Improvements in or relating to the Construction of Cold Storage Chambers, Rooms, or Structures, and Method of Producing and Maintaining a Low Temperature therein.
Year: 1899

page_text: Improvements in or relating to the Construction of Cold Storage
Chambers, Rooms, or Structures, and Method of Producing and
Maintaining a Low Temperature therein.
I, EDGAR JAMES JARMAN, of Snowdon Villa, Chard, in the County of Somerset,
Merchant, do hereby declare the nature of this invention to be as follows:-
This invention has for its object improvements in or relating to the con-
struction of cold storage chambers rooms or structures and method of producing
and maintaining a low temperature therein.
According to this invention the sides and roof of the room chamber or struc-
ture (of any suitable shape) are constructed of metal advantageously corrugated
galvanised iron or other suitable sheet metal with a tiled or cement or other
suitable floor means such as a tightly fitting door being provided to allow access
to the interior of said room chamber or structure and the roof or top of the
latter being advantageously formed sloping. Over the outside of this building
room chamber or structure (which for the sake of brevity I shall hereafter
collectively refer to as the "chamber") I cover with suitable water absorbing or
water holding material such for instance as porous felt arranged so that said felt
entirely covers the roof and all sides of the chamber-the latter being made so
that when same is closed it is practically air-tight that is to say it is to be con-
structed so as to exclude the outside air from gaining admission thereto as far
as possible.
Means however are provided to allow for escape of any pressure inside such
chamber such for instance as an outlet or non-return valve or valves.
According to this invention I arrange for water to be supplied to this exterior
covering of felt or equivalent so that the latter will be wetted or moistened.
For instance from a suitable supply tank or cistern I may run a pipe or pipes
along the uppermost ridge or ridges of the roof and also if desired along the top
edge of each side and if necessary at any other point or points said pipes being
provided with numerous apertures or outlets to thus afford a thorough supply of
water to all parts of this outer covering of the chamber and so as to keep same
continuously wet or moist.
The evaporation of the water or moisture in or on said outer covering will
consequently keep the temperature low in the interior of said chamber 30 that
even in tropical countries or when the exterior of this closed chamber thus supplied
with water is exposed to the greatest heat of the sun the temperature in the
interior of the chamber will be maintained at a very low point.
If desired the chamber may be provided on its exterior with any suitable
gutters or means for collecting any surplus water so that the latter (if any) can
be collected and returned to the supply cistern.

page_text: The interior of the chamber may be fitted up in any suitable manner or pro-
vided with any suitable fittings or appliances according to the purposes for which
same is to be used.
This invention can be applied to any purpose or building to which same is
applicable and requiring its temperature lowered or kept cold during hot or
summer weather.
Improvements in or relating to the Construction of Cold Storage
Chambers, Rooms, or Structures, and Method of Producing and
Maintaining a Low Temperature therein.
I, EDGAR JAMES JARMAN, of Snowdon Villa, Chard, in the County of Somerset,
Merchant, do hereby declare the nature of this invention and in what manner the
same is to be performed to be particularly described and ascertained in and by
the following statement:-
This invention has for its object improvements in or relating to the con-
struction of cold storage chambers rooms or structures and method of producing
and maintaining a low temperature therein.
According to this invention the sides and roof of the room chamber or struc
ture (of any suitable shape) are constructed of metal advantageously corrugated
galvanised iron or other suitable sheet metal with a tiled or cement or ather
suitable floor; means such as a tightly fitting door being provided to allow access
to the interior of said room chamber or structure and the roof or top of the
latter being advantageously formed sloping. The outside of this -building
room chamber or structure (which for the sake of brevity I shall hereinafter refer
to as the "
chamber I cover with suitable water absorbing or water holding
material such for instance as porous felt arranged so that said felt entirely
covers the roof and all sides doors and windows of the chamber-the latter being
made so that when same is closed it is practically air tight that is to say it is to
be constructed so that when closed it will (as far as possible) exclude the outside
air from gaining admission thereto.
"
Means however are provided to allow for escape of pressure (if any) arising
inside such chamber such for instance as an outlet or non-return valve or valves.
According to this invention I arrange for water to be supplied to this extérior
covering of felt or equivalent so that the latter will be wetted or moistened.
For instance from a suitable supply tank or cistern I may run a pipe or pipes
along the uppermost ridge or ridges of the roof and also if desired along the top
edge of each side and if necessary at any other point or points said pipes being
provided with numerous apertures or outlets to thus afford a thorough supply of
water to all parts of this outer covering of the chamber and so as to keep same
continuously wet or moist.
F
.
The evaporation of the water or moisture in or on said outer covering will
consequently keep the temperature low in the interior of said chamber so that
even in tropical heat or when the exterior of this closed chamber thus supplied

