Improvements in Pressure Gauges.
Year: 1891

page_text: Date of Application, 5th May, 1891
Complete Specification Left, 4th Feb., 1892-Accepted, 5th Mar., 1892
PROVISIONAL SPECIFICATION.
Improvements in Pressure Gauges.
ALERED SUITER 2, Como Road, Forest Hill Kent Mechanical Engineer do
hereby declare the nature of this invention to be as follows:-
The ordinary circular dial pressure gauge fixed in position is suitable for
indicating the varying pressures in steam boilers and the like, but in special cases,
such as, testing the pressure in compressed gas vessels, they are cumbersome they
contain a fragile hand and glass, and at very high pressures they have been known
to burst with serious consequences.
The object of this invention is, to so construct a pressure gauge, that it shall be
suitable for the pocket, that it shall not contain either fragile hand or glass to be
broken, and that it shall not have anything in it liable to burst at the highest
pressures.
In carrying out my invention, upon any usual fitting for connecting to the vessel
to be tested, I fix a tube, in which slides a rod, working through a gland, or
leather, one end being exposed to the pressure in the vessel, so forming a plunger.
The other end of the rod or plunger engages a suitable spring to balance the
pressure in the vessel. This end of the rod or plunger also engages a pointer
which indicates the pressure contained in the vessel upon a figured scale, on the
outside casing, or any other suitable position. Such indication being obtained
from the extension or compression of the aforesaid spring, the pointer taking up a
position according to the pressure in the vessel.
The pointer instead of being fixed on the aforesaid rod or plunger, may be fixed
on a suitable slide, which the plunger pushes into position on the scale, and
leaves there after the pressure is relieved, so that the indication can be read off at
leisure.
1
.
Dated this 5th day of May 1891.
COMPLETE SPECIFICATION.
Improvements in Pressure Gauges.
ALFRED SUITER 2 Como Road Forest Hill, Kent Mechanical Engineer 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 ordinary circular dial pressure gauge, fixed in position is suitable for
indicating the varying pressures in steam boilers and the like, but in special cases,
such as testing the pressure in compressed gas vessels, they are cumbersome, they
contain a fragile hand and glass, and at very high pressures they have been known
to burst, with serious consequences.
The object of this invention is to so construct a pressure gauge, that it shall
be suitable for the pocket, that it shall not contain either fragile hand or glass
to be broken, and that it shall not have anything in it liable to burst at the highest
pressures.
In carrying out my invention, upon any usual fitting for connecting to the
vessel in which the pressure of gas is required to be known-I fix a tube in
which slides a rod, working through a packed gland or cup leather, one end of
such rod or plunger being exposed to the pressure in the vessel, so forming a
plunger

page_text: The other end of the rod or plunger engages a suitable spring to balance
the pressure in the vessel. This end of the rod or plunger also engages a
pointer which indicates the pressure contained in the vessel upon a figured scale on
the outside casing, or any other suitable position. Such indication being obtained
from the extension or compression of the aforesaid spring, the pointer taking up a
position according to the pressure in the vessel.
The pointer instead of being fixed on the aforesaid rod or plunger, may be fixed
on a suitable slide, which the plunger pushes into position on the scale, and
leaves there after the pressure is relieved, so that the indication can be read off at
leisure.
That my invention may be more clearly understood, reference may be made to
the accompanying drawing, being a sectional elevation of a pressure gauge con-
structed according to my invention. A represents one of the usual fittings for
connecting to the gas vessel, in which the pressure of gas is required to be known.
B is the tube in which slides a rod or plunger, c working through a gland or
leather d. e is an antagonistic spring. is a pointer or sliding tube for indicating
the pressure, contained in the vessel, upon the figured scale g, through the inter-
mission of the plunger head h, and cross pin i, working in the vertical slots j.
CC are wings for getting sufficient purchase for connecting to gas vessel, and k is
a filter to prevent the rod or plungere from corroding.
The vertical slots are made long enough so that the plunger head h, will rise far
enough to allow the bottom end of plunger, c, to pass out of the gland or leather, d,
so acting as a safety valve in case of any excessive rise in pressure through the
gases chemically combining in the lower portion of the fitting A.
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:-
1st. In pressure gauges for compressed gas the use of a plunger, c, in conjunction
with an antagonistic spring, e, and pointer f.
2nd. The general construction and arrangement of pressure gauge substantially
as herein described and illustrated in the accompanying drawing.
Dated this 4th day of February 1892.
A. SUITER.