U.S. patent number RE32,697 [Application Number 06/780,737] was granted by the patent office on 1988-06-21 for device and method for cutting slaughtered poultry in separate pieces.
This patent grant is currently assigned to Linco Holland Engineering B.V.. Invention is credited to Jacobus E. Hazenbroek, Edward J. Tieleman, Rudolf J. Tieleman, William L. Wallbridge.
United States Patent |
RE32,697 |
Hazenbroek , et al. |
June 21, 1988 |
Device and method for cutting slaughtered poultry in separate
pieces
Abstract
A device for cutting slaughtered poultry in separate pieces. A
bird is held by at least one radial processing device which is
movable on a frame by a driving device which is provided with a
processing arm, at the side facing the frame being provided with an
adjustment mechanism which can reorient the processing device
during the movement of the arm in a number of various positions of
rotation with respect to the arm and a blocking mechanism which can
fix the processing device in said positions of rotation, with a
deblocking mechanism for unlocking the processing device, and said
processing arm at the side facing away from the frame being
provided with a stretching mechanism for holding the bird. A number
of driven knives mounted on the frame comprise of a first knife for
cutting the breast, a second knife for cutting the first wing, a
third knife for cutting the bird lengthwise in two halves, a fourth
knife for cutting the other wing, a fifth knife for cutting the
entire leg and a sixth knife for cutting the lower legs from the
rumps.
Inventors: |
Hazenbroek; Jacobus E.
(Numansdorp, NL), Wallbridge; William L. (Sherfield,
GB), Tieleman; Rudolf J. (AW Doesburg, NL),
Tieleman; Edward J. (BM Doesburg, NL) |
Assignee: |
Linco Holland Engineering B.V.
(BM Doesburg, NL)
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Family
ID: |
19834730 |
Appl.
No.: |
06/780,737 |
Filed: |
September 26, 1985 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
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Reissue of: |
227515 |
Jan 22, 1981 |
04406037 |
Sep 27, 1983 |
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Foreign Application Priority Data
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Jan 23, 1980 [NL] |
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8000424 |
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Current U.S.
Class: |
452/163; 452/166;
452/169; 452/197 |
Current CPC
Class: |
A22C
21/0023 (20130101); A22C 21/0046 (20130101) |
Current International
Class: |
A22C
21/00 (20060101); A22C 021/00 () |
Field of
Search: |
;17/11,52 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Other References
Affidavit of Jun. 6, 1985, by Robert D. Crawford and Exhibits 1-17
attached thereto (counsel does not have the apparently missing
pages 101075, 101079-101086, 101088)..
|
Primary Examiner: Abercrombie; Willie G.
Attorney, Agent or Firm: Beveridge, DeGrandi and
Weilacher
Claims
What is claimed is:
1. An apparatus for cutting slaughtered poultry into separate
pieces, comprising,
a frame,
a plurality of cutting stations which are spaced apart,
a holding means for holding a bird, said holding means being
supported on the frame and being movable in a machine direction to
carry a bird successively through said cutting stations, said
holding means being rotatable to change the orientation of a bird
thereon with respect to the machine direction,
drive means for moving the holding means in said machine direction
to carry the holding means through said cutting stations,
reorientation means operable while the holding means is located
between successive cutting stations for unblocking the holding
means to permit rotation thereof, rotating the holding means to a
different orientation, and blocking the holding means to retain it
at said different orientation relative to the machine
direction,
each of said cutting stations having a driven knife positioned in
the path of a bird on said holding means.
2. An apparatus according to claim 1 wherein the reorientation
means is operable to place a bird at an orientation where said
knife at one cutting station cuts the breast, a knife at another
cutting station cuts the bird lengthwise into two halves, a knife
at another cutting station cuts a second wing, a knife at another
cutting station cuts the legs, and a knife at another cutting
station cuts the lower legs from the rumps.
3. An apparatus according to claim 1 wherein said reorientation
means comprises the following:
an adjusting and blocking disc which is connected to and rotatable
with said holding means, said adjusting and blocking disc having a
plurality of holes and a plurality of adjusting pins,
a blocking pin which is movable in the machine direction with the
holding means, said blocking pin being movable between an engaged
position and a retracted position where it is respectively engaged
and retracted from one of the holes in said disc,
a plurality of deblocking cam means affixed to the frame for moving
said locking pin to its retracted position,
a plurality of adjusting cam means affixed to the frame for
engaging said adjusting pins to rotate said holding means.
4. An apparatus according to claim 1 wherein the holding means
comprises the following:
a support member,
means for engaging the legs of the bird to hang the bird in front
of the support member,
means for holding the wings of the bird, and
means for holding the body of the bird at a fixed orientation in
front of the support member.
