Improvements in Apparatus to be Used for Beating, Whipping, or Mixing Cream, Eggs, and similar Liquid or Semi-liquid Substances.
Year: 1888

page_text: Improvements in Apparatus to be Used for Beating, Whipping,
or Mixing Cream, Eggs, and similar Liquid or Semi-liquid
Substances.
I DAVID CRICHTON of 1 Gladstone Place, Aberdeen, in the County of Aberdeen
Student, 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 to produce a cheap and simple apparatus for beating,
whipping, or mixing cream, eggs and similar viscous liquid, or semi-liquid substances,
by means of which, a good stiff froth is formed in a short time by a simple up and
down motion of part of the said apparatus.
The invention will be well understood by reference to the accompanying drawings
in which Figure 1 shews a sectional elevation of my invention; Figure 2 a plan, and
Figure 3 a bottom plan of the same. Similar letters of reference indicate corresponding
parts in all the Figures.
The invention consists of a cylinder A within which is a plunger or piston B packed
round its edge with hemp, cotton or other suitable packing so as to work airtight
within the said cylinder.
The piston rod C passes through a short tube F formed in the centre of the top
plate E of the cylinder, and terminates in a ring or other convenient holding device D.
The bottom G of the cylinder, consists of a perforated plate, or is formed of wire
gauze of a suitable mesh. Three or more feet H are soldered or otherwise affixed
to the bottom of the cylinder. The plate E may be soldered or otherwise affixed
to the top of the cylinder A, or it may form part of a cover J secured to the
cylinder A by screwing thereover or by an equivalent device. Similarly the per-
forated plate or wire gauze G may be soldered or otherwise affixed to the bottom of
the cylinder, or it may form part of a cover K secured to the cylinder A by screwing
thereover, or by an equivalent device in which latter case the feet H are soldered or
otherwise affixed to the bottom of the cover K.
The object of these top and bottom covers J and K is, that they can be quickly
removed when it is desired to clean or repair the apparatus.

page_text: In constructing a cheap form of my invention, I take a tube A of block tin, and
make the piston rod C of ordinary metal wire, and pass it through the tube F of
the cover J. The piston B I make in the form of a reel or bobbin with a central
longitudinal aperture through which I pass the end of the piston rod and solder or
clench it on to the bottom plate of the piston. I then wind hemp, cotton, or
other packing round the reel or bobbin of the piston and pass it into the tube A
and secure the cover J to the said tube by means of a pin on the tube and a slot
in the cover together forming a bayonet joint. In the same manner I secure the
cover K over the bottom of the tube.
«
The action is as follows:-The apparatus is placed with the feet H resting on the
bottom of the vessel containing the cream, eggs, or other substance to be beaten,
whipped," or mixed. The piston is then raised, and the egg, cream, or other substance
will be drawn into the tube A through the perforated bottom G, the piston is then
forced down and the egg, cream, or other substance forced out from the tube A through
the perforated plate G. This operation is repeated until the egg, cream or other
substance is sufficiently beaten, whipped or mixed.
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 1
claim is
The construction and use of a cylinder A with plunger or piston B working air
tight therein, feet H, and perforated bottom G, and with or without the covers J and K,
the whole combined and operating substantially as and for the purpose hereinbefore
set forth and illustrated in the accompanying drawings.
CASTLE SMITH,
"Invention " Office,
54, Fleet Street, London, E.C.,
Agent for the Applicant.
Puttu
tins Sth day of December 1000.
CASTLE SMITH,
"Invention " Office,
54, Fleet Street, London, E.C.,
Agent for the Applicant.