AN IMPROVED KNEADING AND MIXING MACHINE
Year: 1884

page_text: I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co, Patent
Agents, Southampton Buildings, London, in the County of Middlesex do hereby
declare the nature of said invention for "AN IMPROVED KNEADING AND MIXING
MACHINE" to be as follows
This invention relates to machines for kneading dough and for mixing together
dry, half dry and wet matters, as in the manufacture of ultramarine, gutta percha,
snuff, mortar, and the like.
In carrying the said invention into practice I provide a frame which carries a
vertical shaft. A bowl having in the centre a large boss in which a bearing is
formed, is supported by, and rotates on, the said shaft.
The interior of the said bowl forms an annular groove, the side walls of which
are vertical at the top but contracted towards the bottom, the vertical section of
the said bottom forming about a semi-ellipsis cut along the longitudinal axis. In
this annular groove arms are adapted to revolve the said arms projecting from
one or more shafts placed at an angle to the plane of revolution of the bowl.
Each arm in its revolution describes a circle but as the plane of this circle is at
right angles to the axis of its shaft the said circle projected onto a vertical plane
will form an ellipsis. The angle at which the shaft carrying the arm is set
determines the shape of the bottom of the bowl.
The said arms are bent in such a manner that they will touch the surface of the
groove chiefly at its bottom and at the sides close to the centre of the bowl. The
shaft carrying the arms runs in a bearing on the frame, and is, at the top, provided
with a chain pulley over which a chain passes, which chain after having been
drawn round two guide pulleys is passed around the bowl in a groove especially
adapted for this purpose whereby the said bowl is revolved. The revolution of the
bowl may be effected in other manners than that above described.
When the machine'is worked by hand, a crank is attached to one end of the
shaft carrying the arms, but when by any machine motor, the motive power is
transferred to the said shaft by means of gearing or in any other suitable manner.
When using the machine, the matters to be mixed are introduced in the bowl,
whilst this and the arms are made to revolve, the latter effecting the mixing.
Dated th
1004

page_text: •
"
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co, Patent Agents,
Southampton Buildings, London, in the County of Middlesex do hereby declare
the nature of my invention for "AN IMPROVED KNEADING AND MIXING MACHINE
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 kneading dough and for mixing substances
in either a dry, moist or wet condition, as in the manufacture of ultramarine, gutta-
percha, snuff, mortar and the like.
In the accompanying drawing
Figure 1 is a plan, and
Figure 2 a vertical section of the improved machine.
The said machine comprises a frame A which carries a vertical shaft B.
C is a bowl having at the centre a large boss in which a bearing is formed,
adapted to fit over, and rotate upon, the projecting portion of the said shaft.
The interior of the said bowl forms an annular groove, the side-walls of which
are vertical at the top but contracted towards the bottom, the vertical section of
the said bottom forming about a semi-ellipsis, cut along the longitudinal axis.
In this annular groove, arms D are adapted to revolve, the said arms projecting
from one or more shafts placed in the same manner as the shaft E, the axis of
which is at an angle to the plane of revolution of the bowl. Each arm, in its
revolution, described a circle, but, as the plane of this circle is at right angles to the
axis of its shaft E, the said circle projected onto a vertical plane will form an
ellipsis. The angle at which the shaft, carrying the axis, is set determines the
shape of the bottom of the bowl.
The greatest ellipsis, thus produced, will be obtained by developing the circle,
which the point (on any of the arms) situated farthest away from the axis of the
shaft describes when revolving. The axis of the shaft E is placed so as to cut the
axis of the groove; and the centre of the greatest circle which any point of any of
the arms can describe, is situated at this point of intersection. Thus it is evident,
that, in order to make the arms touch each point of the bottom of the groove as
close as possible, the vertical section of this said bottom is constructed in conformity
with the greatest ellipsis thus obtained. In order that more than one point on the
arms may touch the bottom of the groove, the said arms are bent as shewn in the
drawing, whereby the upper parts of the arms will touch the outer surface of
the groove and the lower part chiefly the bottom and the sides of the groove close
to the centre of the bowl. The lower parts of the arins are, besides, bent laterally,
as shewn in Figure 1, in order to make them more effective.
The shaft E runs in a bearing F on the frame and is, at the top, provided with a
chain-pulley G, over which a chain H passes, which chain, after running over two
guide-pulleys I, K, is passed around the bowl in a groove L especially adapted for
this purpose. By rotating the shaft E the bowl will be revolved. The revolution
of the bowl may, however, be effected in other manners than that above described,
according to circumstances.
When the machine is to be worked by hand, a crank is attached to one end of
the shaft E, but, when by any machine motor, the motive power is transferred to
the said shaft in the manner shewn in the drawing, by means of gearing, or in any
other suitable manner. When using the machine the substances to be mixed are
introduced into the bowl whilst this and the arms are made to revolve, the latter
effecting the mixing.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
In a kneading and mixing machine, a bowl supported on a vertical shaft, the
interior of the said bowl forming an annular groove, the bottom of which forms, in
vertical section, part of an ellipsis, and a number of arms bent in the manner
described above, and projecting from one or more shafts, adapted to revolve in the
said groove, the axis or axes of the said shaft or shafts forming an angle or angles
with the plane of revolution of the bowl, substantially as described above, and
illustrated in the accompanying drawing.
Dated this 15th day of November 1884.
HASELTINE, LAKE & Co.,
For the Applicant.