5. An apparatus according to claim 1 wherein the holding means
comprises the following:
a base member,
a back support for the body of the bird, said back support being
mounted at the front of the base member,
a pair of levers pivotally mounted on an upper portion of the base
member and having forward ends provided with U-shaped suspension
hooks for engaging the knee joints of the bird, said levers having
rear ends connected to the base member by tension springs,
a pair of pivoted support arm provided with means for engaging the
body of the bird,
a pair of pivoted wing clamps for holding the wings of a bird
and
a cam plate slidably mounted on the base member, said cam plate
having recesses engaged with the support arms for moving the
support arms in response to sliding movement of the cam plate, said
cam plate having cams for moving the wing clamps in response to
sliding movement of the cam plate.
6. An apparatus according to claim 5 wherein two said support arms
are provided with retaining plates located to project inwardly to
engage the rump of the bird, and two said support arms are provided
with transverse plate-like grippers located to engage behind the
backbone of the bird.
7. An apparatus according to claim 6 wherein said retaining plates
are adjustably supported on the support arms for movement in planes
which are perpendicular to the support arms.
8. An apparatus according to claim 5 having wing hooks affixed to
the base member in the vicinity of the wing clamps.
9. An apparatus according to claim 8 wherein two said support arms
are provided with retaining plates located to project inwardly to
engage the rump of the bird, and two said support arms are provided
with transverse plate-like grippers located to engage behind the
backbone of the bird.
10. An apparatus according to claim 9 wherein said retaining plates
are adjustably supported on the support arms for movement in planes
which are perpendicular to the support arms.
11. An apparatus according to claim 5 having a shaft which is
pivotally mounted on the frame and is connected to the support
arms,
a rod which is slidable on the base member and is connected to the
cam plate, said rod having a cam follower at one end for engaging a
rising cam on the frame,
a locking lever pivotally mounted on the base member and having
means for holding said rod and the cam plate at a given position
when a bird is on the holding means,
an unlocking cam affixed to the frame for disengaging said locking
lever from said rod to permit movement of the rod and the cam plate
from said given position.
12. An apparatus according to claim 11 wherein two said support
arms are provided with retaining plates located to project inwardly
to engage the rump of the bird, and two said support arms are
provided with transverse plate-like grippers located to engage
behind the backbone of the bird.
13. An apparatus according to claim 12 wherein said retaining
plates are adjustably supported on the support arms for movement in
planes which are perpendicular to the support arms.
14. An apparatus according to claim 12 having wing hooks affixed to
the base member in the vicinity of the wing clamps. .Iadd.
15. An apparatus for cutting slaughtered poultry into separate
pieces, comprising,
a plurality of cutting stations which are spaced apart,
a plurality of bird holding means each of which is operable to hold
a bird, each said bird holding means including a support member and
being operable to hold a bird in front of and at a fixed
orientation with respect to the support member,
each said bird holding means being movable in a machine direction
to carry a bird successively through said cutting stations, each
said bird holding means being rotatable to change the orientation
of a bird thereon with respect to the machine direction,
drive means for moving the bird holding means in said machine
direction to carry them through said cutting stations,
reorientation means operable while the bird holding means are
located between successive cutting stations for rotating the bird
holding means and the birds thereon to a different orientation
relative to the machine direction,
each of said cutting stations having a cutting knife positioned in
the path of birds on said bird holding means. .Iaddend. .Iadd.16.
Apparatus according to claim 15 wherein each bird holding means
includes means for
engaging the wings of a bird. .Iadd.17. Apparatus according to
claim 15 wherein each bird holding means includes means for
engaging the legs of a bird to suspend a bird in front of the
support member. .Iaddend. .Iadd.18. Apparatus according to claim 15
wherein each bird holding means includes first means for engaging
the legs of a bird and second means for engaging the wings of a
bird whereby a bird is stretched between the first means and the
second means. .Iaddend. .Iadd.19. Apparatus according to claim 18
wherein the means for engaging the wings of a bird includes wing
clamps which clamp the wings of the bird on said support member.
.Iaddend. .Iadd.20. Apparatus according to claim 15 wherein the
bird holding means are supported for substantially horizontal
movement through the cutting stations. .Iaddend. .Iadd.21.
Apparatus according to claim 15 wherein the reorientation means
rotate the bird holding means about substantially
horizontal axes. .Iaddend. .Iadd.22. Apparatus according to claim
15 wherein the bird holding means are supported for substantially
horizontal movement through the cutting stations, and the
reorientation means rotate the bird holding means about
substantially horizontal axes. .Iaddend. .Iadd.23. Apparatus
according to claim 15 wherein the reorientation means includes
means for rotating the bird holding means in response to movement
of the bird holding means in the machine direction. .Iaddend.
.Iadd.24. Apparatus according to claim 15 wherein each bird holding
means is operable to release cut portions of the bird after the
bird holding means has moved through the cutting stations.
.Iaddend. .Iadd.25. Apparatus according to claim 15 wherein each
bird holding means includes means for pressing against the upper
side of the bird's rumps. .Iaddend. .Iadd.26. Apparatus according
to claim 15 wherein the reorientation means is operable to place a
bird at an orientation where said knife at one cutting station cuts
the breast, a knife at another cutting station cuts the bird
lengthwise into two halves, a knife at another cutting station cuts
a second wing, a knife at another cutting station cuts the legs,
and a knife at another cutting station cuts the lower legs from the
ramps. .Iaddend.
