An Improved Freezing Machine.
Year: 1893

page_text: Date of Application, 6th Dec., 1893
Complete Specification Left, 6th Sept., 1994-Accepted, 6th Oct., 1894
TROVISIONAL SPECIFICATION.
An Improved Freezing Machine.
1, PERCY RICHARD JULIUS WILLIS, of 55 Chancery Lane, in the County of
London, Consulting Engineer, do hereby declare the nature of this invention
(a cominunication to me from abroad by William Smith Rolston, of 44 Spring
Street, Elizabeth, N.J., U.S.A., Inventor,) to be as follows:-
This invention has reference to that class of freezing machine comprising an
outer receptacle to contain freezing mixture, and an inner receptacle to contain the
liquid to be frozen.
The object of the invention is to provide simple means whereby the scraper or
agitator (contained within the inner receptacle,) and the inner receptacle are caused
to rotate in opposite directions, aud at the same time, to make the lid of the latter
removable and separate from the gearing employed.
The inner receptacle-as heretofore, is journalled centrally in a bearing-block
resting on the bottom of the outer receptacle; and the spindle of the agitator is
journalled in a like manner on the bottom of the inner receptacle, and projects
slightly through a bearing centrally supported by radial arms at the top of said
receptacle.
Now by this invention, the part of the agitator spindle which projects above the
centrally-supported bearing aforementioned, is squared to fit a square socket formed
at the lower end of a vertical spindle mounted to rotate in a bearing centrally
supported by radial arms projecting inwardly from an annular frame or ring resting
upon the top edge of the outer receptacle. The last named spindle has a fixed
bevel-wheel at its upper end, and a loose bevel-wheel at its lower end; the loose
wheel having a square central boss adapted to fit a square central socket on the lid
of the inner receptacle. The lid is secured to the receptacle by suitable lugs
which prevent it from turning independently. A horizontal shaft is journalled
in bearings in the annular frame aforementioned and has a winch-handle at one
end and a bevel-wheel at the other, which meshes with the two bevel-wheels
aforementioned.
It will be readily understood, that when the winch-handle is rotated, the agitator
will revolve in one direction, and the inner receptacle in an opposite direction; and
further, that the spindle carrying the bevel-wheels being separate from, and only
connected to the agitator-spindle by the square socket, and the bevel-wheel being
connected to the lid of the inner receptacle by a square boss and socket, permits
the whole of the gearing to be removed when the lid of the inner receptacle is to
be opened.
Dated this 6th day of December 1893
PERCY R. J. WILLIS,
Applicant.
I, PERCY RICHARD JULIUS WILLIS, of 55 Chancery Lane, in the County of
London, Manager, do hereby declare the nature of this invention, (a communication
to me from abroad by William Smith Rolston, of 44 Spring Street, Elizabeth,
N.J., U.S.A., Inventor,) and in what manner the saine is to be performed, to be
particularly described and ascertained in and by the following statement :—
This invention has for its object the provision of an apparatus for making
D

