Improvements in Apparatus Applicable for Mincing or Finely Cutting Meat.
Year: 1887

page_text: Date of Application, 13th Sept., 1887
Complete Specification Left, 13th June, 1888
Complete Specification Accepted, 13th Sept., 1888
Improvements in Apparatus Applicable for Mincing or Finely
Cutting Meat.
A communication from abroad by THE AMERICAN MACHINE COMPANY, of Philadelphia,
in the State of Pennsylvania, United States of America.
I, JOHN CALVIN PLIMPTON of 65 Victoria Street, Liverpool, in the County of
Lancaster, Merchant, do hereby declare the nature of this invention to be as follows:-
This invention relates generally to that particular class of machines employed for
mincing or cutting up meat or other yielding substances, which comprehend in
connection with many minor details of construction, a cylindrical casing, a rotatable
feed shaft contained therein, a fixed conical shell, and a knife adapted to be rotated
against the face of and to have a shearing action in connection with said conical
shell.
The invention relates particularly to the rotatable knife and the mode of mounting
the same, and its object is to so construct the said knife that its rings or frame will be
adapted to take the wear which would otherwise be borne by the blade edges, and to
so mount the said knife within the machine, that, while it will constantly rotate while
the machine is in operation it is not constantly in position to bear closely against the
conical shell, its contact with the conical shell, and consequently its shearing action in
connection therewith, being induced and governed by the pressure thereon of the
material to be operated upon-a further object being to provide a stop to limit the
outward movement of the knife and prevent it from being so closely pressed against
the conical shell as to retard the operation of the machine.
In its most finished form the apparatus is described as follows:-
The casing of the machine is made up of two parts, the main body and the
perforated cone. The former has an inlet through a hopper near one end of the
casing. A series of cutting ribs extend from end to end upon the inner curved
wall of the body. In the end wall of the body a bearing is formed which supports
the shaft upon which a feed screw running the whole length of the body is
supported.

page_text: The casing as a whole resembles two truncated cones joined at their bases, the
longer cone (and the inclination of its wall is very slight) being the body above
described, and the shorter one consisting of the perforated cone, the two parts being
preferably secured together by means of a binding ring screwed onto the body and
having a flange overlapping the external flange of the perforated cone. Any other
well known means or method may be employed to fix the two together the perforated
cone is preferably made conical to facilitate the adjusting of the knives. The outer
end of the perforated cone has preferably an opening through which the end of the
feed screw shaft protrudes, although the machine will work quite as well if the outer
end of the perforated cone is closed and the cylindric extremity of the screw shaft is
cut off.
Instead of making the inner face of the cone of a taper from end to end, corre-
sponding to the taper of the knife-frame, the smaller end is sometimes enlarged, so
that it is of a greater diameter than the smaller end of the knife-frame, thereby
preventing the formation of a shoulder on the inside of the cone by wear.
The feed screw conforms in general outline to the frusto-conical interior part of the
body of the casing, one end of which screw has a shoulder which prevents the
movement of the feed screw towards the hopper-A spiral thread the edges of which
are sharpened, on the shaft, constitutes the feed screw-That section or portion of the
several spiral ribs which is acted on by the feed screw immediately before the screw
reaches the fixed longitudinal knife at the bottom of the case, is made preferably of a
much less inclination or pitch than the pitch of the ribs for the remainder of their
length. The meat as it passes through the hopper is caught upon the feed-screw and
pressed against the ribs on the inside of the case.
In the main it is first pressed against the portion of the ribs having the lesser pitch,
and at practically the same time it is carried against the longitudinal knife for cutting
it into shorter pieces-By making this portion of the ribs with only a slight pitch the
neat is not crowded along very fast, until plenty of time has been given for the feed
screw and knife to act; but so soon as they have acted to cut off pieces of the meat,
the meat thus freed is forced against the more inclined portion of the ribs and fed
faster through the case.