.Iadd.27. A method of cutting slaughtered poultry into separate
pieces, said method being performed on a machine which has a
plurality of bird holders and a plurality of cutting stations, said
method including the following steps:
holding birds at fixed orientations on and with respect to said
bird holders,
moving said bird holders and the birds thereon along a path which
extends through a plurality of said cutting stations,
cutting said birds at the cutting stations while their respective
bird holders are moved therethrough, said cutting steps being
performed by moving the birds on the bird holders into contact with
cutting knives which are located at said cutting stations,
reorienting the birds when they are located between successive
cutting stations, said reorienting step being performed by rotating
the bird holders to change their orientation with respect to said
path. .Iaddend. .Iadd.28. A method according to claim 27 wherein
each of the bird holders includes a support member, leg-engaging
members for suspending a bird at a position in front of the support
member, and holding elements for holding a bird against the support
member, said cutting step being performed when a bird is positioned
against the support member and is engaged by said
holding elements and said leg-engaging members. .Iaddend. .Iadd.29.
A method according to claim 28 wherein the holding elements are
engaged with the wings of a bird. .Iaddend. .Iadd.30. A method
according to claim 27 wherein the pieces of a bird are held on the
respective bird holder until the bird holder has moved through all
said cutting stations, and said pieces are then released from the
bird holder. .Iaddend. .Iadd.31. A method according to claim 27
wherein the bird holders are moved in a horizontal path which
extends through the cutting stations. .Iaddend. .Iadd.32. A method
according to claim 27 wherein the step of reorienting the birds is
performed by rotating the bird holders about substantially
horizontal axes. .Iaddend. .Iadd.33. A method according to claim 27
wherein the bird holders are moved in a horizontal path which
extends through the cutting stations, and the step of reorienting
the birds is performed by rotating the bird holders about
substantially horizontal axes. .Iaddend. .Iadd.34. A method
according to claim 27 wherein said reorienting step is performed in
response to and during movement of the
bird holders between said cutting stations. .Iaddend. .Iadd.35. A
method according to claim 27 wherein the birds are stretched when
they are held on the bird holders. .Iaddend. .Iadd.36. A method
according to claim 35 wherein the birds are stretched between leg
engaging members and wing engaging members. .Iaddend. .Iadd.37. A
method according to claim 27 including the step of moving wing
clamps against the wings of the birds to hold the wings of the
birds on the respective support members. .Iaddend. .Iadd.38. A
method according to claim 27 including the step of pressing against
the upper side of the bird's rumps when the bird's legs are cut
from the bird. .Iaddend. .Iadd.39. A method according to claim 27
wherein the reorienting steps are performed so that a knife at one
cutting station cuts the breast, a knife at another cutting station
cuts the bird lengthwise into two halves, a knife at another
cutting station cuts a second wing, a knife at another cutting
station cuts the legs, and a knife at another cutting station cuts
the lower legs from the rump. .Iaddend.
.Iadd.40. A method of cutting slaughtered poultry into separate
pieces in a machine which has a plurality of bird holders, each of
which has a support member, a plurality of cutting stations which
are spaced apart, each of said cutting stations having a cutting
knife, said machine also having a drive means and a reorientation
means, said method including the following steps:
holding birds on the bird holders at fixed orientations with
respect to the support members,
moving birds on the bird holders in a machine direction to carry
the birds successively through said cutting stations, each said
bird holder being rotatable to change the orientation of a bird
thereon with respect to the machine direction,
operating said drive means to move the bird holders in said machine
direction to carry them through said cutting stations, said drive
means moving the birds on said bird holders in a path which brings
them into contact with the cutting knives at the cutting
stations,
using said reorientation means while the bird holders are located
between successive cutting stations to rotate the bird holders to
change the orientation of the birds thereon relative to the machine
direction. .Iaddend.
Description
.Iadd.Reference to Related Application
This is a reissue of my U.S. Pat. No. 4,406,037 which issued on
Sept. 27, 1983 for a device for cutting slaughtered poultry in
separate pieces. .Iaddend.
The present invention relates to a device for cutting slaughtered
poultry in separate pieces.
In the method followed up till now for cutting slaughtered poultry
in separate pieces this is done manually by special experts, who
use knives whether or not driven by motors. When normal knives are
used, it is hard and time-absorbing to cut slaughtered poultry in
separate pieces, whereas using driven knives is particularly
dangerous, especially when a high production is needed. In both
cases only a relatively low production per time unit can be
realised for that reason. An other objection against said known
method is, that the poultry is cut in pieces with strongly
different weight.
The object of the present invention is to remove the objections of
said known method and device.
