A NEW MACHINE OR INSTRUMENT CALLED THE HYDROSTRATIC SELF- BLOWING MACHINE
Year: 1814

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ROBERT
BARLOW, late of Spring Gardens, in the County of Middlesex, but now of
Francis Place, in the County of Surry, Surgeon, send greeting.
WHEREAS His most Excellent Majesty King George the Third, by His
Letters Patent under the Great Seal of Great Britain, bearing date at West-
minster, the Twenty-second day of November, in the fifty-fifth year of His
reign, did, for Himself, His heirs and successors, give and grant unto me,
the said Robert Barlow, His especial licence, that I, the said Robert Barlow,
my executors, administrators, and assigns, or such others as I, the said Robert
Barlow, my executors, administrators, 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, my
Invention of "A NEW MACHINE OR INSTRUMENT CALLED THE HYDROSTRATIC SELF-
BLOWING MACHINE;" in which said Letters Patent their is contained a proviso,
obliging me, the said Robert Barlow, by an instrument in writing under
my hand and seal, particularly to describe and ascertain the nature of my
said Invention, and in what manner the same is to be performed, and to cause
the same to be inrolled in His Majesty's High Court of Chancery within two
calendar months next and immediately after the date of the said recited
Letters Patent, as in and by the same, reference being thereunto had, will
more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Robert Barlow, do hereby declare that the nature of my said Invention, and
the manner in which the same is to be performed, is described and ascer-

page_text: thereof :-
Figure 1, A, A, A, A, is the outside case or cylinder, made of an equal
square or round of any given demension, also with any given heigth, with a
bottom securely solder'd to be made water tight, and the cover to be made to
take occasionally off. B is an inside square cylinder or pistone, which is made
one inch less than the outside, and one-half the height, with a top fast soldered
on, and just raised as the Figure, which must be air tight. C is a ball, made
to screw on the rod, which is attached to the pistone, which is also screwed to
a flanched male screw, soldered to the top of the piston. F is four, more or less,
thicknesses of sheet lead, made square or round to the top, and a hole in the
middle to let thro' the screw before mentioned. This is to give it a proper
weight to press the atmospherie air thro' the tube D, which is of equal weight
with the tube C, and about one quarter of an inch in a diamerter to feed the blow
pipe H, which is attached to a flexible tube, to move in any direction as is
desired by the artist. C is a tube of one inch diamerter, which has a valve
affixed on the top, which valve is screwed to a hollow male screw fast soldered
thro' the bottom. The property of this valve is to admit in a sufficient quantity
of atmospheric air into the piston when drawn up by the ball, and to the top as
far as it will riso, which, when let go, the sheet lead being a proportional weight,
presses the same air thus received into the tube D, and by which means a
proper current of air is carried thro' the blow pipe on the blaze of the lamp at
the operator's will. H, H, is a common blow pipe of any given size requisite,
attatched to a flexible tube, which is made with a too, tapered to fasten into the
end of the tube D, so as to be taken on and off at pleasure, that any other tube
may also be placed in the same when required. Also, in addition to the
common blow pipe, about three or four inches from the bottom is a small stop-
cock, which is made with a button on the top part, to come thro' the pipe &
quarter of an inch, guarded by a spring at the bottom, that by the presure of
the thumb, the current of air may be increased or decreased at pleasure. If
both hands are required to be used, the blow pipe must be made with pewter,
with a nossil or brass tip, and bent in such direction as the nosil must have its
proper action on the lamp I. The dotted line which runs across is the height
it is to be filled with water. E is a male and female hollow screw; the male
part is fast soldered to the body, and the female is for the use of letting out
the water when it becomes fetid, by unscrewing the same.
.
Figure 2 is the full form of the machine when finished, with the lamp, which
is suspended by a socket, staple, or loop, so as it may be affixed or unfixed, and
placed in any other situation, according as the artist would wish...The tubes

page_text: and funnel is to carry off the smoak, and is only attached by a hook and ring,
so as to be made moveable. The top part which forms the square is made
with an elbow, and the joint, which is the line A, is made to take off, to render
the machine capable of being moved to any situation on the place where it is
to stand, the other end being carried thro' the window. In the top square B
of the outside case on each side is there affixed a handel to carry it about
occasionally, and the casters at the bottom are there affixed that it may easily
be wheeled from any workman to another. C is a hole purchased in the front
of the lid, where the water is to be poured in by the assistance of a funnell.
I have now, to the best of my judgment, made every part of this invaluable
machino as clear as possible, which may be comprehended by any man of
common capacity; but I have not, nor do I mean to confine myself to any
form, shape, or size, in any one point, nor of what metal or material they shall
be manufactured of or with, as they are capable of being made of various
materials, and in different form, shape, or size, according to the taste of the