close

Вход

Забыли?

вход по аккаунту

?

Патент USA US3053138

код для вставки
Sept. 11, 1962
3,053,128
c. J, MANTHEY
SHEET CUTTING AND DELIVERY UNITS
Filed July 11, 1957
4 Sheets~$heet 1
iNVENTOR
CARLE TON J. MANTHEY
ATTORN Y
Sept. 11, 1962
c. J. MANTHEY
3,053,128
SHEET CUTTING AND DELIVERY UNITS
Filed July 11, 1957
'
I
4 Sheets—Sheet 2
///
a’
o
N
INVENTOR
CARLETON
J. MANTHEY
WW
ATTORNEY
Sept 11, 1962
3,053,128
c. J. MANTHEY
SHEET CUTTING AND DELIVERY UNITS
Filed July 11, 1957
32 2e
4 Sheets-Sheet 3
49'
s 8 l6 I4 I5
E50’I
26
37
25
34
30
33
FIGS
INVENTOR
CARLETON
J. MANTHEY'
BY
W
’
ATTORNEY
sePt- 11, 1962
c. J. MANTHEY
3,053,128
SHEET CUTTING AND DELIVERY UNITS
4 Sheets—Sheet 4
Filed July 11, 1957
FIG. 4
66
68
I9
INVENTOR
F|G_ 5
Q
CARLETON J. MANTHEY
BY
ATTORNEY
United States Patent O?fice
1
3,053,128
Patented Sept. 11, 1962
2
lar plastic material from which a web w can be with
a 053,123
drawn. Operatively mounted on a shaft 3, in spaced re
lation to the roll stand 1, is an idler roll 4 around which
the web w is trained, and similarly mounted in forward
ly spaced relation to the idler shaft 3 are feed roll shafts
srmar CUTTING ’AND DELIVERY UN1TS
Carleton J. Manthey, Cool Valley, Mo., assignor to Cen
tral States Paper & Bag (30., St. Louis, Mo., a corpora
tion of Missouri
5, 6, which support co-operating feed rollers 7, 8, be
Filed July 11, 1957, Ser. No. 671,355
11 Claims. (Cl. 83—110)
tween which the web w passes.
Positioned in forward
ly spaced relation to the idler shaft 3 is an over-speed
conveyor 9 provided at its lower end with rollers 10 sup
ported on a shaft 11 and its upper end with rollers 12
mounted on a shaft 13, the rollers 12 being somewhat
larger in diameter than the rollers 10. Trained around
the rollers 10, 12, is a series of spaced endless conveyor
belts 13'. Operatively mounted in forwardly and up
This invention relates to an apparatus for handling
sheet material and, more particularly, to machinery for
cutting predetermined sizes of plastic sheets from a sup
ply roll and conveying the sheet thus cut.
In various manufacturing processes and packaging op
erations, it is convenient, or often essential, to wrap ob
jects in large sheets of wrapping material, which is avail 15 wardly spaced relation to the shafts 5, 6, are shafts 14,
able in rolls, stacks, or bundles, and, for some reason,
15, which support co-operating over-speed carry rolls 16,
the wrapping operation must be handled manually rath
17. The over-speed carry rolls 17 are of somewhat
er than by automatic packaging machinery. The ?re
larger diameter than the rollers 10, and the belts 13' are
clay industry is an example of such industrial packaging
trained thereover so as to provide a short run 18 which
problem. Fire clay, for instance, is sold in plastic con 20 extends downwardly at an angle to the web w. Adja
dition so that it may be trowled or otherwise worked
cent the roller 12 and co-operating therewith are deliv
“on the job,” so to speak. Hence, the ?re clay, after be
ing mixed and plasticized, is passed through an extrud
ing unit to form blocks which are successively discharged
ery rollers 19 suitably supported on a shaft 20 and posi
tioned somewhat between the rollers 12., 19, and extend
ing forwardly and upwardly therefrom are guide ?ngers
from the extruding unit onto a delivery conveyor. In 25 21, the latter being provided with upper margins 21'
this condition, the blocks of ?re clay contain a high per
which extend over the end roll 22 of the roll conveyor
centage of moisture and, in order to maintain the mois
23, and for purposes presently more fully appearing.
