Improvements in Machines for Mincing and Chopping Meat.
Year: 1893

page_text: Date of Application, 19th Sept., 1893
Complete Specification Left, 28th May, 1894-Accepted, 30th June, 1894
PROVISIONAL SPECIFICATION.
Improvements in Machines for Mincing and Chopping Meat.
We, JONATHAN BARNES, RICHARD WALTON KENYON, and WILLIAM
HENRY KENYON, all of Ewbank Works, Accrington, in the County of Lancaster,
Machinists, and JAMES LIGHTFOOT SHORROCK, of Hollins Lane, Accrington,
aforesaid, Mechanic, do hereby declare the nature of this invention to be as
follows:-
--
This invention relates to improvements in that class of mincing machine in which
after the meat is fed forward by a screw it is severed into small pieces and minced
first by a series of one or more revolving and stationary knives and then by being
passed through a perforated plate the meat after it enters the perforations being cut
off by a revolving knife acting against the side of the plate.
It is designed to ensure the more accurate fitting of the stationary knives and the
perforated cutting plate and to render the cutting and mincing of the meat more
efficient.
It consists essentially in forming the cylindrical casing with an annular recess or
chamber at its outer end of larger diameter than the other part in which the screw
rotates and in forming the stationary and rotating blades which are fitted therein
of larger diameter or radius than the screw the inner rotating blade fitting against
a shoulder to prevent any of the meat passing the end uncut and in forming special
grooves or slots of such a shape in the cylindrical casing and the ends of the
stationary knives and the edges of the perforated plate of corresponding shape to
fit therein so that they can only be placed in position with the cutting face in the
right direction.
In carrying out the invention the cylindrical casing at the end into which both
the stationary and rotating cutting knives and the perforated plate fit is constructed
of somewhat larger diameter than that part in which the forcing screw rotates and
the knives both stationary and rotating are also constructed of greater diameter
than the screw. This recess or chamber at the end of the cylindrical casing is
formed with an abrupt shoulder between it and the other part of the casing and
gainst this shoulder the ends of the first rotating blade bear. By this arrangement
uy meat is prevented being carried or forced forward past the ends of the knives
uncut before reaching the perforated plate.
To ensure the more accurate and easy fitting of the knives and plate into position
with the cutting face in the one direction in this end of the casing there is formed
an inclined or wedge shaped groove or slot preferably with an abrupt shoulder or
face at one edge or of other uneven or irregular shape. The edge of the perforated
plate is provided with one or more projections or lugs of corresponding shape and
the ends of the knives with a bevel or incline corresponding with the groove so that
they can be placed in position with the cutting face in one direction but cannot be
titted in when turned or reversed in the opposite direction.
This arrangement for securing the perforated plate and stationary knives may
also be applied without altering the size or formation of the end of the casing.
Dated this 18th day of September 1893.
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.

page_text: Improvements in Machines for Mincing and Chopping Meat.
We, JONATHAN BARNES, RICHARD WALTON KENYON, and WILLIAM
HENRY KENYON, all of Ewbank Works, Accrington in the County of Lancaster,
Machinists, and JAMES LIGHTFOOT SHORROCK, of Hollins Lane, Accrington,
aforesaid, Mechanic, 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 that class of mincing machine in which
after the meat is fed forward by a screw it is severed into small pieces and minced
first by a series of one or more revolving and stationary knives and then by being
passed through a perforated plate the meat after it enters the perforations being
cut off by a revolving knife acting against the face of the plate.
It is designed to ensure the more accurate fitting of the stationary knife and
perforated cutting plate and to render the cutting and mincing of the meat more
efficient.
It consists essentially in forming the cylindrical casing with an annular recess or
chamber at its delivery end of larger diameter than the portion of the barrel in
which the screw rotates and in forming the stationary and rotating knives which are
fitted therein of larger diameter or radius than the screw the inner rotating knife
fitting near to or against a shoulder thereby formed to prevent any of the meat
passing the end uncut and in forming grooves or slots of special shape in the delivery
end of the casing and the ends of the stationary knife and the edges of the perforated
plate of corresponding shape to fit therein, so that the stationary knife and
perforated plate can only be placed in position with the cutting faces in the right
direction.
It will be fully described with reference to the accompanying drawings:
Fig. 1. Longitudinal section through the machine.
Fig. 2. End elevation with perforated plate removed.
Fig. 3. Transverse section on line .-.
Fig. 4. Transverse section on line y-y.
Fig. 5. Elevation of perforated plate.
Fig. 6. Front and side elevation of knife, which works against the perforated
plate.
Fig. 7. Front and side elevation of similar knife with three blades.
Fig. 8. Front and side elevation of similar knife with four blades.
Fig. 9. Front and side elevation of stationary blade or knife.
Fig. 10. Front and side elevation of stationary knife with four blades.
Fig. 11. End elevation of screw with rotating knife affixed thereto.
Fig. 12. Elevation of similar knife with three blades.
We construct the casing A at the delivery end a where the perforated plate and
cutting kuives are placed of a somewhat larger diameter than the part or barrel &
in which the forcing screw B rotates and we also construct the rotating cutting
knives C and D the stationary knife E and the perforated plate F of greater
diameter than the screw B and than the part 6 of the casing in which the screw
rotates.
The recess or chamber a at the delivery end of the cylindrical casing A is formed
with an abrupt shoulder a' between it and the other part 6 of the casing and near to
or against this shoulder the ends of the blades of the first rotating knife C work o
rotate. This construction or arrangement prevents any meat being carried or forced
forward past the ends of the knives uncut against the perforated plate.
The rotating knife may be placed either close to the shoulder a or somewhat
removed from it the advantage in cutting being obtained by it being of greate

page_text: diameter than the screw B and that part b of the barrel in which the screw
rotates.
To ensure the more accurate and easy fitting of the knives and plate into position
with their cutting edges or faces always in the same direction there is formed in the
end a of the casing A an inclined or wedge shaped groove or slot c preferably
with an abrupt shoulder or face at one edge or of other uneven or irregular shape.
The edge of the perforated plate is provided with one or more projections or lugs f
of corresponding shape and the ends of the knife E with a bevel or incline e
corresponding with the groove so that they can be placed in position with the
cutting edge or face in one direction but cannot be fitted in when turned or
reversed in the opposite direction.
This arrangement for securing the perforated plate and the stationary knife may
also be applied without altering the size or formation of the delivery end of the
casing.
The knife is preferably pinned to or otherwise affixed to the screw B and the
kuife. D which rotates against the face of the perforated plate is carried on a spindle
or pin b' at the end of the screw. This spindle or piu is also of such a shape
that the knife must always be placed upon it with the cutting edges against the
face of the perforated plate F.
The knives may be made with two, three or four blades as found desirable and
the perforated plates are made with perforations of various sizes.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. A machine for mincing and chopping meat the cylindrical casing of which is
constructed at its delivery end with an annular recess or chamber greater in
diameter than the portion of the barrel in which the screw rotates and provided
with cutting knives therein the diameter of whose blades is greater than the
diameter of the forcing screw, substantially as and for the purposes described.
2. In a machine for mincing and chopping meat the casing or barrel provided
with an inclined or wedge shaped slot or groove in combination with corre-
spondingly shaped lugs on the perforated plate and inclined ends e on the stationary
knife so formed that the plate or knife can only be placed in the machine with the
face or cutting edge presented in the required direction.
Dated this 26th day of May 1894.
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.