Improvements in Gauges for Shewing the Column of Water Supported by the Pressure of Air or Gas Contained in Pipes, Gasholders, or other Vessels.
Year: 1893

page_text: Date of Application, 26th June, 1893
Complete Specification Left, 21st Mar., 1894-Accepted, 23rd June, 1894
PROVISIONAL SPECIFICATION.
Improvements in Gauges for Shewing the Column of Water
Supported by the Pressure of Air or Gas Contained in Pipes,
Gasholders, or other Vessels.
We, JAMES MILNE Engineer Milton House Works, Edinburgh and HANS
WALTER SCHWABEN, Engineer Milton House Works, Edinburgh, do hereby
declare the nature of this invention to be as follows:-
The present invention has for its object improvements in the construction of gas
pressure gauges to enable them to be taken to pieces for cleaning without inter-
fering with any of the permanently fixed parts of the apparatus. In carrying out
this invention we can permanently fix the brass sockets of the upper part of gauge
to the back plate or shield. We also permanently fix a projecting bracket, guide,
or block, with a screwed socket near the bottom of back plate upon which the
double socket which forms the connection of under part of gauge fits; a tightening
screw passing up through the metal & fitting the screwed socket in fixed part.
These sockets are fitted with washers made of rubber, leather, asbestos or any other
suitable material the result being that tight joints can quickly & easily. be secured
at both ends of the two glass tubes without the trouble of using wax or incurring
the strains which so frequently cause the tubes to fracture.
20th June 1893.
JAMES MILNE.
HANS WALTER SCHWABEN.
COMPLETE SPECIFICATION.
Improvements in Gauges for Shewing the Column of Water
Supported by the Pressure of Air or Gas Contained in Pipes,
Gasholders, or other Vessels.
We, JAMES MILNE, Engineer Milton House Works Edinburgh, and HANS
WALTER SCHWABEN, Engineer Brunswick Street, 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 object of our invention is the improvements in the construction of
gas pressure gauges, which enables them to be taken to pieces for cleaning
purposes without affecting or interfering with any part of the permanently fixed
apparatus.
In the ordinary gauges difficulties are experienced in taking them apart for
cleaning purposes.
According to our invention the glass tubes are not attached or fixed to the metal
ends, but are simply held in position by the bottom end.
The bottom end is forced upwards by means of a screw while it is at the same
time guided in a vertical direction.
This guide or guide block is part of the permanently fixed apparatus and is made
with channels to guide the bottom end into position.
The bottom and top ends have sockets made in them to carry the gauge glasses,
which fit loosely, and are rendered gas or water tight by means of washers made of
rubber, leather asbestos fibre or any other suitable material.
P71

page_text: With our improvements in pressure gauges tight joints can quickly and easily be
secured at both ends of the two gauge tubes without incurring the strains which so
very frequently cause the tubes to fracture.
A general outline view of the pressure gauge is given on drawing Figures 1
and 2.
The details of the construction are also given. See Figures 3. 4. 5 & 6.
The fixed block F. B. Figures 3. 5. is permanently secured to the gauge board,
and is of the form shewn, with channels or guides G. G, Figure 5 made to fit the
rounded portions of the bottom end.
The fixed block may have a hole drilled and tapped in it to carry the screw S.
Figures 4. 6. or a rod may be fixed in or to the block having a screw and nut as
shewn in Figure 6.
The screw S is used for forcing forward the bottom end of the pressure gauge
against the glass tubes thus forming a gas or water tight joint with the aid of the
washers before referred to, while the guide block prevents undue side strain on the
screw while also keeping the bottom end in position.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what
we claim is
The fixed guide block in which the bottom end of the gauge slides as shewn in
Figures 3, 4, 5, 6, by means of which, the bottom of the gauge working in the said
guide block, is forced upwards, until tight joints are formed at the ends of the
glass tubes.
CM1 1004
JAMES MILNE.
H. W. SCHWABEN.