ture content of the blocks, the blocks are usually wrapped
Positioned in rearwardly spaced relation to the roll
in polyethylene or other similar moisture impervious sheet
stand 1 is a supporting frame 24 integrally including up
material. Since the clay blocks are rather fragile, this
standing front posts 25, 26, and somewhat shorter up
must be done manually and, therefore, as the clay blocks
standing rear posts 27, 28, and welded to the upper end
travel along the delivery conveyor, the workmen pick up
of the posts 25, 26, 27, 28, is a cover plate 29‘. Also
a large polyethylene sheet from a nearby stack of sheets
welded to the posts 25, 26, 27, 28, are spaced parallel
and manually wrap each of the blocks. However, poly
side plates 30‘, 30’, which journal the shafts 3, 5, 6, 13,
ethylene and similar sheet materials are frequently diffi 35 14, 15, 20, it being understood that such journals are
cult to pick up one at a time from a stack and this re
well known in connection with such machinery and are,
sults in a slowing up of the clay block packaging opera
therefore, not described in detail. Mounted on the rear
tion. Furthermore, the size of the blocks is often
posts 27‘, 28, approximately midway of their lengths are
changed at the end of each production run, necessitating
spaced aligned bearings 31, 31', which journal a shaft
an available supply of several stacks of sheets of vary 40 32 and rigidly secured to the shaft 32, adjacent the bear
ing sizes.
ing 31, is a crank arm 33, the outer end of which slid
It is, therefore, one of the objects of the present in
ably receives a collar 34, the latter being held in position
vention to provide an apparatus for successively cutting
by means of a lock bolt 35 having a manipulating knob
plastic sheets from a continuous web withdrawn from a
36 ‘on its outer end. Projecting outwardly from the col
supply roll, and transferring the sheets thus cut along a 45 lar 34 is a pin 37 for rockably supporting one end 38
conveyor for subsequent use as wrapping material.
of a rack bar 39, the lower end of which is provided with
It is also an object of the present invention to provide
gear teeth 40. The lower end of the rack bar 39 projects
an apparatus of the type stated which permits rapid cut
through aligned openings 41, 42, in a housing 43 which
ting and conveying of the sheets as the need arises.
is rockably mounted on the shaft 6, and meshes with a
It is a further object of the present invention to pro
pinion 44 rigidly mounted on the shaft 6 within the hous
vide an apparatus of the type stated which readily per
ing 43. Also mounted on the shaft 6 adjacent the hous
mits adjustment of the size of sheets cut and conveyed.
ing 43 is an overrunning clutch 45 and a sprocket 45',
With the above and other objects in view, my inven
the latter having a drive chain 46 trained therearound
tion resides in the novel features of form, construction, 55 and operatively connected to a sprocket 47 mounted on
arrangement, and combination of parts presently de
the shaft 13. On its outer end, the shaft 6 is provided
scribed and pointed out in the claims.
with a hand-wheel 47'. It will be apparent that the
In the accompanying drawings:
clutch 45 establishes a one-way driving connection be
'FIG. 1 is a side elevational view of an apparatus for
tween the pinion 44 and over-speed conveyor 9 so that
cutting and delivering sheets constructed in accordance
upon rotation of the pinion 44 clockwise (reference be
60
with and embodying the present invention;
ing made to FIG. 1), the over-speed conveyor 9 will be
FIG. 2 is a top plan view of the apparatus;
driven and will, in turn, drive the over-speed carry roll
FIGS. 3 and 4 are fragmentary sectional views taken
ers 16, 17.
along lines 3-3 and 4-4, respectively, of FIG. 1; and
Rigidly secured to the shaft 32 is a pair of spaced
FIG. 5 is a fragmentary sectional View taken along
forwardly extending arms 48, 48’, the forward ends of
along line 5—5 of FIG. 3 and showing the cutting op
eration.
Referring now in more detail and by reference char
acters to the drawings, which illustrate a preferred em
bodiment of the present invention, A designates a cutting
and delivering apparatus including a roll stand 1 for ro
tatably supporting a roll 2 of polyethylene or other simi
65
which are provided with secondary arms 49, 49', having
a high resistance wire 50, preferably of Nichrome, extend
ing therebetween. The secondary arm 49 is provided
with a tension spring 51, one end of which is anchored
at 152 to the secondary arm 49, the other end 53 being
connected to one end of the resistance wire 50. Also
connected to the opposite ends of the resistance wire
3,053,128
4
are lead wires 1 by which the wire 51) can be connected
to a suitable source of electric current (not shown).
