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or boiling which
from Townsend?
certainly baking cheapest - Boiling heats a great superfluity of water. No use converting any of it into steam.
If the water
would not rise
- the higher or
much the higher
for the smallness
of the content of the
inferior part,
Valves and locks
would be of no
use: as the water
will not
sink but in
proportion as
it is drawn off
by the wicks &
replaced by the
air that rushes
in through them.
The use of
the cocks is to
make the vessl
air tight at
the height where
they are placed,
whereby the water
may be let
down below them
and so a greater
bulk of air be
subjected to the
flash.
But Quere,
whether there
can be any advantage
in that?
since by having
so much more air
---page break---
air below the
utmost you can
hope for is to
replace it with
an equal volume
of water, and that
you have already
On the contrary
you can hardly
expect to replace
with water above
half the bulk
of air
Mouths Number
the more cocks
the quicker the
water is drawn
of and the
quicker may be
the succession of
flashes, & the
more water drawn
up within a given
time.
A second flash
can not be made
without letting
in the air which
drives down the
water to the level
with the pond
unless detained
by Valves.
The use then
of valves is to
be secure the containance
of so
much water as
above them I deny
---page break---
They ought therefore
to be on a
level water the
bottom of the
reservoir.
But the having
-valves makes
legs (tubes) necessary
to place
them on.
Yes: but those
tubes said go
a little way
down.
But then the
intervals would
be considerable &
would impede
the velocity of
the ascension.
24
Match applying
By means of
the stand &
ballance the
workman may
be at a distance
from the burnt
air of the flash ||
25
Light
By means of
tubes light could
be let into the
cylinder, sufficient
to enable
a man to see into
it.
24
|| He must always
be windward of the
gust - Therefore he must
have a walk all round
or at least half round.
---page break---
could the force
of the water in
rising or falling
be employed with
advantage in
working a pump
which should increase
the exhaustion
and thence
the rise of the water
still more?
Or is not then opposed
by the
against perpetual
motions?
In implying itself
into the reservoir
could it turn
an understool
{line diagram}
wheel which
would do this?
At any rate
not a particle of
the water ought
to fall in waste
i:e: without generating
some motion
that should be
applied to use.
26
Valve Star.
Besides the
central aperture
employ Moser's
star to open
& close the whole
cover
[Line Drawings}
The radii may
slide in one another
by grease, for
air tightness sake
---page break---
|
Identifier: | JB/106/011/003"JB/" can not be assigned to a declared number type with value 106. |
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|---|---|---|---|
|
1-6, 18-26 |
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|
106 |
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|
011 |
flash-pump |
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|
003 |
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|
marginal summary sheet |
2 |
||
|
recto |
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|
jeremy bentham |
[[watermarks::l munn [britannia emblem]]] |
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|
benjamin constant |
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|
includes drawings |
34599 |
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