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t, s, 1946.
2,408,729
J.‘ w. BRACKETT
CUTTING MACHINE
5 Sheets-Sheet 1
.Fv‘iled April 14, 1944
hang-l152K
BY 7
ATTORNEYS
Oct. 8, 1946.
_ 2,408,729
J. W. BRACKETT
CUTTING MACHINE
5 Sheets-Sheet
Filed April 14, 1944
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Ila-_“F.lin;
BY
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Oct. 8, I946.
'
J}. w. BRACKETTY
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2,408,729‘
CUTTING MACHINE
Filed April 14, 1944
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oct- 8, 1945-
'.J. w.‘ BRACKETT
CUTTING MACHINE I
Filed April 14, 1944
2,408,729 Y ‘
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5 Sheets-Sheet 4
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ATTORNEYS
Oct. 8, 1946.
J. w. BRACKETT
21,498,729
CUTTING MACHINE
Filed April 14, 1944
5 Sheets-Sheet
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BY
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to the axis of the clutch ring 18 so that the clutch
part may rotate freely in one direction relatively
to the clutch ring 18 but is restrained from ro- v
part I56. These two shaft parts may be con
nected as a unit by moving the clutch member
I60 into engagement with the clutch disk I68.
A plate like frame member I10 is provided with
tation in the opposite direction so as to prevent
reverse rotation ‘of vthe feeding rollers 26. The
an opening I12 loosely receiving the; clutch mem
clutch part 80 is also provided with recesses 90
ber I60 and the disk I68.
for housing spring pressed roller elements 92.;
The bottom faces of these recesses are also tan
To the plate I10 is
- bolted a cam ring I14 having a groove I16 pro
vided with an offset run I18. This ring is of
gentially arranged so that the clutch ring 82 may
‘such internal diameter as to permit the clutch
turn freely in one direction relatively to the 10 member I60 to rotate and shift axially relatively
clutch part 80 but becomes ?xedly related thereto’
to the ring. A pin I80 is attached to the clutch
when the clutch collar is turned-in the opposite
member I60 and rides in the groove I16 to shift
the clutch member longitudinally on the shaft
direction. In Figure 1, counterclockwise rotation.
of the arm 84 imparts clockwise motion to they '
section I58 into and out of engagement with the
feeding rollers 26 for- advancing the slab, while
clutch disk I68.
~
v“clockwise rotation of the arm is consummated
Circumferential ribs I82 are provided on the
independently of the gear 66 by reason of the
clutch member I60 having‘meshing engagement
*clutch 68 so as not to- impart any reverse rotation
vrith ribs I84-on a bar I86 slidably mounted in
*to the feeding rollers 26.
» aligned openings I88 in the member I10 and the
_One end of a link 94 is pivotally connected 20. ring I14. To the bar I86 isattached a jaw I90
with-the arm 84 by a bolt 96 extending through a
engageable with teeth I92 on the face of the disk
"slot- 98 in the arm. This link is slidably guided
I68 opposite the teeth I66 in one position of the
' in bearings I00 attached to the hood I6 and is
clutch member I60. In the other position of the
" provided with a cam I02 attached to the link by
clutch member I60 the jaw I90 is clear of the
bolts I04. This cam is actuated by two rotary 25 teeth I92 to permit free rotation of the disk. The
‘cams (I06 respectively attached to shafts I08.
jaw I90 functions as a momentum arrester upon
i‘Ea'chl'shaft I 08 is provided with a gear IIO, see
disengagement of the shaft sections I56 and I58.
vI-Figure 3, meshing with a gear H2. The cam I02
A sprocket I94 is attached to the lower shaft
' is located in the plane of the rotary cams I06,
- and includes two projections II4 respectively en
I08 and connects with a chain I96 passing around
-_gaged ‘by the ‘rotary cams. Figure 1 illustrates
a relatively large sprocket I98 attached to the
section I58 of the upper shaft I08. The upper
- the upper rotary cam I06 in a position to pass
gear IIO rotates as a unit with the upper cam
‘I over the upper projection II4 to position the link
' jection II4 positioned for engagement with the
lower rotary cam I06 to slide the link' 94 to its
I06'Ibut is freely mounted on the upper shaft
I08.: The chain I96 drives the upper shaft I08,
while the intermediate gear II2 supplies power
to the upper gear IIO, the two gears I I0 being
‘ other extreme position. Thus the projections I I4
of the same size so that the two cams I06 will
- 94 in one extreme position, with the lower pro
are successively engaged by the respective ro
:‘ tary cams I06 to impart reciprocatory motion to
maintain the same relative positions at all times.
