JB/106/012/002

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The higher the
line from whence
the water falls,
the greater the
momentum acquired
by means
of a given quantity
of water.

The utmosttotal height
to which water is
capable to be pre
raised by the pressure
of the atmosphere
is never
less than 33 foot

Suppose each

1. Each flash
exprells out half
the air

2. Three foot is
the rise required
to be given by
each stroke

Let them

1. The cover be
33 high from the
surface of the water
in the pond

2. The lowest line
of the discharging
mouth or mouths
27 foot

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Thence the water
being already at
27 a flash will
raise it to 30
foot, and so toties
quoties.

N.B. It may be
easily drawn up
to that height &
kept there, by the
means that will
be mentioned presently.

Drawing the water
up to this height
before the machine
begins to work has
two good effects

1. It makes the
fall be from the
greatest height
possible.

2. By lessening
the height and
consequentlythence the
bulk of the flash
-chamber, it makes)
a given quantity
- of fuel go so
much the farther.

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Six foot being
the height of
the flash-chamber,
divide it
thus

Under the
Match-Cage 2

Height of the
Match & 2
its Cage

Above the
Match-Cage 2

—
6

Underneath
Between the bottom
of the body or
flash-chamber
are the Neck or
Necks

This or these
must be exactly
closed by a valve
or valves opening
inwards

Each time of
workig the pump
requires three different
successive operations,
which can not be
performe going
on at the same
time.

1. Introducing the
burning match into the
fire-chamber.

2. When the requisite
quantity of
air has been thus
expelled, closing
the fire-chamber that

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the water may rise up from the surface of the pond through the necks by forcing open the valves. 3. Opening the mouths of the pump, that the water gained as above may discharge itself and a supply of fresh air equal in bulk be taken in in consequence. If these three operations took up each the same quantity of time, and so that the replenishment went on as quick as the discharging, and if the aperture made for the discharge were equal to the aperture made for the admission of the water; viz. the sum of the orifices of the mouths equal to the sum of the orifices of the necks at the valves, then to keep up a constant stream
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Identifier: | JB/106/012/002"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	002	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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