An Appliance for Increasing, or Increasing and Regulating, the Pressure of Illuminating Gas in Houses, Factories, or Shops.
Year: 1894

page_text: Date of Application, 13th Feb., 1894
Complete Specification Left, 13th Nov., 1894-Accepted, 26th Jan., 1895
PROVISIONAL SPECIFICATION.
An Appliance for Increasing, or Increasing and Regulating, the
Pressure of Illuminating Gas in Houses, Factories, or Shops.
I, JOHN JAMESON of Akenside Hill in the City and County of Newcastle-on-
Tyne Consulting Engineer and Patent Agent do hereby declare the nature of this
invention to be as follows :-
My invention consists in the application of mechanism between the gas meter and
the burners of any description of gas fittings, of an exhausting and compressing
arrangement, worked preferably by clock work; whereby when there is not
adequate pressure and supply of gas in the gas supply pipe for the purposes
required, an additional pressure may be supplied at will.
It is usual in order to avoid unnecessary leakage of gas, to reduce the pressure
of gas in towns during the day time and to increase it at night; and in dark or
foggy weather the gas supply is consequently often very defective and the
principal object of my invention is to enable consumers to whom adequate supply
of gas is an imperative necessity or of considerable importance to remedy this
defect for themselves. I could use an appliance somewhat similar to a dry gas
meter with a strong spring and train of clock work wheels driving this meter
mechanism instead of the mechanism being driven by the gas, as in a meter. Or
I could use a double bellows arrangement within an air tight box; driven by clock
work in the same way, or cylinders and pistons of any ordinary construction and
I may combine with such mechanism regulating arrangements of any convenient
form whereby the rate of movement of the mechanism is regulated by the pressure
of gas on the burner side of the mechanism and independently of the pressure on
the supply side and I may when the supply pressure is quite adequate allow my
subsidiary mechanism to be driven by the gas instead of by the clockwork, or I may
use a bye pass valve.
Dated this Twelfth day of February 1801
An Appliance for Increasing, or Increasing and Regulating, the
Pressure of Illuminating Gas in Houses, Factories, or Shops.
I, JOHN JAMESON of Akenside Hill, in the City and County of Newcastle-on-
Tyne, Consulting 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:-
My invention consists in the application of mechanism between the gas meter
and the burners of any description of gas fittings, of an exhausting and
compressing arrangement worked preferably by clock work, whereby when there
is not adequate pressure and supply of gas in the gas supply pipe for the purposes
required, an additional pressure may be supplied at will.
It is usual in order to avoid unnecessary leakage of gas to reduce the pressure of
gas in towns during the day time and to increase it at night; and in dark or foggy
ID 17

page_text: weather the gas supply is consequently often very defective, and the principal
object of my invention is to enable consumers to whom adequate supply of gas is
an imperative necessity or of considerable importance to remedy this defect for
themselves. I could use an appliance somewhat similar to a dry gas meter with a
strong spring and train of clock work wheels driving this meter mechanism instead
of the mechanism being driven by the gas as in a meter. Or I could use a double
bellows arrangement within an air tight box, driven by clock work in the same
way or cylinders and pistons of any ordinary construction, and I may combine with
such mechanism regulating arrangements of any convenient form whereby the rate
of movement of the mechanism is regulated by the pressure of gas on the burner
side of the mechanism and independently of the pressure on the supply side.
As an illustration of this regulating arrangement I shew in the drawing a
skeleton view of one form of it. In Fig. 1. G. is a gasometer of small size floating
in water or other fluid medium contained in the tank T. the inlet and outlet pipe I.
and O. being above the level of the water at all times. This arrangement is placed
in the way of the gas the pressure of which it is desired to regulate. As the
pressure within the gasometer increases the gasometer rises and as the pressure
diminishes it falls but at its lowest point it does not close the passage between I.
and O. on the top of the gasometer there is a lever L, L. turning on the centre F.,
so that when by excess pressure of gas in the gasometer it rises, the other end of
the lever engages in a star wheel S, on the crank spindle Fig. 2. and stops the
mechanism. For the sake of clearness of drawing I shew the lever L. L. of
extreme length and for the same reason Fig. 1. at an extreme distance from Fig. 2.
the levers being represented as broken on each side of the fulcrum F. The distance
is comparatively immaterial but practically in the construction of an apparatus
I would for convenience make the lever L. L. much shorter than is shewn."
I may when the supply pressure is quite adequate allow my subsidiary
mechanism to be driven by the gas instead of by the clock work or I may use a
bye pass valve.
As clockwork mechanism consisting of weight or spring and train of wheels or
analogcus combinations is so perfectly common an arrangement and so well known
I consider it needful only to shew a skeleton arrangement illustrative of one form
of apparatus according to my invention.
The drawing hereto attached represents a skeleton arrangement of apparatus
according to my invention. The flow of the gas is in the direction of the arrows.
A. B. and C. are a train of clock work in which A. is the spring barrel geared to a
pinion b. and C. is a pinion geared to the wheel B. in the usual way. The shaft in
the centre of C. carries a crank D. and the crank through the connecting rod E.
produces reciprocating motion in the piston of the pump P. The valves of the
pump V. open in the direction of the arrows. It will thus be seen that the
movement of the train of clock work tends to produce an increased flow of gas and
in proportion to the size of the apparatus and the outlet or consumption a pressure
which may be regulated at will.
I do not confine myself to the form shewn in the drawing seeing that- it is
capable of endless variations, but merely set it forth as an illustration.
Having thus 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 :-
.The use of the mechanical appliance substantially as described for increasing or
increasing and regulating the pressure of illuminating gas in houses factories and
shops.
1
101
CAT
1
1004
J. JAMESON.