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Патент USA US2131851

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Oct. 4, 1938.
M. R. ANSTICE
2,131,851
VEGETABLE SLICING MACHINE
Filed April 18, 1936
' 4 Sheets-Sheet l
S
Oct. 4, 1938.
M, R. ANSTICE
2,131,851
VEGETABLE SLICING MACHINE
Filed April 18, 1936
4 Shee'gs-Sheet 2
4A.
Oct. _4, 1938.
M. R. ANSTICE
‘
2,131,851
' VEGETABLE SLIGING MACHINE
Filed, April 18, 1936
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‘Oct- 4, 1938’
M. ‘R. ANSTICE
2,13i,851
VEGETABLE SLICING MACHINE
Filed April 18, 1956
4 Sheets-Sheet 4
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Patented Oct. 4, 1938
" ‘ UNITED STATES PATENT oFFicE
.
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2,131,851
VEGETABLE SLIQING MACHINE
Mortimer It. Anstice, Rochester, N. Y., assignor to‘
Josiah." Anstice & Company, 1110., Rochester,
N. Y., a‘corporation of New .York
;_‘ Application April 18, 1936, Serial No."75,216
‘4 Claims.
(Cl. '146—98)
The present invention has beenv conceived and partly in vertical section illustrating the .manner it "1
in which the knives will pass over the thickened
designed to provide a machine which‘is compara
portion of the conveyor at the point where the
tively. simple of construction yet is highly ef?
- ‘cient in the slicing of various fruits and various
vegetables such as carrots, beets, potatoesaor the
like into strips of what are often termed “shoe
string”.or ‘l‘julie‘nne” shapes.
".19
'
conveyor ends are joined together.
Fig. '7 is a view in end elevation of a modi?ed }
form of the invention.
‘
.
Fig. 8 is a'view in side elevation of the machine
_
One of thenovel features androbjects of the
invention is to providean improved manner of
mounting and supporting cutting knives in re
spect to the bed or conveyor of the machine so
appearing in Fig. 7.
I
Fig.9 is a View in side elevation of a further
form of slicer.
'
'
Fig. '10 is’ a‘ detail View partly in vertical sec
10
that the. knives will at all times have a predeter-. tion illustrating the cage carrying the cutting
knives of the machine illustrated in Fig. 9. _ .
mined engagement with the bedior conveyor.
Fig. 11 is a fragmentary view in elevation of a
A further object'in respect to the supporting
and mounting structure for the knives is to so modi?ed form of supporting the knives in the
design this mechanism-that‘ the knives will lift.
modi?ed form of machine appearing in'Figs. '7
and‘permit the passage'beneath them of any
andv8 of the drawings.
‘foreign substance; which may accidentally reach
the knives and which would have ‘a tendency to
One form of the machine embodying the pres
ent invention appears in Figs. 1 to 6 inclusive,
wherein it will be seen that A represents a metal 20
he frame of approximately a‘rectangular con?g- ~
break, nick, or otherwise injure them.
'7 d
I .
Another object‘of the inventionis the provision
.215
_
of a machine so designed that the: connector for
uration upon the opposite ends of which are
the ‘adjacent ends of the conveyor is protected
against being cut or damaged by the'knives and
in turn the knivesare protected‘ against damage
from the connectors in the event ‘the same should
‘mounted shafts l and 2. A drum or roller is
be of a metallic nature.-
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i
mounted upon each of the shafts and is rotatable
therewith‘and over these ‘drums an endless con 25
veyor B is trained.‘ Suitable ?anges 3 at the
, drum ends guard against longitudinal displace
'1
A. still furtheriobject of‘ the invention is the
provision of automatic means for clearing the
ment of the belt.