This object is reached in that according to the invention the
device is characterized by a frame, by at least one radial
processing device movable on the frame by a driving device, which
is provided with a processing arm, at the side facing the frame
being provided with an adjustment mechanism, which can adjust the
processing device during the movement of the arm in a number of
various positions of rotation with respect to the arm and a
blocking mechanism which can fix the processing device in said
positions of rotation, with a deblocking mechanism for unlocking
the processing device, and said processing arm at the side facing
away from the frame being provided with a stretching mechanism for
the bird and by a number of driven knives mounted on the frame
consisting of a first knife for cutting the breast, a second knife
for cutting the first wing, a third knife for cutting the bird
lengthwise in two halves, a fourth knife for cutting the other
wing, a fifth knife for cutting the entire legs and a sixth knife
for cutting the lower legs from the rumps.
By application of these features the poultry can be cut into nine
pieces in a quick and safe manner with the device according to the
invention, said nine pieces each having substantially the same
weight. With the device according to the invention a production of
about 1500 birds per hour can be reached with one person for
placing the birds on the stretching mechanism.
The invention, summarized broadly, comprises a frame, a plurality
of cutting stations which are spaced apart, a holding means for
holding a bird, a drive means for moving the holding means in a
machine direction through the cutting stations, and reorientation
means for rotating the holding means between successive cutting
stations to reorient the bird relative to the machine direction.
Each of the cutting stations has a driven knife positioned in the
path of a bird on the holding means. The reorientation means is
operable while the holding means is located between successive
cutting stations to unblock the holding means to permit rotation
thereof, rotate the holding means to a different orientation, and
block the holding means to retain it at the different orientation
relative to the machine direction.
In a preferred embodiment of the device according to the invention
the blocking mechanism is provided with a number of deblocking cams
circularly fixedly mounted on the frame, a blocking pin which is
mounted on the processing arm and which is retractable by means of
the deblocking cams and can grip into a corresponding number of
holes in a blocking disc mounted on the processing arm and that the
adjustment mechanism is provided with a number of adjusting pins
mounted on a hub on the processing arm and which can engage with a
number of adjusting cams during the rotation of the processing arm,
by which the processing device can be brought in said various
positions of rotation.
By application of these features a very reliable device is obtained
which has a high capacity and nevertheless is very safe in
operation.
In a specially appropriate embodiment of the device according to
the invention the stretching mechanism is provided with a support
means for the bird, means for hanging the bird at its legs, means
for holding the wings of the bird and means for holding the body of
the bird on the support means.
According to the invention the stretching means comprises a
rectangular frame mounted on the hub of the processing arm, a back
support for the body of the bird, mounted at the front side of the
frame, a two-armed lever with U-shaped suspension hooks for the
knee joints, said lever being pivotably mounted on the upper side
of the frame and opposite the suspension hooks at the other side of
the pivot shaft connected to the frame by a tension spring,
pivotable wing clamps, two pairs of pivotable support arms for the
body of the bird, and a cam plate slidably mounted in the frame and
provided with cam recesses for operating the support arms and with
cams for operating the pivotable wing clamps.
The bird can easily and quickly be stretched with the stretching
mechanism according to the invention, whereas the bird is fixedly
stretched and is cut at the desired locations. After cutting all
portions of the bird, apart from the breast, remain on the
stretching mechanism, which can be loosened with a cam mounted on
the frame of the device and the portions of the bird fall from the
mechanism or can easily be removed therefrom respectively.
The invention will further be elucidated on the basis of the
drawings.
FIG. 1 is a side view of a processing arm with driving device.
FIG. 2 is a perspective view of the stretching mechanism.
FIG. 3 is a schematic plan view of the device according to the
invention.
FIG. 4 is a schematic front view of the blocking disc with
adjusting pins.
FIG. 5 is a cross section according to the line V--V in FIG. 4.
The FIGS. 6-9 are front views of the adjusting cams of the device
according to the invention and
FIG. 10 is a plan view of a deblocking cam.
The FIGS. 11 and 12 are a front view and side view respectively of
the back support of the stretching mechanism and
FIG. 13 is a front view of the cam plate of the stretching
mechanism.
The device according to the invention is mounted in a frame 1,
substantially comprising a central column 2 and a horizontal frame
plate 3, supported on legs 4. Centrally in the column 2 a driving
shaft 5 is supported by means of ball bearings 6, which shaft 5 is
driven by a motor (not shown) and drives the various knives 144-149
by means of a V-pulley 7, which knives are drawn in FIG. 3. These
knives are circular-saw-shaped and can otherwise be provided with
an own driving motor, for instance an electromotor or a hydraulic
motor.
In the column 2 between the central driving shaft 5 and the column
2 a hub 8 is mounted by means of conical roller bearings 9, said
hub 8 driving an upper plate 10 which is supported on the hub 8 by
a lower ring 11 and an upper ring 12 and a number of support rods
13. The hub 8 is driven by a motor with reduction mechanism 14,
driving the hub 8 via chain wheels 15 and 16 and a chain (not
shown).