While the cams I06 rotate continuously, the
- the link 94 and oscillatory motion to the arm 84. 40 slab 38 is advanced forwardly at spaced intervals
The stroke of the linkv 94 may befvaried through
and the clutch 68 disengages during the descend
substitution of .cams having larger or smaller
ing and ascending movement of the blade I26.
throw of projection arrangements. The cam I02
At the same time, the clutch structure of Figure 6
' is detachably connected with thelink to facilitate
. iThe :lower-shaft I 88
. functions to arrest movement of the cutting blade
in its uppermost position while the slab is being
Lsuchtsubstitution. .
drivenbyr a speed re
ducer I18 operated by a shaft I20 to which is
reconnected a drive pulley I22 for connection with
‘ a motor, not shown. Vertical guides I24 are 10
" cated at ‘opposite sides of the machine for slid- .
advanced into position for cutting another strip
therefrom. Figure 7 illustrates the offset run I18
as being of relatively short length with respect
to the circumference of the groove I16. The
_;clutch structure of Figure 6 is engaged while the
ably guiding a cutting blade I26, see Figures 2, 9
pin I80 is riding in the groove I16 outside the
and 10. This knife is supported between b-ars
‘run. I18, which groove is of sufficient length to
-_ l28secured into a unitary structure by. bolts I30,
permit the strip cut from the slab to be cut into
one-of? the bars 128 being provided with two
the requisite number of pieces.
»
z?angelike bodies ‘I32 slidable inthe guides I24. 55
Means for cutting the strip 200 of Figure 1
~Tol.each.fiange .I32 vis pivotally connected the
into cubes comprises a right angular ?ange 202
'3 lower .end of an arm I 34 having its upper end
‘.,pivotally. connected at I36 with a wheel. I38 con
vistituting a crank for operating its arm I34 to
I on the blade I26.
This strip lies on a line of
horizontal rollers 204, see Figures 14 and 15. An
upper line of rollers 206 hold the strip in position
‘impart reciproc’atory motion .‘to the blade I26. 60 'on the upward stroke ‘of the ?ange 202. The
‘Each wheel I38 is attached to a rotative shaft. I 40
table I 0‘ affords support for the rollers 204, While
provided with a sprocket I42 for connectionwith
the rollers 206 are mounted in a frame 208 car
-~a‘chain I44; These chains pass, around sprockets
ried by arms 2I0 adjustably mounted on upright
; I46;keyed'to arotative shaft I48. This shaft is
supports 2I'2 through the medium of bolts 2I4
‘provided with a sprocket I 50 connected with a
extending through slots 2I6 in ‘both the supports
‘chain I52 passing'around a sprocket I54 driven
' and the . arms.
A row of rollers 2I8 is arranged
' by'the upper shaft I08.
' .
in a straight line for rotation about verticalvaxes
a‘ The'up‘per shaft I08 comprises co-axial shaft
> in a common plane; and arranged to engage one
sections I56 and-I58. In Figure 6, a clutch mem
» side of. the strip: 200. These rollers are also
~berLI60'isUsplined tothe shaftl58, as at I62, so
mounted in a frame 220 carried by arms 222 ad
thatthe clutch ‘part may be shifted longitudinal
iustably mounted on the upright supports 2I2
.~ly of the shaft but is keyed ‘for rotationthere
‘through the medium of bolts - 224 vextending
with.‘ One face of the member I60 is provided
through the slots 2 I 6 in'the supports'2 I 2 and slots
with teeth I64 engageable with teeth I66 on one
.226 in the arms 222.
ifaceof aclutch disk I68 attachedto' the shaft 15. . As the material is advanced intermittently, the
2,408,729
5
knife I26 reciprocates and severs a strip there
from which has been designated as 200. The
horizontal rollers then feed the severed strip
laterally under the angular portion of the blade
and the knife and the angular blade portion vcon
tinuously reciprocate whereupon the angular
blade portion severs into small sections the later
ally fed strip.
"
In Figures 14 and 15 ahead 228 is provided
6
The greater length of the slab is supported on
the conveyor 20, the rolls 26 and 28. The upper
rolls are adjustable so that the slab may be
formed to the desired thickness. The conveyor
20 operates to support the slab for easy move
ment and to move the 'slab material uniformly
throughout its entire width, because of the pins
24. The rolls 34 are preferably ribbed longitu
dinally and are relatively heavy to perform the
with pins 230 arranged to be projected into the 10 bulk of the pressing action.
Without further elaboration, the foregoing will
body of the strip 200 for advancing the strip step
so fully explain my invention. that others may,
by step to be severed by the ?ange 202. This
by applying current knowledge, readily adapt the
head is slidably guided by a bar 232 slidable in a
bearing 234 and reciprocated through the 'me
dium of a link 236. This link is provided with a 15
slot 238 for the reception of a pin 240 carried
by the bar 232. The link 236 is pivotally con
nected intermediate its ends, as at 242, with the
table l0. A rotary cam 244 actuates the link for
positively pivoting the same to the full line posi
tion of Figure 15. As the end 246 of the, link
same for use under various conditions of service.
