Year: 1887

page_text: Date of Application, 1st Jan., 1887
Complete Left, 1st Oct., 1887
Complete Accepted, 31st Dec., 1887.
We JOSEPH EDWARD CHAPPELL, Ordnance Survey Tattershall, near Boston,
Lincolnshire and JOHN CHAPPELL, 24 Hollincross Lane Glossop in the county of
Derbyshire, Cotton Spinner do hereby declare the nature of this invention to be as
follows:-
This invention has reference to certain improvements in the means of propelling
ocean going or 'sea bound vessels, and also has reference to the apparatus employed
therefore.
At the side of the vessel or at any other suitable position are placed steam cylinders
of suitable construction, such steam cylinders being fitted (as ordinary) with pistons,
to each of the said pistons are attached compound or double piston rods, the ends of
which pass out at each end of the said steam cylinders and into other suitably con-
structed cylinders of fac-simile proportions, and which are hereinafter termed the
propeller cylinders, the said piston rods pass through the said propeller cylinders and
propellers, the said propellers fit exactly into the propeller cylinders so as to allow of easy
or facile movement in and out of the same. Water is let into the propeller cylinders by
means of sliding valves, which move in upward and downward directions, so that
when one valve is up the other is down or closed, the one allowing the water a free
passage and the other effectually closing the passage. The said sliding valves are
actuated by racks, moving in upward and downward directions, the said racks are
operated by means of bevel wheels and shaft at one end and cog wheels at the other
end, one of which gives an opposite motion to one of the racks. The said racks are
put in and out of gear by a sliding step with a jaw at each end, the said sliding step
Further with reference to the said
is held in the centre by a spring when not in use.
racks they are so constructed as to move easily in the said jaws, and are of such
length as to just come out of the said jaws when the sliding valves are opened or
closed. Steam is transmitted from a boiler to the steam cylinders aforesaid by a

page_text: suitable arrangement of pipes, in one portion of which are valves for opening or
shutting off the steam when required.
The above relates to the double or compound action, in which the steam cylinders,
propeller cylinders and the other mechanical parts in connection therewith are or may
be placed at each end or side of the said boiler, one portion of the herein described
apparatus is employed for propelling or giving a forward motion, and the other
portion is employed for giving a backing or reversing motion, of course when one
portion is in action the other is out, if not, a reaction or counterbalancing of power or
motion would take place. For the single action only one steam cylinder is employed,
with a propeller cylinder at each end of the same, and with the propeller sliding or
moving in the same as in the double or compound action. The apparatus is put in
and out of gear and in and out of motion by suitable arrangement of means.
Dated this 24th day of March 1887
JOHN E. WALSH,
30, East Parade, Leeds,
Agent for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in the Means of and Apparatus for Propelling
Ships and Boats.
We JOSEPH EDWARD CHAPPELL Ordnance Survey, Tattershall near Boston
Lincolnshire, and JOHN CHAPPELL, 24 Holincross Lane, Glossop, in the county of
Derbyshire, Cotton spinner, 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 has reference to certain improvements in the means of and apparatus
for propelling ships and boats.
At the side of the vessel or at any other suitable position are placed one or more
steam cylinders of suitable construction, each steam cylinder being fitted (as ordinary)
with a piston, to each of the said pistons is attached a piston rod the ends of which
pass out of the said steam cylinders and into or are attached to other suitably con-
structed cylinders of fac-simile proportions, and which are hereinafter termed the
propeller cylinders, the said piston rod passes through the said propeller cylinder and
is attached to the propeller, the said propeller fits exactly in the propeller cylinders
so as to allow of easy or facile movement in and out of the same. In modifying the
apparatus for reversing the motion of the vessel, water is let into the propeller
cylinders by means of sliding valves, which move in upward and downward directions
so that when one valve is up the other is down or closed, the one allowing the water
a free passage and the other effectually closing the passage. The said sliding valves
are actuated by racks moving in upward and downward directions, the said racks are
operated by means of bevel wheels and shaft at one end, and cog wheels at the other
end, one of which gives an opposite motion to one of the racks. The said racks can
be put in and out of gear by a sliding step with a jaw at each end, the said sliding
step is held in the centre by a spring when not in use or by other suitable means.
Further with reference to the said racks they are so constructed as to move easily in
the said jaws, and are of such length as to just come out of the said jaws when the
sliding valves are opened or closed.
For the single action only one steam cylinder is employed with a propeller cylinder
on or at each end of the same. The apparatus is put in and out of gear, and in and
out of motion by any suitable arrangement or means.
DESCRIPTION OF DRAWING.
The drawing represents a front sectional elevation of single action propeller.
A is the propeller cylinder in which works the propeller C. Attached to the
propeller cylinder A is a second cylinder B, the propeller when going out or pro-
pelling allows and assists the water to come into the cylinder B and when returning it
forces the water from the cylinder B and so propels the vessel by the force of the
water expelled from the cylinder at each stroke; D is the steam cylinder, the piston

page_text: rods of the propeller and the steam cylinders are connected together by cotters keys or
other suitable means, this form of propeller should be used as the main propeller, as
it is the most powerful for sea or river and should occupy a position at the end of the
vessel where the screw is usually placed, one two or more of such propellers may
be used.
Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed, we would have it understood that
wo do not limit ourselves to the exact construction or mechanical arrangement herein
shewn and described or to the number of propellers employed but what we do
claim is :-
The arrangement and construction of propellers for boats and other vessels substan-
tially as shewn and described.