Improvements in Gas and Gaseous Fluid Meters, also applicable as Pumps.
Year: 1895

page_text: Date of Application, 27th Aug., 1895-Accepted, 23rd Nov., 1895
COMPLETE SPECIFICATION.
Improvements in Gas and Gaseous Fluid Meters, also applicable
as Pumps.
I, HEINRICH PAASCH, of 6, Weststrasse, Buckau, near Magdeburg, in the
Kingdom of Prussia, German Empire, 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 :-
My invention relates to a new or improved meter for gases and gaseous fluids,
and has for its object to obtain accurate measurement with a lesser number of
moving parts, and consequently less wear and tear than has hitherto been
attainable.
In order that my invention and the manner of its operation may be clearly
understood, I have hereunto appended a sheet of drawings, of which :-
-
Fig. 1 is a vertical central section upon the line A. B. of Fig. 2 while Fig. 2
is a vertical section upon the line C. D. of Fig. 1.
Fig. 3 is a plan view of one of the piston rods, showing its connection with the
crank of a vertical rod for operating the recording mechanism as hereinafter
explained.
Fig. 4 is a top or plan view of the ports and valves (drawn to a slightly smaller
scale) upon the upper surface of the meter.
1 carry my invention into effect by casting or otherwise producing from any
suitable metal or other material, a cylindrical casing A, divided centrally of its
length or thereabouts by a vertical partition B, which may be either fixed thereto
and therein, or cast or otherwise formed integrally therewith, the said vertical
partition serving to divide A into two chambers C and C1, the upper portion of A
being so constructed as to form a chamber D, into which is fed, under pressure,
through an inlet E, the gas or gaseous fluid to be measured, and in the crown of
the chamber C are inlet ports F and F, and in the crown of the chamber C' like
inlet ports G and G¹, all communicating with the chamber D and formed by the
casting or otherwise of A, the chambers C and C' having also outlet ports H and H¹
respectively, communicating with an exhaust J.
The casing A is also so constructed as to provide, or may be, have rivetted, screwed,
bolted or otherwise connected thereto, circular frames K and K', the former being
located within the chamber C, and the latter in the chamber C, and to these are
connected by bolts a similar shaped circular frames L and L' respectively, the said
frames L and K being so shaped as to form a cylinder for a piston M, and have
between them an internal annular V shaped groove bin which is placed a leather,
rubber composition or other flexible diaphragm or broad washer d, held firmly
between L and K by the bolts a, the said diaphragm or washer also engaging with
a deep groove e in the piston M, and becomes deflected from the vertical by the to
and fro motion of the said piston, the said V shaped groove b permitting such
deflection as shewn in Fig. 1. In like manner the frames L' and K' form a cylinder
for a piston M', and provide an annular groove c, holding a like diaphragm or
washer d' engaging in like manner with an annular groove el in M¹. Or in lieu of
the said grooves e and e¹, 1 may form the pistons M and M' each in two parts so
recessed as to form the equivalents of e, el, when connected together.
The piston M is mounted upon a coned rod N, the free end of which is borne by
and slides in, a hollow projection f, upon the inner surface of a plate O, which may
be bolted or otherwise fixed to, and forms a cover for, one end of the cylindrical