Upon heating of the wire 50, the slack due to expansion
Having thus described my invention, what I claim and
desire to secure by Letters Patent is:
1. A sheet cutting and delivery unit comprising co-oper
will be taken up by the spring 51.
' Bolted or otherwise secured to the under side of the
ating feed rollers for withdrawing a web of material from
cover plate 29 is a depending bracket 54 provided with
a pin 55 which rockably supports one end of an air
cylinder 56 having an outwardly projecting piston rod
than its discharge end, the intake end being in alignment
with the feed rollers, said conveyor extending upwardly
and forwardly from the feed rollers, co-operating carry
57, the outer end of which is integrally provided with
rollers operatively mounted along the conveyor in for
a source of supply, a conveyor having its intake end lower
a collar 58. Rockably secured by means of a pin 59 10 wardly spaced relationship to the feed rollers, said carry
rollers being constructed for gripping and tensioning
'to the collar 58 is a downwardly extending crank arm
the web between the feed rollers and the carry rollers
60, the lower end of which is rigidly secured to the
as it is fed by said feed rollers so that the tensioned
shaft 32. At its opposite ends, the air cylinder 56 is
portion of the web between the feed rollers and the
provided with inlet and outlet conduits 61, 62, which
are connected to a solenoid operated valve 63 mounted 15 "carry rollers is elevated above the lower end of the
conveyor, a heated wire for transversely cutting said
on the under side of the cover plate 29. The solenoid
web after a predetermined length thereof has been
valve 63 is provided with an inlet conduit 64 Which is
fed through the feed rollers, means for conveying
connected to a suitable source of compressed air (not
shown).
Electrically connected to the solenoid oper
ated valve 63 by means of lead wires 1', is a foot operated
switch 65 positioned on the ?oor below the conveyor 23.
In use, the web w is withdrawn from the roll 2 and
is trained around the idler roller 4 and, upon suitable
rotation of the hand-wheel 47', is fed between the feed
the sheet thus cut from the web, and intermittently
actuable driving means including a unidirectional clutch
having a driven member and a driving member, said
driving member being connected through a pinion to a
rack bar, said driven member being operatively con
nected to the feed rollers, and being adapted, during a
single cycle of intermittent operation, to actuate the sheet
feeding rollers through a selected amount of movement,
whereby to propel the web from a stationary position
‘rolls 7, 8. The foot switch 65 is depressed actuating the
solenoid valve 63 and causing the air to enter the cylinder
56 through the conduit 61 and move the piston rod 57
forwardly for a predetermined distance so that a desired
from the position shown in FIG. 1 to that shown in
length thereof extends along the conveyor toward the
FIG. 5, whereupon the rack bar 39 and pinion 44 will
drive the feed rollers 7, 8, the over-speed conveyor 9, 30 'carry rollers, whereby the web again becomes stationary.
2. A sheet cutting and delivery unit comprising co
and the over-speed carry rolls 16, 17, causing the web w
operating feed rollers for withdrawing a web of material
to be gripped between the carry rolls 16, 17. Simul
from a source of supply, a conveyor having its intake
taneously, the arms 48, 48', and their associated secon
end lower than its discharge end, the intake end being
dary arms 49, 49', will swing downwardly to a position
forwardly to the feed rollers 7, 8, and above the run 18 35 in alignment with the feed rollers, said conveyor extend
ing upwardly and forwardly from the feed rollers, co
so that the heated resistance wire 50 will pass through
and cut the web w.
The carry rolls 16, 17, and the
over-speed conveyor 9 are arranged so as to be driven
‘much faster than the speed at which the feed rollers
7, 8, feed the web w. Consequently, the web w is ten
sioned but is still permitted to slip on the over-speed
operating carry rollers operatively mounted along the
conveyor in forwardly spaced relationship to the feed
rollers, said carry rollers being constructed for gripping
and tensioning the web between the feed rollers and the
carry rollers as it is fed by said feed rollers so that the
tensioned portion of the web between the feed rollers
and the carry rollers is elevated above the lower end
the momentum of the fast moving over-speed conveyor
of the conveyor, said carry rollers having a periph
‘9 will carry the sheet s forwardly of the carry rolls 16,
'17. Upon repeating the cutting operation, the sheet s 45 eral speed greater than that of said feed rollers, means
‘for transversely cutting said web after a predetermined
will be delivered between the rollers 12, 19, and onto
length thereof has been fed through the feed rollers, means
the guide ?ngers 21 which will, in turn, guide the sheet
traveling faster than said feed rollers for conveying the
s onto the conveyor 23. Thus, each time a sheet sis
sheet thus cut from the web, and intermittently actuable
cut from the web w, the sheet s adjacent the rollers 12,
19, will be fed onto the conveyor 23. The clay blocks 50 driving means including a unidirectional clutch having a
driven member and a driving member, said driving mem
66 which ‘come out of a clay extruding machine 67 and
ber being connected through a pinion to a rack bar, said
pass along a roller conveyor 68 are then transferred to
driven member being operatively connected to the feed
the conveyor 23 for subsequent wrapping in the sheet s.
