Improvements in Rakes or Stirrers for Mashing Machinery.
Year: 1890

page_text: Date of Application, 23rd June, 1890
Complete Specification Left, 21st Mar., 1891-Accepted, 25th Apr., 1891
PROVISIONAL SPECIFICATION.
Improvements in Rakes or Stirrers for Mashing Machinery.
We, HENRY HEWITT HUMBER, of St. James' Lane, in the City of Winchester,
Brewer, and HENRY WILLIAM NEILD, of Shoe Lane, in the City of London,
Engineer, do hereby declare the nature of this invention to be as follows :--
This invention can be applied to existing mashing machinery. A fork of iron is
fixed to the end of the arm of ordinary rake machinery; to this fork, a.
rectangular curved plate of metal is hinged, the hinge being where the bend of the
fork terminates and at a right angle to the arm and parallel to the horizontal shaft
that carries the arms.
The arm with the attachment should be of such a length, that when revolving the
plate just clears the false bottom of the mash tun. When the rake is set in motion,.
the plate lifts the mash, but so soon as it reaches the perpendicular it falls over and
takes a position at nearly right angles to the arm, this angle gradually lessens as
the arm descends until the plate touches the fork at the bottom and is again in the
starting position.
The appliance is a perfect and rapid equaliser of temperature and consistence as
it lifts its load from the bottom and throws it over on the surface, at the same time
giving the mash buoyancy. The whole action of the attachment is to raise (there
being no forcing or pressing down of the goods at all) and when in its downward
course the edge of the plate enters the mash it cuts its ways in, thus avoiding the
splash and forcing down that would result if the plate was not hinged. The plate
is weighted on the top, in a position to overcome the resistance of the mash to the
face of the plate which might otherwise prevent its falling over.
Dated this 23rd day of June 1890.
H. H. HUMBER.
HENRY W. NEILD.
COMPLETE SPECIFICATION.
Improvements in Rakes or Stirrers for Mashing Machinery.
We, HENRY HEWITT HUMBER, of St. James' Lane, in the City of Winchester,.
Brewer, and HENRY WILLIAM NEILD, of Shoe Lane, in the City of London,.
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 can be applied to existing mashing machinery. An iron clip is.
fixed to the end of the arm of ordinary rake machinery; to this clip a rectangular
curved plate of metal is hinged, the hinge being where the bend of the fork
terminates and at a right angle to the arm and parallel to the horizontal shaft that
carries the arms.
The arm with the attachment should be of such a length, that when revolving
the plate just clears the false bottom of the mash tun. When the rake is set in
motion, the plate lifts the mash, but so soon as it reaches the perpendicular it falls
over and takes a position at nearly right angles to the arm, this angle gradually
lessens as the arm descends, until the plate touches the clip at the bottom and is.
again in the starting position.
The appliance is a perfect and rapid equaliser of temperature and consistence
as it lifts its load from the bottom and throws it over on the surface, at the same
time giving the mash buoyancy. The whole action of the attachment is to raise
SP C21

page_text: (there being no forcing or pressing down of the goods at all) and when in its down-
ward course the edge of the plate enters the mash it cuts its way in, thus avoiding
the splash and forcing down that would result if the plate was not hinged. The
plate is weighted on the top, in a position to overcome the resistance of the mash
to the face of the plate which might otherwise prevent its falling over.
In order that our said invention may be fully understood and readily carried into
effect we will proceed to describe the drawings hereunto annexed.
Figure is an elevation and Figure 2 is a transverse section, showing the
attachment or appliance full size or thereabout.
Figure 3 is a perspective view showing the rake or stirrer in its place in the
mash tun; except that its arms are provided with our lifting attachment the rake
shown in Figure 3 is of ordinary construction; it consists of a shaft a with arms a¹
geared by bevilled wheels with an upright axis in the centre of the mash tun and
also by a pinion with a ring of teeth around the interior of the tun. The axis a
thus not only rotates but also travels around the centre, its position being always
horizontal and radial to the tun within which it works.
In Figures 1 and 2 part of one of the rake arms with its teeth is indicated by
dotted lines. is the iron clip, locked fast on the end of the arm by the aid of the
screw bolts b¹³. e is the rectangular curved plate hinged to the clip . is the
joint pin. is a stop upon the plate e which coming against a corresponding stop
on the clip limits the movement of the plate around the joint pin. In Figures
and 2 the plate is represented in the position it occupies when it is about to descend
into the mash but before the plate passes under the shaft it turns about the joint
through an angle of about 90 degrees and sets itself radially. The plate e whilst it
rises retains its radial position and acts efficiently to lift the material. In passing
over the shaft the plate falls again to the position in which the Figures 1 and 2
represent it.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
The combination with the rake arms of a rake working in a mash tun as herein
set forth, of plates e hinge jointed to the arms in such manner as to enter edgewise
into the mash and afterwards to set themselves radially and lift the mash as
they rise substantially as described.
Dated this 20th day of March 1891.
CARPMAEL & Co.,
Agents for the Applicants.