On the upper plate 10 a number of processing devices 18 are
supported by means of supports 17 and 17', each of said processing
devices essentially comprising a processing arm 19, an adjustment
mechanism 20 and a stretching mechanism 21 which holds a bird and
carries it through the cutting stations where the knives 144-149
are located. In a device according to the invention realised in
practice eight processing units 18 are applied, but this number can
of course be higher or lower. The processing arm 19 is rotatably
mounted in the supports 17 by means of ball bearings 22 and 23.
Furthermore a slidable blocking pin 24 is supported in the supports
17 and 17', which is moreover guided on the processing arm 19 by
means of a guide arm 25 secured on the blocking pin 24, and a guide
ring 26. Moreover a ring 27 is mounted on the blocking pin 24,
whereas between the support 17 and the ring 27 a pressure spring 28
is mounted on the pin 24. which tries to press the pin 24 in FIG. 1
to the right.
The guide arm is at its free end provided with a rotatable roll 29,
which can cooperate with three deblocking cams 30, 31 and 32, which
are all uniform, and one deblocking cam 33 which is longer than the
first three cams. The means thereof will be elucidated hereafter.
The deblocking cams 30-33 are mounted on the lower plate 3 of the
frame 1.
On the processing arm 19 an adjusting and blocking disc 34 is
mounted (FIG. 4), in which four blocking holes 35, 36, 37 and 38
are applied,according to the number of deblocking cams 30-33. The
blocking pin 24 can engage in the four blocking holes 35-38 in the
disc 34, the first hole 35 of which corresponds to the vertical
starting position A of the processing device 18, drawn in the FIGS.
1, 2, 3 and 4, and the other holes 36, 37 and 38 subsequently
correspond to an angle of rotation of the processing device 18 over
56.5.degree., 90.degree. and 123.5.degree. from the vertical
starting position A, in clockwise direction (vide arrow B in FIG.
4), seen in radial direction from the inside.
At the radial outer side of the disc 34 two axial adjusting pins 39
and 40 are mounted, in which, starting from the vertical starting
position A in FIG. 4, the adjusting pin 39 is displaced in
clockwise direction over an angle of 165.degree. and the adjusting
pin 40 over an angle of 90.degree. in the same direction. During
the rotation of the processing arm, these adjusting pins cooperate
with fixed adjusting cams 41, 42 and 43 which are secured to the
lower plate 3 as will be further elucidated hereunder (vide the
FIGS. 3 and 6-8).
At the radial inner side of the disc 34 a crown of adjusting pins
45-52 is mounted, in which, starting from the vertical starting
position A in FIG. 4, the pin 45 is displaced in clockwise
direction over an angle of 225.degree. and the pins 45, 46, 47 etc.
each have a mutual angular distance of about 30.degree.. During the
rotation of the processing arm these adjusting pins 45-52 cooperate
with an adjusting cam 44, as will be further elucidated on the
basis of the FIGS. 3 and 9.
The device according to the invention preferably moves the birds in
a circular machine direction. The device can, seen in plan view, be
divided into four quadrants I, II, III and IV of each 90.degree.
(vide FIG. 3). In the first quadrant I the bird is preferably
placed and stretched on the stretching mechanism 21, which
comprises a means for holding the bird. In the second quadrant II,
in the third quadrant III, and in a part of the fourth quadrant IV
the slaughtered bird is cut in nine pieces of about the same
weight, whereas in the remaining part of the fourth quadrant the
stretching mechanism 21 is opened, and the loose portions of the
bird are for instance received on a conveyor belt, placed beneath
the fourth quadrant.
Hereinafter there is started from one rotatable processing arm 19,
the starting position of which at 0.degree. rotation is at the
dividing line between quadrant I and quadrant II (vide FIGS. 2, 4
and 6-9). The machine direction of movement of the processing arm
19 is indicated in the FIGS. 6-9 with arrow C.
The first deblocking cam 30 is positioned at an angle of rotation
of the processing arm 19 of about 32.degree., before which cam the
stretching mechanism 21 is still vertical (position A in FIG. 4).
The deblocking cam 30 presses the arm and therewith the locking pin
24 back from the hole 35 in the disc 24. Thereafter the adjusting
pin 39 runs into the adjustment slot 53 of the first adjusting cam
41, which is also positioned at an angle of rotation of about
32.degree., the adjusting disc 34 and therewith the processing
device 18 being rotated, clockwise over an angle of 56.5.degree. in
the direction B, seen from outside in radial direction after which
the first deblocking cam 30 releases the blocking pin 24, and the
latter grips into the second hole 36 in the disc 34.
The second deblocking cam 31 is positioned at an angle of rotation
of about 87.degree. in which the blocking pin 24 is retracted in
the above-described manner.
The second adjusting cam 42 is also positioned at an angle of
rotation of about 87.degree.. Therewith the second adjusting pins
40 runs into the adjusting slot 54 of the second adjusting cam 42
and the processing device 18 is rotated over an angle of
33.5.degree. in the direction B, after which the cam 31 releases
the pin 24 and the latter grips into the third hole 37, the
processing device 18 and the stretching mechanism 21 respectively
being rotated rotally about an angle of 90.degree. in the direction
B from the vertical starting position A.