‘
_
The‘ conveyor is‘ in the form of a belt which
tion is to provide .a‘yieldable supporting means
for the slicing knives whereby the knives are
preferably has a rubber surface, and as appears 30'
in Fig.3 of the drawings the belt may be vof a
laminated nature in that its rubber surface 4
maybecarried upon a suitable base such as fab
ric 51' The belt may be of a form‘wherein‘ it is
freely movable towards and away from the con
truly endless in the sense ‘that its ends are vul
Other further‘objects, ‘noveljfeatures of con
struction and improved results will appear in the
illustrated'in Fig.6‘ of the drawings where the
following ‘description’when read in the‘ light of
able metallic fastening means 8.
knives of strips cutv from the vegetables or other
‘ produce-upon which the knives are operating;
Another and still‘ further ‘object of .the inven
at?
v i
canized together, or the'belt may be of the form '
the accompanying drawings. .
it?
belt endsv 6 and ‘i are secured together by suit
'
It is to ‘be understood however that the belt ,
_In the drawing SI
‘ need'not be of a ‘laminated nature as it could be
Fig. ‘l is?avview. in side elevation of a machine composed'entirely of rubber, and furthermore it
built in. accordance with the present invention.
will'be understood that it is not absolutely‘ es
. Fig. 2 is atop plan view of the machine. . >
‘sential that the belt be composed of rubber, al as 5
d Fig. 3 is a. fragmentary enlarged-detail viewin' though rubber has been found to be the prefer
vertical section taken on the line >3—3 of, Fig. 1. able material to use.
Fig. 4 is ‘an enlarged fragmentary vertical sec
A shaft 9 is rotatably supported in bearings Hi
a5
tional View through aportion of thejmachine bed
‘or conveyor showing in‘vertical ‘section ‘the en
formed at one end of the arms II which are piv
otally mounted as at 12 to the supporting frame.
These arms extend upwardly from their pivotal
. tical section. illustrating one of the knife clearing _ supports at each side of the frame and at each
?ngers and the‘enga‘gement of one of the knives ‘sideof the conveyor belt, as appears clearly from
Figs. land 2 of the drawings, so that the shaft
with the conveyor.‘
.59
(55 ‘
gagement of several of the knives with said bed.
Fig. 5 is .an enlarged detail View partly in ver
Fig. ,6 is 'av fr agm entaryv diagrammatic
view
which they’ carry is disposed above the conveyor
2
2,131,851
belt and above the drum at the right hand
end of the machine.
A plurality of circular knives 13 are loosely
mounted upon the shaft and are spaced from
one another by suitable spacers l4 also loosely
mounted upon the shaft 9. These circular knives
and spacers are disposed between rollers C which
are loosely mounted upon the shaft. Tubular
the movement of the vegetables on the belt con
veyor.
A slicer is diagrammatically illustrated at E
and is positioned above the belt conveyor adja
cent the left hand end of the machine. Detailed
description of this slicer is considered unneces
sary in that it constitutes merely some con
ventional form of device for slicing vegetables,
bushings l5 extend through these rollers and
10 have engagement at their inner ends with the
spacers l6 positioned between the outermost
fruits or the like into slabs or slices of any de
knives and the rollers while their other ends
are engaged by right and left hand threaded
knives and the rollers C these members are yield
nuts I1. These bushings extend outwardly be
15 yond the outer faces of the hub portions I 8 of
weight 2| assures against the knives lifting rath
the rollers whereby the nuts can be tightened
upon the bushings. With the construction de
scribed the knives and bushings can be tightly
10
sired thickness. _
By reason of the pivotal mounting of the
ably supported upon the conveyor belt.
The
er than cutting through any vegetable or fruit
slices carried to the knives by the belt conveyor.
This particular form of mounting is advantageous
in that it will permit the knives to rise and ride
clamped for rotation with the shaft by tighten . over any foreign substance which may fall upon
20 ing the nuts 11 and I8 without tightening against the conveyor and be carried to them. In this 20
manner the knives are protected from being
the rollers.
'
At this point attention is directed to the fact broken or injured as might be the case could
they not lift and ride over foreign substances.
that the knives are of a slightly greater diameter
than the diameter of the rollers with the result
25 that their peripheral cutting edges extend into a
plane beyond the plane of the faces I 9 of the
rollers. This constructional feature is of im
portance in the present invention as will be here
inafter more speci?cally pointed out._
A supplemental arm 28 extends outwardly from
30
the upper end of each of the pivotally mounted
main arms II and across the ends of these arms
is positioned a weight 2|.
