JB/169/217/001

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Where in order to i In many cases of impregnation and transmission the fluid, with
which it is intended should be forced through or into the subject matter, should be impregnated,
finds its intended place already occupied by
another fluid which it must consequently drive out.
In these cases an advantageous way of effecting the
introduction substitution exchange is to keep the subject
exposed by one of its surfaces to the external atmosphere,
while the opposite surface opens into the
Vacuum Chamber so to order matters that the inclosure
of the subject matter in the Vacuum Chamber
shall be partial only, one part covered with the having one part exposed with
no other covering than that of the impregnating fluid exposed to the pressure of the force conveys itself that way in preference whereby a proportionate power part of the impregnating force is lost.
external atmosphere, with no other covering than
that of the impregnating fluid.

Suppose it for example a skin which is to
short of an exact coincidence with and application to the skin so much uncovered space or less through which the air is forcedmeets with less resistance and is therefore
be impregnated with the tunn of liquids respectivelyand for
tanning or currying. The Vacuum Chamber is open At top the top, till the materials of
atmosphere in the form of texturematerials of the Vacuum Chamber instead of being airtight
is composed of a perforated substance such are of a permeable material
as a cloth of an open texture tight are to are of a permeable texture, in the manner
of a sieve, more or less form of a of such a of a convenient degree of fineness, with
degree of fineness as is found supported
a support of strength proportioned to its extent, and according to its extent by bars or lattice
work or grating composed for instance of bars, or lattice work sieve. Upon this supportsieve the skin being
being stretched, is covered with the fluid. The skin, being of
an irregular figure would will not coincide with the figure
of the sieve: whereby it will therefore either fall short of
it or extend beyond it altogether or fall short of it in one part and extend beyond it, the only inconvenience is that so much of the skin remains unimpregnated and unfitted unprepared for use: so far as it falls short of it the deficiency must be supplied by some flexible substance impermeable to air, such as oil-cloth silk for example: so far as the impermeable suppliment to the thingfall short of applying ding with itself without

Identifier: | JB/169/217/001"JB/" can not be assigned to a declared number type with value 169.
Date_1		Marginal Summary Numbering
Box	169	Main Headings	panopticon versus new south wales
Folio number	217	Info in main headings field
Image	001	Titles
Category	text sheet	Number of Pages	1
Recto/Verso	recto	Page Numbering	d1 / f17
Penner	jeremy bentham	Watermarks
Marginals		Paper Producer
Corrections		Paper Produced in Year
Notes public		ID Number	57037
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