The ribs also are made to project from a surface which, in the longitudinal direction
of the machine, is substantially straight from rib to rib and parallel with a line
running across the tops of the ribs, while the ribs themselves have the side which
faces the discharge end of the machine at right angles to the length of the case, or
standing over toward that end at a little more than a right angle. This causes them
to take a better hold on the meat, so that a shorter case will feed as rapidly as a long
one in which this face of the ribs slants the other way.
The perforated cone is a conical shell, perforated with delivery holes, the edges of
which form cutters which are opposed to the knives in the cutting of the material by
the rotation of the knives, and it is bound to the perforated cone by means of the
binding ring before mentioned which, screwing upon the exterior of the large or
delivery end of the body of the casing, has a flange or lip which overhangs a flange
on the perforated cone, and holds the said perforated cone or conical shell tightly in
place against the body—The flange of the perforated cone is provided with a notch, and
when the perforated cone and body of the casing are brought together the notch on
the perforated cone fits upon a stud formed upon the end of the body, and rotation of
the perforated cone is prevented.
The knives are connected to rings making them as a whole in the form of and
attachable and detachable knife frame or composite cutter. In order to make this
composite cutter or knife frame rotate with the feed screw, lugs are formed which
engage notches in the screw and head, the knife frame being fitted somewhat
loosely thereon, so that it may move a little to or form the centre of the shaft
and adjust itself to the inside of the perforated cone. The smaller ring of the
knife frame can bear against a shoulder on the shaft at the outer end of the head,
so as to hold the knives against an endwise movement away from the inner face
of the perforated cone.

page_text: The larger ring of the knife frame is chamfered on the inside to a thin edge,
so that it does not obstruct the passage of the meat from the feed-screw groove
to the cam groove in the head. It is not necessary to chamfer this ring all the
way around for this purpose; but, it is just as well to do so.
The ring at the small end of the knife frame can be made large enough to slip over
the adjustable collar on the end of the feed screw shaft, and can also be slotted to pass
the head of the set screw, which holds said collar on the shaft. Said screw and slot
also serve as an index to indicate the proper position of the knife frame in putting it
in place. The set screw has its end bearing against a flat seat on the shaft, and by
setting the collar in proper position the outer end of the cone part will bear against
said collar, so that the set screw which secures the perforated cone will not draw the
cone shell too closely against the knives. By this means the proper cutting contact
may be regulated. This is quite important, as it prevents undue pressure of the
knives & cone, so that they will not heat, even when the machine is run rapidly by
power. Furthermore, it removes in a great measure, the wear of the knives on the
inner face of the cone.
The rotatable knife is adapted to be placed within the perforated cone and to
operate in connection therewith. A slightly varying form of a knife which is very
good in practice has a ring at the large end of the knife, and a disk hub at the small
end of the knife, four knife blades being preferably formed with or mounted upon
these parts. The ring at the large end is sufficiently larger than the disk hub to
render the inclination of the knife blades connected to them correspondent to the
inclination of the perforated cone. The knife blades themselves are preferably formed
slightly curved in cross section.
The peripheries of the ring at the large end, and the disk hub, are formed or
bevelled so that they have an angular edge inclination coincident, and are flush or on
the same plane with the knife blade edges, and the said parts therefore coincide with
the lines of the frustum of a cone, outlined by the knife blade edges. This con-
struction allows the knife blades to approach in operation very closely to the inner
surface of the conical shell, while the parts, ring and disk hub, being subject to the
same frictional contact with the interior conical shell of the perforated cone, as are the
blade edges themselves, serve, when the knife is pressed into frictional contact with
the conical shell, to take the wear otherwise coming on the blade edges.
Upon the shaft, and just within the bearing formed for it in the end of the
perforated cone, is conveniently, but not necessarily formed a square or polygonal
seat. The disk-bub of the knife has a central orifice of outline correspondent to this
seat, which adapts the knife to be seated thereon, and to rotate therewith. The length
of the seat is in excess of the thickness of the disk-hub, and this is necessary as is
hereinafter more fully described, to allow the knife the freedom of longitudinal
movement essential in carrying out the invention.
