or foreign
fruits, either fresh or dried, or any other material containing saccharine matter,
or of sesqui-carbonate of ammonia, chloride of sodium, alum, tartaric acid,
cream of tartar, carbonate of soda, and a variety of other materials which, by
fermentation, will produce yest or barm.
Having thus described the nature and object of my said improvements,
together with the method of carrying the same into practical effect, I would
remark in conclusion, that I claim as my Invention,-
First, the method of manufacturing yest or barm either solid or liquid by
the admixture of the above specified ingredients; and,
Secondly, the application or use of an hydraulic or other press to such
manufacture, in order to separate the solid from the liquid parts of the said
yest or barm.
In witness whereof, I, the said Miles Wrigley, have hereunto set my
hand and seal, this Sixth day of July, One thousand eight hundred
and forty-nine.