rollers, and being adapted, during a single cycle of in
Upon release of the foot switch 65, air enters the air
termittent operation, to actuate the sheet feeding rollers
cylinder 56 through the conduit 62 and returns the
through a selected amount of movement, whereby to
piston rod 57 to its initial position, as shown in FIG. 1.
propel the web from a stationary position forwardly for
Since the pinion 44 is drivingly connected to the feed
a predetermined distance so that a desired length thereof
rollers 8 through the over-running clutch 45, the re
extends along the conveyor toward the carry rollers,
verse rotation of the pinion 44 during the return stroke
of the piston rod 57 and rack bar 39' will not tend to 60 whereby the web again becomes stationary.
3. A sheet cutting and delivery unit comprising co
back feed the web w or cause reverse movement of the
operating feed rollers for withdrawing a web of material
over-speed conveyor 9. Should it be desired to change
from a source of supply, a conveyor having its intake
‘the length of the sheet s cut olf from the web w, it is
end lower than its discharge end, the intake end being
merely necessary to vary the length of stroke of the 65 in alignment with the feed rollers, said conveyor extend
rack bar 39 by turning the knob 36 so as to loosen the
ing upwardly and forwardly from the feed rollers, co
collar 34 and thereafter slide the collar 34 upwardly or
operating carry rollers operatively mounted along the
downwardly along the crank arm 33 and lock it in
conveyor in forwardly spaced relationship to the feed
position.
rollers, said carry rollers being constructed for gripping
It should be understood that changes and modi?cations 70 and tensioning the web between the feed rollers and the
in the form, construction, arrangement, and combination
carry rollers as it is fed by said feed rollers so that the
of the several parts of the sheet cutting and delivery
tensioned portion of the web between the feed rollers
units may be made and substituted for those herein shown
and the carry rollers is elevated above the lower end of
and described without departing from the nature and
the conveyor, said carry rollers having a peripheral speed
principle of my invention.
75 ‘greater than that of said feed rollers, means for .trans
conveyor 9.
After the web w is cut to form a sheet s,
5
3,053,128
versely cutting said web after a predetermined length
thereof has been fed through the feed rollers, intermit
6
direction, co-operating carry rollers operatively mounted
in forwardly spaced relation to the feed rollers, for grip
tently actuable driving means including a unidirectional
clutch having a driven member and a driving member,
ping the web as it is fed by said feed rollers, said carry
rollers having a peripheral speed greater than that of
said driving member being connected through a pinion 5 said feed rollers whereby to tension the portion of the
to a rack bar, said driven member being operatively con
web extending between the feed rollers and carry rollers,
nected to the feed rollers, and being adapted, during a
a heated wire extending transversely across said web in
single cycle of intermittent operation, to actuate the
the region between the feed rollers and carry rollers,
sheet feeding rollers through a selected amount of move
means for shifting the heated wire down into contact
ment, whereby to propel the web from a stationary posi
with and through the web after a predetermined length
tion forwardly for a predetermined distance so that a
thereof has been fed through the feed rollers, a conveyor
desired length thereof extends along the conveyor to
traveling faster than the speed of said web and adapted
ward the carry rollers, whereby the web again becomes
to receive the sheeet thus cut from the web, a rack and
stationary.
