Improvements in Ice Cream Freezers.
Year: 1894

page_text: Date of Application, 15th Feb., 1894
Complete Specification Left, 15th Nov., 1894-Accepted, 15th Dec., 1894
PROVISIONAL SPECIFICATION.
[Communicated from abroad by JOHN J. MALONE, of World Building, New York
City, U.S.A., Gentleman.]
Improvements in Ice Cream Freezers.
I, REGINALD WALTER BARKER, of Monument Chambers, King William Street,
London, Patent Agent, do hereby declare the nature of this invention to be as
follows:-
This invention relates to machines for freezing ice cream and its object is to
provide a machine of this character in which a cylinder for containing ice or any
freezing mixture is adapted to be rotated, its outer surface in the course of rotation
taking up the cream from an adjacent receptacle, which cream, when frozen upon
said cylinder, is adapted to be removed therefrom by means of a suitable scraper.
In constructing the said device I employ a box having a removable cover.
Within said box is horizontally journalled a cylinder which is adapted to contain
ice or any freezing mixture. A crank is connected at one side of said cylinder, the
Within
handle being outside the box, whereby the såid cylinder may be rotated.
suid cylinder I place a series of S shaped walls, radiating outwardly from the centre
of said cylinder, the said S-shaped walls being adapted to keep the freezing
material close against the shell of the cylinder all around the periphery during
rotation. A trough for containing cream is placed under the said cylinder, and
within said trough is a transfer roller, the axis of said roller being parallel with the
axis of the aforesaid cylinder. Said roller is rotatably mounted on a shaft, which
shaft is supported by two vertical bars connected one at each end of said shaft, the
upper ends of said bars being pivotally connected with the box, one on either side,
and being adjusted a little in advance of the centre of the cylinder. The roller is
so adjusted that its surface will have a bearing against both the cylinder and the
bottom of the cream trough. By this means the rotation of the cylinder will cause
the roller to also rotate, and the cream which is carried by the roller will be
transferred to the cylinder. A scraper consisting of a piece of metal having
upturned side walls is so adjusted at an inclination with relation to the cylinder
that its upper end rests thereon, the lower end of said scraper being held between
suitable supports. One end of a double ended spring bears upon the scraper, and
serves to hold said scraper against the cylinder with sufficient force to enable it to
remove the frozen cream therefrom when said cylinder is rotated. A receptacle
for the frozen cream is situate beneath the scraper, into which receptacle the ice
cream falls as removed from the cylinder by the scraper.
Dated this 15th day of February 1894.
COMPLETE SPECIFICATION.
Improvements in Ice Cream Freezers.
I, REGINALD WALTER BARKER, of Monument Chambers, King William
Street, London, EC., Patent Agent, 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 machines for freezing ice cream and its object is to

page_text: provide a machine of this character in which a cylinder for containing ice or any
freezing mixture is adapted to be rotated, its outer surface in the course of rotation
taking up the cream from an adjacent receptacle, which cream, when frozen upon
said cylinder, is adapted to be removed therefrom by means of a suitable scraper.
In constructing the said device I employ a box having a removeable cover.
Within said box is horizontally journalled a cylinder which is adapted to contain
ice or any freezing mixture. A crank is connected at one side of said cylinder, the
handle being outside the box, whereby the said cylinder may be rotated.
Within said cylinder I place a series of S or curved shaped walls radiating
outwardly from the centre of said cylinder, the said S shaped walls being adapted
to keep the freezing mixture close against the shell of the cylinder all around the
periphery during rotation.
A trough for containing cream is placed under the said cylinder, and within said
trough a transfer roller, the axis of said roller being parallel with the axis of
the aforesaid cylinder. Said roller is rotatably mounted on a shaft, which shaft
is supported by two vertical bars connected one at each end of said shaft, the upper
ends of said bars being pivotally connected with the box, one on either side, and
being adjusted a little in advance of the centre of the cylinder. The roller is so
adjusted that its surface will have a bearing against both the cylinder and the
bottom of the cream trough. By this means the rotation of the cylinder will cause
the roller also to rotate & the cream which is carried on the surface of the roller
will be transferred to the cylinder.
A scraper consisting of a piece of metal having upturned side walls is so adjusted
at an inclination with relation to the cylinder that its upper end rests thereon, the
lower end of said scraper being held between suitable supports. The effect of this
arrangement is that a thin film of cream is taken up by the roller and spread upon
the surface of the cylinder as it is rotated, when it becomes frozen. One end of a
double ended spring bears upon the scraper and serves to hold said scraper against
the cylinder with sufficient force to enable it to remove the frozen cream therefrom
when said cylinder is rotated. A receptacle for the frozen cream is placed beneath
the scraper into which the ice cream falls as removed from the cylinder by the
scraper.
In order that my invention may be properly understood, I will describe the same
with reference to the accompanying drawings, in which Fig. 1 represents an external
side elevation of the ice cream freezer. Fig. 2 is a sectional side elevation of the
same shewing the various details. Fig. 3 is an end sectional view, and Fig. 4 is a
detail of the transfer roller..
In these several views the same letters refer to the same parts respectively.
A being the box or casing having a removeable cover B. Within this box or casing
is the cylinder C which may be made of tin or other metal, or preferably of
enamelled metal, or porcelain. This cylinder is horizontally supported by means
of pivots or gudgeons a revolving in recessed bearings b bin said casing A. The
pivots a a are provided with flanges or discs c c which are secured against the sides
of the cylinder C in any convenient manner.
Openings S S S are provided in one end of the cylinder for the insertion of the
ice or freezing mixture, and sliding covers t are also provided to keep said openings
closed.
Within the cylinder C are arranged a series of S or curved shaped walls d d d,
these walls or curved plates extending the entire length of said cylinder and secured
to the ends of the cylinder in any suitable manner. A cream trough D is provided
within the casing A, directly under the cylinder C. Within the said trough is placed
a transfer roller E, a little to one side of a vertical line through the centre of the
cylinder C, and arranged parallel with said cylinder. This roller E has journals
or pivots ee by which it revolves in the bearings fƒ formed in the lower ends of
supporting arms 9 g, the said arms having pivots h h at their upper ends by which
they are loosely pivotted in the sides of the casing A as shown at ii. Branch arms j
carrying weights k are connected with the said arms g g and serve to keep the