"
The knife as a whole is slightly less in length than the space allotted for it in the
conical shell, and this also to allow of the necessary movement of the knife.
Upon the inner face of the small end of the conical shell or perforated cone
"and
surrounding the bearing therein, is conveniently formed an annular rib, which may,
indeed, be the inner face itself of said end, against which the disk-hub bears or abuts
when it arrives at the outer limit of its movement, and when its exterior is in working
contact with the interior of the shell.
That end of the shaft which passes through the end wall of the body is squared,
for the convenient application of a crank handle, or other device for imparting rotation
to the shaft.
The body can be supported on a short column, or stand, that can be fixed to a table,
or can be fitted in the following manner.
At one end of the body at its under side, an arm or bracket is formed, having
vertical ribs and the lower corner, a flange. The space between said flange and
bracket is in the nature of a peripheral groove or socket extending part way around
The bracket is also perforated for the reception of a bolt or screw.
The standard has vertical grooves in one side to fit the ribs of the bracket, while its
the case.

page_text: upper end is fitted to the peripheral groove or socket in the underside of the case.
The standard is also provided with a screw or bolt hole which registers with that in
the bracket. The lower end of the standard may be provided with any ordinary
means for securing it to a bench or table: but preferably with a clamp frame and
clamp mechanism or screw of any ordinary construction for securing it to the edge of
a suitable supporting table or shelf. By this construction of the attachable and
detachable standard, the case is properly elevated for convenient use, and, after use it
can readily be detached from the standard, so that the case may be less bulky to
handle for cleaning and more compact to store away. When wanted for use, the case
can readily be attached to the standard.
The operation of the device will be readily understood: Assume the machine
stationary and empty, and the rotatable knife moved back on its seat so that its blades
are not in close contact with the conical shell. Rotation being imparted to the shaft
by the operation of the handle, material fed to the hopper is carried forward by the
screw toward the delivery end of the machine. In its passage thither it is through
the conjoint shear-like action of the sharp cutting ribs within the body and the thread
on the shaft, to a large extent, divided. Reaching the outer end of the body, the
material is delivered into the conical shell and within and behind the blades of the
rotating knife. Continued delivery of material into the conical shell will soon fill it,
and the pressure of the material against the disk-hub and the blades of the rotating
knife will push the knife outwardly on its seat and force its blade edges into close
contact with the inner face of the conical shell, when it will be in position to begin
and continue its function of shearing off from the main body of the substance acted
upon all such parts as are pressed between the blades, and into the orifices of the
conical shell. The knife will thus be held in shearing contact with the conical shell
as long as material is fed into the machine. Upon cessation of the supply of material
to be acted upon, the knife, although of course continuing to rotate as long as the
machine is operated, will no longer be held tightly against the conical shell. The
annular rib, or the end of the perforated cone described, serves to prevent any binding
of the knife when unusual pressure is put upon it.
The length of the longitudinal play of the knife itself, is limited by the size of the
conical shell (perforated cone) and the amount of space left therein for such play and
such length is a matter which is to be pre-determined and regulated by the character
of the material to be operated upon.
As is obvious, knives mounted in the manner described, the edges of which are
prevented, by the end rings and the rib at the end of the cone, from grinding against
the edges of the perforations opposed to them, during the operation, will last much
longer than when constructed and mounted in a different manner and adjustable by
means of screw rings or other devices forcing them against a perforated plate, and
not self adjustable.
It is obvious that the feature of taking the wear off of the rotatable knife blade
edges, as described above, is capable of application with meat cutting machines in
general, and not confined to machines of the construction described.
Many obvious modifications in mechanical construction, may be resorted to in
carrying out this invention. Thus, instead of the hub, and hub seat described, the
hub-disk may be simply feathered upon the shaft; and instead of the rib at the end
of the cone being formed upon the conical shell it would answer the same purpose, if
formed upon the hub-disk.