page_text: with water is exposed to the greatest heat of the sun the temperature in the
interior of the chamber will be maintained at a very low point.
If desired the chamber may be provided on its exterior with any suitable
gutters or means for collecting any surplus water so that the latter (if any) can
be collected and returned to the supply cistern if desired.
The interior of the chamber may be fitted up in any suitable manner or pro-
vided with any suitable fittings or appliances according to the purposes for which
same is to be used.
This invention can be applied to any purpose or building to which same is
applicable and requiring its temperature lowered or kept cold during hot or
summer weather.
In the accompanying drawings I have illustrated my invention carried into
practice with an oblong building; Fig. 1 being a perspective view thereof and
Fig. 2 being cross sectional view on a larger scale.
a is cement floor in or on which are fixed the corner-posts b which latter support
the frame and roof d.
e is the sheet metal forming the sides end and roof covering one or more doors f
may be provided also formed of sheet metal and adapted to fit as closely as possible
in the door frame f¹.
g is outside covering of felt (or other suitable water absorbing or water holding
material) which covers the roof and all sides and end doors and windows and
reaches to the ground.
is water supply pipe to which water is supplied from any suitable source and
from this pipe the water is supplied to the branch pipes i extending along on
each side of the top ridge of the chamber and down each end thereof and along
the top edge of each side thereof all these pipes i being formed with series of
apertures therein at suitable intervals and of suitable size to thereby keep the
said outer cover of porous material g saturated or sufficiently wet or moist at all
points to attain the object of my invention namely to keep low the temperature
inside the chamber.
or
The felt or covering material g (on the top and sides of the chamber) may
advantageously be protected by means of an outer covering (of thin sheet metal or
wood) to keep the sun off the felt etc. g this outer covering being mounted in any
convenient manner (for instance an outer covering z may be mounted as shown
in dotted lines in Fig. 2 over the top of the chamber-thus forming a double roof
to said chamber) and spaced apart from the felt etc. y at sufficient distance there-
from and so arranged and ventilated as to permit evaporation to freely take place.
Thus a cold storage chamber very inexpensive to construct can be erected
at any desired spot where there is sufficient supply of water available for use in
conjunction therewith as hereinbefore described and no machinery or other
special means are required for maintaining the low temperature in this storage
chamber and consequently same is very inexpensive in use as well as in con-
struction.
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
1. The herein described method of producing and maintaining a low tempera-
ture in a cold storage chamber during hot weather-by constructing such chamber
of sheet metal, covering the outside of such sheet metal entirely with a water
absorbing or water holding material such as porous felt, and providing means
(such as a system of water pipes) adapted to keep the whole of said exterior
covering during hot weather in a continuously wet or moist condition so that
continuous evaporation will by the hot weather be caused to take place substan-
tially as and for the purposes herein before set forth.
2. A cold storage chamber constructed with an exterior covering of a water

page_text: absorbing or water holding material such as felt arranged to act in combination
with means to keep said covering material on the exterior of said chamber in a
continuously wet or moist condition substantially in the manner and for the
purposes herein before set forth.
1011
1000
TONGUE & BIRKBECK,
Birkbeck Bank Chambers, Chancery Lane, London, W.C.,
Agents for the Applicant.