AN IMPROVED GRATER FOR HOUSEHOLD USE
Year: 1884

page_text: DEVICATION,
I EDWARD KENWORTHY DUTTON of 41 John Dalton Street Manchester in the
County of Lancaster Consulting Engineer and Patent Agent do hereby declare
the nature of the said Invention for "AN IMPROVED GRATER FOR HOUSEHOLD
USE (a communication to me from abroad by Alexander Obermeyer of Barmen-
Rittershausen Rhenish Prussia in the Empire of Germany, Manufacturer) to be as
follows:-
"
The improved grater constituting my invention consists of a hollow case within
which is a revolvable perforated roughened disc which performs the grating
operation. The case is provided with an inlet aperture or hopper through which
the material to be grated is introduced. The grating disc is conical or curved in
form and the surrounding wall of the case is made gradually to approach the disc
until they nearly touch each other. The said disc is secured to a shaft which is
carried in a bearing formed in a bracket which supports the hollow case and which
is secured to a table or other suitable point of attachment by a scrow or other
gripping means. The shaft and disc are turned by a handle the said handle being
secured to the shaft by a pin or tooth carried on the end of a spring and entering
a counter sink in the shaft. The said pin or tooth can be readily raised out of
contact with the shaft so as to allow the shaft and disc to be removed from the
case when it is desired to clean or clear the apparatus: This withdrawal of the
disc is effected through a circular opening in the case opposite to the disc the
grated material being also removed through this opening. When operating my
improved apparatus the materials to be grated are introduced through the hopper
and the grating disc is rotated by means of the handle. As the portions of the
material become less in bulk they are carried round by the rotation of the disc
through the gradually decreasing space towards the point where the wall of the
case nearly meets the grating surface of the disc and by this means the smallest
particles of the material are subjected to the grating operation. The grating disc
is preferably made to be readily detachable from the shaft so that discs of greater
or less degrees of fineness may be used as desired.
A
·
ALL

page_text: COMPLETE SPECIFICATION.
"
I EDWARD KENWORTHY DUTTON of 41 John Dalton Street Manchester in the
County of Lancaster Consulting Engineer and Patent Agent do hereby declare the
nature of the said Invention for "AN IMPROVED GRATER FOR HOUSEHOLD USE
(a communication to me from abroad by Alexander Obermeyer of Barmen-
Rittershausen Rhenish Prussia in the Empiro of Germany, Manufacturer) and in
what manner the same is to be performed to be particularly described and
ascertained in and by the following statement and accompanying drawings:-
:-
The improved grater constituting my invention consists of a hollow case within
which is a revolvable, perforated, roughened disc which performs the grating
operation.
And in order that the said invention may be properly understood I will now
proceed more particularly to describe the same reference being had to the
accompanying two sheets of illustrative drawings and to the letters and figures
marked thereon, that is to say-Fig: 1 on sheet 1 of the said drawings is a
vertical section at the line A. B. Fig: 2 the latter Fig: being an elevation at the
delivery end of the improved grater. Fig: 3 is a horizontal section of the grater
at the line C. D. Fig: 2 and Fig: 4 is a plan. In the latter two figures the
driving handle is removed. The apparatus consists as shown in the drawings of a
case g. which is of a snail-shell form and which contains a conical grating disc r.
The case g. is supported upon a standard t. and the disc r. is carried by a ruff i. on
the shaft o. which is supported in bearings formed in the case g. and is turned by
means of a handle k. The case g. has a circular opening c. in front which is
divided from the interior of the case by the revolvable disc r. The said disc and
the wall of the case g. enclose a space which increases towards the feed opening or
hopper f. but becomes narrower in the direction of the arrow p. and finally dies
away at the line a. b. Figs: 2 and 4 at which point the disc r. and the wall of the
case almost touch. In operating the invention the materials to be grated are
introduced through the hopper and the grating disc r. is rotated in the direction
of the arrow by means of the handle k. As the grating operation proceeds the
portions of material in the case become less in bulk and are carried round by the
rotation of the disc through the gradually decreasing space towards the point a. b.
where the space ceases to exist and by this means the smallest particles of the
material are subjected to the grating operation. As nearly the whole of the
grating surface of the disc is in contact with the material the operation is effected
with despatch and economy. The perforations or roughness on the grating disc
may be made by punching or pressing. Should it be desired to remove the disc
for cleansing or clearing purposes, or for the substitution of a disc of a finer or
coarser description it is only necessary to remove the handle k. and withdraw the
disc through the opening c. Any suitable means may be adopted to secure the
handle to the shaft in such a manner as that it can be readily detached for example
a tapered pin or spring catch or tooth might be employed but a method which
I consider to be preferable is shown at Fig: 1 Sheet 1 and Figs: 1 and 15 sheet 2
of the drawings. Referring to theso Figs: a catch h. is pivotted on the handle k.

page_text: so as to be capable of being pushed into the recess c. in the shaft o. as shown in
full lines at Fig: 1° or turned back so as to clear the same as shown in dotted lines.
When the catch is thus pulled back the handle k. can readily be removed from the
square neck on the shaft o. but when the catch is pushed home into the recess e.
the handle is prevented from leaving the shaft. The complete apparatus is
fastened as shown to a table or other point of attachment by means of a screw 8.
which passes through a boss on the clamping arm or bracket u. The discs used in
conjunction with the hereinbefore described apparatus vary according to the
materials which it is proposed to treat. For example the disc shown in sheet 1. of
the drawings might be applicable in the treatment of stale bread or similar friable
material, but for reducing vegetables whether raw or cooked it is sometimes
necessary to adopt discs having particular grating or reducing surfaces. The disc
shown in Figs 1 and 2 in sheet 2 of the drawings is provided in addition to the
stamped out teeth Z. with plain holes m. which more readily allow the grated or
reduced material to pass through the disc r. Where it is desired to cut the material
or vegetable into thin slices of a regular and stated size I use a disc having
stamped perforations of the form shown at n in Fig: 3 sheet 2. and to an enlarged
scale at Fig: 3. In Fig: 4 similar perforations n¹ but set to a different angle are
arranged spirally upon the disc. Fig: 5 shows a series of cutting or abrading
ridges, teeth or perforations y. stamped or pressed out of the disc and arranged
thereon in a spiral form. Fig: 5" is an enlarged view of the stamped out cutting
or abrading edge v. of the spiral ridge y. It will be observed that the disc shown
at Fig: 5 sheet 2 is rounded instead of being conical but I wish it to be understood
that any or all of the grating, cutting or reducing discs hereinbefore described and
shown may be either conical, rounded or flat.
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. The arrangement and combination of parts forming a grating or reducing
apparatus consisting mainly of a snail-shell formed case, with a feed hopper,
delivery opening and revolvable grating or reducing disc driven from a handle all
substantially as herein before described and shown.
2. The method of securing the handle to the shaft of the grating disc.
3. The various forms of grating, reducing or cutting discs for the purposes, and
substantially as described and shown.
•
"
TI