Dated thi. Tulful 1. a
L1007

page_text: A communication from abroad by THE AMERICAN MACHINE COMPANY, of Philadelphia,
in the State of Pennsylvania, United States of America.
I, JOHN CALVIN PLIMPTON of 65 Victoria Street, Liverpool, in the County of
Lancaster, Merchant, 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 generally to that particular class of machines employed for
mincing or cutting up meat, or other yielding substances, which comprehend in
connection with many minor details of construction, a cylindrical casing, a rotatable
feed shaft contained therein, a fixed conical shell, and a knife, adapted to be rotated
against the face of, and to have a shearing action in connection with said conical
shell.
The invention relates particularly to the rotatable knife and the mode of mounting
the same, and its object is to so construct the said knife that its rings or frame will
be adapted to take the wear which would otherwise be borne by the blade edges, and
to so mount the said knife within the machine, that, while it will constantly rotate
while the machine is in operation it is not constantly in position to bear closely against
the conical shell, its contact with the conical shell, and consequently its shearing action
in connection therewith, being induced and governed by the pressure thereon of the
material to be operated upon, a further object being to provide a stop to limit the
outward movement of the knife and prevent it from being so closely pressed against
the conical shell as to retard the operation of the machine.
In its most finished form the apparatus is depicted in the accompanying drawings,
in which
Figure 1 is a side elevation of the machine.
Figure 2 a horizontal section on line x
Figure 1.
Figure 3 a vertical section thereof, partly in elevation.
Figure 4 a vertical section of the main portion of the case.
Figure 5 a perspective view of the rotary knives and their supporting frame.
Figure 6 central section of the conical shell, showing a modification.
The casing of the machine is made up of two parts, the main body A and the per-
forated cone B. The former has an inlet through a hopper a near one end of the
casing. A series of cutting ribs C C extend from end to end upon the inner curved
wall of the body. In the end wall of the body a bearing a¹ is formed which supports
the shaft D upon which a feed screw D¹ running the whole length of the body is
supported.
The casing as a whole resembles two truncated cones joined at their bases, the
longer cone (and the inclination of its wall is very slight) being the part A above
described, and the shorter one consisting of the part B, the two parts being preferably
secured together by means of a binding ring E, although any other well known means
or method may be employed. The part B is preferably made conical to facilitate the
adjusting of the knives. The outer end of the part B has preferably an opening

page_text: through which the end of the feed screw shaft D protrudes although the machine
will work quite as well if the outer end of the part B is closed and the cylindrical
extremity of the screw-shaft is cut off.
Instead of making the inner face of the cone of a taper from end to end, corre-
sponding to the taper of the knife frame, the smaller end is enlarged, so that it is of
a greater diameter than the smaller end of the knife frame, as shown in Figure 3,
thereby preventing the formation of a shoulder on the inside of the cone by wear.
The feed screw D¹ conforms in general outline to the frusto-conical interior part A
of the casing, one end of which screw has a shoulder d which prevents the movement
of the feed screw toward the hopper. A spiral thread the edges of which are
sharpened on the shaft D constitutes the feed screw.
That section or portion of the several spiral ribs C which is acted on by the feed
screw immediately before the screw reaches the fixed longitudinal knife C¹ at the
bottom of the case is of a much less inclination or pitch than the pitch of the ribs for
the remainder of their length. The meat as it passes through the hopper is caught
upon the feed screw and pressed against the ribs on the inside of the case. In the
main it is first pressed against the portion of the ribs having the lesser pitch, and at
practically the same time it is carried against the longitudinal knife for cutting it into
shorter pieces. By making this portion of the ribs with only a slight pitch the meat
is not crowded along very fast until plenty of time has been given for the feed screw
and knife C¹ to act, but so soon as they have acted to cut off pieces of the meat, the
meat thus freed is forced against the more inclined portion of the ribs and fed
faster through the case.
