Improvements in Freezing-machines.
Year: 1891

page_text: Date of Application, 11th Feb., 1891-Accepted, 14th Mar., 1891
COMPLETE SPECIFICATION.
Improvements in Freezing-machines.
I, CARL WIEDEMANN, of Böckmannstrasse 7, Hamburg, in the Empire of
Germany, Manufacturer, do hereby declare the nature of this invention, and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
This invention relates to freezing-machines in which the ice cream or the like is
produced in a vessel, which rotates in a tank filled with ice or freezing mixture,
and the improvements consist in the propelling mechanism for rotating the freezing
vessel and in a device for scraping off the ice cream frozen to the vessel auto-
matically, consisting of a scraper adjustably arranged in the lid.
The invention is illustrated in the accompanying drawing in which
Fig. 1 is a vertical central section and Fig. 2 a horizontal section of a machine
provided with the improvements.
In the upper part of a frame A is the tank B containing the ice or freezing
mixture and provided with a tap x for outlet of the water, the shaft to passes
vertically upward through the bottom of this tank and is journalled above in a
socket i fixed on the bottom and at the lower end in a step bearing p.
C is the freezing vessel, which can be placed loosely upon the upper end w¹ of
the shaft to and is rotated thereby by means of a projection or the like. On the
lower part of the shaft te is fixed the bevelled toothed wheel which gears into
a second wheel r on a shaft a operated by hand or power_gear so that upon the
rotation of the shaft a the vessel C will rotate in the tank B.
For closing the tank B the lid D is provided being fastened to the edge of the
said tank or to the frame. The lid D has a circular opening corresponding to the
circumference of the freezing vessel C, which opening can be closed by means of a
second lid D', which can be fastened to the lid D or direct to the frame by means
of the clasps s or in any other suitable manner.
The edge of the freezing vessel may also be guided suitably in the opening of
the lid D. In the lid D' is fastened in a guide the scraper F serving for scraping
off the ice cream or the like frozen to the walls of the vessel C, said scraper may
be fastened in its guide, after having been adjusted to a correct position with regard
to the wall of the vessel C.
By the particular arrangement and stationary journalling of the propelling
mechanism underneath the tank B and vessel C the latter may be easily removed
for emptying or cleaning the tank and vessel.
By this arrangement also the above described device of the scraper on the lid is
rendered possible, since it is free of the propelling mechanism. The scraper itself
does not require further attention after it has been adjusted. As shown in th
drawing the rotation of the shaft a can be transferred to a second machine by means
of the bevelled toothed wheel and the shaft a¹ and similarly to a third machine
and so on, so that several apparatus may be worked by suitable power and can be
attended to by one attendant.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. A freezing-machine having mechanism for revolving the vessel C consisting
of the shaft to traversing the bottom of the tank B bevelled gear and shaft a
the said shaft w being journalled and connected to the vessel C substantially as set
forth.

page_text: 2. A freezing-machine having the vessel C propelled by a rotary shaft w con-
nected therewith substantially as set forth in combination with the adjustable
scraper F for the purpose described.
Dated this 11th day of February 1801
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C., Agents for the Applicant.