I claim:
1. In a machine as described, the combination
of means for intermittently advancing a body of
nlastic material. means for pressing the mate
rial into a slab of predetermined thickness, a
knife comprising a straight blade and an angu
lar blade element attached thereto, means for
imparting lateral movement to successive strips
cut from the material ‘by saidstraight blade to
bring successive strips underneath the angular
tion for retracting the head 228 sufficiently far
25 blade element to be cut into pieces of predeter
to bring the pins 230 clear of the strip.
,
passes over the corner 248 on the cam. a tension
spring 250 snaps the link to the dotted line posi- '
mined size, means for actuating the knife. and
means for actuating said advancing means in
timed sequence with said knife.
table Hi. This guide is slotted at 256 to provide
2. In a- machine as describedthe combination
accommodation for a lateral projection 258 en
gageable with the head 228 to afford additional 30 of means for intermittently advancing a body of
material to be cut. pressure rollers reducing the
support therefor when the strip is being pushed
material to a predetermined thickness. a ver
underneath the ?ange 202. A bearing 260 is
tically reciprocating knife blade and an angular
mounted on the table I0 to afford additional sup
blade thereon. means for laterally moving a sev
port'for the bar 252. To one face of the bar 252
The bearing 234 is attached to one end of a
bar 252 slida‘ble in a guide 254 mounted on the
ered strip of material in the path of movement
is bolted a plate 262 through the medium of bolts
of the angular blade to cut the strip into small
264. This plate is provided with two projections
sections of predetermined size, means for remov
266 and 268 respectively engageable by cams 210
ing the sections from the angular blade, and a
and 212. Shafts 214. 216 and 218 are connected
with the cams 244, 210 and 212 and are rotatably 40 container receiving the removed section.
3. In a machine as described the combination
journaled in the table l0. Gears 280 are respec
of means for intermittently advancing a body of
tively attached to the shafts and mesh to impart
material to be cut. pressure rollers reducing the
rotation to the cams. When viewing Figure 15,
the cam 244 rotates counterclockwise. the cam
210 turns clockwise. while the cam 212 rotates
counterclockwise.
counterclockwise rotation of
the cam 212 shifts the bar 252 to the left for im
parting a feeding stroke to the head 228 and the
pins 230. As the piece is cut from the strip 200,
the cam 210 is brought into engagement with the
projection 266 for moving the bar 252 to the right
to bring the pins 230 to a position inwardly of the
severed end of the strip. The cam 244 operates
material to a predetermined thickness, a ver
tically reciprocating knife blade and an angular
blade portion located at one end thereof, means
for laterally moving a'severed strip of material
in the path of movement of the angular blade to
cut the strip into small sections, means for re
moving the strip from the angular blade, and a
container receiving the removed sections.
4. In a machine as described the combination
of means for intermittently advancing a body of
material to be cut, pressure rollers reducing the
material to a predetermined thickness, a ver
in timed sequence with the action of the cams
210 and 212 so as to impart reciprocatory motion
to the bar 232 at the proper time.
, 55 tically reciprocating knife and an angular blade
thereon, a roller conveyor for moving a severed
To the shaft 218 is attached a bevel gear 282
portion of the material laterally in the path of
meshing with a bevel gear 284 mounted on a
movement of the angular blade to cut the sev
shaft 286 provided with a sprocket 288 driving a
ered portion into small pieces, means for re
chain 290 passing around a sprocket 292 attached
60 moving the pieces from the angular blade, and
to the shaft I48.
a container receiving the removed pieces.
Pieces severed by the ?ange 202 are pushed
5. In a machine as described the combination
therefrom in the event of adherence through the
of means for intermittently advancing a body of
medium of a knocker 294 attached to a sprocket
296, see Figure 8, which sprocket is rotatably 65 material to be cut. pressure rollers reducing the
material to a predetermined thickness, a ver
mounted on one of the guides I24, see Figure 2,
tically reciprocating knife having an end ?ange
and driven by a chain 298. This chain passes
forming an angular rblade portion, a roller con
around a sprocket 300 attached to the shaft 286.
veyor for moving a severed strip of material lat
This knocker rotates in a counterclockwise di
erally in the path of movement of the angular
rection when viewing Figure 8 to remove the
70 blade portion to cut the severed strip into small
piece 302 from the ?ange 202 and the short end
pieces, means for removing the pieces from the
length 304 of the blade I26. Both the blade and
angular blade portion, and a container receivmg
the ?ange are preferably toothed along. their
the removed pieces.
lower edges, as at 306. The cutting edges will of
course depend upon the nature of the material 75
JESSE W. BRACKETT.
being cut.
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