The second of the improvements in the feed resides in making the ribs project from
a surface which, in the longitudinal direction of the machine, is substantially straight
from rib to rib and parallel with a line running across the tops of the ribs, while the
ribs themselves have the side which faces the discharge end of the machine at right
angles to the length of the case, or standing over toward that end at a little more than
a right angle as shown in Fig. 4. This causes them to take a better hold on the
meat, so that a shorter case will feed as rapidly as a long one in which this face of
the rib slants the other way.
The part B is a conical shell perforated with delivery holes b the edges of which
form cutters which are opposed to the knives F in the cutting of the material by the
rotation of the knives, and it is bound to the part A by means of the binding ring E,
which, screwing upon the exterior of the large or delivery end of the part A, has a
flange or lip e which overhangs a flange 6' on the part B and holds the said conical
shell tightly in place against the part A. The flange b¹ of the conical shell is pro-
vided with a notch 6 and when the parts B and A are brought together the notch 6ª
on the part B fits upon a stud a³ formed upon the end of the part A, and rotation of
the conical shell is prevented.
The knives F are connected to rings F', making them as a whole in the form of an
attachable knife frame or composite cutter. In order to make this composite cutter
or knife frame rotate with the feed screw, lugs ff are formed which engage notches
in the screw D¹ and head D* (see Figures 3 and 5) the knife frame being fitted
somewhat loosely thereon, so that it may move a little to or from the centre of the
shaft and adjust itself to the inside of the cone. The smaller ring of the knife frame
bears against a shoulder d¹ on the shaft D at the outer end of the head D³, so as to
hold the knives against an endwise movement away from the inner face of the cone B
as shown in Figure 3. The larger ring of the knife frame is chamferred on the inside
to a thin edge as shown in Fig. 3 so that it does not obstruct the passage of the meat
from the feed screw groove to the cam groove in the head D³. It is not necessary
to chamfer this ring all the way around for this purpose, but it is just as well
to do so.
The ring at the small end of the knife frame is made large enough to slip over
the adjusting collar da on to the end of the feed screw shaft D and is also slotted to
pass the head of the set screw d³ which holds said collar on the shaft (See Figure 3).
Said screw and slot also serve as an index to indicate the proper position of the knife

page_text: frame in putting it in place. The set screw d³ has its end bearing against a flat seat
on the shaft, and by setting the collar in proper position the outer end of the cone
part B will bear against said collar, so that the binding ring E which secures part B
will not draw the cone shell too closely against the knives. By this means the proper
cutting contact may be regulated. This is quite important, as it prevents undue
pressure of the knives and cone, so that they will not heat, even when the machine is
run rapidly by power.
Furthermore, it removes, in a great measure, the wear of the knives on the inner
face of the cone.
The rotatable knife F F¹ is adapted to be placed within the conical shell B and to
operate in connection therewith.
A good form of a knife embodying the invention is that represented in the drawings,
in Fig. 6 in which F represents the ring at the large end of the knife, and F³ the
disc hub at the small end of the knife, and F represents four knife blades preferably
formed with or mounted upon the parts F2 and F3. The ring F2 is sufficiently larger
than the disc hub F³ to render the inclination of the knife blades connected to them
correspondent to the inclination of the conical shell B. The knife blades F themselves
are preferably formed, slightly curved in cross section.
The peripheries of the ring F and disc hub F are formed or beveled so that they
have an angular edge inclination coincident, and are flush or on the same plane with
the knife blade edges, and the said parts therefore coincide with the lines of the
frustum of a cone outlined by the knife blade edges. This construction allows the
knife blades to approach in operation very closely to the inner surface of the conical
shell, while the parts F2 and F3 being subject to the same frictional contact with the
conical shell as are the blade edges themselves, serve, when the knife is pressed into
frictional contact with the conical shell, to take the wear otherwise coming on the
blade edges.
Upon the shaft D and just within the bearing formed for it in the end of the conical
shell B is conveniently but not necessarily formed a square or polygonal seat d'.