The third deblocking cam 32 is positioned at an angle of rotation
of about 127.degree., the blocking pin 24 being retracted and the
third adjusting cam 43 being positioned at an angle of rotation of
also about 127.degree..
The second adjusting pin 40 runs into the adjusting slot 55 of the
third adjusting cam 43 and the processing device 18 is once again
rotated over an angle of 33.5.degree. in the direction of the arrow
B, after which the cam 32 releases the pin 24 and the latter grips
into the fourth hole 38 in the disc 34.
The fourth deblocking cam 33 is positioned at an angle of rotation
of about 172.degree. of the processing arm 19, the blocking pin 24
being retracted. The fourth adjusting cam 44 is also positioned at
an angle of rotation of about 172.degree., after which the last two
adjusting pins 52 and 51 of the cycle 45-52 move in a horizontal
plane to the horizontal plane 56 of the fourth adjusting cam 44,
consisting of a gear rack with seven teeth holes 57, the crown of
adjusting pins rolling-off as a pinion on the gear rack and the cam
58 urging the first adjusting pin 45 of the crown in upward
direction, The processing device 18 is thereby further rotated over
an angle of 236.5.degree. up to the starting position A, after
which the blocking pin 24 is released by the fourth deblocking cam
33 and the pin 24 grips again into the first blocking hole 35.
In FIG. 10 the configuration of the deblocking cam is drawn, in
which the cams 30, 31 and 32 are uniform, have the same size and
are constructed in straight manner. The cam 33 can be curved
according to the circle of rotation of the roller 29 on the
blocking pin 24, is longer than the cams 30, 31 and 32 and is
provided with a rising face 59 and a falling face 60 just like the
deblocking cams 30, 31 and 32.
The stretching mechanism 21 for holding a bird is mounted on a hub
61 at the end of the processing arm 19, FIG. 1. The mechanisms
described in the preceding paragraphs comprise a reorientation
means which operates when a bird is between successive cutting
stations where blades 144-149 are located. The reorientation means
unblocks the mechanism 21 to permit rotation thereof, it rotates
the mechanism 21 to place it at a different orientation relative to
the machine direction, and it then blocks the mechanism 21 to
retain it at the different orientation. The stretching mechanism 21
is provided with a rectangular frame 61', on which at the upper
side the lever 62 is mounted, which is pivotable on a shaft 63 and
which is connected to the frame 61' by means of a tension spring 64
at the side facing the column 2. The lever 62 is double and at the
other end of the two arms 62' and 62" provided with U-shaped
suspension hooks 65 and 66, in which the bird is hanged at the knee
joints.
In the vicinity of the point of engagement of the tension spring 64
the lever 62 can be provided with an adjustable stop, for instance
a screw bolt in a transverse piece between the arms 62' and 62" of
the U-shaped lever 62, said screw bolt being provided with a safety
nut and engaging the upper side of the frame 61'. Therewith the
position of the suspension hooks 65 and 66 can be adapted to the
size of the bird and the pulling force exerted on the bird by the
suspension hooks is restricted to a certain maximum.
In the frame 61' at the side in the vicinity of the processing arm
19 a shaft 67 is mounted on which two pairs of support arms 68, 69
and 70, 71 are supported. The support arms are kept at the correct
distance from each other and in the frame 61' by means of distance
sleeves 72, 73. The support arms 69, 68 are at their free ends
provided with support plates 74 and 75 resp., FIG. 2, which press
against the sides of the rumps of the bird. Furthermore in the
vicinity of the support plates 74 and 75 retaining plates 76 and 77
are mounted, which are supported by means of sleeves 78 and 79 on
the arms 68, 69 and are adjustably mounted on the arms 68 and 69 by
means of bolt 80, 81. Said retaining plates 76 and 77 press against
the upper side of the rumps of the bird such that the legs of the
bird, when they are cut with one of the knives, cannot be drawn
further upwardly by the lever 62.
The support arms 70 and 71 are at their free ends provided with
support plates 82 and 83, FIG. 2, engaging beneath the wings with
the body of the bird. In the vicinity of the support plates 82 and
83 transverse grippers 84 and 85 are mounted on the support arm 70
and 71, said grippers engaging behind the backbone of the bird. The
grippers 84, 85 are mounted on the support arms 70 and 71 in the
configuration of a lying U.
At the outer side of the frame 61' a back support 86 is mounted by
means of bolts through the holes 87 and 88, which bolts are screwed
in the frame 61', vide the FIGS. 1 and 2. According to the FIGS. 11
and 12 the back support 86 is in the centre provided with a
longitudinal slot 89, in which the knife for cutting the bird in
two halves is moving. The back support 86 is furthermore provided
with a recess 90, in which the knife for cutting the entire legs
can move, with two lateral slots 91 and 92, in which the support
arms 70, 71 can be received when stretching the bird and with a
bore 93, in which a shaft 94 for pivotable wing clamps 95 and 96
issupported, FIG. 2, which engage over the wings of the bird. These
wing clamps are mounted on sleeves 97 and 98, on which arms 99 and
100 are mounted which are provided with a longitudinal slot 101,
102, the function of which will be further elucidated
hereafter.