pinion operatively connected to the feed rollers and
4. A sheet cutting and delivery unit comprising co
heated wire, driving means operatively connecting said
operating feed rollers for withdrawing a web of material
feed rollers to said conveyor and intermittently operable
from a source of supply and propelling it in a forward
carry rollers, and means for driving said rack and pinion
direction, co-operating carry rollers operatively mounted
whereby to operate the feed rollers, carry rollers, con
in forwardly spaced relation to the feed rollers for grip
veyor, and cutting wire in timed relation, said last-named
ping the web as it is fed by said feed rollers, said carry
means being actuable to operate during a single cycle
rollers having a peripheral speed greater than that of
of intermittent operation to rotate the feed rollers a
said feed rollers whereby to tension the portion of the
selected amount of movement for propelling the web a
web extending between the feed rollers and carry rollers,
desired distance so that a desired length extends along
a heated wire extending transversely across said web in
the conveyor.
the region between the feed rollers and carry rollers, 25
7. A sheet cutting and delivery unit comprising a
means for shifting the heated wire down into contact
frame having a shaft journaled thereon, co-operating
with and through the web after a predetermined length
feed rollers within said frame for withdrawing a web
thereof has been fed through the feed rollers, a conveyor
of material from a source of supply and propelling it in
traveling faster than the speed of said web and adapted
a forward direction, co-operating carry rollers operatively
to receive the sheet thus cut from the web, said conveyor 30 mounted in forwardly spaced relation to the feed rollers
having a run extending beneath and located in down
for gripping the web as it is fed by said feed rollers,
wardly spaced relation to the line along which the web
said carry rollers having a peripheral speed greater than
is cut, and intermittently actuable driving means including
that of said feed rollers whereby to tension the portion
a unidirectional clutch having a driven member and a
of the web extending between the feed rollers and carry
driving member, said driving member being connected
rollers, a plurality of arms rigidly mounted on said shaft,
through a pinion to a rack bar, said driven member being
a cutting wire secured to said arms and extending trans
operatively connected to the feed rollers, and being adapt
versely above said web in the region between the feed
ed, during a single cycle of intermittent operation, to actu
rollers and carry rollers, means for shifting the heated
ate the sheet feeding rollers through a selected amount of
wire down into contact with and through the web after
movement, whereby to propel the web ‘from a stationary 40 a predetermined length thereof has been fed through
position forwardly for a predetermined distance so that a
said feed rollers, a conveyor traveling faster than the
desired length thereof extends along the conveyor toward
speed of said web and adapted to receive the sheet thus
the carry rollers, whereby the web again becomes sta
cut from the web, a crank arm rigidly secured to said
tionary.
shaft, a rack bar rockably pinned to said crank arm, a
5. A sheet cutting and delivery unit comprising co 45 pinion operatively connected to said feed rollers and
operating feed rollers for withdrawing a web of material
, adapted to mesh with said rack bar, and intermittently
from a source of supply and propelling it in a forward
actuable means for rotating said shaft, whereby the rack
direction, co-operating carry rollers operatively mounted
and pinion will operate the feed rollers, carry rollers,
in forwardly spaced relation to the feed rollers for grip
conveyor, and arms in timed relation, said last-named
ping the web as it is fed by said feed rollers, said carry 50 means being actuable to operate during a single cycle of
rollers having a peripheral speed greater than that of
intermittent operation to rotate the feed rollers a selected
said feed rollers whereby to tension the portion of the
amount of movement for propelling the web a desired
web extending between the feed rollers and carry rollers,
distance so that a desired length extends along the con
a heated wire extending transversely across said web in
veyor.
the region between the feed rollers and carry rollers, 55
8. A sheet cutting and delivery unit comprising a
means for shifting the heated wire down into contact
frame having a shaft journaled thereon, co-operating
with and through the web after a predetermined length
feed rollers within said frame for withdrawing a web of
thereof has been fed through the feed rollers, a conveyor
material from a source of supply and propelling it in a
traveling faster than the speed of said web and adapted
forward direction, co-operating carry rollers operatively
to receive the sheet thus cut from the web, and intermit 60 mounted in forwardly spaced relation to the feed rollers
tently actuable driving means including a unidirectional
for gripping the web as it is fed by said feed rollers,
clutch having a driven member and a driving member,
said carry rollers having a peripheral speed greater than
said driving member being connected through a pinion
that of said feed rollers whereby to tension the portion
to a rack bar, said driven member being operatively con
of the web extending between the feed rollers and carry
nected to the feed rollers, and being adapted, during a 65 rollers, a plurality of arms rigidly mounted on said shaft,
single cycle of intermittent operation, to actuate the
a cutting wire secured to said arms and extending trans
sheet feeding rollers through a selected amount of move
versely above said web in the region between the feed
ment, whereby to propel the web from a stationary posi
rollers and carry rollers, means for shifting the heated
tion forwardly for a predetermined distance so that a
wire down into contact with and through the web after
desired length thereof extends along the conveyor toward 70 a predetermined length thereof has been fed through
the carry rollers, whereby the web again becomes sta
said feed rollers, a conveyor traveling faster ‘than the
tionary.
