CERTAIN IM- PROVEMENTS IN THE WORKING OF PUMPS AND OTHER MACHINERY
Year: 1818

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
CALDERBANK, of Liverpool, in the County of Lancaster, Plumber, send greeting.
WHEREAS His most Excellent Majesty King George the Third did, by
His Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Twenty-third day of
January, in the fifty-eighth year of His reign, give and grant unto me, the
said Thomas Calderbank, my exors, admors, and assigns, His especial licence,
full power, sole privilege and authority, that I, the said Thomas Calderbank,
my exors, admors, and assigns, should and lawfully might, during the term
of years therein expressed, make, use, exercise, and vend within England,
Wales, and Town of Berwick-upon-Tweed, my Invention of "CERTAIN IM-
PROVEMENTS IN THE WORKING OF PUMPS AND OTHER MACHINERY;" in which said
Letters Patent there is contained a proviso that if I, the said Thomas
Calderbank, should not particularly describe and ascertain the nature of my
said Invention, and in what manner the same is to be performed, by an instru-
ment in writing under my hand and seal, and 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 Letters Patent, that then the said
Letters Patent, and all liberties and advantages whatsoever thereby granted,
shall utterly cease, determine, and become void, as in and by the same, relation
being thereunto had, may more fully and at large appear.

page_text: NOW KNOW YE,' that in compliance with the said proviso, I, the said
Thomas Calderbank, do hereby declare that the nature of my said Invention,
and the manner in which the same is to be performed, are particularly
described and ascertained in and by the Drawings hereunto annexed, and the
following description thereof (that is to say):-
My improvement consists in the invention of a friction roller or rollers,
which may be easily applied upon the neck or necks of a crank or cranks for
more effectually working a pump or pumps, as will more fully appear from
the Drawings, in which Fig. 1 is an elevation of four pumps, with the friction
rollers attached thereto. Two pairs of pumps may be conveniently worked at
the same time by the winches b, b, whereby a constant stream of water will be
discharged from the pumps. a, a, a, a, are the pumps, cach pair being united
below the ship's deck so as to occupy less space in the hold. c, c, c, c, are
cranks, one set opposite to the other, and those for one pair of pumps at right
angles to those of the other. d,d, d, d, are the ends of levers, which in this
view conceal the friction rollers acting within their eyes. c, e, e, e, the piston
rods attached to the levers
the joint j; g,g, stancheons united by cross bars
which support the cranks. There are four of these stancheons, though only
two appear in the Drawings, the others being concealed.
The
Fig. 2 a different view of the pumps, the same letters referring to the same
parts in both Figures. f,f, the friction rollers placed upon the necks of the
cranks, and within the eyes of the levers. In this view only three of the
levers are seen. h, a stanchion united to another (concealed from view) by a
cross bar, supporting the ends of the levers by a pin (i), shewn in Fig. 5.
The friction roller f, for the purpose of being placed upon the neck of the
crank, is made of two seperate parts, each exactly alike. These are scen
drawn on a large scale at Figs. 3 and 4. In Fig. 3 the parts are shewn
separated, (a) represents the exterior, and (b) the interior surfaces.
parts slide upon each other, and are kept firmly attached by dovetails (v)
let into each other, and secured by screws (s). Fig. 4 is a perspective
view of the friction roller complete. The lever (d), which is drawn separate
on a larger scale at Fig. 5, is made with an eye fitted to the friction roller,
whose diameter it exceeds a trifle in breadth. In this eye the friction roller
traverses as it revolves upon and is carried round by the crank, alternately
raising and depressing the lever at each revolution, and with it the piston rod by
a motion deviating a very little from a perpendicular. A is the lever in its
horizontal position, the roller being then at one extremity of the eye. The
dotted Figures B and C shew it at its greatest elevation and lowest depression,
and the position of the roller in these situations. Where there is not room in

page_text: ship for levers of the requisite length a frame or frames of cast iron or other
fit material may be substituted for them. Fig. 6 represents a frame of this
kind. It is furnished with four friction rollers, which work in grooves let into
uprights attached to the pumps. The crank and friction roller work in it in a
manner similar to the levers, raising and lowering it with a motion perfectly
perpendicular.
I do not mean to claim as my Invention this mode of working pumps, but I
do hereby claim this manner of forming the friction rollors, and the benefits to
be derived from the application thereof to the working of pumps and other
machinery in any manner whatever.
THOS (L.s.) CALDERBANK.
AND BE IT REMEMBERED, that on the Sixteenth day of March, in
the year of our Lord 1818, the aforesaid Thomas Calderbank came before our
said Lord the King in His Chancery, and acknowledged the Specification
aforesaid, and all and every thing therein contained and specified, in form
above written. And also the Specification aforesaid was stampt according to
the tenor of the Statute made for that purpose.
Inrolled the Seventeenth day of March, in the year of our Lord One
thousand eight hundred and eighteen.