s.
Year: 1897

page_text: Machines.
We, ARTHUR ENOCH FROST, Director of the Dairy Outfit Company, Limited,
and THE DAIRY OUTFIT COMPANY, LIMITED, both of 251, 253, & 255 Pentonville
Road, in the County of London, do hereby declare the nature of this invention to
be as follows:-
To the periphery of a Barrel Churn we fasten a short piece of pipe made of metal
or other substance, one end of the said pipe opening inside the Churn and the
other being open to the atmosphere outside. The end of the pipe inside the
Churn is shaped to form a seat for a valve, we make a valve to fit the said seat
water tight when closed. We attach said valve by a rod to a piston made to fit
inside the said pipe such piston being so thick or deep as while sliding freely up
and down inside the said pipe, to guide the valve truly to its seat when it closes.
A spiral spring is fitted over the rod above mentioned and the compression of this
spring between the end of the Piston and a collar or shoulder inside the said pipe,
keeps the valve closed. To the outside of the said piston we attach by means of a
long metal loop, a lever one end of the said lever being fastened to a stud fixed on
the outside of the Churn by a staple or hinge to form the fulcrum and we attach to
the other end of the lever, a weight, we fix the lever and weight in such a position
that, when in the course of revolution it comes above the axis, it descends on the
end of the Piston with a striking action, the blow compresses the Spring above
mentioned and opens the valve and so acts as an automatic vent. It is obvious
that the same device can be supplied to an End-over-End Churn or a Churn of any
other shape that revolves upon a horizontal axis, also to other revolving machines
that require vent.

page_text: Improvements in the Vent of Butter Churns and other Revolving
Machines.
We, ARTHUR ENOCH FROST, a Director, and THE DAIRY OUTFIT COMPANY,
LIMITED, both of 251 to 255 Pentonville Road, King's Cross, London, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
Our invention relates to certain improvements in the vents of butter churns and
other revolving machines.
It is known that in the manufacture of butter gases are evolved which should be
allowed exit from the churn.
A vent constructed according to this invention is illustrated in the accompanying 1
drawing which forms part of this specification such vent being illustrated as
being one form in which the invention can be carried out.
In these drawing-
-
Fig. 1 is a sectional side elevation of the vent.
Fig. 2 is an end elevation of same.
Fig. 3 is a side elevation shewing same in a reversed position and
Fig. 4 is a perspective view of a churn having the vent applied thereto.
To a part of the churn a such as the periphery, or in the case of an end over end
churn as shewn in Fig. 4 the end of same we attach a short tube pipe or
cylinder b. This may be screwed into the body of the churn so as to abut or nearly
abut against a sleeve b¹ screwed in from the other side. A passage through these
parts communicates with the interior of the churn and the open air through the
medium of openings c in the side walls of the tube b.
In the upper open end of the part 6 is a sliding plug or piston d to which is
attached a spindle e carrying a conical or other suitable valve f which seats in a
corresponding recess in the end of the sleeve b¹.
On a shoulder formed with part b is a plate or disc g having a sleeve which
together with the piston or plug d serves to guide the spindle e the disc or plate
acting as a seat for a spring h which is in compression between it and the plug or
piston. In the head of this plug d is a loop of wire or slotted plate through
which passes a weighted lever jone end of which is pivoted to a post or stud k
said lever resting when in the position shewn in Fig. 1 on the plug or piston d.
When affixed to a churn of the class illustrated it will be understood that when
in the course of revolution the end of the churn is coming into its upper position
the lever is brought by the weight with a striking action upon the plug or piston
the blow compressing the spring and momentarily opening the valve but
sufficiently to allow the gases to escape through the openings c. The spring at
other times forces the plug or piston out and keeps the valve tightly on its seat.
As will be seen in Fig. 3 the loop i or slotted plate allows the weighted lever to fall
when the churn is reversed (and assists in keeping the valve still tight) so that it
has a sufficient distance to travel when reversed to provide the necessary striking
action.
It is obvious that the vent is equally applicable to rotary churns of other sort or
to revolving bodies which require ventilating during their rotation and in which
the contents must be prevented from escaping.
Having now particularly described and ascertained the nature of our said

page_text: invention and in what manner the same is to be performed we declare that what
we claim is: —
1. A vent for butter churns and other revolving machines provided with a valve
adapted to be opened at intervals by the blow of a weighted part but maintained
5 otherwise closed by a spring substantially as described.
2. The improved vent for butter churns and other revolving machines con-
structed substantially as described and illustrated.
PHILIP M. JUSTICE,
55 and 56 Chancery Lane, London, W.C.,
Chartered Patent Agent for the Applicants.