The disc hub F³ of the knife has a central orifice of outline correspondent to the
seat d which adapts the knife to be seated thereon, and to be rotated therewith. The
length of the seat d' is in excess of the thickness of the disc hub F and this is
necessary as is hereinafter more fully described, to allow the knife the freedom of
longitudinal movement essential in carrying out the invention.
The knife as a whole is slightly less in length than the space allotted for it in the
conical shell, and this also to allow of the necessary movement of the knife.
Upon the inner face of the small end of the conical shell, and surrounding the
bearing therein, is conveniently formed an annular rib which may, indeed, be
the inner face itself of said end, against which the disc hub F³ bears or abuts when it
arrives at the outward limit of its movement, and when its exterior is in working
contact with the interior of the shell.
That end of the shaft which passes through the wall a³ is squared for the con-
venient application of a crank handle G or other device for imparting rotation to
the shaft.
A designates the main portion of the case, and B the perforated or open shell of
the case, which constitutes a series of stationary knives. At one end of the case A,
at its under side, an arm or bracket H is formed, having vertical ribs h h and
at the lower corner a flange h¹ is formed. The space between said flange h¹
and bracket H is in the nature of a peripheral groove or socket extending part
way around the case. The bracket H is also perforated for the reception of a bolt or
Screw
The standard J has vertical grooves in one side to fit the ribs h h of the bracket,
as shown in Figure 2, while its upper end is fitted to the peripheral groove or socket
in the under side of the case. The standard is also provided with a screw or bolt hole
which registers with that in the bracket H. The lower end of the standard may be
provided with any ordinary means for securing it to a bench or table, but it is
preferable to provide it with a clamp-frame J and clamp mechanism or screw j of any

page_text: ordinary construction, as shown, for securing it to the edge of
suitable supporting
table or shelf. By this construction of the attachable and detachable standard, the
case is properly elevated for convenient use, and after use it can readily be detached
from the standard, so that the case may be less bulky to handle for cleaning and more
compact to store away. When wanted for use, the case can be readily attached to
the standard.
The operation of the device will be readily understood. Assume the machine
stationary and empty, and the rotatable knife moved back on its seat so that its
blades are not in close contact with the conical shell. Rotation being imparted to the
shaft by the operation of the handle, material fed to the hopper is carried forward by
the screw toward the delivery end of the machine. In its passage thither it is through
the conjoint shear-like action of the sharp cutting ribs within the part A and the
thread on the shaft, to a large extent, divided. Reaching the outer end of the part A,
the material is delivered into the conical shell and within and behind the blades of
the rotating knife. Continued delivery of material into the conical shell will soon
fill it, and the pressure of the material against the disc hub and the blades of the
rotating knife will push the knife outwardly on its seat, and force its blade edges into
close contact with the inner face of the conical shell, when it will be in position to
begin and continue its function of shearing off from the main body of the substance
acted upon
all such parts as are pressed between the blades, and into the orifices of
the conical shell. The knife will thus be held in shearing contact with the conical
shell as long as material is fed into the machine. Upon cessation of the supply of
material to be acted upon, the knife, although of course continuing to rotate as long
as the machine is operated, will no longer be held tightly against the conical shell.
The annular rib 63 described serves to prevent any binding of the knife when unusual
pressure is put upon it.
The length of longitudinal play of the knife itself is limited by the size of the
conical shell, and the amount of space left therein for such play, and such length is a
matter which is to be predetermined, and regulated by the character of the material
to be operated upon.
As is obvious, knives mounted in the manner described, the edges of which are
prevented by the end rings F2 and F3 and the rib 63 from grinding against the edges
of the perforations opposed to them during the operation, will last much longer than
when constructed and mounted in the manner heretofore in use, for while heretofore
such knives have been adjustable by means of screw rings or other devices forcing
them against a perforated plate, they have not been self-adjustable.
It is obvious that the feature of taking the wear off of the rotatable knife blade
edges as described above, is capable of application with meat cutting machines in
general, and not confined to machines of the construction described.
