Improvements in Reversing Appliances for Iron and Steel Ships Propelled by Fluids.
Year: 1890

page_text: Date of Application, 15th Aug., 1890.
Complete Specification Left, 15th May, 1891-Accepted, 20th June, 1891
PROVISIONAL SPECIFICATION.
Improvements in Reversing Appliances for Iron and Steel Ships
Propelled by Fluids.
JAMES SIMPSON of 8 Rumford Place Liverpool in the County of Lancaster
Alkali Manufacturer, do hereby declare the nature of this invention to be as
follows:-
This invention has reference to appliances for marine propulsion by means of a
series of films of water air or other fluid flowing along the immersed surface of the
ship or vessel. The object is to enable a ship or vessel thus propelled to move
astern as well as ahead. This accomplish by a mechanical arrangement
for directing the flow of the propelling fluid either backwards or forwards as
required.
For this purpose I employ orifices in the shell of the vessel along the flat of
floor opening to the distributing chamber or passages for the propelling fluid of
such number and size as shall be adequate for the delivery of the required power.
I fit these orifices with balanced valves by means of which the propelling fluid can
be directed either aft or forward as required.
For altering the position of the aforesaid valves! employ hydraulic pressure
(which may be obtained by means of a donkey pump in the engine room) to act
on and move reciprocating or oscillating pistons or plungers and actuate two or
more valves. By connecting the donkey pump through two mains to a series of
motors the reversing valves can all be placed forward or aft as required according
to the main used for delivery and for exhaust.
In order to reduce the loss of power from friction preferably introduce the
propelling fluid at the forward end of the distributing chambers or passages when
going forward, and at the after end of the said passages when going astern.
Dated this 14th day of August 1890
Per pro J. T. KING,
J. Johnson,
Agent.
COMPLETE SPECIFICATION.
Improvements in Reversing Appliances for Iron and Steel Ships
Propelled by Fluids.
I JAMES SIMPSON of 8 Rumford Place Liverpool in the County of Lancaster,
Alkali Manufacturer, 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 appliances for enabling vessels propelled by means of
a fluid flowing along the immersed surface to move astern as well as ahead.
This
I accomplish by a mechanical arrangement for directing the flow of the propelling
fluid either backwards or forwards as desired.
For this purpose I employ a series of orifices in the shell of the vessel along
the flat of floor opening to distributing chambers or passages for the propelling
fluid of such number and size as shall be adequate for the delivery of the required
power. I fit these orifices with balanced valves by means of which the propelling
Huid can be directed either aft or forward as required.
For altering the position of the aforesaid valves 1 preferably employ hydraulic
pressure which may be obtained by means of a donkey pump in the engine room
Pin 1

page_text: to act on and move reciprocating or oscillating pistons or plungers and actuate
two or more valves. By connecting the donkey pump through two mains to a
series of motors the reversing valves can all be placed forward or aft as required
according to the main used respectively for delivery and for exhaust.
In order to reduce the loss of power from friction I preferably introduce the
propelling fluid at the forward end of the distributing chambers or passages
when going forward--and at the after end of the said passages-when going
astern, but this is not absolutely essential, as the fluid will naturally go in
the direction of least resistance which depends on the position of the valves.
In order that my invention may he readily understood I have appended a
sheet of explanatory drawings, where Fig. 1 is a transverse section and Fig. 2
a longitudinal section of so much of a ship or vessel as is necessary to show
my reversing appliances. Fig. 3 is a vertical section of a motor suitable for
being attached to the valve spindles so as to actuate the valves. Fig. 4 is an
clevation of a modified form of motor and connections for actuating the valves.
a is the skin of the ship, series of fluid discharge orifices, c balanced valves
free to be oscillated on spindles d, e passages leading fluid from any suitable motor
to the orifices b, motors for moving the valves c into position to direct the fluid
being discharged either abead or astern, the direction of flow of fluid into the
passages e should also be reversed at the same time as the valves.
With two sets of apparatus as shown in Fig. 4 one for each side of the ship or
vessel, the fluid on one side may be directed ahead, and on the other side astern
to assist the rudder in turning the said ship or vessel.
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. In vessels propelled by fluids applied through orifices in the immersed
surface claim the use of balanced valves for directing the said fluid backwards
or forwards as desired.
Second. The combination of hydraulic motors for altering the position of the
valves in the manner and for the purpose set forth.
T
1 1
Per pro J. T. KING,
J. Johnson,
Agent.