Improved Apparatus for Freezing Cream and other Liquids.
Year: 1891

page_text: Date of Application, 27th Nov., 1891
Complete Specification Left, 2nd June, 1892-Accepted, 9th July, 1892
-
PROVISIONAL SPECIFICATION.
Improved Apparatus for Freezing Cream and other Liquids.
I, JOHN MADIGAN of 10 Sewall Road York Road Wandsworth in the County
of Surrey, Gentleman, do hereby declare the nature of the said invention to be as
follows:-
The object of this invention is the construction of an apparatus for freezing
cream, coffee, and other liquids.
Now according to this invention I provide a wheel or drum of zinc or other
suitable material to contain a freezing mixture, which rotates in suitable bearings,
and on one side of or above the drun I fix a tank to hold the liquid to be frozen.
The drum projects into the tank, which is made to fit the same in such a manner
as to make a watertight joint.
On slowly rotating the drum a portion of the liquid clings thereto and is
frozen, the congealed mass is removed from the drum by a scraper or the edge of
the tank and falls into a vessel placed to receive it.
Dated 27th November 1891
ERNEST SALAMAN,
Agent for Applicant.
COMPLETE SPECIFICATION.
Improved Apparatus for Freezing Cream and other Liquids.
I JOHN MADIGAN of 45 North Street late of 10 Sewall Road York Road
Wandsworth in the County of Surrey Gentleman 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 :-
The object of this invention is the construction of an apparatus for freezing
cream coffee and other liquids.
Hitherto such machines have been constructed with a metal drum containing a
refrigerant dipping into a tank or other receptacle containing the liquid to be
frozen the congealed mass being removed from the drum by a scraper. My
improvements in this class of apparatus are as follows:-
Now according to this invention I provide a wheel or drum of zinc or other
suitable material to contain a freezing mixture which rotates in suitable bearings
and on one side of or above the drum I fix a tank to contain the liquid to be
frozen.
The drum or wheel projects into the tank which is made to fit the same in such
a manner as to make a watertight joint.
On slowly rotating the drum a portion of the liquid clings to the periphery
thereof and is frozen the congealed mass is removed from the drum by a scraper or
the edge of the tank and falls into a vessel placed to receive it.
And in order that my invention may be the better understood I will proceed to
explain the same with reference to the accompanying drawings in which
Fig. 1 represents a sectional elevation of an apparatus for freezing cream and
other liquids constructed according to this invention.
Fig. 2 is a sectional plan of same on line A B Fig. 1.
Fig. 3 is a section of same apparatus on line C D Fig. 1.
Fig. 4 is elevation of delivery end of apparatus.
The same letters denote the same parts in all the figs.
Price Rd 1

page_text: a is a metal drum the sides of which are lagged with or constructed of non-
conducting material shewn partly in section at Fig. 1 containing a number of
partitions 6 of the shape shewn for the purpose of holding the freezing mixture
(preferably crushed ice and common salt) in contact with the periphery of the
drum a
As it rotates these partitions do not extend quite to the centre of the
drum a c is the tank the scraper for removing the frozen liquid from the drum a
the scraper d is pivoted at e to the casing fg are springs to keep the scraper d
in contact with the periphery of the drum a his a shoot or spout to convey the
frozen liquid to the receiving vessel The drum is rotated by the winch handle i
which is attached to a pinion j gearing with an idle pinion k which in turn gears
with the wheel secured to the axle m of the drum a whereby a slow motion is
given to the drum a.
The freezing mixture is inserted into the drum a through a suitable orifice n
which may be closed by a stopper o secured to the drum a by means of a band
and screws qg a ring of asbestos rubber or other suitable material being interposed
between the stopper and the drum to make a watertight joint or the orifice may
be closed by any other suitable means.
.
The axle is attached to the stopper o and the axles m and rotate in bearings
formed in the case which is made in two portions hinged as shewn at Figs. 1
and 4 to allow of the drum being removed for filling with the freezing mixture or
other purposes.
The pinions and are mounted on suitable studs attached to the casing f
is a piece of wire gauze in the bottom of the tank c to allow the liquid to be
frozen to form a thin film on the periphery of the drum a piece of felt cork or
other suitable material being inserted between the drum and the sides of the tank
to prevent the liquid in the latter from running down the sides of the said
drum.
I am aware that machines for freezing cream and other liquids have hitherto
been constructed with a rotating drum containing a freezing mixture and a scraper
to remove the frozen liquid from the surface of the drum I do not therefore claim
a drum and scraper as a new invention but
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
11. In an apparatus for freezing cream and other liquids the combination of a
rotating drum to contain a freezing mixture and a scraper to remove the frozen
liquid from the periphery thereof with a tank to contain the liquid to be frozen
situated above or at one side of the drum substantially as described and shewn.
2. The improved apparatus for freezing cream and other liquids substantially as
described and shewn at 1 operating in the manner specified.
Dated this 2nd da of June 1892.
ERNEST SALAMAN,
Patent Agent to the British & Foreign Patents & Trade Marks Society,
61, Chancery Lane, London, Agent for Applicant.