page_text: Teams and freezing various fixtures, which is simple in construction, enc
in operation, and not liable to get out of order.
Reference being had to the drawings,
Fig. 1, is a sectional elevation of the apparatus.:
Fig. 2, is a plan thereof with the top of the freezing cylinder removed to expose
the scraper and agitator:
Fig. 3, is an elevation, partly in section:
Fig. 4, is a plan of the freezing cylinder and its cover:
Fig. 5, is a view of the underside of the lower member of the driving mechanism
and its spindle.
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The ice receptacle A has upon its bottom a bearing A', to which is fitted the
journal B the bottom of the freezing cylinder C. The cover D of the freezing
cylinder has a square central socket E, and has tongues D' upon its periphery, and
which overhang the lower edge to engage lugs C upon the periphery of the
cylinder for locking it and the cover together and thereby preventing independent
movement thereof.
The inner lid D2 rests upon projections D³ on the inner surface of the cylinder
and has a central aperture, from the periphery of which projects a flange D. This
lid prevents the contents of the ice receptacle A from entering the freezing
cylinder C. The flanges prevent liquid which may leak beneath the outer lid or
cover D-from percolating over the edges of the lid D into the freezing cylinder.
The scraper S is rectangular in shape and has inwardly-projecting vanes T
extending from one of its sides. A square head projects from the upper end of the
scraper, and is formed with a round socket S concentric therewith. The central
agitator bas a spindle R, round at the top to fit the socket in the upper end of the
scraper; but its lower end R' is squared to engage a socket of similar shape in the
bottom of the cylinder. The lower end of the scraper is perforated, as shown in
Figs. 1 and 3, for the insertion of the agitator spindle R. This spindle has
projecting vanes R2 as shewn.
The driving mechanism comprises a crank-shaft G mounted in the removable
frame F which is secured upon the receptacle A. At the outer end of the crank-
shaft is a crank H, and its inner end is fitted with the bevel gear wheel M. The
frame is provided with the bearing F concentric with the freezing cylinder, and
in this bearing is mounted the spindle L carrying at its upper end the fixed bevel-
gear-wheel N and at the lower end the loose bevel-gear-wheel O; both gear-wheels
meshing with the gear-wheel M. The spindle 1. has an enlargement L' at its lower
end which is fitted within the gear-wheel O to sustain the latter in place, and with a
square socket L² therein fitted to the head S¹ upon the scraper S. The gear-
wheel is formed with a square boss O' adapted to fit within the socket E in the
cover D.
By turning the crank H to the right, the revoluble parts of the apparatus are
made to move in the directions indicated by the arrows in Fig. 2. The arrow U
shews the direction of the freezing-cylinder, which is actuated from the wheel O
by means of the cover D engaging said wheel. The arrow V indicates the
direction of rotation of the scraper S which is connected with the gear-wheel N by
means of the spindle L in engagement with the square head S¹. The arrow W
shews the direction of movement. of the agitator whose stem is squared to fit a
socket in the bottom of the freezing cylinder with which it is made to rotate.
It will be understood from the above description that the principal feature of my
invention is the means of detachably coupling together the freezing cylinder cover
and its driving-gear; consisting of an angular boss upon one of such members fitted
to a socket upon the other member.
Heretofore the freezer cover has been cast integral with the driving-gear; but
for small freezers for household use, the attachment to the cylinder cover of a
portion of the driving-mechanism involves serious inconvenience in applying and
detaching the several members of the freezer to introduce and withdraw the
material to be operated upon. By reference to the drawings it will be seen that

page_text: the improvement provides a construction whereby the entire freezing cylinder and
its cover may be made of sheet metal in the ordinary manner and the driving
mechanisin may be lightly and cheaply made; while the whole apparatus possesses
greater convenience of manipulation, durability and cheapness of manufacture than
others now in use.
In order to freeze by this apparatus, ice and salt or other well-known freezing
mixture is deposited in the receptacle A, and the liquid, cream or the like to be
frozen is placed in the freezing cylinder C. The agitator is then rotated until the
contents of the freezing cylinder is frozen.
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
The combination with the icc receptacle A, the freezing cylinder C having its
cover D locked from rotation thereon, and the agitator R and scraper S, of the
inner cover or lid D removably fitted within the freezing cylinder C, and of the
removable frame F carrying the crank-shaft G having the gear-wheel M upon its
inner end and the spindle L with the fixed gear-wheel N and loose gear-wheel O
meshing with the gear-wheel M, the cylinder cover D being coupled detachably to
the gear-wheel O by means of an angular boss upon one of such members fitted to
a socket upon the other member, the scraper being coupled to the gear-wheel N by
means of the spindle L, and the agitator being rotated with and by means of the
cylinder C, as and for the purpose set forth.
Dated this 6th day of September 1894.
PERCY R. J. WILLIS.