Preventing Vibration
Year: 1884

page_text: Preventing Vibration
Improvements in Apparatus for Preventing
or
Irregularity in the Flow of Gas in Mains or Pipes Supplying
[
Gas Engines.
I, THOMAS BRADBEAR of Birmingham, in the County of Warwick, Gas Meter
Maker, do hereby declare the nature of iny said Invention for "IMPROVEMENTS IN
APPARATUS FOR PREVENTING VIBRATION OR IRREGULARITY IN THE FLOW OF GAS
IN MAINS, OR PIPES SUPPLYING GAS ENGINES" to be as follows:-
This Invention has for its object the construction of apparatus whereby the
vibration or irregularity in the flow of gas in mains or pipes supplying gas engines
caused by the explosions in such engines is prevented.
The Invention consists of a metallic case, the interior of which is divided into
two principal parts, or chambers, by a horizontal partition. At one end of the
case an inlet is formed communicating with the upper chamber.
Near one end of
the horizontal plate there is a hole round which a valve seat is attached. In tho
hole is an inverted conical valve, suspended from a lever that is supported from
the upper part of the case by an adjustable screw, nut, and swivel. To the other
end of the lever is jointed a vertical rod that passes through a small hole in the
upper part of the case, and is fixed to a flexible diaphragm, which is stretched
over a little chamber formed on the top of the case. That part of the rod above
the diaphragm supports a number of weights which can be varied at pleasure, and
the chamber just alluded to is provided with a cover to keep out extraneous matter.
At the end opposite the inlet, or at the side of the case, or in any other convenient
position the outlet from the lower chamber is situated.
The
The action of the apparatus is as follows. The inlet is connected to the pipe
leading to the main, and the outlet, to the pipe leading to the gas engine. The gas
enters the upper chamber and passes between the valve and its seat, and makes its
exit at the outlet, the supply of gas passing from one chamber to the other and
therefore to the gas engine, being regulated by raising or depressing by means of
the adjusting screw, the fulcrum of the lever to which the valve is attached.
gas however finds its way through the hole [formed also for the passage of the
vertical rod] in the upper part of the case into the little chamber, covered by
the flexible diaphragm, and there forms a sort of cushion, the resistance of which
to the force of the explosions is regulated by the weights placed upon the diaphragm,
The consequence is that the. flow of gas to the engine is uninterrupted and all
vibration in the main is obviated.
Dated this Seventh day of January 1884.

page_text: COMPLETE SPECIFICATION.
I, THOMAS BRADBEAR of Birmingham in the County of Warwick, Gas Meter
Maker do hereby declare the nature of my Invention for "IMPROVEMENTS IN
APPARATUS FOR PREVENTING VIBRATION OR IRREGULARITY IN THE FLOW OF GAS
IN MAINS OR PIPES SUPPLYING GAS ENGINES" and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement, reference being had to the accompanying Drawing and to
the letters and Figures marked thereon, that is to say :-
This Invention has for its object the construction of apparatus whereby the
vibration, or irregularity in the flow of gas in mains, or pipes supplying gas engines
caused by the explosions in such engines is prevented.
In order that the Invention may be more easily understood, a Drawing is
attached hereto, the letters of reference corresponding with the following
description.
The Invention consists of a metallic case A, the interior of which is divided into
two principal parts, or chambers B and C, by a horizontal partition D. At one end
of the case an inlet E is formed communicating with the upper chamber B. Near
one end of the horizontal plate there is a hole round which a valve seat F is
attached. In the hole is an inverted conical valve G, suspended from a lever H,
that is supported from the upper part of the case by an adjustable screw I, nut J
and swivel K. To the other end of the lever H is jointed a vertical rod L that
passes through a small hole M in the upper part of the case and is fixed to a flexible
diaphragm N, which is stretched over a little chamber O formed on the top of the
case. That part of the rod L above the diaphragm N supports a number of
weights P, which can be varied at pleasure, and the chamber O just alluded to is
provided with a cover to keep out extraneous matter. At the end opposite the
inlet, or at the side of the case, or in any other convenient position the outlet R
from the lower chamber is situated.
The action of the apparatus is as follows. The inlet E is connected to the pipe
leading to the main and the outlet R to the pipe leading to the gas engine. The
gas enters the upper chamber B and passes between the valve G and its seat F and
makes its exit at the outlet R, the supply of gas passing from one chamber to the
other and therefore to the gas engine, being regulated by raising or depressing by
means of the adjusting screw, the fulcrumn of the lever to which the valve is
attached. The gas however finds its way through the hole M [formed also for the
passage of the vertical rod] in the upper part of the case into the little chamber O,
covered by the flexible diaphragm N, and there forms a sort of cushion, the
resistance of which to the force of the explosions is regulated by the weights P,
placed upon the diaphragm. The consequence is that the flow of gas to the engine
is uninterrupted and all vibration in the main is obviated.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is
The construction of apparatus for the purpose hereinbefore set forth and as herein
described and shown on the Drawing.