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Патент USA US2121351

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June 21, 1938.
2,121,351
C. F. M. VAN BERKEL
'
'SLICING MACHINE
Filed July 2, 1934
2 Sheets-Sheet 1 ‘
FIG-l.
-
INVENTOR: '
C o R N E L 5. F
‘M.
Vm B E R K ,E L
June 21, 1938.
c. F. M. VAN BERKEL
2,121,351
SLICING MACHINE
Filed July 2, 1934
2 Sheets-Sheet 2
INVENTOR:
CORNELIS F. M. VAN BERKEL
BY
I
'
<ri?w. ATT'YS.
Patented June 21, 1938
2,121,35i
UNITED ‘STATES PATENT" OFFICE
‘ smcmo
2,121,351
MACHINE
C‘ornelis ‘F. M. van Berkel, Wassenaar, Nether- “
lands, assignor to U. S. Slicing Machine Com
pany, La Porte, Ind., a corporation of Indiana ‘
Application July 2, 1934, Serial No. ‘733,406
In ‘Great Britain July 6, 1933'
11 Claims.
' (Cl. 146-102)
This invention relates to slicing machines, and
during the slicing‘ operation and during return
particularly to that type of slicing machines em—
ploying a gauge plate against which a food pusher
forces the substance to determine the thickness of
movement of the carriage, thereby eliminating the
usual smearing of the knife.
a slice.
locking means to permit or prevent movement of 'I‘
.
In machines of the above type it is usually nec
essary to provide in association with the gauge
‘iii
the substance "in a feeding direction, which look
ing means is interposed between the substance
plate, a ‘cover plate which is concentrically ar
engager or ‘food ‘pusher and, a stationary part of
ranged with respect to the knife, the cover plate
having its active surface arranged substantially
in the cutting plane. In ‘operating these devices
the substance to be sliced is ‘first pressed against
the machine, and which cooperates with a mem
the gauge plate so that when the carriage is moved
toward‘ the knife, a slice ‘will be‘cut .from the sub
stance, the pressure normally, exerted on the
substance being transferred from the gauge plate
to thecover ‘plate. Many food slicing machines
are provided with spring means for normally
urging ‘the substance toward the gauge plate and
"20 toward the cutting plane.
Instead of using the
automatic feed arrangement, such as by the
spring as just described, the substance may be
pressed manually toward the gauge plate and the
cutting plane of the machine. These above ex
isting machines however are subject to the dis
advantage that there is considerable friction ‘be
tween the substance and the cover plate which
ber which maintains said means in unlocked po it
sition so long asthe food “pusher is so positioned.
that the substance can be put against the gauge
plate in readiness for aeslicingstroke.
A still further‘object of the invention is to pro
vide locking means comprising the form of a 1%
clutch which is normally spring pressed into lock
or brake engaging" position on ‘ a rod passing
through a ring.
,
‘
'
‘
7
'
Numerous other objects and advantages will
be apparentthroughout the progress of the fol
lowing speci?cation.
‘
1
‘
therein are as follows: “
,
.
Fig. 1 is a .detail sectional elevation of a slicing
machine and embodying the‘, invention, certain .25
causes smearing and increases the e?ort neces
sary to successfully operate the machine.
shown in Fig. 1.
provision whereby‘ the ‘above disadvantages will
be obviated, and to provide simple‘ and effective
means to'prevent undue friction and smearing.
Another object is to provide a slicing machine
with locking means‘ to prevent movement‘ of the
substance in the feed direction during a predeter
mined portion of the slicing stroke, and for ‘per
mitting movement of the substance toward feed
direction when the carriage attains a predeter
mined position.
‘
A further object of the invention is to provide,
in e?ect, a braking element to arrest movement
of the substance in a‘feeding direction, whether
or not the substance is moved toward the gauge
plate, manually, by gravity, or automatically such
1 as by spring means, throughout a predetermined
portion of the operating stroke, and which permits
the substance to be released and free to move to
ward the gauge plate when the carriage attains
a predetermined position.
'
A further object of the invention is‘ to provide
a braking means to permit or prevent movement
120
The ‘accompanying drawings illustrate a se
‘lected embodiment of the invention and the views
parts being omitted for vthe sake of ‘clearness.
Fig. 2'is a deta‘ilyplan section of the device
‘ 'An object of the present invention is to make
(55
" A ‘further object of the invention is to provide
I
p
'
Fig. 3 is a fragmentary detail, view.
Fig. 4 is avdetail elevational View showing one
form of slicing machine whereby the substance is
.30
movedinto position by gravity.
