A NEW-INVENTED GEOMETRICAL SCALE-BEAM ENGINE, THAT WILL DISCHARGE Two STREAMS AT ONCE, WITH A LESSER QUANTITY OF HANDS TO BE EMPLOYED TO WORK THE SAME THAN ANY OTHER ENGINE HERETOFORE INVENTED OF THE SAME SIZE, AND THROW DOUBLE THE QUANTITY OF WATER OF ANY OTHER ENGINE OP THE SAME SIZE, WHICH WILL BE OF GREAT BENEFIT AND ADVANTAGE TO ALL PER- SONS WHO SHALL USE THE SAME IN EXTINGUISHING DREADFULL FIRES AT LAND, AND OF SINGULAR SERVICE AT SEA IN CASE SHIPS BE LEAKY, BY BEING WROUGHT BY FEW HANDS AND DISCHARGING AN EXTRAORDINARY QUANTITY OF WATER
Year: 1760

page_text: PERKINS SPECIFICATION.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
PERKINS, of the Parish of Saint Paul, Shadwell, in the County of Middlesex,
Engineer, send greeting.
WHEREAS I, the said Thomas Perkins, did, by my Petition, humbly
represent unto His most Excellent Majesty King George the Second, that
I had, by great application and study, invented and brought to perfection an
instrument, called "A NEW-INVENTED GEOMETRICAL SCALE-BEAM ENGINE, THAT
WILL DISCHARGE Two STREAMS AT ONCE, WITH A LESSER QUANTITY OF HANDS TO BE
EMPLOYED TO WORK THE SAME THAN ANY OTHER ENGINE HERETOFORE INVENTED OF
THE SAME SIZE, AND THROW DOUBLE THE QUANTITY OF WATER OF ANY OTHER ENGINE
OP THE SAME SIZE, WHICH WILL BE OF GREAT BENEFIT AND ADVANTAGE TO ALL PER-
SONS WHO SHALL USE THE SAME IN EXTINGUISHING DREADFULL FIRES AT LAND, AND OF
SINGULAR SERVICE AT SEA IN CASE SHIPS BE LEAKY, BY BEING WROUGHT BY FEW
HANDS AND DISCHARGING AN EXTRAORDINARY QUANTITY OF WATER;'
sideration whereof, and in regard that I, the said Petitioner, was the first
Inventor thereof, His said Majesty did therefore, by His most gracious Letters
Patent, bearing date at Westminster, the Fourth day of March, in the thirty-
third year of His reign, give and grant unto me, the said Thomas Perkins,
my executors, administrators, and assigns, IIis especial licence, full power, sole
priviledge and authority, to make, use, exercise, and vend my said Invention
within that part of His said Majesty's Kingdom of Great Britain called
England, His Dominion of Wales, and Town of Berwick-upon-Tweed. to
have, hold, exercise, and enjoy the said licence, powers, priviledges, and

page_text: advantages thereby granted unto me, the said Thomas Perkins, my executors,
administrators, and assigns, for and during and unto the full end and term of
fourteen years from the date of the said Letters Patent next and immediately
ensuing, and fully to be compleat and ended, according to the Statute in such
case made and provided; in which said Letters Patent there is contained a
proviso, that if I, the said Thomas Perkins, should not 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 inrolled in the High Court of Chancery within three
calendar months next and immediately after the date of the said Letters
Patent, that then the said Letters Pattent, and all liberties and advantages
thereby granted, should utterly cease, determine, and become void, as in and
by the said Letters Patent doth and may more fully and at large appear.
NOW KNOW YE, that I, the said Thomas Perkins, in compliance with
the said proviso, do hereby particularly describe and ascertain the nature of
my said Invention, and the manner in which the same is to be performed, as
follows (that is to say):-
A Description of a New-invented Double Stream Engine.-First, the cistern
is about seven feet long and twenty inches wide, and nineteen inches deep.
Second, it is to have four wheels, to be drawn by men or horses. Third, the
water ways are about four inches diameter, with a suction cock four inches
bore. It has four cylinders or barrells, about six inches diameter, which are
to be fixed on the water ways in a square, which work is fixed in the middle of
the cistern. In each cylinder or barrel is a pistern, which draws and forces,
which when drawn up fills the barrel, and when forced down the water is
forced into the air vessell, which is fixed between the four barrells, which, by
the help of the pressure of the air, throws it through the stand pipes to the
place intended. The air vessel is covered by a case, and at the upper end of
one of the stand pipes is a cock to turn on occasion to make the water
ascend out of one of the pipes to a much greater distance.
In witness whereof, I, the said Thomas Perkins, have hereunto set my
hand and seal, the Twenty-fourth day of May, One thousand seven
hundred and sixty.
Sealed and delivered (being first legally
stampt) in the presence of us,
MICH BOTHOM.
JOHN HADMAN.
THO PERKINS. (L.8.)

page_text: AND BE IT REMEMBRED, that on the Twenty-fourth day of May, in the
thirty-third year of the reign of His Majesty King George the Second, the said
Thomas Perkins came before our said Lord the King in His Chancery, and
acknowledged the Writing aforesaid, and every matter and thing therein
contained, in form above said. And the said Writing was stamped 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 Twenty-fourth day of May, in the thirty-third year of the
reign of His Majesty King George the Second, 1760.