Refrigerator or Cooler for Preservation of Perishable Articles, and Apparatus connected therewith.
Year: 1894

page_text: Date of Application, 16th May, 1894-Accepted, 11th Aug., 1894
COMPLETE SPECIFICATION.
Refrigerator or Cooler for Preservation of Perishable Articles, and
Apparatus connected therewith.
HAROLD TYRRELL GRAINGER 34 Parkholme Road Dalston N.E. Civil
Engineer 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 relates to an improved method in the making of a refrigerator or
cooler and in the apparatus connected therewith whereby the cost of production
is very materially reduced and which I propose to mould from clay or other
suitable materials and shewn in cross sections in the drawings hereto and
particularly described and which may be made either in sections pressed or stamped
by machinery or otherwise moulded and those made from clay may be subsequently
fired and the machine I propose to employ in making the sections A and B is a
screw fly press or a lever and spring press.
A loose concave die is laid upon the bed of press and upon which the clay to be
worked is then placed and the shaft in decending forces a convex die upon the clay and
by such means the clay is compressed between the concave and convex dies and thus
the clay is pressed or formed into one section as shewn in the cross section drawing
at A and other shaped dies are employed in the production of other section as
shewn in cross section at B and the sections A and B to be afterwards fitted and
fixed together at the base with Portland cement or any other suitable plastic
materials and as the section marked A is of a less diameter than that of Ba
vacuity is thus formed and into which any suitable ingredient or ingredients
diluted with water may be poured through the opening shewn in cross section at C
the sections A and B may have impressed one or more fillets or projections as in
cross section at D and which fit into a corresponding groove or grooves as shewn
in base plate in cross section at E so as to effectually exclude the external from
internal atmosphere.
In some instances glass, metal or other suitable material may with advantage be
utilized in manufacture or either in combiuation and the shape of the base of the
cooler may then be in the form of a bowl or basin as shewn in cross section at F
or any other suitable pattern and a groove or recess marked G formed round upper
edge and upon which a porous or non porous cover H made in one piece either of
clay or other suitable material jacketed or otherwise and which may be fitted on
the base plate or basin and thus the outer air may be excluded from the interior
and when made in one piece the clay or other materials may be rammed into the
space K of mould J through openings N and I would have it understood that I do
not limit myself to the exact description or drawings as herein set forth.
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
The method of moulding a jacketed refrigerator or cooler in sections or otherwise
with or without the aid of loose dies and the various arrangements as substantially
set forth with the exception of the spring lever or screw fly press which are well
known and in common use.
D
J