Referring ‘to the drawings, 4 designates a ro
tary knife with which there is arranged for co
35
operation therewith a gauge plate 5, the sup-r ‘
‘porting vmeans for the gauge plate being not
shown as ‘it is 1well known in the art.
The parts are all operatively arranged relative
to a stationary base 6 having guide bars 1 there ,40
on.
A carriage 8 havinga substance support or ' ‘
table is adapted to be reciprocated along the bars
by means of a handle ‘9. ‘The substance support
ing table'may be, corrugated as indicated at l0
and this substance supporting table comprises 45
part of the carriage 8. A food pusher II is ar
ranged inoperative position relative to the sub
stance table and ‘forms a part of a bracket I 2
which is slidably mounted on a guide rod I3 which
extends across the carriage 8 in the line of feed. 50
The bracket l2 and its cooperating food plate ll ‘
of the substance toward the gauge plate at pre
determined intervals whereby the substance is
may be continuously. urged in the direction of
feed by a long spring H! which is secured at its
opposite ends l4a, to urge the food pusher in a
prevented from being forced against the knife
predetermined position.
This spring l4 passes
2
2,121,351
around pulleys l5, l6 and I1 on the carriage 8.
This spring is not claimed per se herein, but is
claimed in the application of Joseph Folk, Serial
No. 7,325, ?led February 20, 1935, said applica
tion being a division of an application of Joseph
Folk, Serial No. 685,513, ?led August 1'7, 1933,
the carriage is being moved forward and. past
the knife, the substance will not be advanced be
yond the cutting plane of the knife. Therefore,
the substance is prevented from pressing against
the knife at the completion of the forward stroke
of the carriage and during the return move
issued January 26, 1937, as Patent No. 2,068,980, ment of the carriage. As there is no pressure
exerted beyond the cutting edge of the knife, the
the said Folk applications being assigned to ap
usual cover plate on the knife may be dispensed
plicant’s assignee.
with.
A composite clutch ring 20 which may com
10
It is advantageous that the food pusher be
prise two rings arranged close together, loosely embraces the rod l3. The ring 20 is mounted locked during the loading of the machine, that
in the bracket l2 in such a manner that it is is, when substance to be sliced is being arranged
free to tilt slightly into locking engagement with on the feed table. Therefore, means are pro
15 the rod and when so tilted, locks the bracket l2 vided for locking the food pusher when it is moved
to its retracted position. The means may com
against movement along the rod 13 in one di
prise a latch 40 which is pivotally attached at 4|
rection,-the direction of feed. The arrange
ment is such that the ring 20 cannot lock the to the bracket l2. This latch 40 cooperates with
a recess 42 provided in the carriage 8, Fig. 3.
bracket l2 against movement in the return vdirec
20 tion. A small spring 2| continuously presses the The latch construction is so arranged that the
‘latch will automatically engage the recess when
ring to lock itself to the rod l3, and an unlock
ing device is provided for rendering the ring ever the pusher plate is moved to its fully re
20 inoperative as a lock-that is, for releasing tracted position.
Means 43 may be provided to permit lubrication
its lock action-in opposition to the yielding
of the bracket I2 and the rod l3.
_
25 pressure of the spring 2|.
Instead of providing spring means for urging
The aforesaid unlocking device comprises a pin
22 which is loosely attached to the ring, 2|] and is the food pusher toward the cutting plane of the
slidably mounted in the bracket I2. An arm 23 knife, the food may be urged toward the cutting
plane by a manual operation. subconsciously the
is‘ connected by a link 24 to the pin 22 and is piv
30 otally attached at one end to the sliding bracket operator will exert substantially the same pres
I2. A rail 25 which extends across the carriage sure on the substance throughout the forward
is connected to the carriage at its ends by short and return stroke of the carriage. However, this
pressure is prevented from being applied at all
arms 26. This rail 25 has a depending arm 21
for rocking the rail into engagement with a roller times except when the substance is directly op
35 28 on the arm 23. A stationary cam-like member posite the gauge .plate.
