Year: 1762

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
WALKINSHAW, of Borrowstowness, in the County of Linlithgow, Coal Viewer.
send greeting.
WHEREAS His most Excellent Majesty King George the Third, by His
Royal Letters Patent under the Great Seal of Great Britain, bearing date on
or about the
day of
in the second year of His said
Majesty's reign, and in the year of our Lord One thousand seven hundred and
sixty-two, did give and grant unto me, the said John Walkinshaw, His espe-
cial licence, full power, sole priviledge and authority, that I, the said John
Walkinshaw, my executors, administrators, and assigns, and every of them, by
himself and themselves, and by his or their deputy or deputies, servants or
agents, or such others as I, the said John Walkinshaw, my executors, admi-
nistrators, or assigns, should at any time agree with, and no others, should
and lawfully might, during the term of years therein expressed, make, use,
exercise, and vend, within that part of His Majesty's Kingdom of Great
Britain called England, His Dominion of Wales, and Town of Berwick-upon-

page_text: Tweed, and also in His Majesty's Plantations and Colonies abroad, my new-
invented engine, being "A SORT OF CATAPULT FOR WORKING OF MINES AND
PITTS AFTER A NEW AND DIFFEFENT MANNER, AND WITH FAR LESS EXPENCE THAN
THE ME HOD NOW USED;" in which said recited Letters Patent is contained
a proviso obliging me, the said John Walkinshaw, writing under my hand
and seal, to cause a description of my said Invention, and in what manner
the same is performed, to be inrolled in His Majestie's High Court of
Chancery within four calendar months next and immediately after the date
of the said recited Letters Patent, as in and by the same, relation being
thereunto had, may more at large appear.
NOW KNOW ALL YEE, that in compliance with and full performance of
the said proviso above recited, I, the said John Walkinshaw, do hereby declare
that my said new-invented engine consists of a frame of wood made in an
oblong square, at the end of which frame a great number of small cords are
twisted into one big cable by two iron wheels, one at each end of this cable,
and the wheels are wrought tooth and pinion, so as to give the cable a suffi-
cient degree of tention; at the other end of this frame of wood is a winlass
wheel, with an iron wheel on one end of the winlass, which is turned by a
pinion and handle to it. This winlass raises the bead of a big hammer, which
has the end of its shaft twisted into the middle of the cable of small cords at
the other end of the engine; when the winlass has raised the head of the
hammer to an angle of ninety degrees, a pair of forceps opens and lets the
head of the hammer fall with immence force on the ends of the sheeff of
chissells or wedges, which sheef of chissells or wedges consist of eight, ten, or
a dozen or more, set in two equall rows of two or three inches distance the one
row from the other row, and kept in the same possission by moveable collars,
and the power of the hammer forces this sheef of chissells into the coall wall
or other metalls in mines, and so works them with little or no loss in com-
parison with what is lost in the common way of working, and also works much
more of the coals or mines, and for less expence, than has hitherto been done.
This engine can be made of any dimensions for the different mines where it is
employed, and the power of this engine can be increased at pleasure; for as it
is the power of the elasticity of the air that gives this engine its force, the
augmenting the diameter of the cable of small cords twisted together augments
the force of the engine according to the squares of the diameter of the different
cables used. When this engine is employed in coall pitts or other mines it
is wrought by one or two men, according to the bigness and power of the
engine, and works in all directions, horizontal, perpendicular, or inclined.

page_text: When this engine is employed to the raising of water, the power of it is applied
to raise pump rods, &c.
In witness whereof, I, the said John Walkinshaw, have hereunto set my
hand and seal, this Thirtieth day of August, in the second year of the
reign of our Sovereign Lord George the Third, by the grace of God,
of Great Britain, France, and Ireland King, Defender of the Faith,
and so forth, and in the year of our Lord One thousand seven hundred
and sixty-two.
ALLAN CLARke.
WM JEFFREYS.
AND BE IT REMEMBRED, that on the Thirtieth day of August, in
the second year of the reign of His Majesty King George the Third, the said
John Walkinshaw came before our said Lord the King in His Chancery, and
acknowledged the Writing aforesaid, and every matter and thing therein con-
tained, in form above said. And the said Writing was stampt according to
the Statute made in the sixth year of the reign of the late King William and
Queen Mary and so forth
Inrolled the Fourth day of September, in the second year of the reign of
His Majesty King George the Third, 1762.