Improvements relating to Screw-propellers and to Apparatus to be used in connection therewith.
Year: 1890

page_text: Date of Application, 17th Mar, 1890
Complete Specification Left, 17th Dec., 1890-Accepted, 7th Feb., 1891
PROVISIONAL SPECIFICATION.
Improvements relating to Screw-propellers and to Apparatus to be
used in connection therewith.
I, JOSSE-EGIDE SPANOCHE, of Cappellen-lez-Anvers, in the Kingdom of
Belgium, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to screw-propellers and to apparatus designed to be used
in connection therewith.
The improved propeller has a nave or boss which is composed of four separate
parts.
Inside the first and second of these parts are placed the tenons of the blades and
racks, the former consisting of a plate, a neck and a toothed pinion. The third
part constitutes a spherical cap which is screwed upon the first part for the purpose
of covering the end of the propeller shaft and a cottar on the same so as to prevent
marine plants from becoming entangled in it. In the end of this cap may be a
square hole for the insertion of a key by which the cap is screwed home.
The fourth part which is made of bronze or the like and which is secured by
bolts upon the aforesaid second part is introduced into the hole in the stern to
allow of the passage of the said racks. It is surrounded by a hollow grooved
cylinder of bronze which serves as a movable bearing in the aforesaid hole.
Each of the propeller blades is composed of a plate or foot having a projection
which engages with a mortice in one of the said tenons and two armatures upou
which are rivetted curved sheet-iron plates and which serve to give solidity to the
propeller blades. The aforesaid plate and armatures are made of a single piece of
wrought iron. The racks meet and are fixed to a rotating disc. This disc consists
of two plates of symmetrical form which are bolted together and at the joint of
which is provided a space wherein conical rollers and key are placed. These
rollers are made of steel and serve to lessen the friction in a groove formed in a
tube or sleeve. This tube or sleeve consists of several parts and can slide upon
a tubular part, a tight joint being made between the parts by means of packing
material.
The rotatory disc above referred to turns with the propeller shaft as the said key
slides in a groove formed in this shaft. One of the parts of the above-mentioned
tube or sleeve ends in a stuffing box so that a perfectly tight joint is obtained in
connection with this tube or sleeve. The said part is provided with a stop cock
and a reservoir containing a lubricating oil which oil is drawn into the interior of
the above-mentioned tube or sleeve each time when, by the backward movement
of the parts of the latter, the size of the free space therein is augmented. This
oil, not being able to return to the aforesaid reservoir will he distributed over all
the interior parts of the apparatus each time when to the said parts of the tube or
sleeve is imparted a forward movement, which lessens the free space in the same,
so that a portion of the liquid contained therein (water and oil) will leave through
the open passages provided, such as the grooves in the above-mentioned cylinder
extending through the hole in the stern, the spaces for the racks, the cavities for
receiving the tenons at the bases of the propeller blades, and the square hole in the
above-mentioned spherical cap.
To produce the sliding motion of the said parts of the tube or sleeve on the
tubular part it is sufficient to turn a hand-wheel which is keyed upon a fixed shaft
supported in brackets. This shaft is provided with a screw thread which engages
with a mut secured upon one of the parts of the said tube or sleeve so that when
the wheel is revolved to the right hand side a backward movement of the tube or

page_text: sleeve will take place and when it is revolved to the left hand side a forward move-
ment will be effected. In these two movements the rotating disc is carried away
and as the racks are attached thereto, they will perform the same movements, work
the pinions at the bases of the propeller blades which are thus set in motion.
Through the medium of an endless chain the aforesaid wheel can be operated
from any part of the ship: and the position of the propeller blades can be ascer-
tained by means of a dial the hand of which is actuated by a worm and worm
wheel.
By the use of this improved propeller the following advantages are ensured,
that is to say, a higher speed of the ship: a position of the propeller blades which
is advantageous for all states of the sea; the simplification of the engines; the
instantaneous reversal of the motion of the ship without reversing the *
engines; the sailing under canvas without having the motion of the ship impeded
by the propeller, the facility of stopping in a place without anchoring and without
stopping the motion of the engines; the rapid backward movement of the ship;
and the simplification of the orders to be given to the engineers and the stokers.
Dated this 17th day of March 1800
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements relating to Screw-propellers and to Apparatus to be
used in connection therewith.
I JOSSE-EGIDE SPAXOGIE, of Cappellen-lez-Anvers, in the Kingdom of
Belgium, Engineer, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
This invention relates to screw propellers and to apparatus designed to be used
in connection therewith.
In the accompanying drawing I have shown how my said invention may be
conveniently and advantageously carried into practice.
The improved propeller has a nave or boss which is composed of four separate
parts A, B, C, D.
Between the two parts B and C are arranged the ends of the propeller blades in
such a manner as to be capable of rotation. The said ends of the blades consist of
a flange E a neck O and a toothed pinion F. A spherical cap A is screwed upon the
part B for the purpose of covering the end of the propeller shaft and a cottar (i on
the same so as to prevent marine plants from becoming entangled in it. In the
end of this cap may be formed a square hole for the insertion of a key by which
the cap is screwed home.
The part D which is made of bronze or the like and which is secured by bolts
to the aforesaid part C, is introduced into the hole in the stern so as to allow of
the passage of the racks II. It is surrounded by a hollow grooved cylinder i of
bronze which serves as a movable hearing in the aforesaid hole.
Each of the propeller blades is composal of a plate or foot having a projection L
which engages with a mortice in one of the said tenons, and two armatures upon
which are rivetted curved sheet iron plates and which serve to give solidity to the
propeller blades. The aforesaid plate and armatures are made of a single piece of
wrought iron. The racks H incet and are fixed to rotating disc P. This dise
consists of two plates of symmetrical form which are bolted together and at the
joint of which is provided a space wherein conical rollers Q and a key Kare
placed. These rollers are made of steel and serve to lessen the friction in a
groove S formed in a tube or sleeve T. This tube or sleeve consists of several
parts 1, 2 and 3 and can slide upon a tubular part, a tight joint being made between
the parts by means of packing U.

