Improvements in Churns.
Year: 1899

page_text: COMPLETE SPECIFICATION.
Improvements in Churns.
I, LEWIS AUGUSTUS ASPINWALL, residing at No. 611, West Washington Street,
Jackson, in the State of Michigan, United States of America, Inventor and
Manufacturer, 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;-
-
My invention relates to that form of churn known on the market as: the
'barrel" churn. Heretofore these churns have usually been mounted in fixed
trunnions and have been rotated by a moving arm and crank, but only a rotary
motion has been imparted to said churns. The object of my invention is to
impart to the churn besides the rotary motion an oscillating motion.
In carrying out my invention I provide a frame forming a platform upon which
the operator stands, and to this platform is pivoted a rocking frame, the barrel
churn being pivoted about midway of said frame upon trunnions with which
cranks are formed. Pitman bars which are also pivoted to the platform at one
end are connected to the cranks at their other ends.
The upper end of the rocking frame serves as a handle and it is pivoted to the.
platform at its other end. As the operator standing upon the platform grasps.
the handle of the rocking frame and moves the same back and forth, the cranks
are turned by the action of the pitman bars and the barrel churn is given a
rotary movement, and by the rocking motion of the frame an oscillating move-
ment.
In the drawing, Figure 1 is a side elevation and Fig. 2 a plan representing my
improvement.
The platform is composed of the parallel bars a a¹ connected at one end by the
series of cross strips 6 which serve as a support for the operator to stand upon.
The oscillating frame is composed of the parallel bars e pivoted at 2 to the
bars a a', and they are connected at their upper ends by a handle d. Brace
bars e e¹ are connected to the parallel bars e el adjacent to the pivots 2. These
bars serve as a brace to the oscillating frame and in connection with the pivot
bolts 2 maintain a fixed relation to the bars a a¹ at their free ends, because said
bars are held by the series of cross strips rigidly together at their other ends.
The barrel f, which is of usual character and the structure of which forms no
part of my invention, is provided with trunnions h having cranks h¹ h¹. The trun-
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page_text: nions are pivoted about midway to the bars cc¹ by notching the edges of said bars
and providing a cover plate 5 over the said trunnions and notches of the bars cc¹.
The pitman bars are pivoted by the bolts 3 to the bars a a¹ adjacent to the
series of cross strips 6 and the other ends of the pitman bars i i¹ are preferably
split and provided with holes for the ends of the cranks h', the split ends being
held together by screw bolts 4 in a manner usual in machines made of wood with
bearings in the wood.
The bars cc rock on the pivot bolts 2 and the pitman bars on the pivot
bolts 3, the operator standing upon the series of cross strips and grasping the
handled to effect these movements and at the same time rotating the barrel by
the cranks h¹ and impart an oscillating motion to the barrel, and thereby agitate
the contents more effectively. The construction of my improvement is such that
the pivot bolts 3 can be removed and the parts folded down into a compact and
convenient knock down condition for transportation.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what
claim is :-
First The combination with the barrel churn and a platform, of a hand
operated oscillating frame pivoted to the platform and to which the barrel is
pivotally connected, trunnions for pivotally supporting the barrel churn and
cranks connected therewith and pitman bars also pivoted to the platform at one
end and to the cranks at their other ends for imparting to the barrel churn both
a rotary and oscillating movement, substantially as set forth.
Second: The combination with the barrel churn and a platform, of a hand
operated oscillating frame pivoted to the platform at one end and having a handle
at the other end, trunnions connected to the barrel and pivoted in the oscillating
frame about midway and having cranks connected to said trunnions, pitman bars
pivoted to said platform at one end and connected to the cranks at the other end
for imparting a rotary and oscillating movement to the churn, substantially as
set forth.
Third: The combination with the barrel churn and the trunnions and cranks
connected therewith, of a platform comprising parallel bars connected at one
end by a series of cross strips, an oscillating frame composed of parallel bars, a
handle connecting the same at the upper end and pivot bolts connecting the
same at their lower ends to the parallel bars of the platform, and brace bars
between the lower ends of the parallel bars of the oscillating frame, pitman bars
pivoted at one end to the opposite end of the parallel bars of the platform and
adjacent to the series of connecting strips, said pitman bars being split at their
free ends and provided with bearings engaging the cranks and screw bolts for
clamping the same, substantially as and for the purposes set forth.
LOTOATA IN ADV ATATONINOY AN
BREWER & SON,
London & Leeds, Agents for the Applicant.