29 is secured to a part of the base and is posi
Also, the substance may be urged toward the
tioned in the path of‘ a roller 30 which is mounted cutting plane by gravity. In connection with
on the arm 21. The arrangement is such that the gravity feed, it may be advantageous to have
when the carriage 8 occupies a position in which
the feed table and carriage inclined at an angle
the roller 30 is clear of the cam member 29, the so that the normal tendency of the substance and
roller 30 will occupy its lowermost position as
the food pusher is to move by gravity toward the
diagrammatically shown in dotted lines in Fig. cutting plane of the knife. This latter construc
1. When the'roller 30 is in its lowered position, tion is clearly shown in Fig. 4 in which the right
the rail 25 will be free of the roller 28 and the
hand side of the machine is considerably elevated
clutch 20 will be free to exercise its locking ac
so that the normal tendency of the substance
45 tion on the rod l3. When the carriage occupies .and the substance pusher will be to drop by grav
a position in which the roller 30 is in engage
ity toward the cutting plane of the knife. In
ment with the cam-like member 29, the rail 25 order- to permit even slices to be cut from the
will engage the roller 28 and maintain it in de
substance, it is advantageous that the knife be
pressed position causing the pin 22 to hold the arranged in a plane perpendicular to the feeding
clutch
ring
20
unlocked.
,
p.
.
50
direction of the substance. In Fig. 4 the base 6
The cam member 29 is shown ?xed to the base has the carriage 8 inclined downwardly toward
6 in a position immediately adjacent the gauge
the gauge plate 5 and the knife 6’. Therefore,
plate 5. However, the cam member 29 may be
adjustably arranged in position and be free to the substance moving to the left, Fig. 4, by grav
moved as desired for causing operation of the ' ity, will be assisted in its movement by the weight
55 be
of the substance or food :pusher H which also
clutch. As shown, the clutch ring 20 is in un
tends'to move to the left, Fig. 4, by gravity. How
locked position when the carriage‘ is at the oper
ator’s end of the machine. When in ‘this latter
position, with the clutch ring 20 unlocked, the
60 food pusher II will move toward the gauge plate
under the action of the spring 14.
As the car
riage is moved forwardly, that is, away from the
operator, the clutch-ringgwill lock and the bracket
and food pusher will be prevented from being
65 urged toward the cutting plane of’ the knife.
Therefore, when the carriage 8 is at its starting
position, the food'or substance pusher will be
directly opposite the gauge plate, and the food
pusher, through the urging action of the spring
70
l4, will cause the substance to be moved against
“the gauge plate. As the carriage is advanced to
ward slicing positioln,"the roller 30' will leave the
10
15
20
25
30
45
50
55
ever the locking means 20 prevents the movement
of the substance and the substance pusher sup
port except when the carriage is at the end of 60
its return travel, that is, at the operator’s end
of the machine. In operation the food pusher
II, which may be pivoted at 50, locks or holds
the substance on the feed table ill, but when the
roller 30 engages the cam 29, unlocking the brake 65
‘means on the rod I3, the substance will move
by gravity against the gauge plate 5. As the car
riage is moved forwardly, that is, away from the
operator, the roller 30 will move off the cam 29
and cause the locking device 20 to lock with the 70
rod I 3. In this position the food pusher II will
be locked in position, and the substance, being
cam member 29 at which ‘time the‘ bracket and
held by the food pusher II, will be prevented
food pusher will be immediately locked against
‘further action of the spring l4. Therefore, as
75
from moving in the feed direction. The substance
is therefore locked during the cutting operation,
3
2,121,351
during the completion of the forward movement
ward, locking means operable in any position of
of the carriage, and during the return stroke of
said feeder within said range of travel for pre
the carriage until the rod 25 is again rocked by
venting operation of said feeder by the urging
reason of the roller 30 engaging the cam 29.
means, said locking means comprising a bar on
The invention. provides simple and effective
means for preventing pressure from being ex
erted against the knife during the completion
of the forward movement, and a substantial por
tion of the return movement, of the carriage.
10 Therefore, undue friction is eliminated and all
smearing of the knife is eliminated. Further
more, the usual cover plate for the knife may be
dispensed with. The invention is susceptible for
operation whether the substance is moved toward
15 the gauge plate by manual pressure, by gravity,
or by spring pressure.
Changes may be made in the form, construc—
tion, and arrangement of the parts without de
parting from the ‘spirit of the invention or sacri
20 ?cing any of its advantages, and the right is
hereby reserved to make all such changes as fairly
fall within the scope of the following claims.
The invention is hereby claimed as follows:
1. A slicing machine comprising a gauge mem
25 her, a slicing knife, a carriage, said carriage and
said slicing knife being relatively movable trans
the carriage parallel to the path of travel of the
feeder thereon, and a locking member secured
to the feeder having a bore slidable along the bar,
and means for tilting said member to angularly
displace the axis of said bore from the.axis of
the bar to engage the edges of the bore with
the bar whereby to lock the locking member to
the bar, and means to control the action of said
tilting means comprising an operating mecha~
nism engageable with the member, and means
controlled by the relative transverse movement 15
between the carriage and slicing knife for oper
ating said mechanism.