,A pair of bars 22 also extend across the space
35 between the supplemental arms 20 and these
rods are arranged in separated parallel rela
tionship. A series of ?ngers D are carried loosely
by these rods and have portions 23 which extend
into the space between the knives 13. With their
40 loose mounting, the ?ngers can move axially of
the rods and properly center themselves between
the knives. Bars of an angular shape in cross
section could be substituted for the round rods
illustrated. This series of ?ngers constitute a
45 comb which functions in a manner hereinafter
to be more fully described.
’
The shaft 2 at the right hand end of the
machine extends outwardly beyond the support
ing frame and is provided with a pulley 24, which
is adapted for driving connection with any suit
'60
able source of power drive. Rotation of the
shaft 2 and its drum will through the conveyor
B rotate the shaft I and its drum. Rotation of
the shaft 2 is in a clockwise direction with the
result that the conveyor rotates also in a clock
wise direction, as is clearly indicated by arrow
on Fig. 2 of the drawings.
The shaft l at the opposite end of the machine
is extended outwardly and carries a pulley 25
and the shaft 9 is extended outwardly and car
ries a pulley 26. A driving belt 21 interconnects
these two pulleys with the result that the shaft
9 is driven off of the shaft I and therefore by
65 the main source of power drive connected to the
main drive pulley 24.
The _drive for the shaft
9 is so arranged that this shaft rotates in a
counter-clockwise direction, as indicated by ar
row in Fig. 1 of the drawings.
70
.
Preferably, although not necessarily, the shaft
9 and its knives may be rotated at a greater
speed than the travel of the belt conveyor. It
has been found that better results in the slicing
of certain vegetables can be obtained by speed
ing up the rotation of the knives in respect to
As mentioned, the speed of the knives will '
vary due to the toughness of the vegetable or 25
the thickness of the slice.
It has been mentioned that the belt conveyor
itself be rubber, have a rubber surface or have
a surface of some similarity to rubber. It is of
the utmost importance, for the purpose of assur 80
ing a clean and complete cut of the vegetable
slices by the knives, that the knives actually
penetrate the conveyor belt. It is also highly
important that provision be. made that the knives
penetrate the conveyor belt, only a predetermined
distance, for otherwise it will be readily under
stood that the conveyor belt would be quickly de
stroyed. This feature has been taken care of
in what is considered to be a particularly novel
manner by the provision of the rollers C which 40
are of a predetermined lesser diameter than the
diameter of the knives.
By reference to Fig. 3 of the drawings it will be
seen that the faces I!) of these rollers bear upon
the marginal edges of the conveyor belt, which '
belt at this point is supported upon the drum or
roller 28. The area of the faces of these rollers
are su?icient to prevent the'rollers from actually
penetrating the rubber belt although they may
slightly compress it.
By this arrangement the '
knives actually penetrate into the surface of the
50
belt a distance which is equal to the distance
‘which they extend beyond the rollers, which is of
course the actual difference in diameter of the
knives and the rollers. The penetration of the 65
cutting edges of the knives into the belt is dia
grammatically illustrated in Fig. 4 of the draw
ings. After the machine has been in operation for
some time the belt actually becomes grooved to
receive the cutting edges of the knives, as is desig— 60
nated at 29.
'
The problem of de?nitely providing for the pen
etration of the knives a predetermined distance
into the belt is one which although fully taken
care of in a simple manner in the present inven
tion was not a problem simple of solution. This
is true because belts are not guaranteed to be of
uniform thickness throughout their lengths. The
present arrangement however will assure penetra
tion of the knives a predetermined distance into 70
the belt irrespective of variance in the thickness
of the belt. Additionally when the belt ends are
joined, as illustrated in Fig. 6 of the drawings it
is customary to place a protective covering such as
30 over the connectors or lacings. If metallic con 75
3
2,131,851
necting means‘is utilized this‘ ‘covering is necessary of wood, ‘?nds its way to the conveyor the knife
to protect the knives‘ against injury, and if a type blades will ride over it without undue injury due
‘ 7
of lacing is used which'is susceptible of being cut to their pivotal yielding support.
Although the machine is particularly and spe
by the knives it is necessary to protect-the'lacing
against. the knives. ‘ Consequently in ‘either ‘event ci?cally designed for cutting vegetables, fruits or
the protecting cover element 30 is necessary with‘ foodstuffs into ‘strips, it is capable of other and
different uses without departing from the spirit of
the result that the thickness of the belt is mate
rially increased at the point‘iwh‘er‘e ‘the belt‘ ends
are connected.