page_text: The rotary dise P above referred to turus with the propeller shaft as the said
key slides in a groove V formed in this shaft X. The part 3 of the above mentioned
tube or sleeve T ends in a stuffing-box Y so that a perfectly tight joint is obtained
in connection with this tube or sleeve. The said part is provided with a stop
cock Rand a reservoir S¹ containing a lubricating oil which oil is drawn into the
interior of the above-mentioned tube or sleeve each time when, by the backway
movement of the parts of the latter, the size of the free space therein is augmented.
This oil, not being able to return to the aforesaid reservoir will be distributed over
all the interior parts of the apparatus each time when to the said parts of the tube
or sleeve is imparted a forward movement which lessens the free space in the same,
so that a portion of the liquid contained therein (water and oil) will leave through
the open passages provided, such as the grooves in the above-mentioned cylinder I
extending through the hole in the stern the spaces for the racks, the cavities for
receiving the tenons at the bases of the propeller blades, and the square hole Q¹ in
the above mentioned spherical cap A.
To produce the sliding motion of the said parts 1, 2 and 3 of the tube or sleeve T
on the tubular part + it is sufficient to turn a hand-wheel Z by the handle A¹ which
is keyed upon a fixed shaft B' supported in brackets C. This shaft is provided
with a screw thread D' which engages with a nut E' secured upon the part 2 of
the said tube or sleeve T, so that when the wheel Z is revolved to the right hand
side a backward movement of the tube or sleeve will take place and when it is
revolved to the left hand side a forward movement will be effected. In these two
movements the rotating dise P is carried away and as the racks I are attached
thereto they will perform the same movements, work the pinions at the bases of the
propeller blades which are thus set in motion.
:
Through the medium of an endless chain F¹ the aforesaid wheel can be operated
from any part of the ship and the position of the propeller blades can be
ascertained by means of a dial the hand of which is actuated by a worm and worm
wheel. By the use of this improved propeller the following advantages are
ensured that is to say a higher speed of the ship; a position of the propeller
blades which is advantageous for all states of the sea; the simplification of the
engines, the instantaneous reversal of the motion of the ship without reversing the
steam engines, the sailing under canvas without having the motion of the ship
impeded by this propeller, the facility of stopping in a place without anchoring and
without stopping the motion of the engines; the rapid backward movement of the
ship and the simplification of the orders to be given the engineers and the stokers.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed I declare that what
I claim is :-
First. The combination with each other of the several parts A B C D of the
nave or boss of the propeller, constructed and arranged as above described.
Second. The construction of the propeller blades M N the ends of which are
provided with propeller blades formed in the seats O formed between the parts B
and C of the nave or boss of the propeller.
Third. The form of the rack H for enabling it to be passed into the hole in the
stern post through the space occupied by the bearing.
Fourth. The production of the sliding movement of the tube or sleeve T by
means of the screw-threaded shaft B' D for the purpose of operating the propeller
blades as above described.
Fifth. The lessening of the friction of the rotary disc P P by the employment
of conical rollers Q and steel rings O' in the groove S as above set forth.
Sixth. The arrangement of the actuating wheel for the apparatus at any part of
the ship motion being transmitted from the said wheel to the apparatus by means
of an endless chain Fi
Seventh. The employment of the dial-plate for inlicating the position of the
propeller blades.

page_text: Eighth. The automatic lubrication of the interior of the apparatus.
Ninth. The arrangement of the hollow fluted and movable cylinder I in lieu of
the bearing in the hole of the stern post.
Tenth. The means for preventing the rotation of the part 1, 2, 3 of the tubular
casing T.
Eleventh. The rotary dise consisting of two symmetric plates P. Plas above
described.
Twelfth. The construction and arrangement of the various parts of the apparatus
shown in the accompanying drawing substantially as and for the purpose above
specified.
1
1
1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.