IMPROVEMENTS IN FLUID METERS OR MOTORS
Year: 1887

page_text: Date of Application, 19th Feb, 1887
Complete Left, 18th Nov., 1887
Complete Accepted, 20th Dec. 1887
I HERBERT FROST, of Tipping Street Ardwick Manchester, in the County of
Lancaster, Engineer and Manager of the Manchester Water Meter Company Limited,
do hereby declare the nature of said Invention for IMPROVEMENTS IN FLUID METERS
OR MOTORS, to be as follows :—
My invention consists in certain improvements on the Invention for which Letters
Patent No. 2720 were granted to me on the 31st day of May 1883 the object of my
Invention being to simplify the construction and arrangement of the valvular
apparatus and to reduce the number of parts.
In carrying out my Improvements I substitute for the two supplementary cylinders
and the two pistons described in the Specification to the said Patent a single supple-
mentary cylinder with a piston for actuating the cover of the main valve through
which the water or other fluid is admitted to the main cylinder or measuring chambers.
The cover of the supplementary valve is actuated by the piston of the main cylinder in
the manner described in the aforesaid Patent and the water or other fluid under pressure
instead of being admitted first to one supplementary cylinder and then to the other as
in the Patent previously referred to is in this arrangement admitted first to one end
and then to the other of the single supplementary cylinder whereby the piston of the
supplementary cylinder is moved to and fro and uncovers first one port and then the
other of the main valve.
The supplementary cylinder its valve ports the main valve ports and the passages in
connection therewith are all cast together in one piece.

page_text: I HERBERT FROST of Tipping Street Ardwick Manchester in the County of
Lancaster Engineer and Manager of the Manchester Water Meter Company Limited
do hereby declare the nature of said Invention for IMPROVEMENTS IN FLUID METERS
OR MOTORS and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
My invention consists in certain improvements on the Invention for which Letters
Patent No. 2720 were granted to me on the 31st day of May 1883 and also on the
Invention for which Letters Patent No. 1619 were granted to me on the 7th day of
May 1874 the object of my Invention being to simplify the construction and arrange-
ment of the valvular apparatus and to reduce the number of parts.
In carrying out my improvements I substitute for the two supplementary cylinders
and pistons described in the first named Patent a single supplementary cylinder with
a double acting piston for actuating the cover of the main valve and in place of making
the supplementary cylinder and the main valve with their ingress egress and discharge
ports and passages in separate parts as described in my aforesaid Patent No. 1619 of
1874 I now cast the supplementary cylinder with its valve ports the main valve ports
and the passages in connection therewith all in one piece by which improved
construction I reduce the number of parts economise space and also lessen the cost
of manufacture.
And in order that my Invention may be fully understood and readily carried into
effect I will describe the accompanying two Sheets of Drawings reference being had to
the figures and letters marked thereon.
Figure 1 is a sectional elevation on the line A B, Fig. 3. Fig. 2 is a sectional
elevation on the line CD Fig. 3. Fig. 3 is a plan with the cover removed of a meter
to which my improvements are applied and Figs 4 and 5 are detail views of the casting
in which are contained the supplementary cylinder its valve ports and passages and
the main valve ports and passages.
In Figures 1 to 3 a designates the casing in this instance shown made in three.
parts, a the inlet pipe and a² the outlet pipe b the measuring cylinder c the main
piston c¹ the piston rod c² c³ the collars thereon d the valve mover and e the recessed
valve cover.
The block shown detached in Figs. 4 and 5 is the piece or casting which embodies
according to my Invention as already stated the supplementary cylinder g its valve
ports n n n and the passages in connection therewith the main valve ports h³ h² and
their passages.
In the supplementary cylinder g is fitted the double acting piston k the rod k¹ of
which actuates the recessed valve cover 7 and is guided by a piece m secured to the
block f. The valve cover is fitted over and controls the main valve ports of which
the port h is in direct communication by the passage b' with the bottom of the
measuring cylinder 6 the port h¹ communicates by the passage 63 with the top of the
measuring cylinder and the port 2 communicates by the passage a³ with the outlet
pipe a².
The supplementary valve ports which are controlled by the valve cover e are
lettered n n n² of which the port n leads to the top and the port n' to the bottom of
the supplementary cylinder 9. while the port n² leads by the passage a³ to the
outlet a

page_text: When the parts are in the positions indicated by the Drawings and fluid under
pressure is admitted to the meter through the inlet a' it flows through the open port h
and passage bl to the bottom of the measuring cylinder and also through the op
open
port n into the top of the supplementary cylinder g. The fluid under pressure thus
admitted to the bottom of the measuring cylinder b forces the piston e upwards and as
the piston nears the end of its stroke the collar c² catches the projection on the valve
mover d and so lifts the valve cover e thereby covering the port n and uncovering the
port n' through which the fluid under pressure flows into the bottom of the supple
mentary cylinder g raises the piston k therein thereby expelling the fluid from the top
of the cylinder through the port n under the recessed valve cover e through the port n²
and out through the passage a³ and outlet a² simultaneously the piston rod k¹ lifts the
valve cover so as to close the port h and open the port h¹. The fluid under pressure
then flows through the open port ₁ and passage 6 into the top of the measuring
cylinder 6 thereby reversing the stroke by forcing down the piston c and expelling the
fluid below the piston up through the passage b' port h under the recessed valve
cover through the port h² and passage a³ to the outlet a². As the piston c nears the
end of its downward stroke the collar c³ thereon through the valve mover d reverses
the valve cover e uncovers the port n and closes the port n¹ so that the fluid under
pressure flows into the top of the supplementary cylinder g forces down the piston k
thereby reversing the valve cover to open the port h and admit fluid to the bottom
of the measuring cylinder and closes the port h¹ simultaneously expelling the fluid
below the piston k from the supplementary cylinder g through the port n¹ under the
valve cover e through the port n² and passage a³ to the outlet a² the fluid under
pressure admitted to the bottom of the measuring cylinder b causes the piston c to
again rise and reverse the stroke as before described and as the piston c rises the fluid
above it is expelled through the passage b² port / under the recessed cover / through
the port and passage a³ to the outlet a².
The piston rod of the measuring cylinder will be alternately forced up and down
and the valves reversed as described so long as fluid under pressure is admitted to
the meter.
The piston rod c² or other moving part is suitably connected to or arranged to
operate the index or indicating mechanism.
In the meter shown the supplementary cylinder is placed vertically it is obvious
however that it may be arranged in a horizontal or other position.
The apparatus may be used as a motor by prolonging the piston rod c¹ and bringing
it through a stuffing box in the cover or in the cylinder bottom and suitably connecting
it to the part to which the power is intended to be applied.
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
1. The improvements in fluid meters or motors consisting essentially in casting
together in one piece the supplementary cylinder its valve ports the main valve ports
and the passages in connection therewith substantially as and for the purposes herein
described and as illustrated by the Drawings annexed.
2. The supplementary cylinder its valve ports and passages and the ports and
passages for the main valve all cast together in one piece and combined with the
general arrangement of parts the whole forming the improved fluid meter or motor
substantially as herein described and as shown on the accompanying Drawings.
H. B. BARLOW,
17, St. Ann's Square, Manchester,
Agent for Applicant.