Many obvious modifications in mechanical construction may be resorted to in
carrying out the invention. Thus instead of the hub and hub seat described, the hub
disc may be simply feathered upon the shaft, and instead of the rib 63 being formed
upon the conical shell it would answer the same purpose if formed upon the
hub disc.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me
by my foreign correspondents 1 declare that what 1 claim is :-
1. In an apparatus for mincing or cutting meat, the combination of the case having
the bracket and socket, said bracket being provided with the ribs h h the standard J
fitted to said bracket and socket, and having grooves or recesses for said ribs, and the
fastening screw for securing said standard and bracket together, substantially as
described, as and for the purpose specified.
2. In an apparatus for mincing or cutting meat, the combination of the driving
shaft, the two parts A B of the case, each having a bearing for one end of said shaft,
said parts being adapted to shut one over the other on a smooth surface and having
the stop-lugs to prevent rotation, and means to prevent one part from moving

page_text: longitudinally off from the other, substantially as described, and for the purpose
specified.
3. In an apparatus for mincing or cutting meat, the combination of the two part
case A B, adapted to shut one over the other, the feed screw shaft carrying the
peripheral knives, and the adjusting collar d on the end of the shaft inside of the
part B, to regulate the distance that part B shall be slipped upon part A, substantially
as described, and for the purpose specified.
4. In an apparatus for mincing or cutting meat, in combination, a feed screw, a
knife-frame, or composite cutter consisting of peripheral knives mounted upon or
connected by rings, said cutter being detachably mounted on and fitted somewhat
loosely upon said screw-shaft at or near its end, and adapted in the revolution of the
screw to be revolved therewith, and a shell provided with a perforated wall, the inner
surface of said perforated wall being in close contact with the cutting edges of the
knives, as specified.
5. The combination of the two-part case A B, the feed-screw D¹, having the head D³
provided with a shoulder on the outer end thereof, and the attachable and detachable
knife frame consisting of the larger and smaller rings and interposed knives, the
smaller ring of the knife-frame acting against the shoulder on the head of the screw-
shaft to hold said frame in position within the part B, substantially as described, and
for the purpose specified.
6. In an apparatus for mincing or cutting meat, the combination of the foed screw
shaft, the peripheral knives mounted on and moving with said shaft, a collar d' also
mounted on and moving with said shaft, the two parts of the case each having a
bearing for one end of said shaft, the part B bearing against the side of said shoulder,
and the binding ring E for holding the part B up against said shoulder, whereby the
interior of the cone part B is held in proper relation to the peripheral knives
substantially as described.
7. The combination of the two part case A B, the driving shaft having the feed
screw D¹ and the head D², and the knife frame consisting of the larger and smaller
rings, and intervening cutters fitted to said head at the end of said screw, and having
the ring at the larger end chamfered on the inside of the point, where the groove of
the feed screw joins the head D2, substantially as described and for the purpose
specified.
8. In an apparatus for mincing or cutting meat the combination of the feed screw
shaft, the set of peripheral knives, arranged in cone form, and the perforated cone
shell, having its inner face tapered to fit said knives for their operating length, and
then enlarged at the smaller end, substantially as described and for the purpose
specified.
9. In an apparatus for mincing or cutting meat in combination a cylindrical shell
provided with a feed inlet, a feed screw mounted in said shell, a conical shell provided
with orifices at the delivery end of said shell and a knife loosely and longitudinally
adjustably mounted on the feed screw shaft, substantially as set forth.
10. In an apparatus for mincing or cutting meat, in combination, a cylindrical
shell provided with a feed inlet, a feed screw mounted in said shell, a conical shell
provided with orifices at the delivery end of said shell, a knife loosely and longi-
tudinally adjustably mounted on the feed screw shaft, and a rib or stop interposed
between the framework of the knife and the said conical shell, substantially as
specified.
1311 LT1000
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool,
Agents for the Applicant.