4. A slicing machine comprising a frame, a ro
tary slicing knife, a gauge plate arranged to one
side of the knife substantially in the cutting plane 20
thereof, a carriage reciprocable across the face
of the gauge plate and the face of the knife, a
substance feeder mounted on the carriage for
movement toward the cutting plane, a spring re
siliently urging the feeder toward the cutting 25
plane, and locking means for locking the feeder
versely whereby to bring the carriage alternately . from movement Joy said spring, said locking
into alinement with the gauge member and the means comprising a bar on the carriage parallel ,
slicing knife, a substance feeder on the carriage to the path of travel of the feeder thereon, and
30 movable forward toward the gauge member and a locking member secured to the feeder having a 30
slicing knife through a given range of feeding
travel, means yieldingly urging the feeder for
ward, and locking means operable in any position
of said feeder within said range of travel for
35 preventing operation of said feeder by the urg
ing means, said locking means comprising a bar
on the carriage parallel to the path of travel of
the feeder thereon, and a locking member se
cured to the feeder having a bore slidable along
the bar, said member being tiltable to angularly
displace the axis of said bore from the axis of
the bar to engage the edges of the bore with the
bar whereby to lock the locking member to the
bar.
45
2. A slicing machine comprising a gauge mem
ber, a slicing knife, a carriage, said carriage and
said slicing knife being relatively movable trans
versely whereby to bring the carriage alternately
into alinement with the gauge member and with
50 the slicing knife, a substance feeder mounted on
the carriage, means yieldingly urging the sub
stance feeder longitudinally forward toward the
gauge member and slicing knife, locking‘ means
for preventing movement of the substance feeder
55 longitudinally forward when the carriage. is
alined with the slicing knife, and means operable
when the carriage is alined with the gauge mem
‘ her for disabling the locking means, said locking
means comprising a bar on the carriage parallel
60 to the path of travel of the feeder thereon,‘ and
a locking member secured to the feeder having a
bore slidable along the bar, said member being
tiltable to angularly displace the axis of said
bore from the axis of the bar to engage the edges
of the bore with the bar whereby to lock the
locking member to the bar.
_
35
, 5. A slicing machine comprising a frame, a
rotary slicing knife, a gauge plate arranged to
one‘side of the knife substantially in the cutting
plane thereof, a carriage reciprocable across the
face of the gauge plate and‘ the face of the knife,
a. substance feeder mounted on thecarriage for
movement toward the cutting plane, a spring re
siliently urging the feeder toward the cutting
plane, and locking means for locking the feeder
from movement by said spring, said locking
means comprising a bar on the carriage parallel
to the path of travel of the feeder thereon, and
a locking member secured to the feeder having a
bore slidable along the bar, and means for tilting
said member to angularly displace the axis of 50
said bore from the axis‘ of the bar to engage the
edges of the bore with the bar whereby to lock
the locking member to the bar, and means to
control the action of said tilting means com
prising an operating mechanism engageable with
the member, and means controlled by the move
ment of the carriage for operating said mecha
nism.
‘
6. A slicing machine comprising a frame, a
rotary slicing knife, a gauge plate arranged to 60
one side of the knife substantially in the cutting
bore slidable along the bar, said member being . plane thereof, a carriage reciprocable across the
tiltable to angularly displace the axis of said bore face of the gauge plate and the face‘ of the knife,
from the axis of the bar to engage the edges of
65 the bore with the bar whereby to lock the lock
ing member to the bar.
3. A slicing machine comprising a gauge mem
ber, a slicing knife, a carriage, said carriage and
said slicing knife being relatively movable trans
70 versely whereby to bring the carriage alternately
into alinement with the gauge member and the
slicing knife, a substance feeder on the carriage
movable forward toward the gauge member and
slicing knife through a given range of feeding
75 travel, means yieldingly urging the feeder for
a substance feeder mounted'on the carriage for
movement toward the cutting plane, a spring re
siliently urging the feeder toward the cutting
plane, and locking means for locking the feeder
from movement by said spring, said locking
means comprising a bar on the carriage parallel
to the path of travel of the feeder thereon, and a 70'
locking member secured to the feeder having a
bore slidable along the bar, and means for tilting
said member to angularly displace the axis of
said bore from the axis of the bar to- engage the
edges of the bore with the bar whereby to lock 75
4
2,121,35r
the locking‘ member to the bar, and means to
control the action of said tilting means com
prising a linkage connected to the member, a rail
on the carriage parallel to the bar'engageable
with said linkage in any position of the feeder
within its path of travel on. the carriage, said
rail being movable to cause the linkage to op
erate said member, and means for moving the
rail comprising cooperating abutments on the
carriage and on the frame of the machine
brought into engagement by the movement of the
carriage.