“10
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The improved ‘arrangement heretofore de
scribed however is s'uc’h as to-assure-‘a prede
termined penetration‘of‘ the knives‘ even at this
the invention.
.
The modi?ed form of machine shown in Figs. 7
and 8 can be described in a few words in the light
of’ the foregoing description. In this machine the
same slicer E is provided but in this instance it
point where the belt is greatly thickened. Fig. 6 , delivers the fruit or vegetable slices to a rotatably
of the drawings illustrates the manner in which mounted’ drum F the face of which has a rubber
the rollers will‘ follow the thickened contour ‘of coating 32'or its equivalent. The knives I3 which
the belt and lift the knives the necessary distance
to maintain the predetermined engagement of the
knives with‘thebeltj’
‘1' "
‘W’
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'
are exactly ‘similar to those hereinbefore de
scribed, are mounted in spaced relationship upon
' a shaft 33 provided with 'a pulley 34 having belt
vide ‘for varying conditions of operation and to
connection drive 35with the supporting shaft 36
of the drum, which shaft is provided with a pul 20
ley 31 intended to have driving connection with
provide for cutting the vegetables‘ into strips of
any suitable source of power.
It is to be understood that thenumber of knives
“20 and their,‘ spacing can be varied as desired to pro
V
The knife'assembly is carried by the arms 35
the knives, as well as protecting the operator of and 39 which are joined'by a shaft 45 which is piv
or rotatably mounted in suitable brackets 25
the machine, a removablehood or guard 3| is pro .otally
M positioned at each side of the drum and con
From the description thus ‘far given it will be nected to the drum supporting base H.
The knife assembly is provided with rollers C
seen that the knives‘ are pivotally‘ mounted in re
such
as hereinbefore described, which engage the
spect to the conveyor ‘which is 'thejbed against
coated surface of the drum and are of slightly‘ 0
which they cut. The machine is designed prima
any desired width. ‘ For‘ the purpose of protecting
vided.
so
,
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"
‘
'
rily for ‘sale to canners to provide a device by which ~ less diameter than the knives to assure a pre
vegetables or fruits can be readily and cheaply
cut into strip or shoestring form. However the
canner maybe called upon to ?ll an order where
determined penetration of the knives into the
drum coating in a manner exactly similar to that
hereinbefore described. Weights 42 are adjust
able upon extension arms 43 of the main knife as
slices or slabs, and to enable the canner‘to use the ' sembly arms 38 and 39.
Just as in the ?rst described form ‘of machine,
slic‘erjE for this purpose the present machine is
the customer desires‘ the product out only into
provided with a pivotally mounted bracket arm 32
‘which may be "swung upwardly for engagement
with one, of the supplemental bracket arms 20 to
hold‘the knives in an elevated position'abo-ve and
erates in actually'slicing the vegetables. A modi- - ‘g
fled mannerv of providing adjustable means for
of the machine without being operated upon by
holding the‘knife assembly in engagement with
the drum is illustrated in Fig. 11 of the drawings
where it will beseen that the shaft 44 which
carries the knivesl3 and the rollers C is jour~
the circular knives l3.
nalled at its opposite ends in blocks 45 which are ‘
. out of engagement with the belt so that the vege»
table slices ‘delivered to ‘the ‘belt by the slicer E
may pass o?the conveyor at the right hand end
'
_
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j
- In operation the vegetables, fruit or other food
reciprocable within openings 45 provided in the
If the vegetables have been cut into slices one
The
weight of the knives and the rollers will in itself
maintain them in‘proper engagement ‘with the 1'
face 32 of the drum and the upward movement
ofthe shaft and the knives is adjustably under
eighth’ inch thick the knives I3 wouldpreferably
the control ‘of the set screws 48.
stuff desired to‘ be cut into strips ‘are fed to‘ the
slicer E which will cut them into slices or-slabs
and drop them out upon the conveyor ,B'which will
carry them toward and‘ to the revolving knives.
have been spaced to cut the slices into strips one“
eighth inch wide so that the finished strips would
be approximately square in cross section.