page_text: roller pressed against the surface of the cylinder. This roller is partly immersed
in the cream and thereby takes up a portion of the liquid which adheres to its
surface, and becomes transmitted to the surface of the freezing cylinder C in very
thin layers spread well over its surface so that the process of freezing takes place
immediately. If preferable a second roller may be provided on the other side of
the vertical centre line of the cylinder in a similar manner, as shewn by dotted lines
at E', by means of which a more evenly spread layer of liquid on the surface of the
cylinder may be ensured.
A receptacle F for the ice cream is provided within the casing A in proximity to
the cylinder C, and a scraper I formed of a piece of metal, or of porcelain, having
its side edges turned up, is adjusted at a convenient inclination between said cylinder
and receptacle. This scraper is supported by a pin m fixed beneath its lower end,
and the upper end of the scraper bears upon the surface of the cylinder C. A
double ended spring n is pivoted at o, one end of said spring bearing upon the pin
support p whilst the other end bears against the scraper 1, whereby the edge of the
said scraper may be pressed more closely against the cylinder C. The cylinder is
caused to revolve by turning the crank q, and handle attached to one of the
journals a.
When the cylinder C containing the ice is caused to revolve, the S shaped or
curved plates d d d inside the cylinder, aided by the centrifugal power developed by
such rotation, serve to hold the ice or freezing mixture all round against the inner
surface of the cylinder, thus imparting a sufficient degree of cold to freeze the thin
layer of cream which is taken up on the outer surface of the cylinder.
This layer of cream is but a film taken from the transfer roller E by its contact
with the cylinder, consequently the cream is thoroughly frozen before it is removed
by the scraper.
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 :-
:-
1. An ice cream freezer, comprising a casing, in which is placed a cylinder made
of metal, enamelled or otherwise, or of enamelled porcelain, said cylinder being
mounted so as to revolve in said casing, and adapted to contain ice or other freezing
mixture, and having S or curved shaped walls or plates therein, a transfer roller
or rollers pivotted parallel with, but out of the vertical plane of said cylin ler, a
cream trough, a scraper, and receptacle for the frozen cream, substantially as herein
set forth, and described and illustrated by the accompanying drawings.
2. In an ice cream freezer, a casing and a cylinder revolving therein, said
cylinder having a series of S shaped walls or plates radiating from the centre
outwardly, substantially as herein set forth, and described and illustrated by the
accompanying drawings.
3. In an ice cream freezer a casing and a cylinder revolving therein, and a transfer
roller or rollers suspended within said casing, said roller or rollers being weighted
and adapted to bear against the surface of said cylinder, substantially as set forth,
and described and illustrated in the accompanying drawings.
4. In an ice cream freezer, a casing and a cylinder revolving therein, and a scraper
made of metal or porcelain suitably supported, having one edge bearing against said
cylinder by means of spring tension, substantially as herein set forth, and described
and illustrated by the accompanying drawings.
5. The improvements in ice cream freezers substantially as and for the purposes
hereinbefore described, and set forth and illustrated by the accompanying drawings.
Dated this 15th day of November 1894.
REGINALD W. BARKER.