‘
'
'7. A slicing machine comprising a gauge mem
ber and a slicing knife forming a cutting plane,
15 a carriage, said carriage and said slicing knife
the carriage alternately into alinement with the
gauge member and the slicing knife, a substance
feeder on the carriage movable toward and away
from the cutting plane through a given range of
feeding travel, gravity means yieldingly urging
the feeder toward the cutting plane, locking
means operable in any position of said feeder
within said range of travel for preventing opera
tion of the feeder toward the cutting plane by
the gravity means, and means for rendering said 10
locking means ineffective to lock the feeder from
movement away from said cutting plane while
the locking means remains effective to prevent
movement of the feeder toward the cutting plane.
10. A slicing machine comprising a gauge mem
being relatively movable transversely whereby to
bring the carriage alternately into alinement with
ber and a slicing knife forming a cutting plane,
a carriage having its operating surface sloping
the gauge member and the slicing knife, a sub
stance feeder on the carriage movable toward
20 and away from the cutting plane through a given
range of feeding travel, means yieldingly urging
downwardly and forwardly toward the cutting
plane, said carriage and said slicing knife being
the feeder toward the cutting plane, locking
means operable in any position of said feeder
within said range of travel for preventing op
25 eration of said feeder toward the cutting plane
by the urging means, and means for rendering
said locking means ineffective to lock the feeder
from movement away from said cutting plane
while the locking means remains effective to pre
30 vent’ movement of the feeder toward the cutting
relatively movable transversely whereby to bring 20
the carriage alternately into alinement with the
gauge member and with the slicing knife, a sub
stance feeder mounted for movement on said
carriage, gravity means for yieldingly urging the
substance feeder longitudinally‘ forward toward 25
the cutting plane, locking means for preventing
movement of the substance feeder longitudinally
forward when the carriage is alined with the
slicing knife, means for rendering said locking
means ineffective to prevent movement of the
bring the carriage alternately into alinement with
feeder rearwardly away from the cutting plane
while the locking means is effective to prevent
forward movement of the feeder toward the cut
ting plane, and means operable when the carriage
is alined with the gauge member for disabling
the locking means whereby to permit feeder
the gauge member and with the slicing knife, a
substance feeder mounted on the’ carriage, means
tion.
yieldingly urging the substance feeder longitudi
nally forward toward the cutting plane, locking
ber, a slicing knife, a carriage, said carriage and
plane.‘
'
8. A slicing machine comprising a gauge mem
ber and a slicing knife forming a cutting plane,
a carriage, said carriage and said slicing knife
35 being relatively movable transversely whereby to
means for preventing movement of the substance
feeder longitudinally forward when the carriage
is alined with the slicing knife, means for render
ing said locking means ineffective to prevent
movement of the feeder rearwardly away from
the cutting plane while the locking means is
effective to prevent forward movement of the
feeder toward the cutting plane, and means op
erable when the carriage is alined with the
60 gauge member for disabling the locking means
whereby to permit feeder movement in either
forward or rearward direction.
9. A slicing machine comprising a gauge mem
ber and a slicing knife forming a cutting plane,
a carriage having its operating surface sloping
downwardly and forwardly toward the cutting
plane, said carriage and said slicing knife being
relatively movable transversely whereby to bring
15
movement in either forward or rearward direc
11. A slicing machine comprising a gauge mem
said slicing knife being relatively movable trans
versely whereby to bring the carriage alternately
into alinement with the gauge member and the
slicing knife, a substance feeder on the carriage
movable forward toward the gauge member and
slicing knife through a given range of feeding
travel, a spring resiliently urging the feeder for
ward, and locking means operable in any posi
tion of the feeder within said range of travel for
preventing operation of the feeder by the spring,
said spring being elongated along the path of
travel of the feeder, and being doubled upon
itself a plurality of times whereby to provide a
plurality of operative lengths to provide maxi
mum uniformity in spring pressure in all posi- 55
tions of the feeder within its path of travel.
CORNELIS F. M. VAN BERKEL.
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