The rotation of the knives will be such as to be
proper for the type of vegetableabeing operated
upon. The weight ‘2! will assure that the knives
will cut the vegetableslices irrespective‘ of their
toughness or thicknessl The rollers C are rotating
freely on their supporting‘ shaft 9 and are con~
upper ends of the arms. or uprights 41.
’
'
In respect to this particular embodiment of the >
machine provision is made whereby the‘knives
are rotated in a direction opposite‘ to the direc
tion of rotation of ‘the drum and the ?ngers or
comb heretofore mentioned in respect to the ?rst
lformof invention described is also utilized and ,_
is designated by the ‘same letter. namely D.
In Figs. 9 and 10 of the drawings a still differ
ent machine isillustrated for accomplishing the _
'stantly engaging the conveyor belt and at ‘all times
cutting of ‘vegetables or the like into strips. The
assure proper and'de‘?nite relationship between
principle of operation of this ‘machine is similar ‘_
the knives and‘ the conveyor belt.-
to the machines previously described but a slight
‘ ‘
\
' ‘
The vegetable slices will pass through the knives
and be cut intothe desired strip ‘form and will be
delivered into a receptacle or the like placed at the
right hand end of themachine for their reception.
‘Any vegetable or fruit ‘strips whichmight adhere
to the knives will ‘be'removed from them by the
combs or ?ngers D which'willcause them to‘fall
downwardly upon theiconveyorifor delivery into
the waiting receptacle.
75
the knife assembly is pivotally and yieldably in
engagement with the conveyor against which it op
‘
'
‘
If a foreign substance,‘ such as a block or‘ stick
ly different speci?c form of‘construction in that
the knife blades are arranged at right angles to '
the direction of movement of the conveyor rath~
er than in alignment with thedirection of move- ‘
ment of the conveyor.
7 -
Describing this particular embodiment of the
invention, R. ‘and S designate bases or pedestals
arranged in separated relationship. The shaft
59 carrying a drum‘5l is rotatably mounted on
the pedestal R while a shaft 52‘ carrying a drum
5'
4
2,131,851
53 is rotatably mounted on the pedestal S. The
endless conveyor belt B extends around these
drums.
'
The drum 5| at one‘end has its stub shaft 54
mounted in a horizontal plane above its stub
shaft 55 at its opposite end. By this construc
tion the drum is arranged at an angle to the hori
zontal, as clearly appears in Fig. 10 of the draw—
ings.
the conveyor as Well as a reversal in the direction
of the cutting knives.
vegetables or food-stu? into slices or slabs be
conveyor. The slicer which performs this func 10
tion could be positioned remote to the machine
and the slices of vegetables or food-stuff brought
56 mounted in separated parallel relationship
to the conveyor in any suitable or convenient
between the rollers C. The knife blades extend
manner.
15 slightly beyond the periphery of the rollers.
This cage is rotatably supported on stub shafts
5? and 58 which are suitably journalled in de
pending arms 59 of the pivotally mounted arms
60. Each of the arms 60 is provided with an
20 extension portion 6! upon which is adjustably
mounted a weight 62.
‘
The arms 66 are illustrated as being pivotally
mounted upon the shaft 52 and the arms are of
such a length that the squirrel cage rests upon
25 the belt conveyor immediately above the inclined
drum or roller 5|. The squirrel cage is given the
same inclination as the drum by mounting its
stub shaft 5'! in a horizontal plane above its
opposite end stub shaft 58.
5
It should also be obvious that it is not neces
sary or essential that the slicer which cuts the
positioned immediately above or adjacent the
The knife assembly is in the form of -a squir
rel cage designated as an entirety by T. This
squirrel cage comprises a series of knife blades
30
of the machine to that in which it is illustrated
in the drawings. Reversal in this manner would
mean a reversal in the direction of movement of
'
The rollers C engage the belt conveyor and
permit the cutting edges of the knife blades to
penetrate or cut into the conveyor belt only a
predetermined distance, namely the distance
which said blades extend beyond the peripheries
35 of said rollers.
The conveyor is driven through a pulley 63
and the squirrel cage through a pulley G4. Slices
of vegetables are delivered to the conveyor by a
suitable slicer E.
