Improvements in or connected with Hydraulic Air Compressors.
Year: 1899

page_text: COMPLETE SPECIFICATION.
Improvements in or connected with Hydraulic Air Compressors.
I, RUDOLPH JOHANNES WILHELM REINHARD, of 23, Hühnerposten, Hamburg, in
the Empire of Germany, Manufacturer, do hereby declare the nature of this inven-
tion 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 hydraulic air compressors, and has for its object
te render positive and certain the several actions of the apparatus, with the
minimum amount of friction absorbed by the moving parts.
The invention is illustrated in the annexed drawing, in which Figure 1 is a side
elevation of the air compressor; and Figures 2 to 9 are sections, drawn to a larger
scale, and shewing the mechanism of same.
In the drawings, a a¹ are two water reservoirs, in which floats h h are disposed,
for alternately opening and closing the outlets aal to the compressed air receiver.
g represents an oscillating valve for controlling the supply of water to the
reservoirs a a', through the distributing piston valve d and is actuated by the
movement of the floats through connecting rods 6 b¹ on same, and levers c c¹.
This arrangement ensures the positive actuation of the piston valve d, as, in
this case, the movement depends upon the floats, so that the oscillating valve
must be turned when either of the outlets are closed; and the actuation is
g
not dependent upon the pressure water of the channel tubes.
Figures 2 and 3 and 4 and 5, respectively, shew the front and side views for
the two extreme positions of the valve g, and the piston valve d. The latter, is
not arranged vertically, but moves in a horizontal direction. Figures 2 and 3
shew the moment at which the right-hand reservoir has run full of water and the
float closes the air outlet x². When the float h¹ rises, the valve g is revolved
until its motion is arrested by the float coming into contact with the air outlet,
and the piston valve d, is enabled, in the following manner, to open the discharge
for By bringing in and drawing off as the case may be--the water at
either side of the piston valve d, the inlets and outlets may be opened and closed
alternately, and for this purpose the valve g is so arranged, that there is a
hole passing through it, which widens into on the circumference.
widened part alternately connects the inlet and outlet channels m m³ with a
water chamber carried through the valve g (see Figure 8, which represents a
section at zz Figure 3), and therefore allows the water to pass from the main
guiding channel 2 alternately to one side or the other of the piston valve d.
:
This
In order to remove the water which has accumulated on the side of the piston
valve d, towards which the valve is to be moved, and which would hinder the
movement of the valve, the channel m or m², through which the water is discharged
is also connected with the discharge pipe k by the movement of the valve g, the
water finding an outlet through grooves oo, of which o is intended for the
channel m and through the annular groove g' of the valve g, it being thus
able to enter the discharge pipe k through the channel p.
Figure 2 and 3 and 4 and 5 shew the position of reversing mechanism when the
left hand float h closes the air outlet at the top; the valve 9 being turned, and

page_text: the pressure water passing through the channel m behind the piston valve d,
drives the latter over to the right side, the water on the right hand side finding its
way out through the groove o¹, into the annular groove gl, and is thus able to
run through the latter and the channel into the discharge pipe k. As an inlet
for the water there is the channel, which branches off to the right and left, so
that the branch inlets may alternately be opened and closed by the piston
valved. From these inlets ¹ the water now passes through channels rrinto
the water reservoirs a a', whilst these channels at the same time act as outlets
from the cylinders, in this way that, when the channel r is used as an inlet, the
water runs off on the other side through the channel r¹.
The main outlet for the water is through the channel k, which is connected
by means of the piston valve d alternately with the channels r and r¹, as will be
seen from Figure 2 and 4.
At all points where there are inlets or outlets of the water into (or from) the
cylinder in which the reversing piston is moving backwards and forwards, there
are grooves arranged in the entire circumference, in order to allow the piston
valve d to move with the greatest possible ease, and thus so increase the useful
effect of the apparatus to a considerable extent.
Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed, I declare that what
I claim is:-
1. A hydraulic air compressor, characterised by floats (h h¹) which alternately
open and close air channels (a) to the receiver, said floats being connected with
an oscillating valve (g) by means of rods (6 61), said valve in its movement allow-
ing the pressure water to flow through suitable channels to one side or other of a
piston valve (d), and the water on the opposite side of the piston being carried
off by means of said valve (g) and in connection with which the inlets and outlets
for the water to the reservoirs a and a', are opened and closed, for the purposes
set forth.
2. The hydraulic air compressor having parts constructed and adapted to operate
particularly as shewn in and set forth with reference to the several figures of the
drawings.
Dated this 14th day of October 1899
RUDOLPH JOHANNES WILHELM REINHARD.
By Cheesbrough & Royston,
Agents for the Applicant, 15, Water Street, Liverpool.