CERTAIN IMPROVEMENTS IN MACHINERY FOR PROPELLING
Year: 1848

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
JAMES DAILEY, of 1 and 2, Colman's Place, in the Parish of Saint Mary,
Lambeth, in the County of Surrey, Lithographer, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Twenty-second day of
March, One thousand eight hundred and forty-eight, in the eleventh year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said William James Dailey, my exors, admors, and assigns, Her especial
licence, full power, sole privilege and authority, that I, the said William James
Dailey, my exors, adiñors, and assigns, or such others as I, the said William
James Dailey, 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 "CERTAIN IMPROVEMENTS IN MACHINERY FOR PROPELLING;" in which said Let-
ters Patent is contained a proviso that I, the said William James Dailey, should
cause a particular description of 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, to be inrolled in Her 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.

page_text: NOW KNOW YE, that, in compliance with the said proviso, I, the said
William James Dailey, do hereby declare that the nature of my said Invention,
and in what manner the same is to be performed, are fully described and
ascertained in and by the following statement thereof, reference being had to
the Drawing hereunto annexed, and to the figures and letters marked thereon,
that is to say-
My Invention of improvements in propelling consists of the method of
arranging a number of propeller blades, and causing them at proper intervals
to turn or revolve on their axes by the aid of inclined projections, as hereafter
described.
DESCRIPTION OF THE DRAWING.
Figure 1 is a plan view of one of my propellers, with the plate or cover f
removed, to shew the. internal construction; Figure 2 is another plan view of
the same, with the plate or cover f. fixed in its proper position; Figure 8 is
an under side view of the plate or cover, shewing thei nclined projections by
means of which the propeller blades are caused to revolve; Figure 4 is a side
view of the propeller as applied in a horizontal position, close to the bottom of
a boat, a little above the keel; and Figure 5 is a section through the line a, b,
in Figure 1: a is the main shaft or axis, on to which is fixed the boss b; around
this boss bare formed holes or recesses to receive the ends of the axes c, c, c,
c, c, c, of the propeller blades; on these axes care affixed cross pieces d, formed
of hardened steel, which are acted upon by being brought into contact with tho
inclined projections e and e*, formed on the plate or cover f, as the cross pieces
d are carried round by the main shaft or axis a; g is a hollow box formed of
cast iron, the bottom of which serves to enclose the under side of the axis and
parts c and d; the sides have holes formed in them, in which the outer ends of
the axis c have their bearing. It will be seen by referring to the Drawing,
that when the cross pieces d are travelling over the inclined projection e*,
that the blades will assume a horizontal or feathered position, but as soon as
the cross pieces are brought into contact with the other inclined projection e,
they begin to assume a vertical position, and present their broad or propelling
surfaces to the water, and it will be seen that they remain in this position
until they are again acted on by the inclined projection e*, by which they are
severally turned over into the feathered or horizontal position, all of which is
clearly shewn in the Drawing.
Having described the nature of my Invention, and in what manner the same
is to be performed, I wish it to be understood, that I do not confine myself to
the exact shape, size, or number of the propelling blades, so long as the peculiar

page_text: character of my Invention be retained; but what I claim is, the method of
arranging the different parts into a propeller, as shewn, and causing them to
revolve in the manner described, when brought into contact with the inclined
projections e and e*.
In witness whereof, I, the said William James Dailey, have hereunto
set my hand and seal, this Twenty-first day of September, in the year of
our Lord One thousand eight hundred and forty-eight.
WILLIAM JAMES (L.s.) DAILEY.
AND BE IT REMEMBERED, that on the Twenty-first day of September,
in the year of our Lord 1848, the aforesaid William James Dailey came
before our said Lady the Queen in Her Chancery, and acknowledged the
Specification aforesaid, and all and everything therein contained and specified,
in form above written. And also the Specification aforesaid was stamped
according to the tenor of the Statute made for that purpose.
Enrolled the Twenty-first day of September, in the year of our Lord
One thousand eight hundred and forty-eight.