page_text: case A, while in like manner the piston M is mounted upon a similar rod N'sliding
in a hollow projection of a plate O¹ fixed in like manner upon and forming a
cover for the opposite end of A.
The rod N has a recess or aperture through which passes vertically a rod R,
pivotted at j, the upper end of which extends through an aperture,k in the crown of
the chamber C, and engages with the interior of an inverted preferably, rectangular
cup m which slides in a groove n on the upper surface of the crown of C, and from
said cup m extends an adjustable rod S, the opposite end of which is connected to
a valve T which governs the ports G, G₁ and H. In like manner the piston
rod N' has an aperture ¹ with which engages the lower end of a rod R¹ pivotted
at 1, the upper end of which extends through an aperture k¹ and engages with the
interior of an inverted cup m³ sliding in the groove n, and having an adjustable
rod S¹, connected to a valve T' which governs the ports F, F1 and H. This
arrangement will be further understood by reference to Fig. 4. The action of the
apparatus is as follows:-
The gas or gaseous fluid in D entering say, the port. F, into the chamber C,
would force the piston M from left to right, deflecting the diaphragm d, and at
about midway of the stroke of M, the recess h in N would collide with the rod R,
and force the upper end of this from left to right, and this carrying with it the
cup m and rod S, would place the valve T, in a position to open the port G, and
the gas or gaseous fluid passing therethrough into the chamber C¹ would force the
piston M from left to right, deflecting the diaphragm d', and about midway of the
stroke of M¹, the recess ¹ would collide with the lower end of the rod R', and
force the upper end of this from right to left, carrying with it the cup m' and the
rod S¹, which would cause the valve T', to uncover the inlet port F, and open the
port to the exhaust H. The gas or gaseous fluid now entering through F¹ into
the chamber C would force the piston M from right to left, deflecting the
diaphragm d in the opposite direction, and by this movement of M the said gas or
gaseous fluid at the left thereof would be forced through F and H and out at J,
and at about midway of this stroke of M the recess h would again collide with the
rod R and force the upper end of this from right to left carrying with it the cup m
and rod S, which would place the valve T in a position to uncover the port G', and
open the port G to the exhaust H'. The gas or gaseous fluid now entering
the port into the chamber C' would force the piston M' from right to left,
deflecting the diaphragm d' in the opposite direction, and by this movement of M
the said gas or gaseous fluid at the left thereof would be forced through G and H¹
and out at J, and about midway of this stroke of M', the recess ', would again
collide with the rod R' and force the upper end of this from left to right, carrying
with it the cup m² and the rod S', which would place the valve T¹ in a position to
again uncover the port F, and open the port F' to the exhaust H, when the said
gas or gaseous fluid again entering through F into the chamber C, would force the
piston M from left to right as before and force out the gas or gaseous fluid at the
right thereof through and H and out at J, and the recess again operating to
force the upper end of R from left to right would cause the valve T to again
uncover the port G, and open the port G¹ to the exhaust H, and so exhaust the
gas or gaseous fluid to the right of M', through G' and H and out at J, and so on
ad lib.
of
Upon one side of the rods N and N' a bifurcated projection V would be formed
or attached thereto (Figs. 2 and 3) which would each retain loosely the crank
a vertical rod W, each of said rods W passing upward through suitable glands
formed in the casing A. The to and fro horizontal motion of N and N' would
impart an oscillatory motion to the cranks p and consequently the rods W, and by
means of a ratchet wheel or its equivalent, or other suitable gear, placed upon the
upper end of each of the said rods W, an index, counter, or other device may be
operated thereby for accurately registering the quantity of liquid or gas passed
through the apparatus. A suitable cover would be provided for enclosing the
chamber D.

page_text: The principle and the same method of operating my invention is also applicable in
connection with pumps for liquids or gaseous fluids under pressure or for measuring
liquids fed into the apparatus by gravity, and I reserve to myself the right to
employ the same for that purpose.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed I declare that what I
claim is :-
First. In the manufacture of meters for registering the quantity of gas or
or gaseous fluids passed therethrough, the construction, use and application of the
apparatus herein described and shewn, in which two pulsating diaphragms of
flexible material are employed, each operating in connection with separate pistons
in separate chambers, and in which the movements of each of said pistons operating
upon suitable levers or rods, actuate the valve gear of the other, substantially as
herein set forth and shewn.
Second. The improved meter for gases or gaseous fluids consisting of a cylindrical
casing A, having covers O and O¹ and a central partition B, the latter forming
chambers C and C, the said casing being also so cast or otherwise constructed as to
provide a chamber D, ports F, F, G, G, H and H', and internally, frames K
and K', the said frames acting in combination with frames L and L', for the
retention of flexible pulsating diaphragms d and d', by the means of bolts a, and
forming cylinders for pistons M and M having therein, or formed so as to provide
annular grooves e and e', for the diaphragms d, d', the said piston being mounted
upon rods N and N₁ borne by guides and g in the plates O, O¹, and having
recesses h, h¹, by which the movements of N and N' operate the movements of
pivotted rods R and R¹, so arranged that the rod R operates the valve gear m, S, T
of the piston M', while the rod R operates the valve gear m¹, S, T¹, of the
piston M, the whole connected, combined and operating substantially as and for
the purposes herein described and shewn.
Third. In combination with the improved meter set forth in the preceding claim,
the application to either or each of the rods N and N¹ of a bifurcated projection V,
actuating the crank or lever p, of a rod W, for operating the movements of a
suitable index, counter or other device for registering each complete movement of
the pistons M, M', and consequently the quantity of gas or gaseous fluid passed,
substantially as described and shewn by Figs. 2 and 3 of the accompanying
drawings.
Fourth. The application of the principle herein disclosed in the construction of
force pumps for liquids or gases under pressure as set forth.
Dated this 27th day of August 1895.
GEO. THOS. HYDE,
1, Broad Street Buildings, Liverpool Street, London, E.C.,
Agent for Applicant.