A HYDROPNEUMATIC ENGINE
Year: 1845

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
SHAW, of Broughton in Furness, in the County of Lancaster, Chemist and
Druggist, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria; by Her
Royal Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Twelfth day of July, in the ninth year of Her reign, did, for
Herself, Her heirs and successors, give and grant unto me, the said John Shaw,
my exors, admors, and assigns, Her especial licence, full power, sole privilege
and authority, that I, the said John Shaw, my exors, adñññors, and assigns, or
such others as I, the said John Shaw, my exors, admors, 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 HYDROPNEUMATIC ENGINE;" in which said. Letters
Patent is contained a proviso that I, the said John Shaw, shall cause a
particular description of the nature of my said Invention, and in what manner
the same is to be performed, to be inrolled 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 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
John Shaw, do hereby declare that the nature of my said Invention, and in
what manner the same is to be performed, are fully described and ascer-

page_text: that is to say:-
DESCRIPTION OF THE DRAWINGS.
Figure 1, A, B, is a cylinder with two revolving ends C, C. F is an axle-
tree, to which the ends are fast supported and running in the two pillars G, G.
D, D, D, D, are tubes running through air-tight collars obliquely through the
ends and fast to the arms M, M, M, M, of the axletree.. L is a tap or valve
to let water in at pleasure. R is a force pump to pump the water out again.
His a small air pump to be wrought by the turning of the axletree F.
Figure 2 represents the ends where the tubes run obliquely through into the
inside of the large cylinder in the direction represented, and fast to the arms,
so that when the tubes pull the arms turn. Thus, to shew it at work, through
L, fill the large cylinder with water; then, shut the tap or valve, and with the
pump R bring part of the water out, which will leave a vacuum, except the
water, which is not elastic. When the external pressure of air will press the
tubes D, D, D, D,.internally, consequently putting the arms M, M, M, M, öf
the axletree they must turn, which also carries the ends C; C; as they are
fast; thus, the continuous pull upon the arms: the axletree F.goes round with
them, when one air pump will keep up the vacuum if any air rushes in with
friction, and the crank at P will turn any other machine required:
In witness whereof, I, the said John Shaw, have hereunto set my hand
and seal, this Twelfth day of January, in the year of our Lord Ono
thousand eight hundred and forty-six
Enrolled the Twelfth day of January, in the year of our Lord One
thousand eight hundred and forty-six.
ויי.