A Gas-distributing Governor for Heating and Lighting Gas.
Year: 1889

page_text: Date of Application, 13th Nov., 1889
Complete Specification Left, 13th Aug., 1890-Accepted, 13th Sept., 1890
PROVISIONAL SPECIFICATION.
A Gas-distributing Governor for Heating and Lighting Gas.
1 SAMUEL CARNABY of 91A Pitt Street Liverpool, Gas Engineer in the County of
Lancaster do hereby declare the nature of this invention to be as follows :--
My invention relates to a form of distributing governor for use, with a system of
distributing heating and lighting gas inventing by Mr. B. H. Thwaite, by which gas
companies can supply gas for beating, smelting, and similar purposes through one
meter in the day timo, and gas of higher illuminating power through another meter,
at night time, using the same service pipes for both, by merely altering the pressure
at the works. In annexed sheet of drawings Figure 1 is a section of governor, A is
the inlet from service pipe, B is the outlet to night meter, O is the outlet to day
meter D is a conical or mushroom valve for admitting and shutting off supply to
night meter, E is a similar valve for admitting and shutting off supply to day meter
Fis a rod or spindle to which the valve E and the inverted metal cup G are attached.
His an annular trough, filled with mercury or glycerine in which the edge of the
inverted cup G floats and prevents the gas getting into the top of the governor, I are
movable weights for adjusting the pressure at which the gas shall be diverted from
one meter to the other. K is a narrow bar across the governor with a hole through
for guiding the top of the spindle F so that the valve E shall rest fairly in its seat
when closed M is a movable cover for governor, N is a small air hole to permit the
inverted cup G to rise and fall, but if the cover is not attached air tight, the airhole is
unnecessary, O is a passage through the centre of the annular trough for the gas to
reach the inverted cup G. Now with gas supplied at the ordinary pressure it will
flow in at A through the valve D. and out at B. to the night meter, but when the
pressure is increased as would be the case in supplying the gas for heating, smelting &
similar purposes it raises the inverted cup G and with it the spindle F & valve E
allowing the gas to pass to the day meter, through the outlet C, at the same time
closing the valve D and shutting off the supply to the night meter. The valves D
and E being connected on the principle of the balance by means of the bar P. pivoted
at the point R. it follows that when one is closed the other must be open and the
exact pressure at which it is desired to divert the supply of one meter to the other,
can be readily adjusted by the movable weights I.
Dated this 12th day of November 1889.
SAML. CARNABY.
COMPLETE SPECIFICATION.
A Gas-distributing Governor for Heating and Lighting Gas.
SAMUEL CARNABY No. 91 Pitt Stroot Liverpool Gas Apparatus Manufacturer
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:
This invention relates to a gas distributing governor for heating and lighting gas,
by which with the lighting quality of gas supplied from the mains, under one pressure
say at night, and the heating gas supplied from the mains in the day time at a different
and preferably higher pressure according to the Thwaite system of distribution, the
lighting gas will be distributed to the low pressure and lighting gas moter, and the
heating gas to the heating gas meter automatically to the advantage of the producer
and consumer.
Before referring to the sheet of drawings that is intended to accompany and form
part of this specification, I wish it to be clearly understood that I do not intend to be
confined to the exact details shown therein as these may be modified without departing
from the nature of this invention.

page_text: Figures 1 to 6 shew my invention in its various modifications.
In the following detailed description it may be observed that the same letters of
reference, refer to the same or similar respective parts of the invention.
Referring to Figure 1 which shews a cross section of the automatic distributor.
The gas from the street main enters the distributor by the supply pipe A. flowing into
the chamber B, if the gas is too low in pressure to lift the inverted bell C. weighted
and controlled by means of a vertical and central spindle D. and dipping into an
aqueous or metallic solution E. carried by troughs F the valve G remains in its seat
and covers the outlet H. leading to the high pressure gas meter.
The valve I suspended on opposite end of the rigid lever J, to that carrying the
valve G, is below its seat, allowing the low pressure gas to escape into the chamber L
from which it flows through outlet K to the low pressure gas meter.
When the pressure of gas is sufficient to raise the inverted bell above the seat,
this movement lifts the valves G and I, opening the outlet H. to high pressure meter,
and closing the outlet to low pressure one.
The degree of pressure required to lift the valves can be regulated by the number
of weights M which can be adjusted or added by the removal of the cover N.
In Figure 2 which shows a part section of the mechanical arrangement for actuating
the valves
Instead of the lever J for supporting the valves, being rigid, it is in this modification
carried by a fulcrum O, the lever being balanced by a pivot p, supported by a link Q,
the central spindle D having the weights and inverted bell, as before described.
The raising of the bell by pressure of gas lifts the valve I above its seat and closes
the outlet to low pressure gas meter.
Figure 3 slicws a plan in cross section of the distributor showing the two valves G
and I.
Instead of the weights being placed directly on central spindle, I may place them
on a horizontal pivoted and screwed lever Q as shown in Figure 4, the end of this
horizontal lever works into the upper end of vertical guide spindle D, the scrowed
lever is centred on a fulcrum R, by the movement of the weights along the lever a
nice degree of adjustment is obtained.
Figure 5, shews a modification of the balancing arrangement of Figure 2, but
instead of the flat seat valves, inverted bell or liquid scat bell valves are used.
The gas enters from the sido of distributor through inlet opening S, and lifts, if
the pressure is sufficient the valve I, if the pressure of gas is low, this valve I remains
closed and the valve G is kept open. In this modification the outlet openings are at
the bottom of distributor.
Figure 6 shows another modification of the distributor, balanced lever arrangement
the main points of difference will be seen to be, in that the horizontal weighted lever Q
is used working on upper end of central spindle D.
The arrangement for actuating valves is the balanced lever, similar to that shown in
Figure 2, the difference being in the relative position of the valves to the outlet.
Having now particularly described and ascertained the nature of my invention and
in what manner the same may be performed I declare that what I claim is set forth as
follows-
1. I claim the gas distributing governor-for heating and lighting gas--by which
the two kinds of gases-supplied from the mains at different pressures are automatically
distributed to the respective meters for registering the flow of the heating or lighting
gas substantially as shewn in Figure 1.
2. I claim the mollifications of the gas distributing governor as shewn in the
Figures 2 to 6-substantially as herein described.
3. I claim the application of my governor for distributing the same kind of gas for
distinctive purposes.