speed of said web and adapted to receive the sheet thus
6. A sheet cutting and delivery unit comprising co
cut from the web, a crank arm rigidly secured to said
operating feed rollers for withdrawing a web of material
shaft, a rack bar rockably pinned to said crank arm, a
from a source of supply and propelling it in a forward 75 pinion operatively connected to said feed rollers and
3,053,128
8
adapted to mesh with said rack bar, a second crank arm
mounted on said shift, and intermittently actuable pneu
m'atically operated means for moving said second crank
arm, whereby the rack and pinion will operate the feed
rollers, carry rollers, conveyor, and arms in timed rela
tion, said last-named means being actuable to operate
during a single cycle of intermittent operation to rotate
the feed rollers a selected amount of movement for pro
pelling the web a desired distance so that a desired length
nected to the sheet feeding means, and being adapted, dur
ing a single cycle of intermittent operation, to actuate
the sheet feeding means through a selected amount of
movement whereby to propel the web from a stationary
position forwardly'for a predetermined distance so that
a desired length thereof extends upwardly along the con
veyor means toward the sheet delivery means whereupon
the web again becomes stationary, said conveyor means
also being operatively connected to the driving means
extends along the conveyor.
10 so as to move in the forward direction as the sheet feed
ing means moves and to continue such movement after
7 9. A sheet cutting and delivery machine comprising
sheet delivery means, sheet feeding means operatively
mounted rearwardly of and below the sheet delivery
means, said sheet feeding means being adapted to grip
a web of sheet material and propel it in a forward direc
tion toward the sheet delivery means, sheet carrying means
operatively mounted between the sheet feeding means
and sheet delivery means along the path of travel of the
web as it is propelled forwardly and being adapted to
engage the 'web in such manner as to apply tension to
the sheet feeding means has completed its selected amount
of movement, the engagement between the conveyor means
and the web being such that the conveyor means will
slip freely beneath the forwardly propelled length of the
web as the web becomes stationary, and web severing
means operatively mounted between the sheet feeding
means and the sheet carrying means and connected to
the driving means for actuation responsive thereto in
timed relation to the movement of the sheet feeding means
the portion thereof which extends between the sheet
in such manner as to engage the tensioned portion of the
feeding means and sheet carrying means, conveyor means
web and sever the forwardly extended length from the
operatively associated with and extending between the
web as a discrete sheet which then is moved forwardly
away from the stationary web by the continued movement
sheet delivery means and sheet carrying means, said con
veyor means being spaced at its rear end from the sheet 25 of the conveyor means.
feeding means and, in the portion of its length between
11. A sheet cutting and delivery machine comprising
the sheet carrying means and the sheet delivery means,
web so as to support the web, intermittently actuable
sheet delivery means, sheet feeding means operatively
mounted rearwardly of and below the sheet delivery
means, said sheet feeding means being adapted to grip
driving means operatively connected to the sheet feed
a web of sheet material and propel it in a forward direc~
ing means, and being adapted, during a single cycle of
tion toward the sheet delivery means, sheet carrying
means operatively mounted between the sheet feeding
means and sheet delivery means along the path of travel
of the web as it is propelled forwardly and being adapted
being located directly beneath the path of travel of the
intermittent operation, to actuate the sheet feeding means
through a selected amount of movement whereby to
propel the web from a stationary position forwardly for
a predetermined distance so that a desired length thereof 35 to engage the web in such manner as to apply tension
to the portion thereof which extends between the sheet
feeding means and sheet carrying means, conveyor means
sheet delivery means whereupon the web again becomes
extends upwardly along the conveyor means toward the
stationary, said conveyor means also being operatively
operatively associated with and extending between the
sheet delivery means and sheet carrying means, said
connected to the driving means so as to move in the
forward direction as the sheet feeding means moves and 40 conveyor means being spaced at its rear end from the
to continue such movement after the sheet feeding means
has completed its selected amount of movement, the en
