IMPROVEMENTS IN PRISON CELLS FOR EFFECTING THE VENTILATION AND WARMING THEREOF APPLICABLE IN OTHER CASES WHERE IT IS DESIRED TO VENTILATE AND WARM APARTMENTS AND AT THE SAME TIME PREVENT ACCESS OF SOUND THROUGH THE EXHAUST VENTILATING PASSAGES OR APPLIANCES FROM ONE CELL OR APART- MENT TO ANOTHER
Year: 1885

page_text: I, ROBERT BOYLE of the firm of Robert Boyle & Son of Holborn Viaduct in the
City of London and of Glasgow in the County of Lanark, North Britain, Ventilating
and Sanitary Engineers do hereby declare the nature of my said Invention for
"IMPROVEMENTS IN PRISON CELLS FOR EFFECTING THE VENTILATION AND WARMING
THEREOF APPLICABLE IN OTHER CASES WHERE IT IS DESIRED TO VENTILATE AND
WARM APARTMENTS AND AT THE SAME TIME PREVENT ACCESS OF SOUND THROUGH
THE EXHAUST VENTILATING PASSAGES OR APPLIANCES FROM ONE CELL OR APART-
MENT TO ANOTHER" to be as follows :—
My Invention has for its principal object to effect the ventilation and warming
of prison cells in such a manner as to prevent the passage of sound from one cell
to another through the exhaust ventilating passages but my invention is applicable
also in other cases where it is desired to effect the ventilation and warming of
apartments without the access of sound as aforesaid I will describe my Invention
as applied to prison cells from which its general application will be readily
understood.
According to my Invention I arrange in the walls of the cells passages leading
into an upcast shaft at the bottom of which gas or other flames may be burnt in
cold weather to warm the shaft to prevent condensation of air in the shaft and at
the top of the said shaft is placed a ventilator (preferably of the form of what is
known as an air pump ventilator) The passages in the walls of the cell do not
communicate directly with the interiors of the cells but do so by means of other
passages arranged parallel thereto these latter passages each communicating at one

page_text: end with a cell and at the other end with the main passages parallel thereto. Thus
there is an independent passage for air from each cell into the main passages to the
upcast shaft. Where the main passages last named meet at the upcast shaft there
is a baffle or deflecting wall or plate to prevent the currents of air passing from
the said passages from meeting each other so as to impede the draught. In
existing buildings where it is inconvenient to make the passages in the walls they
may be made inside the cell by special conduits made of double casings with an
interposed material which will not conduct sound. Passages may be arranged for
the inlet of either cold external air or of heated air according to the season the said
passages communicating independently with each cell so that they do not form a
means of conveying sound from cell to cell..
.

page_text: I, ROBERT BOYLE, of the firm of Robert Boyle and Sons of Holborn Viaduct
in the City of London and of Glasgow in the County of Lanark North Britain,
Ventilating and Sanitary Engineers, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:-
My Invention has for its principal object to effect the ventilation and warming
of prison cells in such a manner as to prevent the passage of sound from one cell
to another through the exhaust or ventilating passages but my Invention is
applicable also in other cases where it is desired to effect the ventilation and
warming of apartments without the access of sound as aforesaid. I will describe
my Invention as applied to prison cells from which its general application will be
readily understood. Figure 1 of the accompanying Drawing is a horizontal section
and Figure 2 is a vertical section of so much of a prison as is necessary to shew
the application of my Invention thereto.
According to my Invention I arrange in the walls A of the cells passages
channels or flues B leading into an upcast shaft at the bottom of which gas or
other flames may be burnt in cold weather to warm the shaft to prevent con-
densation of air therein and at the top of the said shaft is placed a ventilator D
(preferably of the kind known as an air pump ventilator)-The passages B in the
walls of the cells do not communicate directly with the interiors of the cells but do
so by means of other passages channels or flues E arranged parallel thereto these
latter passages each communicating at one end by the opening e with a cell and at
the other end by the opening e' with the main passage B parallel thereto. Thus
there is an independent passage for air provided by the passage E and openings e
and e from each cell into the main passages B to the upcast shaft C.-Where two
main passages B meet at the upcast shaft there is a baffle or deflecting wall or
plate G to prevent the currents of air passing from the said passages B from
meeting each other so as to impede the draught. In existing buildings where it is
inconvenient to make the passages in the walls they may be made inside the cell by
special conduits made of double casings with an interposed material which will not
conduct sound.
Passages or channels may be arranged for the inlet of either cold external
air or of heated air according to the season the said passages or channels com-
municating independently with each cell so that they do not form a means of
conveying sound from cell to cell. Figure 3 shews such a passage or channel

page_text: consisting of the short flue h leading from the corridor to the cell and Figures 4
and 5 shew in views at right angles to each other an arrangement of such a passage
or channel i leading from the channel ; which latter receives warm air from any
suitable air warming apparatus. In Figure 5 the passage or channel h is also
shewn, as both these passages or channels may be provided in variable climates,
so that either can be opened and closed as desired.
It will be readily understood from the foregoing description how the arrange-
ment according to my Invention can be applied generally to such buildings as it is
or may be applicable to.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is:-
First In prisons or other buildings the combination of passages channels or
flues B leading to a ventilating shaft with other passages channels or flues E com-
municating at one end with the passages channels or flues B and at the other end
with the cells or apartments to be ventilated substantially as hereinbefore described
whether they be made in the walls of the building or by means of specially constructed
additions.
Second-The combination with the subject matter of the preceding claiming
clause of air inlets arranged for admitting air of the required temperature, as
desired substantially as hereinbefore explained and illustrated by Figures 3, 4
and 5 of the accompanying Drawings.