40
In operation the vegetable slices fall from the
slicer E onto the conveyor which carries them to
the slicer blades 56. As the slices pass between
the blades and the conveyor belt they are cut into
strips, which strips enter into the hollow cage
45 and due to the inclination thereof are discharged
through the openings 65 provided in the roller C
at the low end of the cage and at the low side
From the foregoing it will be seen that the 15
present invention provides an extremely simple
machine yet is capable of rapidly, e?iciently and
economically slicing all kinds of vegetables into
strip or shoestring ‘form. The machine is not
limited to operation upon any particular vege 20
tables or to vegetables of any particular shape
as it will operate equally as well on carrots or
any foods as it will on potatoes.
It will be further understood that machines
built in accordance with the invention will be 25
economical of operation because of the positive
provision which is made to assure the knives out
only a predetermined distance into the conveyor.
With this attribute a. very considerable saving
will be effected in the matter of the necessity of 30
replacement of conveyors. The construction is
such that the knives will completely out or sever
the entire thickness of the vegetable slices yet
at the same time will not detrimentally affect the
conveyor against which the knives operate.
35
I claim:
1. In a slicing machine, an endless conveyor
having a surface capable of being penetrated by
knives, means to deliver slices of vegetables to
said conveyor, a rotatable shaft carrying a plu 40
rality of knives rotatable with the shaft and ar
ranged in spaced parallelrelationship, a pair of
rollers carried by said shaft and of slightly less
diameter than said knives, said shaft positioned
above said conveyor and freely movable in re
spect thereto, said rollers being freely rotatable
45
upon said shaft and adapted to engage said con
_
veyor for de?nitely determining the degree of
Mention has been made of the fact that axial contact of the knives with said conveyor, means
50 movement of the rollers, T is limited by reason to rotate said conveyor towards said knives, and
of the fact that these rollers are positioned at the . means to rotate said knives in a direction opposite
inner sides of the flanges of the end closures of to the movement of said conveyor.
2. A construction such as de?ned in claim 1,
the roller or drum. This construction assures
that each of the knives will continuously contact wherein means are provided for rotating the
55 the belt conveyor on the same line which is of knives at a speed greater than the movement of
55
material importance to assure that the knives the conveyor.
will eventually groove the conveyor in the man
3. In a slicing machine, an endless conveyor
ner hereinbefore described and that each of the having a surface capable of being penetrated
knives will enter and run in its proper groove by knives, means to deliver vegetables to said
60 after the conveyor becomes grooved from con
conveyor, a rotatable shaft carrying a plurality 60
tinuous usage.
‘
of knives rotatable with the shaft and arranged
It is realized that a pre-grooved belt could be in spaced parallel relationship, a pair of rollers
used, but it has been found to be more desir
carried by said shaft and of slightly less diameter
able not to use such a belt because the belt con
than said knives, said shaft positioned above said
65 veyor through its engagement with the knives conveyor and freely movable outwardly in re
65
tends to sharpen or hone them and thus main
spect thereto, said rollers being freely rotatable
tain them in a bright and sharpened state. In upon said shaft and adapted to engage said con
other words, permitting the knives themselves to veyor for de?nitely limiting the inward move
cut their own grooves is preferable to pre-groov
ment of the knives to determine the distance they
70 ing the belt conveyor.
.
shall penetrate said conveyor, and the free out
Although it is probably obvious, mention is ward movement of the knives acting to avoid in 70
made of the fact that the machine can be re
jury thereof by foreign matter on the conveyor,
versed without departing from the spirit of the and means for rotating said conveyor and said
invention. The machine will be reversed when knives.
75 the knife assembly is moved to the opposite end
4. In a slicing machine, an endless conveyor 75
of the conveyor.
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_
2,131,851
having a surface capable of being penetrated by
knives, means to deliver vegetables to said con
veyor, a rotatable shaft carrying a plurality of
knives rotatable with the shaft and arranged in
spaced parallel relationship, a pair of rollers car
ried by said shaft and of slightly less diameter
than said knives, said shaft positioned above said
conveyor, said rollers being freely rotatable upon
5
said'shaft, means holding said rollers in engage
ment with said conveyor for de?nitely limiting
the inward movement of the knives to determine
the distance they shall penetrate said conveyor,
and means for rotating said conveyor and said 5
knives.
MORTIlVIER R. ANSTICE.
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