IMPROVEMENTS IN HEATING AND EVAPORATING FLUIDS
Year: 1837

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
BAYLIS, of Tamworth, in the County of Stafford, Engineer, send greeting.
WHEREAS His late most Excellent Majesty King William the Fourth,
by His Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Sixth day of May, in the seventh year of His reign, did, for
Himself, His heirs and successors, give and grant unto me, the said Thomas
Baylis, His especial licence, full power, sole privilege and authority, that I, the
said Thomas Baylis, my exors, adñiors, and assigns, or such others as I, the said
Thoinas Baylis, my exors, adiñors, 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,
within England, Wales, and the Town of Berwick-upon-Tweed, the Invention
of "IMPROVEMENTS IN HEATING AND EVAPORATING FLUIDS," communicated to me
by a certain Foreigner residing abroad; in which said Letters Patent is con-
tained a proviso, that I, the said Thomas Baylis, shall cause a particular
description of the nature of the said Invention, and in what manner the same
is to be performed, to be inrolled in His 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 in and by the same, reference being there-
unto had, will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Thomas Baylis, do hereby declare the nature of the said Invention, and the
manner in which the same is to be performed, are fully described and

page_text: DESCRIPTION OF THE DRAWING.
Figure 1 is a plan of a salt pan suitably arranged for carrying out the
Invention. Figure 2 is a longitudinal section, and Figure 3 is a transverse
section of Figure 1. Figure 4 is another section, in order to shew that the
pan may have a double bottom, into which steam may be constantly supplied
from any suitable steam generator or boiler.. In each of these Figures the
same letters indicate similar parts. a, a, a, a, is the pan or shallow vessel for
receiving the brine or other saline fluid. b, b, are two recesses, into which the
workman or "waller" draws the salt from time to time. So far the arrange-
ment does not materially differ from the pans or vessels usually employed in
the manufacture of salt. c, c, are a series of hollow partitions which divide
the bottom of the pan or vessel a, a, into several compartments. The parti-
tions c, c, being kept constantly supplied with steam from a suitable steam
boiler or generator, by means of the pipe or trunk d, and as the steam becomes
condensed it falls to the bottom of the partitions c, c, and flows back to the
Hence it will be
steam boiler, or to another vessel by the pipe or trunk e.
seen that the brine becomes heated by means of a series of
and the salt, as it forms, falls to the bottom of the pan, and does not interfere
with the heat from the hollow partition passing to the brine, which is an
important advantage over such pans or vessels as have only bottom heat
applied thereto. Figure 4 shews an arrangement for applying heat at the
In this
bottom of the pan, as well as by the aid of the hollow partitions c.
case the double bottom to the pan acts as a steam chest or chamber, having
connection with the partitions c. This arrangement will be of particular
advantage in making the fine grain salt, where the brine is required to be kept
constantly boiling, and I would remark that the partitions for such fine salt pans
may be made by combining a series of tubes one to the other, thus:
which will give greater strength where very rapid boiling is desired, in
order to produce large quantities of salt in a given sized pan or vessel,
as it will be evident that by such an arrangement much greater
upright surfaces,

page_text: strength may be obtained to the partitions, and thus admit of higher pressure
steam being employed.
Having thus explained the nature of the Invention, I would remark that I
do not confine myself to the using of any particular number of the partitions
c, c, as they may be varied according to the effect desired to be obtained; and
I would only further state that the workman or "waller," having an ordinary
rake, will with facility draw the salt from the various compartments produced
by the partitions c, into the recesses at the two sides of the pan or vessel a, a,
and from thence he will with facility remove the salt by means of the usual
perforated shovels. And I would have it understood that what I claim as the
Invention secured by the present Letters Patent is the application of a series of
hollow partitions c, c, to the bottom of salt pans, in order more advantageously
applying the heat of steam to the heating and evaporating brine or other saline
fluids, in order to the making of salt, as above described.
In witness whereof, I, the said Thomas Baylis, have hereunto set my
hand and seal, this Sixth day of November, One thousand eight
hundred and thirty-seven.
BERED, that on the Sixth day of November, in the
year of our Lord 1837, the aforesaid Thomas Baylis came before our said
Lady the Queen in Her Chancery, and acknowledged the Specification afore-
said, and all and every thing therein contained and specified, in form above
written. And also the Specification aforesaid was stamped according to the
tenor of the Statute made for that purpose.