Improvements in Water Motors.
Year: 1890

page_text: Date of Application, 18th July, 1890-Accepted, 20th Sept., 1890
Improvements in Water Motors.
I JOHN EVELYN LIARDET of 37 Russell Road Kensington in the County of
Middlesex, Gentleman 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 :-
The object of this invention is the utilization of the power stored up in tidal
and other water for driving and other purposes by means of the improved motors
hereafter described.
According to this invention I construct water motors with an outer casing having a
rotating wheel therein furnished with vanes floats or buckets suitably curved to catch
and hold the water to the best advantage, the water inlet is at the side or sides of the
casing and the outlet for the tail water at the bottom or sides of the said casing
according to the shape and curvature of the floats vanes or buckets. I also in some
cases provide guide vanes in the casing suitably curved to direct the incoming water
on to the wheel or wheels.
And in order that my invention may be better understood I will proceed to explain
the same with reference to the accompanying sheets of drawings in which Fig. 1.
represents section of a water motor constructed according to this invention.
Fig. 2 plan of same partly in section.
Figs. 3. 4 and 5 details of buckets hereafter alluded to.
Fig. 6. section of a modified form of motor also constructed according to this
invention.
Fig. 7. plan of same partly in section showing the curvature or pitch of the vanes.
Figs. 8. 9. 10. details of buckets and attachment hereafter alluded to.
Similar letters of reference indicate the same parts throughout all the figures of
the drawings.
a. is casing of motor provided with an inlet pipe, pipes or troughs b and in some
cases with guide vanes to guide the inflowing water to the buckets of the rotating.
wheel. These inlets may be of any desired number and arranged in any position
around and through the casing. The rotating wheel is composed of a spider frame as
shewn at d keyed to the shaft e and attached by rivetting or screws or in any other
convenient manner to the rings fand g the outer buckets h. h are rivetted or screwed
to the bars i. j. (see Fig. 3. 4 and 5) the screwed ends of which bars pass through
the rings f and g. and are secured thereto by nuts the inner buckets k. k are secured
in the same manner to the ring f. and the spider d.
In the modification shown at sbeet 2 of the accompanying drawings 7 is the
casing m water inlet. The wheel is composed of a spider n' keyed or attached firmly
to the shaft e. rings n and p.pl and buckets s. one of which is better shewn in detail at
Figs. 8 and 9 these buckets which are of peculiar shape having a twist somewhat
resembling the blades of a screw propeller are screwed or rivetted to the screwed
bars q. r. as above one of which is shewn in Fig. 10 the bars are inserted into holes
in the rings and spider and secured thereto by nuts. Fig. 8 shews elevation of
buckets. Fig. 9 section of same on the line A. B. Fig. 8.
In the motor shewn on sheet 1 the water enters at b. and escapes at c.
In the motor shewn in sheet 2 the water enters at m and escapes at x. x. from the
bottom of the casing.
It is to be noted that the outlet should be at least one half larger than that of the
inlet if only one, and the sum of all the inlets if more than one.
The shaft e. may be supported by a suitable pivot bearing but I prefer to use a ball
bearing for this purpose as shewn at Fig. 7.
The supply of water to the motors may be regulated by a suitable sluice or gate
for closing the inlets or guide ports as is usual in turbines.
ונD

page_text: Where the stream admits of such arrangement I use a series of wheels so that the
tail water of the first wheel shall pass through the entire series.
In conclusion I would remark that I am aware that wheels with curved buckets
rotating in a casing fitted with guide vanes and known under the name of turbines
have been used prior to my invention, I do not therefore claim generally the use of
such wheels and casings..
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declaro that what
I claim is :-
I. The improved water motor (or turbine) having a wheel or wheels consisting of
two or more concentric rings having between and attached to them two sets of vanes
or buckets rotating in the casing all substantially as described and shewn in sheet 1
of the accompanying drawings.
II. The improved water motor substantially as described and shewn on sheet 2 of
the accompanying drawings that is to say:-apparatus similar to that claimed in
claim I. but the wheel having the vanes or buckets made with a twist somewhat
resembling the blades of a screw propeller.
III. In a water motor actuated by the impact of the water on the vanes or
buckets admitting the water to the said vanes or buckets at two or more points
round the circumference or periphery of the rotating wheel substantially as described
and shewn on sheet of the accompanying drawings.
Dated this 18th day of July 1890
BROWNE & Co.,
60, Chancery Lane, Agents for Applicant.