Improvements in Mincing or Chopping Machines.
Year: 1892

page_text: Date of Application, 18th May, 1892-Accepted, 18th June, 1892
COMPLETE SPECIFICATION.
Improvements in Mincing or Chopping Machines.
I, ARNOLD SCHEITHAUER, of 26 Schutzendorferstrasse, Berlin, in the German
Empire, 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 :-
This invention relates to such mincing machines, in which the material to be
disintegrated for instance meat, is fed along in a casing by means of a worm or
spiral, and pressed through a perforated disc, a knife (generally cross shaped, and
taking part in the movement of the worm) sliding round the inner surface of the
perforated disc and cutting off the meat pressed into the holes of the perforated
disc by the worm.
These machines have the disadvantage that the feeding of the meat and the
consequent pressing of the same against the perforated plate is not effected evenly
at all parts. In consequence of this the perforated disc held by a screwed cap
becomes soon loosened by the giving way of the latter whereby the disc gets into
an oblique position and is no longer touched at all points by the blades of the cross
shaped knife. The result is that particles of meat get between the blades, and the
perforated disc whereby the regular working of the machine is affected and the
blades are sometimes broken or damaged.
The object of this invention is an arrangement by means of which the cross
shaped knife is always pressed evenly against the perforated disc whether the
perforated disc has more or less play in consequence of which it gets into an oblique
position, now to one side, now to the other.
This arrangement consists in the boss of the cross shaped knife being ball shaped
at the end towards the worm. This ball shaped end fits into a corresponding recess
or socket of the worm arranged around the round pin of the latter on which the
cross-shaped knife and the perforated discs are arranged in such a manner as will
allow a certain amount of play.
Another object of this invention is the device by means of which the perforated
disc is kept in position. This is designed so that it may be removed and easily
cleansed, after the casing which is formed in halves, has been opened.
In order that my invention may be the better understood I now proceed to describe
the same reference being had to the accompanying drawings, and to the letters
and figures marked thereon. Like letters refer to like parts throughout the
figures.
Figure 1 is a vertical section through the machine the interior parts being shown
in side elevation.
Figure 2 is a plan of the exit of the lower half of the casing, perforated disc and
holding device, the upper part of the casing as well as the worm and cross-shaped
knife are omitted.
Figure 3 is a vertical section through the cross shaped knife and the adjacent
part of the worm.
Figure 4 shows two views of the knife.
Figure 5 shows two views of the perforated disc and
Figure 6 shows one view of the screwed closing device.
As shown in Figures 3 and 4, the boss a' of the cross shaped knife a is ball shaped
at its free end, while the worm b has a corresponding recess 60 around the pin b'.
By this means when the knife a (after having been placed on the pin, so as to have
a little play thereon and been pushed against the worm) can assume to a certain
degree an oblique position as regards the axis of the worm. The knife a receives
the necessary rotary movement by the pin 3 arranged on the end of the worm which
projects towards the cross-shaped knife a'and acts against an arm of the latter.

page_text: Beside the knife a there is arranged on the pin 6' the perforated disc c, provided
at its circumference with a projection c¹ which engages with a recess d', Figure 2,
of the casing d and serves to prevent any rotary movement of the perforated
disc c.
The casing is divided in the direction of the horizontal plane indicated by the
line, Figure 1, the upper part being arranged to open backwards on a hinge or
pivot parallel to the liner.. The line dividing the casing passes through the
recess d provided for the projection c', so that the worm or spiral b with the cross
shaped knife a and perforated disc c can be easily lifted out of the lower part of the
casing after the latter has been opened.
While in machines of the old type, the nut required for the fixing of the perforated
disc was screwed to the screw threaded end of the casing from the outside, in this
machine the perforated disc c is held in position by a screwing device which can be
easily removed from the casing after the latter has been opened.
This screwing device consists of a ring e provided with an inner screw thread,
and a hollow piece f, having an exterior screw thread and screwed into the ring e.
This piece has at its outer end (shown in Figures 1 and 2 at the right hand side)
a flange f grooved or milled at the periphery, see Figure 6, which serves to turn it
when screwing it in.
Like the perforated disc c, the ring e is provided with a projection e' which
also engages with the recess d' of the casing d, thus preventing a rotation of the
ring e.
The holding device ef has the position on the machine as shown in Figures 1
and 2, the flange f¹ of the hollow piece is outside the casing so that it may be easily
gripped with the hand.
After the machine has been put together the hollow piece f is screwed into the
ring e so far that the inner flat end of fabuts against the perforated disc c and
presses the latter with sufficient force against the cross shaped knife a.
If now during the operation of the machine the hollow piece f is unscrewed to
some extent from the ring e automatically, and the perforated disc c becomes loose,
the blades of the cross shaped knife a remain nevertheless in contact with the inner
face of the perforated disc c, because the pressure of the meat fed forward by the
worm compels the knife a to incline on its ball joint as much as is necessary to keep
the blades at all points in touch with the perforated disc c.
As before mentioned this machine may also be used for mincing substances other
than meat.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1st. A mincing or chopping machine in which close contact between the knives
or cutting disc a and the counter plate c is ensured at any position the latter may
assume, by the ball shaped boss a' of the knife a fitting into and working a corre-
sponding recess or socket 6° of the worm or spiral b which feeds the meat or other
substance, substantially as described and illustrated.
2nd. A mincing or chopping machine of the class mentioned in Claim 1 in which
the female screw thread of the device ef for holding the perforated counter disc c
in position is cut into a separate nut e instead of into the casing itself, so that the
holding device ef may be removed for cleansing or otherwise after the divided
casing has been opened, substantially as described and illustrated.
3rd. A mincing and chopping machine, substantially as described and illustrated.
ليمي
1000
FELL & WILDING,
1, Queen Victoria Street, London, E.C., Agents for the Applicant.