IMPROVEMENTS IN THE ARRANGEMENT AND APPLICATION. OF AUXILIARY SCREW PROPELLERS TO: SAILING VESSELS
Year: 1870

page_text: LETTERS PATENT to Thomas Russell, of Aberdeen, North Britain, for
the Invention of "IMPROVEMENTS IN THE ARRANGEMENT AND APPLICATION.
OF AUXILIARY SCREW PROPELLERS TO: SAILING VESSELS.""
Scaled the 5th August 1870, and dated the 18th February 1870.
PROVISIONAL. SPECIFICATION left by the said Thomas Russell at
the Office of the Commissioners of Patents, with his Petition, on
the 18th February 1870.
I, THOMAS RUSSELL, of Aberdeen, North Britain, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN THE ARRANGEMENT
AND APPLICATION OF AUXILIARY SCREW PROPELLERS TO SAILING VESSELS," to be as
follows: :—
This Invention has for its object improvements in the means of
arranging and applying auxiliary screw propellers to sailing ships or
.vessels so as to enable such ships or vessels to work their way out of
or into port, or out of calms, which are so prevalent at and near the
Equator, and which frequently cause considerable delay to sailing
vessels in those latitudes. By the application of these- improvements

page_text: to sailing vessels they can be propelled until out of the calms they may
get into and thus shorten the time of their voyage, or into and out of port.
According to my improvements the screw propellers are applied on
the sides of the ship or vessel and may be driven by an ordinary steam
winch or any other suitable motive power. The whole of the propelling
gear can be removed at pleasure and the ship can remain in the same
condition as she was before the gear was applied. No holes are required
to be cut in the ship or vessel and no openings are made in the decks,
sides, or bottom to receive the screws or propelling gear. The screw
propellers may be driven by a steam winch, the shafts of which convey
the power to the propeller shafts and propellers through mitre or other
wheels and suitable mechanism. The thrust of the propellers is taken
and the ship is driven forward by means of a peculiarly formed "thrust
bearing." This thrust bearing is so arranged as to allow the propeller
shafts with their propellers being placed-at-any-angle-required, or_one_
of the propellers may be allowed to remain in the water and the other
be raised up out of it, which arrangement may sometimes being of great
importance in working a ship. Auxiliary screw propellers arranged and
applied to the outer sides of a ship in accordance with my improvements
can be readily removed when not required, and the ship left as she was
before the propellers were applied, the propelling gear being capable of
being shipped or unshipped at sea. The peculiar arrangement of the
thrust bearing which at the same time that it takes the thrust of the
propellers allows the angle of the propelling shafts to be altered to any
angle that may be required. The propelling gear may be actuated by
any suitable motive power that may be found most convenient.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas Russell in the Great Seal Patent Office
on the 16th August 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS 30
RUSSELL, of Aberdeen, North Britain, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighteenth day of February, in the year
of our Lord One thousand eight hundred and seventy, in the thirty-third

page_text: year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said Thomas Russell, Her special licence that I,
the said Thomas Russell, my executors, administrators, and assigns, or
such others as I, the said Thomas Russell, my 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 make, 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 THE ARRANGEMENT AND APPLICATION
OF AUXILIARY SCREW PROPELLERS TO SAILING VESSELS," upon the condition
(amongst others) that I, the said Thomas Russell, my executors or
administrators, by an instrument in writing under my, or their, or one
of their hands and seals, should particularly 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 I, the said Thomas Russell, do hereby declaro
the nature of the said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by
the following statement thereof, that is to say:—
This Invention has for its object improvements in the means of
arranging and applying auxiliary screw propellers to sailing ships or
vessels so as to enable such ships or vessels to work their way out of or
into port, or out of calms, which are so prevalent at and near the
Equator, and which frequently cause considerable delay to sailing
vessels in those latitudes. By the application of these improvements
to sailing vessels they can be propelled until out of the calms they may
get into (and thus shorten the time of their voyage) or into and out of
port.
According to my improvements the screw propellers are applied on
the sides of the ship or vessel and may be driven by an ordinary steam
winch or any other suitable motive power. The whole of the propelling
gear can be removed at pleasure and the ship can remain in the same
condition as she was before the gear was applied. No holes are required
to be cut in the ship or vessel and no openings are made in the decks,
sides, or bottom to receive the screws or propelling gear. The screw pro-
pellers may be driven by a steam winch, the shafts of which convey

page_text: the power to the propeller shafts and propellers through mitre or other
wheels and suitable mechanism. The thrust of the propellers is taken
and the ship is driven forward by means of a peculiarly formed "thrust
bearing." This thrust bearing is so arranged as to allow the pro-
peller shafts with their propellers being placed at any angle required,
or one of the propellers may be allowed to remain in the water, and the
other be raised up out of it, which arrangement may sometimes be of
chin
Figure-1-shews_a_transverse section, Figure 2 part of a side view,
and Figure 3 a plan of part of a sailing vessel having auxiliary-scrow
propellers applied thereto in accordance with my improvements.
ៗ
A, A, are two screw propellers one on each side of the vessel, each
propeller A being mounted upon the propeller shafts B, B, which are
actuated by means of the bevil wheels C, C, and horizontal shafts E, E,
which receive motion from a steam winch or engine on the deck of the
vessel or from any other suitable motive power applied thereto; D is 2
a compound bracket or bearing of peculiar form and construction, separate
views of which are shewn on a larger scale at Figures 4 and 5 of the
Drawings, one of such brackets being fixed on each side of the vessel
for supporting the end of the shafts B, B, and E, E, as shewn. The
shaft E is supported by the bracket or bearing D on each side of the 2
bevil wheel C, and upon the outer end of the shaft E a joint or rotating
bearing I is mounted, formed with a socket for receiving the end of the
propeller shaft B which revolves therein. The joint or bearing I is
recessed into and supported by the arm of the bracket D, thus forming
a thrust bearing for receiving the thrust of the screw propeller shaft B,
which by this arrangement is capable of moving partly around the
centre of the horizontal shaft E, so that the propeller shaft and propeller
can be raised or lowered or placed at any desired angle. The pro-
pellers A, A, are guided and held in position by means of rods or
guides G, G, supported in guide rings or cyes H, H1, H2, on each side
of the vessel; K, K, are swivel brackets on the rods G, which thus hold
the propeller.shafts steady. The propellers are raised and lowered when

page_text: THOMAS RUSSELL. (L.S.)