Improvements in Hydraulic Motors.
Year: 1890

page_text: Date of Application, 25th Mar., 1890
Complete Specification Left, 29th Dec., 1890-Accepted, 21st Mar., 1891
PROVISIONAL SPECIFICATION.
Improvements in Hydraulic Motors.
I, EDWARD DAVIES, of Cambridge Cottage, Wood Green, Middlesex, Engineer,
do hereby declare the nature of this invention to be as follows:-
This invention relates to the utilization of water pressure by the application of a
round bellows like arrangement in place of a piston and cylinder. According to
this invention the flexible part is attached to a preferably metal top and bottom, the
bottom being held secure and the top rising and falling by the inlet and exit of the
water. To the top is fixed a rod having a usual connecting rod attached to a
crank. The water inlet and exit is through the same port in the bottom and
controlled by a two way valve or cock plug this is attached to a lever operated
by a rod from the driving shaft by eccentric or equivalent means. Or in place of
the means' described for operating the inlet and exit valve for the water,
attach an arm to the rod connected to the top and connect this by a rod to the lever
of valve plug.
may
When using the invention for blowing purposes, such as blowing an organ or
a forge fire I use two bellow arrangements as described for the water, and two
similar ones connected by the rod fixed to the tops these latter bellows are for air,
and are fitted with inlet air valves. To give additional regularity to the working
of the two way plugs I may connect the levers that works them by an endless chain
passing over a pulley wheel.
I may dispense with a connecting rod and attach the rod connected to top direct
to the crank, in this way the flexible part would move similar to the oscillation of
oscillating cylinders.
Dated this 25th day of March 1890.
FREDERIC PRINCE,
Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in Hydraulic Motors.
I, EDWARD DAVIES, of Cambridge Cottage, Wood Green, Middlesex, 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 primarily relates to a manner of using a bellows or flexible sack-
arrangement of waterproof material in place of a cylinder and piston to utilise
hydraulic power and is particularly suitable for the obtainment of small power from
water mains.
To enable this invention to be particularly understood, I will proceed to describe
the same with aid of the accompanying drawings.
Figure 1 is a front elevation of my engine complete with a portion of the lower
part removed.
Figure 2 end elevation of same.
Figures 3 and 4 enlarged detached views of the inlet and exhaust valve.
Figure 5 detached view of a part embodied in Figures 1 and 2.
A represents a suitable frame of cast iron in which is secured a three crank
axle B, these cranks are connected to straight rods C secured to a metal top D
connected to one end of a flexible bag E. This bag can be made of waterproof
canvas, either in a cylindrical shape or as a concertina bellows, the bottom of the
Price dl

page_text: bag E is secured to a foundation F by wire or other known means; and the under-
side of foundation F is the inlet and exhaust valve for the water or air. This
valve consists of a tap plug Gheld in a suitable barrel H which may be made in
one piece with foundation F. This barrel has an inlet for the water or air at and
an exhaust at K. The plug G is made with two straight passages L, M, L being
for the inlet and M for the exhaust. The plug G is operated from the driving
shaft so as to give a snap action to open the exhaust and close the inlet and a
waiting action to open and hold the inlet open in the following manner.
plug has connected to it a lever N normally held by the spring O so that the
exhaust is open, as at Figure 3.
The
This lever N has attached to it a connecting rod P with an angle part Q to be
acted upon by a cam R on driving shaft B; the point of the cam R where it first
engages the underside of the angle part Q is preferred to be rounded as shown
at S, Figure 5. This arrangement enables the inlet of the valve to be open during
outstroke of the engine, but instantly shuts the same and opens the exhaust, and
keeps it open during the backstroke. The flexibility of the bag E enables cross-
heads, and connecting rods to be dispensed, with, the bag adjusting itself to the
throw of the crank in a similar manner to oscillating cylinders. It will be readily
understood that a motor as described could utilise compressed in place of water
under pressure.
Having now particularly described and ascertained the nature of this inven
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. In a motive power engine as described, the combination with a crank axle of
rods C attached to crank and to a waterproof flexible bag E having an inlet and
exhaust valve operated in any suitable manner from the crank axle, as set forth.
2. In a motive power engine as described, an inlet and exhaust valve, consisting
of the barrel H, plug G, runs through same L, M, an inlet J, and exhaust K, and
suitable means to operate the plug G from driving shaft B, substantially as set forth.
3. In a motive power engine as described the combination with other known
necessary parts of the bellows E, having an inlet and exhaust valve attached,
suitably operated, for the purpose set forth.
Dated this 29th day of December 1890.
FREDERIC PRINCE,
1, Quality Court, Chancery Lane, London, W.C., Agent for Applicant.