Improvements in Root Pulpers and Slicers, and in the Knives or Cutters therefor.
Year: 1886

page_text: Date of Application, 30th Mar., 1886.
Complete Left, 29th Dec., 1886.
Complete Accepted, 1st Feb., 1887.
Improvements in Root Pulpers and Slicers, and in the Knives
or Cutters therefor.
I FRANK KNIGHT WOODROFFE of Rugeley, in the county of Stafford, Mechanical
Engineer do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in machines or apparatus for slicing, cutting
and pulping turnips and other roots and vegetables the object of the improvements
being to simplify the construction of such machines and to improve their action.
In carrying out my invention I employ a fixed combined cutting and pulping knife
the said knives being of such a construction as to dispense with the necessity of
adjustment as has hitherto been necessary.
My improved knives are mounted upon a disc or barrel the knife being so hent or
dished that the cutting edge thereof is at such a distance from the surface of the disc
or barrel as to give the required thickness of slice and also to give sufficient clearance
for the pulping. This arrangement enables me to dispense with the necessity of
employing adjustable knives.
G. F. REDFERN,
4, South Street, Finsbury, London,
Agent for the Applicant.

page_text: or Cutters therefor.
I, FRANK KNIGHt Woodroffe, of Rugeley, in the county of Stafford, Mechanical
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 improvements in machines or apparatus for slicing, cutting,
and pulping turnips and other roots and vegetables, the object of the improvements
being to simplify the construction of such machines and to improve their action.
In carrying out my invention I employ a fixed combined cutting and pulping
knife the said knives being of such a construction as to dispense with the necessity of
adjustment as has hitherto been necessary.
My improved knives are mounted upon a dise barrel or wheel the knife being so
bent or dished that the cutting edge thereof is at such a distance from the surface of
the disc or barrel as to give the required thickness of slice and also to give sufficient
clearance for the pulping. This arrangement enables me to dispense with the necessity
of employing adjustable knives.
In order to enable my invention to be fully understood I will describe the same by
reference to the accompanying drawing in which figure 1 represents a face view of a
disc or knife wheel for root pulpers and slicers fitted with knives or cutters constructed
according to my invention; figure 2 is a section on line G H of figure 1; figure 3 is
a detached face view of one of my combined cutting and pulping knives; figure 4 is
an edge view of figure 3; and figure 5 is a section on line K N of figure 3. Similar
letters in all the figures represent similar parts.
C is the disc or knife wheel, and B B are the pulping or cutting knives which are
mounted on the face thereof; A and A', are my improved knives which combine a
pulping or cutting knife edge P P, and a slicing knife edge S S', in one and the
same knife.
Figure 4 shews an edge view of the pulping edge P of the knife.
:
The edges P P of the knives A A', when the knives are mounted on the disc Cas
shewn in figure 1 are in the same plane as the edges of the knives B B₁; the slicing
edges S S¹, are raised above this plane and away from the face of the disc, as shewn in
figure 2, a distance equal to the thickness of the slices required to be cut. It will be
obvious that if the knives A A' were straight or flat the edges S S¹, being raised from
the surface of the disc C described as above and the knives themselves being at an
angle to the face of the disc, the edges P P, could not properly pulp or cut turnips or
such like roots, as the roots would be forced off the knives through the backs of the
knives being higher than the front or cutting edges. In order then that the edges P P¹
shall pulp or cut efficiently I bend, dish or hollow the knives A A' as shown in the
section of the same at figure 3.

page_text: The knives A A' are attached to the disc C in any suitable manner such as by bolts
or pins.
To make use of my improved knives in a root pulping or slicing inachine, when
requiring to pulp or cut, the disc C is revolved in one direction, and for slicing the
motion is reversed, no adjustment of the knives being necessary to allow either of these
operations to be performed, the hereinbefore described construction and attachment of
the knives A A dispensing with the necessity of adjustment.
I do not confine myself to the particular form of pulping or cutting edge Pas
shewn in figure 4, nor to the number of knives described and shewn in figure 1, nor
to the method of mounting or attaching of same, nor to a plain disc or knife wheel as
my knives can with equal efficiency be mounted on a conical disc or on the periphery
of a barrel as will be well understood.
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 :-
:-
1. A knife or cutter for root pulpers and slicers having both a pulping or cutting
edge and a slicing edge substantially as described and shewn, the said knife being so
constructed as to require no adjustment.
2. A root pulper and slicer provided with knives constructed and operating
substantially in the manner and for the purposes hereinbefore described and illustrated
in the accompanying drawing.
G. F. REDFERN,
4, South Street, Finsbury, London,
Agent for the Applicant.