IM- PROVEMENTS IN PROPELLING STEAM VESSELS OR OTHER VESSELS
Year: 1853

page_text: LETTERS PATENT to David Mushet, of Coleford, in the County of
Gloucester, Gentleman, and Edwin Whele of Shiffnal, in the
County of Salop, Engineer, for the Invention of "IMPROVEMENTS
Sealed the 8th February 1854, and dated the 10th August 1853.
PROVISIONAL SPECIFICATION left by the said David Mnshet
and Edwin Whele, at the Office of the Commissioners of Patents,
with their Petition, on the 10th August 1853.
pe
We, DAVID MUSHET, of Coleford, in the County of Glocester, Pr
Gentleinau, and EDWIN WIELE, of Shifnal, in the County of Salop,
Engineer, do hereby declare the nature of the said Invention for "IM-
PROVEMENTS IN PROPELLING STEAM VESSELS OR OTHER VESSELS" to be as
follows:-
Our improvements relate to a peculiar arrangement of paddles or
floats in lieu of the ordinary paddle wheel, and the same may be sub-
merged or otherwise according as the machinery may be arranged.
And for the better understanding of the construction and operation
of our said Invention we will now proceed to describe the Drawings

page_text: hereunto annexed, in which the same letters of reference apply to like
parts throughout.
Fig. 1, is a front view of our inproved arrangement of paddles.
A, is a bar or framework carrying the paddles B, B, B, fixed or
moveable thereon at right angles, but which may be fixed at any other
required angle, and is attached to the cranks C, D, in such manner
that the crank C, being connected with and actuated by the main
shaft when put in motion by the engine, the crank D, may only act
as a link, being suitably affixed to the side of the vessel or on a shaft,
When this
or connected with the main shaft by suitable means.
arrangement of paddles is used as a submerged propeller the frame-
work or bar A, may be attached to the cranks C, D, as before, but the
floats or paddles B, would have to be hinged, or work on pivots, or by
other means male capable of feathering themselves in the forward
stroke of the shaft.
"
Fig. 2, is a front view of another arrangement of our Invention.
A, is the shaft or framework; B, B, folding floats, hinged or jointed
at a, a, a, a, or by any suitable contrivance made to open or close
according as they are drawn forwards or pushed backwards; C, the
crank; D', the coniecting rod attached to the shaft A; E, E, 'collars
or guides for the said shaft. _.
.We would here observe that in using one crank we prefer the shaft.
or framework to, which the floats are attached to slide in a collar or
collars, as shown in Fig. 2; but we do not, however, restrict ourselves
to this mode of giving motion to the shaft A; neither do we confine
ourselves to the number of floats or paddles, thic angles at which, they
or the shafts or framework-are placed, or the materials, or dimensions,
or situation of the whole or any of the parts of our improvenients.
And we do declare that what we particularly claim as our Invention is,
namely,―
The peculiar arrangement of bars, shafts, or frames carrying fixed.
or moveable floats or paddles, as described..

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said David Mushet and Edwin Whele in the Great
Seal Patent Office on the 10th February 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, s
DAVID MUSHET, of Coleford, in the County of Gloucester, Gentleman,
and EDWIN WHELE, of Shifinal. in the County of Salop, Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Tenth day of August, in the year of
our Lord One thousand eight hundred and fifty-three, in the seven-
teenth year of Her reign, did, for Herself, Her heirs and succes-
sors, give and grant unto us, the said David Mushet and Edwin Whele,
Her special licence that we, the said David Mushet and Edwin
Whele, our executors, administrators, and assigns, or such others'
as we, the said David Mushet and Edwin Whele, our executors,
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might nake, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel. Islands, and Isle of Man, an Invention for "IMPROVEMENTS
IN PROPELLING STEAM VESSELS OR OTHER VESSELS," upon the condition
(amongst others) that we, the said David Mushet and Edwin Whele,
by an instrument in writing under our hands and seals, should particu-
larly describe and ascertain the nature of the said Invention, and in
what manner the same was to be performed, and cause the same to be
filed in the Great Seal Patent Office within six calendar months next
and immediately after the date of the said Letters Patent.
NOW KNOW YE, that we, the said David Mushet and Edwin
Whele, do hereby declare the nature of our said Invention, and in what
manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:
Our said improvements relate to peculiar mechanical arrangements
of paddles or floats to be used in lieu of the ordinary paddle wheel,
and the same may be submerged-or otherwise according as the machi-
nery may be arranged and worked by steam or other power.

page_text: apply to like parts throughout.
DESCRIPTION OF THE DRAWINGS.
Figure 1, is a front view of one arrangement of our improved pro-
peller. A, is a bar of the framework, carrying the vertical paddles
B, B, B, fixed to or moveable thereon; and it is attached to the cranks
C, D, in such a manner that the crank C, being connected with and
actuated by the main shaft, the crank D, also rotating is only required
to act as a link, being suitably affixed to the side of the vessel, or on a
shaft, or connected with the main shaft, if required. When to be used
as a submerged propeller the floats or paddles B, should be hinged, or
work on pivots, or by other like means be rendered capable of feathering
themselves during the forward stroke of the shaft A.
Figure 2, is a front view of one mode of applying clongated paddles.
The moveable paddles B', may be prolonged downwards, and brought
to bear against and within a row of fulcra a, a, so fixed upon the
vessel that they will divide each paddle into an unequal lever during
the forward stroke, thereby proportionally increasing the velocity of the
immersed extremity of the paddle in an opposite direction to the
motion of the shaft. The paddles may be attached by joints to the
shaft A, and move or slide through the eyes or fulcra a, or they may
be so constructed as to be detached from the shaft and actuated by a
cam or cams or other suitable means to operate on each seperate
paddle or on several paddles with their connecting shaft.
Figure 3, is a front view of another arrangement of our Invention
adapted for a submarine propeller. A", is the shaft or framework;
B, folding floats hinged at b, b, b, or by any suitable contrivance
made to open or close, or simply to feather themselves when each is
constructed in one piece, and according as their motion is backward
or forward, provision being made for reversing the action, when
required; C, the crank attached to the main shaft operated by the
engine; D, the connecting rod, attached to one end of the paddle
shaft A", working in the collars or guides E.

page_text: Having thus described three different arrangements of our said In- S
vention, we would here observe, that in using one crank, as in Figure 3,
we prefer the paddle shaft to slide in guide collars, but we do not limit
ourselves to such an arrangement. It is also obvious that our pro-
pellers might be worked by other means than steam power; we there-
fore do not restrict ourselves to the propelling of steam vessels, or to
the means employed for giving motion or the direction of the motion.
given to our propellers; neither do we confine ourselves to any parti-
cular angle or direction at which the floats or paddles shall be placed
or moved, nor to the method of reversing them, nor to the use of
crank, as an eccentric might be employed, nor to the materials, dimen-
sions, or situation of the several parts, so long as the principle of our
said Invention is adhered to. And what we do claim is, namely,―
The peculiar arrangement and application of bars, shafts, or frame
carrying fixed or moveable floats or paddles, as described.
In witness whereof, we, the said David Mushet and Edwin
Whele, have hereunto set our hands and seals, this Seventh
day of February, in the year of our Lord 1854.
DAVID MUSHET. (L.S.)
EDWIN WHELE. (L.S.)