JB/106/012/003

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The fla match
can not well be
convey'd into the
flash-chamber
at any of the
mouths: it would
be wilted by water
dripping from
the uppper part
of the mouth.

It must be introduced
either
laterally at an
aperture higher
situated in short
situated above the
greatest rise of
the water, or
perpendicularly
through the
middle of the
cover

Instead of a Neck
on a floor of cast
iron, just below
the lowest level of
the water in the
pond, opening by
valves in as many
places as possible.
The will save the
expence of pipes
and nothing more
will be necessary
than a square
hollow tower of the
same diameter as
the flash-chamber
all the way down.

like the fetching of ?? common pump.
---page break---

The mouth of the
flash-chamber may
occupy nearly the
whole extent of one
of the sides
of the square.

For a valve
either

1. Either a op clap-
-door of iron or
wood this cased with
thick iron sliding
up and down in
a groove -
or

2. a fixt grating
of flat bars on
the outside, and behind
it in the inside
a similar
grating to slide so
that its bars shall
alternatively fill coincide
with the bars
of the outer one, or
exactly fill up the spaces
between them

Advantages of the
1st valve

1. The discharge will
be performed in half
the time

2. There will be fewer
points of contact to
afford room for leakage.

Disadvantages.

It will require a force
immensely greater to
work it:

It must be at
least double the weight)2.

---page break---

2. It will have perhaps 12 times as far to moove. 3. The motion will be upinwards -in a direction opposite to that of its gravity The second valve slsides horizontally and it has no greater space to move over than the distance between bar and bar of the fixt grating: say 3 inches. The touching must be kept well greased and the substance must be thick tp prevent warping. {Line diagrams of design} will not signify: since by taking an observation first of the heat and afterwards of the degree of ascension which is the result, the proportion between the one and the other will be nevertheless ascertained.

Identifier: | JB/106/012/003"JB/" can not be assigned to a declared number type with value 106.
Date_1		Marginal Summary Numbering
Box	106	Main Headings
Folio number	012	Info in main headings field	flash-pump
Image	003	Titles
Category	text sheet	Number of Pages	2
Recto/Verso	recto	Page Numbering
Penner	jeremy bentham	Watermarks	[[watermarks::l munn [britannia emblem]]]
Marginals		Paper Producer	benjamin constant
Corrections		Paper Produced in Year
Notes public	includes drawings	ID Number	34600
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