Improvements in Dry Gas Meters.
Year: 1895

page_text: PROVISIONAL SPECIFICATION.
Improvements in Dry Gas Meters.
I JAMES MILNE, Milton House Works, Edinburgh, Engineer, do hereby
declare the nature of this invention to be as follows:-
My invention consists in the construction of a composite dry gas meter, the case
consisting partly of tin plate and partly of cast iron. This has partially been done
by various makers, but the construction of the ordinary tin case dry meter has
always been materially departed from. I use the present form of dry gas meter
substantially as at present in use merely substituting 2 cast iron covers for the
present tin plate bottom and lower half of the sides and ends. These covers will
be screwed together with the present division plate of meter between them.
I make the inlet and outlet tubes preferably of incorrodible metal. I may either
solder on the valve cover and top as at present or make them of cast iron, and fix
them with screws for easy removal.
Dated this Tanth d of Tacombe 100%
I, JAMES MILNE, Engineer, Milton House Works, Edinburgh, 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 nature of my invention is the construction of a composite dry gas meter in
which the case consists partly of tin-plate and partly of cast iron, in order to
protect dry meters from rust at the parts where they usually give way when used
in damp places, and yet to preserve as far as possible the form commonly used in
the ordinary tin-plate dry gas meter.
The ordinary dry gas meter is encased in tin plates all over, and in my invention
I substitute for the bottom and under portion of front, back, and sides, cast iron
cases, and also use inlet and outlet tubes of brass or other metal, of suitable shape
and form, making the remainder of the meter of tin-plate in substantially the usual
manner.
The top of the meter and the valve chamber inside same may also be enclosed
by cast iron plates to allow of access without unsoldering any portion.
In the drawing, Figures 1, 2, 3, & 4, A A shews the cast iron cases forming as
above described the bottom, back, front, and part sides joined together about the
division plate by screws or bolts, the cases being provided with a suitable groove
or joint B B, Figures 1, 2, & 3, for the purpose of connecting this cast iron case
to the tin-plate gallery around the upper portions of the meter.
I make the flange of the cast iron cases, CCCC, Figures 2, 3, & 4, so that it
continues all round three sides of the division plate, but keep only a portion of
this flange upon the outside of the case so as to permit of the fixing of the screws
ונט..D

page_text: or bolts and nuts to connect the two portions of the case and the centre division
plate, the remainder of the flange I fix upon the inside of the case.
The joints may be made with paint, putty, cement, or other suitable material.
The inlet and outlet connections DD, Figures 1 & 2, may be of brass or other
metal and soldered screwed or fixed by other means to the side of the upper or
gallery portion of the meter.
I may either solder on the top E E Figures 1, 2, & 3, & valve box cover F,
Figures 2 & 3, as at present is done with the tin-plate cased meters, or I
may make
them of cast iron or other metal and fix them with screws or other means for easy
removal.
I provide a tinplate flange G G, Figures 2, 3, & 4 at bottom of division plate
for the purpose of fixing thereto the steps for flag wire and for motion wires.
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.) In a dry gas meter the substitution of cast iron case in two pieces joined
by a flange partially inside and partially outside for the bottom and under portion
of back, front, and sides, using the upper portion in substantially the same form as
in ordinary tin-plate meters.
.
(2.) In a dry gas meter the application of cast iron or other metal inlet and
outlet tubes to the ordinary form of tin-plate upper portion of a dry gas meter.
(3.) In a dry gas meter the general construction and combination of parts and
materials constituting my improved dry gas meter substantially as described in
the foregoing specification and illustrated in the accompanying drawings.
Dated this Fifth day of September 1896.
JAMES MILNE,