Furthermore in the frame 61' at the outer side a slidable rod 103
is supported in slide bearings 104 and 105, FIGS. 1 and 2, on which
rod a cam plate 106 is fixed with bolts, projecting through holes
107 and 108 in the cam plate 106 and are screwed in holes in the
rod 103 which are provided with screw thread (FIG. 13). In the
vicinity of the upper side the cam plate 106 is provided with a
pair of cam slots 109 and 110 positioned in the shape of a V,
through which the upper support arms 68 and 69 project. At the
outer side of the cam slots 109 and 110 and at the radial inner
side of the cam plate 106 a cam strip 111, 112 is outwardly
pivotable against spring force, for instnce by means of a torsion
spring which is mounted on a shaft which in turn is mounted in a
hole 113, 114, for instance with a nut on screw thread on the
shaft. In the vicinity of their other ends the cam strips 111 and
112 are provided with a pin 115, 116, which is movable in a slot
117, 118 in the cam plate 106 and pressed against the most inward
end of the slot 117, 118 by the torsion spring. In this position of
the cam strips 111 and 112 their inner edge is substantially
positioned in the extension of the outer edge of the cam slots 109
and 110 and the cam strips cover the broader portion 109' and 110'
of the cam slots 109 and 110.
In the vicinity of the lower side the cam plate 106 is provided
with a pair of cam slots 119 and 120 positioned in the shape of a
V, through which the lower support arms 70 and 71 project.
Furthermore in the side faces of the cam plate 106 a hole 121 and
122 provided with screw thread is bored, in which a bolt 123 and
124 resp. is screwed, on the head of which a nylon roller 125 and
126 resp. is rotatably supported. Said nylon rollers 125 and 126
grip into the longitudinal slots 101 and 102 in the actuating arms
99 and 100 of the pivotable wing clamps 95 and 96.
On the lower end of the slidable rod 103 on a transverse shaft 127
a pair of nylon rollers 130 and 121 are supported by means of
sleeves 128 and 129, whereas on the projecting inner end of the
transverse shaft 127 a third nylon roller or cam 132 is mounted,
FIG. 1. Furthermore on a support 133 on the frame 61' a U-shaped
lever 134 is pivotably supported on a shaft 135, which lever at the
upper side is connected to the frame 61' by a tension spring 136
and at the lower side carries an arm 137 at the one leg of the U,
in which a slot 138 is mounted which in the operative position of
the stretching mechanism 21 engages with the hole 138 over the
nylon roller or cam 132 on the transverse shaft 127 of the slidable
rod 103. The lever 135 carries an unlocking pin 139 at the other
leg of the U.
According to FIG. 3 an unlocking cam 140 in the quadrant IV and a
rising cam 141 in the quadrant I are mounted on the frame 1 of the
device, which cooperate with the unlocking pin 139 and the nylon
rollers 130 and 131 resp. at the lower side of the slidable rod
103, on which the cam plate 106 for the opeation of the pairs of
support arms 68, 69 and 70, 71 and the pivotable wing clamps 95 and
96 is mounted. At the outer side of the pivotable wing pins 95 and
96 fixed wing hooks 142 and 143 are mounted on the stretching
mechanism 21, which facilitate and improve the positioning and
stretching of a bird on the stretching mechanism 21 (FIG. 2).
Further on the frame 1 of the device six driven circular-saw-knives
144, 145, 146, 147, 148 and 149 are mounted, FIG. 3. The knives are
provided with drive motors of themselves, electrical or hydraulic,
or they are centrally driven from the V-pully 7 (FIG. 5). The
knives are mounted in supports (not drawn), which are universally
adjustable, so that each knife is optimally adjustable. The knife
144 for cutting the breast is placed on the dividing line between
the quadrant I and the quadrant II, where the angle of rotation of
the processing device 18 is held at 0.degree.. Starting from that
the second knife 145 for cutting the one wing placed at an angle of
rotation of 65.degree. in clockwise direction, the third knife 146
for cutting bird lengthwise in two halves on an angle of rotation
of 110.degree., the fourth knife 147 for cutting the other wing on
an angle of rotation of 145.degree., the fifth knife 148 for
cutting of the complete legs on an angle of rotation of 200.degree.
and the sixth knife for cutting of the underlegs of the rumps on an
angle of rotation of 220.degree..
Now the working of the device according to the invention will be
described. After that the processing arm 18 has passed the
unlocking cam 140 in the quadrant IV, and the stretching mechanism
21 is open and is emptied, a slaughtered bird is put into the
stretching mechanism 21, during the rotation of the processing arm
between the unlocking cam 140 and the locking cam 141. The bird is
hung in the suspension hooks 65 and 66 with the knee joints and is
hooked with the wings under the fixed wing hooks 142 and 143. This
can be done very quickly, so that with only two persons on the
device, one for removing the parts of the bird, which fall out of
the stretching mechanism 21 of themselves, and one for hanging a
new bird, a production of approximately 1500 birds an hour can be
reached.