gagement between the conveyor means and the web being
such that the conveyor means will slip freely beneath
sheet feeding means and, in the portion of its length
between the sheet carrying means and the sheet delivery
means, being located directly beneath the path of travel
of the web so as to support the web, intermittently actu
the forwardly propelled length of the web as the web 4.5 able driving means including a unidirectional clutch hav
ing a driven member and a driving member said mem
becomes stationary, and web severing means operatively
ber being connected through a pinion to a rack bar, said
mounted between the sheet feeding means and the sheet
driven member being operatively connected to the sheet
carrying means and connected to the driving means for
feeding means, and being adapted, during a single cycle
actuation responsive thereto in timed relation to the
movement of the sheet feeding means in such manner 50 of intermittent operation, to actuate the sheet feeding
as to engage the tensioned portion of the web and sever
means through a selected amount of movement whereby
the forwardly extended length from the web as a discrete
‘sheet which then is moved forwardly away from the sta—
tionary web by the continued movement of the conveyor
to propel the web from a stationary position forwardly
means;
ward the sheet delivery means whereupon the web again
10. A sheet cutting and delivery machine comprising
‘sheet delivery means, sheet feeding means operatively
mounted rearwardly of and below the sheet delivery
means, said sheet feeding means being adapted to grip
becomes stationary, said conveyor means also being oper
a web of sheet material and propel it
a forward direc
for a predetermined distance so that a desired length
thereof extends upwardly along the conveyor means to
atively connected to the driving means so as to move in
the forward direction as the sheet feeding means moves
and to continue such movement after the sheet feeding
means has completed its selected amount of movement,
the engagement between the conveyor means and the web
tion toward the sheet delivery means, sheet carrying means
being such that the conveyor means will slip freely
operatively mounted between the sheet feeding means
beneath the’ forwardly propelled length of the web as
and sheet delivery means along the path of travel of the
the web becomes stationary, and web severing means
web as it is propelled forwardly and being adapted to
engage the web in such manner as to apply tension to the
operatively mounted between the sheet feeding means and
portion thereof which extends between the sheet feeding
the sheet carrying means and connected to the driving
vmeans and sheet carrying means, conveyor means oper
means for actuation responsive thereto in timed relation
atively associated with and extending between the sheet
.to the movement of the sheet feeding means in such man
delivery means and sheet carrying means, said conveyor
ner as to engage the tensioned portion of the web and
means being spaced at its rear end from the sheet feed 70 sever the forwardly extended length from the web as a
ing means and, in the portion of its length between the
discrete sheet which then is moved forwardly away from
sheet carrying means and the sheet delivery means, be
the stationary web by the continued movement of the
ing‘located directly beneath the path of travel of the web
conveyor means.v
‘so as to support the web, intermittently actuable driving
‘(References on following page)
means including a unidirectional clutch operatively con 75
3,058,128
9
References Cited in the ?le of this patent
UNITED STATES PATENTS
497,566
828,546
1,433,672
1,462,138
1,487,663
1,748,243
1,802,968
1,810,987
1,847,767
Clarke _______________ __ May 16, 1893
Hart _________________ __ Aug. 14, 1906
Bucklin _______________ __ Oct. 31, 1922
Langston ____________ __ July 17, 1923
Langston _____________ _- Mar. 18, 1924
Peterson _____________ __ Feb. 25, 1930
Everett et a1. _________ __ Apr. 28, 1931 10
Schmitt ______________ __ June 23, 1931
Koch _______________ __ Mar. 1, 1932
10
1,946,375
2,042,829
2,045,046
2,242,645
2,261,968
2,5 38, 191
2,672,196
2,684,655
2,704,126
2,713,447
2,868,289
2,948,177
Wentjar ______________ __ Feb. 6, 1934
Carlin _______________ __ June 2,
Mudd _______________ __ June 23,
Frost ________________ __ May 20,
Matthews ____________ __ Nov. 11,
Davis _______________ __ Jan. 16,
1936
1936
1941
1941
1951
Gross et a1. __________ __ Mar. 16, 1954
Kuhnle ______________ __ July 27, 1954
Williams _____________ __ Mar. 15, 1955
Maner ______________ __ July 19, 1955
Winter ______________ .. Jan. 13, 1959
Arvidson ____________ __ Aug. 9, 1960
Документ
Категория
Без категории
Просмотров
0
Размер файла
982 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа