IMPROVEMENTS IN MACHINERY FOR BEEWING
Year: 1852

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
LAWRENCE, of Colnbrook, in the County of Middlesex, Brewer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent under the Great Seal of the United Kingdom of Great Britain and
Ireland, bearing date at Westminster, the Twenty-sixth day of August, in the
sixteenth year of Her reign (One thousand eight hundred and fifty-two), did
give and grant unto me, the said James Lawrence, my exors, adiñors, and
assigns, Her especial licence, full power, sole privilege and authority, that I, the
said James Lawrence, my exors, admors, and assigns, or such others as I, the
said James Lawrence, my exors, adñiors, 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 expressed, should and lawfully might make, use, exercise,
and vend my Invention of “IMPROVEMENTS IN MACHINERY FOR BEEWING"
within that part of Her said Majesty's United Kingdom of Great Britain and
Ireland called England, Her Dominion of Wales, and Town of Berwick-upon-
Tweed, in the Islands of Jersey, Guernsey, Alderney, Sark, and Man, and also
in all Her said Majesty's Colonies and Plantations abroad; in which said
Letters Patent there is contained a proviso requiring that I, the said
James Lawrence, should particularly describe and ascertain the nature of my
said Invention, and in what manner the same is to be performed, by an
instrument in writing under my hand and seal, and cause the same to be

page_text: enrolled in Her said 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, reference being thereunto had, will more fully and at large
appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
James Lawrence, do hereby declare that the nature of my said Invention, and
the manner in which the same is to be performed, are particularly described
and ascertained in and by this present Instrument, reference being had to
the two accompanying Sheets of Drawing hereunto belonging, and forming
part thereof, that is to say:-
My Invention comprises,―
Firstly, machinery or apparatus for the admission and distribution of steam,
vapour, fluid, or liquid into and amongst the contents of mash tuns or other
vessels for heating, extracting, or other purposes in the process of brewing
worts. And the mode I prefer of constructing such machinery or apparatus
consists in the use of perforated pipes placed at the bottoms of mash tuns or
other vessels, or between the bottoms and false bottoms. The Drawing No. 1
illustrates the manner in which this part of my Invention is to be performed.
Figure 1 is a vertical section, and Figure 2 a sectional plan of a mash tun,
or other vessel having my said improvement. Figure 3, detached edge view
of a distributing chamber with supply and distributing pipes. a, a, are the
sides of the mash tun; b, its bottom or floor; .c, its false bottom or upper floor
(which is composed of segmental pieces of the form represented in the
detached views, Figures 4 and 5); d, supply. pipe for admission of the steam
or other fluid; e, chamber for its distribution to the perforated distributing
pipes f, f, which are placed between the two floors, and are radially disposed,
but may be otherwise disposed or shaped, if preferred. The floor c is also
perforated to allow the steam or fluid to pass to the contents in the tun. g is
a step or bearing on the top of the chamber e for a shaft, as in the Figure 10
of Drawing No. 2, where the foregoing arrangement is also shewn. When it
is desired to apply the Invention where the original or lower floor is already
occupied by a step or bearing, as in many ordinary mash tuns, or if it shall be
preferred to place the bearing on the lower floor, the chamber e may be
dispensed with, and the distributing pipes fed from a circular or ring pipe e*,
as shewn in Figures 6 and 7, and also in the Figure 12 herein-after mentioned.
Figures 8 and 9 shew a slight variation in the form of the floor pieces c, c,
adapted to such an alteration. It is to be understood, that although I prefer
to distribute steam among the contents of the mash tun, heated water or worts
may be used, if preferred.

page_text: Secondly, machinery or apparatus to be used in mash tuns or similar vessels
for mashing or stirring up the malt or extracting its properties, and consists in
producing upward, downward, or other currents in the contents of such vessels,
by inclining the blades or beaters of mashers, and by curving their travelling
arms, and also by inclining their travelling axes. The Drawing No. 2
illustrates the manner in which this part of my Invention is to be performed.
Figure 10 is a vertical section and Figure 11 a sectional plan of a mash tun,
shewing an arrangement of inclined beaters fixed on travelling curved arms,
This arrangement is intended to be used in small mash tuns, say of eight feet
diameter and under. The sides and steam floor of this tun are marked with
the same letters of reference as in the Drawing No. 1. m is an upright
central shaft or axis resting on the step 9 and held in a suitable bearing n
fixed on the cross bar o which supports the driving gear. p, p, are the curved
travelling arms or rods welded to bosses, which are keyed or fixed on the
shaft m, and q, q are the inclined blades or beaters which are rivetted or other-
wise fixed to the arms p, p. The driving power is applied to the shaft m by
means of the spur wheel s, the shaft s* and the bevil wheels 82 and s³. The
shackle is for the purpose of hoisting the shaft m with its arms and beaters
completely out of the mash tun, the bearing n being opened for the purpose
whenever this is desired. The arms p being curved instead of radiating in
straight lines from the central axis, will together with the heaters q tend to
produce an inward or outward current, and beaters being inclined from the
perpendicular will cause an upward or downward current according to their
inclination and the direction of the motion given to them. I prefer to employ
two arms having beaters inclined in opposite directions, so as to give both an
upward and downward current at the same time.
Figure 12 is a vertical section, and Figure 13 a sectional plan (on a smaller
scale than the foregoing Figures), shewing a mash tun fitted with beaters,
which revolve upon an inclined travelling axis. This arrangement is intended
to be used in mash tuns of larger diameter than eight feet. The parts which
correspond with those in the Figures already described are marked with
similar letters of reference. u is a fixed pillar or standard which supports the
shaft m, and also the fixed or stationary bevil wheel u*. To the shaft m the
travelling inclined arm or axis v is welded, and this carries the tubular
axis w which is furnished with an ordinary arrangement of arms and beaters
marked and y, which are not shown in the Figure 13 in order that the
tubular axis may be shewn in section. The bevil pinion is keyed on the
axis w, and as the inclined arm v travels round the mash tun, this pinion