When the processing arm 18 during the rotation in the arrow D in
FIG. 3 reaches the rising cam 141, the nylon rolls 130 and 131 run
on the rising cam and the rod 103 takes the cam plate with it
upwardly, by which the upper support arms 68 and 69 are being
turned inwardly by means of the cam slots 119 and 120 and the
support arms 70 and 71 are being turned inwardly by means of the
cam slots 119 and 120 and support the bird in the described way.
Also the pivotable wing clamps 95 and 96 are closed by means of the
rolls 126 and the arm 137 of the locking lever 134 is being pushed
with the hole 138 onto the roll 132 by means of the tension spring
136, by means of which the stretching mechanism is locked.
The processing device 18 passes the first knife 144 with the
stretching mechanism in vertical position A (FIG. 4), by which the
breast of the bird is being cut off. The first knife stands
substantially vertically, but inclines backwardly at an angle of
5.degree. and has a free running angle in the direction of rotation
D of 8.degree..
When passing the first deblocking cam 30 and the first adjusting
cam 41 the stretching mechanism 21 is rotated in the direction B
(FIG. 4) over an angle of 56.5.degree. in the above described way
and is blocked again.
When passing the second knife 145, that is placed in a horizontal
level and which is disposed at an angle of rotation of 65.degree.
of the processing device 18 in the direction of the arrow D, the
one wing of the bird is being cut-off.
The processing arm then rotates alongside the second deblocking cam
31 and the second adjusting cam 42 and the stretching mechanism 21
are being rotated further over an angle of 33.5.degree. in arrow
direction B, by which the stretching mechanism 21 comes to lie
horizontally.
In this horizontal position the bird is cut lengthwise in two
halves by the third knife 146, which also lies at a horizontal
level, and which is positioned at an angle of rotation of
110.degree..
Just in front of the third knife 146 a centering member for the
breast bone of the bird can be positioned on the frame 1 of the
device, which comprises two rolls, mounted on a vertically axle,
which are provided with a cone-shaped portions at the sides that
are facing each other, so that a V-shaped centering groove is
formed for the breast bone of the bird.
Then the processing arm passes the third deblocking cam 32 and the
third adjusting cam 43, by which the stretching mechanism 21 is
rotated again over an angle of 33.5.degree. in the arrow direction
B, so that the stretching mechanism is in total rotated over an
angle of 123.5.degree. in the arrow direction B.
The fourth knife 147, which also lies at a horizontal level and is
disposed on an angle of rotation of 145.degree., cuts off the other
wing of the bird.
By means of the fourth deblocking cam 33 and the fourth adjusting
cam 44 the stretching mechanism 21 is rotated further in the arrow
direction B to the position A according to FIG. 4, over an angle of
rotation of 236.5.degree. in the way as described above, by which
the stretching mechanism is again vertical.
The fifth knife 148 is inclined downwardly at an angle of rotation
of .+-.45.degree. with respect to the horizontal level and is
positioned at an angle of rotation of 200.degree. in the arrow
direction D. The fifth knife cuts off the entire legs of the
bird.
Between the fifth knife and the sixth knife 149 the stretching
mechanism keeps standing in the vertical position A and the sixth
knife 149 lies in a horizontal level, it is positioned at an angle
of rotation of 220.degree. in the arrow direction D of the
processing arm 19 and cuts off the under-legs from the rumps of the
bird.
After the sixth knife 149 the stretching mechanism 21 passes the
unlocking cam 140, by which the cam 140 pushes the unlocking pin
139 of the lever 134 (FIG. 1) upwardly, the arm 137 moves away from
the roll 132 and the rod 103 moved downwardly together with the cam
plate 106 because of their own weight, by which the support arms
68,69 and 70, 71, and also the pivotable wing pins 95, 96 are being
opened by the cam slots 109, 110 and 119, 120 and the rolls 126
respectively and the parts of the bird that are no longer held fall
out of the stretching mechanism 21, by which the under-legs are
being pushed out of the suspension hooks 65 and 66 with a
guide.
The broader parts 109' and 110' of the cam slots 109, 110 have the
purpose of making possible a widthwise variable position of the
support arms 68 and 69, so that the birds with variable weight and
size can be stretched.
Six cutting devices are used with the above described device
according to the invention, by which the bird can be cut in nine
separate pieces. Depending of the desired number of pieces one or
more cutting devices can be placed out of action of dismounting the
knife or the entire cutting device.
Further the device according to the invention can also be embodied
as an oval machine, which comprises two straight frame parts, that
are connected to each other by two semi-circular parts of the
frame, by which the processing devices 18 are being moved alongside
the straight parts and the semi-circular parts of the frame, for
instance with the aid of a driving chain. The frame of the device
could also be embodied as a straight frame, in which the processing
devices 18 can be led alongside the guides in the straight frame
with the aid of for instance a driving chain.
* * * * *