Improvements in Butter Churns.
Year: 1896

page_text: Date of Application, 6th Nov., 1896-Accepted, 9th Jan., 1897
COMPLETE SPECIFICATION.
Improvements in Butter Churns.
I, WILLIAM CHEELD, of Berkhampstead, in the County of Hertford, Engineer,.
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 that class of churns which consists of a cylindrical,.
more or less conical, or other suitably shaped tub or drum arranged to rotate on
a more or less vertical axis, and having within it a stationary beater or dasher
furnished with wings which divert the cream from the internal periphery of the
drum and guide it inwards so as to strike against certain vertical bars connected
with the beater or dasher, whereby the cream is dashed about violently and is.
converted into butter with comparative rapidity.
Heretofore, so far as I am aware, in a churn of this kind having a stationary.
heater or dasher of the kind described, the said beater or dasher has been carried
down nearly to the bottom of the churn drum so that the said beater or dasher
acts upon the mass of the cream at the lower part of the churn as well as upon.
that which has been carried up to and spread out by centrifugal force on the
upper part of the inner periphery of the churn drum. The immersion of the
beater or dasher in the mass of cream at the lower part of the churn drum causes
very considerable resistance to the rotation of the said drum which renders
necessary the expenditure of considerable power to work the churn, besides which
it causes the churn drum to slip past the cream thereby making the churning-
effect on the cream comparatively slow. The object of my invention is to utilize,
in such a churn, a beater or dasher of the above mentioned kind in such a way that
the power required to work the churn shall be materially reduced, and the churning-
effect improved as compared with the usual arrangement.
In the accompanying sheet of drawings
Figure 1 is a vertical sectional elevation of a rotatory churn with my invention.
applied thereto;
Figure 2 is a plan of the churn drum A seen in Figure 1, but with the cover-
removed, showing the stationary beater or dasher partly in section; and
Figure 3 is a section of the beater or dasher taken on the line - of Figure 1..
A is the churn drum rotated by gearing BC in the usual way. D is a fixed
spindle on which is mounted the stationary beater or dasher which is made with.
top and bottom crossbars E E' supported by the central stationary spindle D or
otherwise, and with vertical bars F, and wings G between the said cross bars much.
in the same way as such beaters or dashers have already been proposed to be
made; but instead of making the beater or dasher of such a depth that it descends.
into the mass of cream at the bottom and lower corners of the revolving drum A,
I make it of much less depth, say about half the usual depth, as shown in Figure 1,
so that it only acts upon the film of cream carried up by centrifugal force and spread.
out on the upper part of the inner periphery of the drum, as shown by the dotted
outline H in Figure 1, the wings & skimming off the cream at that part as the
drum A revolves in the direction of the arrow in Figure 2 and guiding it inwards.
so that it strikes violently against the vertical bars F, is broken up by them and
then falls to the bottom of the drum A near the centre thereof when it gradually
becomes again influenced by the centrifugal force and is carried outwards and.

page_text: upwards to be again skimmed off by the wings G. of the beater or dasher, the whole
of the cream being thus circulated round and round, and more or less violently
dashed about and broken up the bars F, in such a manner that the formation of
the butter granules is greatly facilitated, and the power required to work the
churn much reduced as compared with that required when the beater or dasher
extends down into the cream at the bottom and lower corners of the drum A.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, I declare that what I
claim is :-
In a churn rotating on a more or less vertical axis the employment of a
stationary beater or dasher having wings G and bars F, and adapted to skim
off and break up the cream carried up and spread out on the upper part of the
inner periphery of the churn drum without acting on the cream at the bottom.
and lower corners thereof, substantially as described.
uay
W. CHEELD,
Per W. H. Beck,
115 Cannon Street, London, E.C., Agent.
W. CHEELD,
Per W. H. Beck,
115 Cannon Street, London, E.C., Agent.