IMPROVEMENTS IN FREEZING APPARATUS to be as follows:
Year: 1884

page_text: I THOMAS FISHBURN of Garabaldi Street, Scarborough in the County of York,
Ship's Steward do bereby declare the nature of my Invention for "IMPROVEMENTS IN
FREEZING APPARATUS to be as follows:-
"
These improvements relate to the construction of a simple, inexpensive and
efficient freezing apparatus.
In carrying out my invention I employ an outer vessel with a wide mouth to
contain the freezing mixture and in the centre of this vessel I form a support for
an inner vessel to contain the liquid to be frozen. This inner vessel is constructed
with a narrow flange or shoulder resting upon a corresponding narrow flange on
the top of the support and is enclosed by a suitable lid or cover-Rising up through
the centre of this inner vessel and forming an essential feature in my invention is
a hollow tube open at the bottom so as to permit the freezing material to have
access to the same. In this manner I not only subject the outside but also the
centre of the inner vessel to the action of the freezing material and thus considerably
expedite the operation-The outer vessel is enclosed by a cover of an annular
form which permits the inner vessel to be removed without disturbing such cover
and which cover is retained and locked in position by a pair of lugs projecting
from the fall down handle of the apparatus.
In some cases I support the inner vessel upon the point of a central spindle
rising up through the hollow tube and thus I still further reduce the frictional
surface and permit the outer vessel to be revolved in one direction whilst the inner
vessel either remains stationary or is revolved in the contrary direction these
movements being produced mechanically or by simply turning the outer vessel by
hand with a circular to and fro motion.

page_text: I, THOMAS FISHBURN, of 2, Garibaldi Street, Scarborough, in the County of
Yorkshire, Ships Steward, do hereby declare the nature of my invention for
"IMPROVEMENTS IN FREEZING APPARATUS," and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement;
These improvements relate to the construction of a simple, inexpensive, and
efficient freezing apparatus.
In order that my invention, and the means by which it can be put into practical
operation may be thoroughly understood, I will now proceed to describe the same
in detail, referring, in so doing, to the accompanying drawing which is to be taken
as part of this specification, and read therewith. The figure illustrates, partly in
section and partly in elevation, my invention constructed as a portable apparatus.
It is drawn as constructed principally of tin-plate, although I do not confine myself
to this metal.
A is the outer vessel, or body, of my apparatus. Its mouth is fitted with an
annular cover, B; through which passes the inner cylindrical vessel C, to receive
the substance to be frozen. This vessel, C, is fitted with a central tube, D, open at
the bottom, E; its cup shaped top, F, having a small hole, f, formed in it for the
escape of air. The space, or cavity, of the freezing vessel, C, is, consequently,
annular in plan, and as it does not reach to the bottom of the outer vessel, A, the
freezing mixture not only surrounds it, but occupies the central space, and exerts
its freezing influence on the inside of the mass to be frozen, accordingly A suitable
number of brackets, G, project at a suitable level from the inside of the vessel A,
and receive a ring-support, H, of a proper diameter for the vessel, C, to rest upon
by means of the ring, I.
J is the cover of the vessel, C.
The cover, B, is furnished with knobs, K, for convenience in taking it off and
replacing it, and two projecting plates, L, which are virtually diametrical
continuations or extensions of said cover, are provided for the purpose of enabling
the ends, m, of the drop-handle M, to hold said cover in its place while the freezing
process is going on. With the cover, C, held down by the handle M, as described
and illustrated, and also, to some extent, supported by the top edge of the ring-
support, H; it is evident that the inner vessel, C, can be readily removed without
disturbing the other parts of the apparatus.
In some cases, I support the inner vessel, C, upon the point of a vertical spindle
rising in the tube, D, for the purpose of diminishing the friction between the two
rings H and I
In operating my apparatus, the outer vessel, A, may be rotated, with a to-and-
fro motion, round the vessel, U; or the latter may be rotated with the same motion,
while the vessel, A, is stationery, or is being moved in the contrary direction.
These motions may be imparted by hand or by any convenient mechanical device,
according to the size of the apparatus.

page_text: Any convenient device other than the ends of the handle, M, may be made use
of for the purpose of keeping the cover B in its place.
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. In a freezing apparatus, the combination of the central tube, D, with the
inner vessel C to receive the mass or liquid to be frozen; substantially as described
with reference to the accompanying figure.
2. In a freezing apparatus, the combination of the central tube D; inner vessel C;
ring, 1; ring-support, H; brackets, G; and annular cover, B; substantially as
described with reference to the accompanying figure.
3. In a freezing apparatus capable of being made as a portable apparatus, the
combination of drop-handle, M; its ends, m; and the annular cover B; the whole
substantially as described with reference to the accompanying figure.