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Патент USA US3100437

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Aug. 13, 1963
Filed N_ov. 7. 1960
United States Patent() ” ICC
Aug. 13, 1963
draw bar is actuating a double armed lever the ends of
which each control a feed roller arrangement.
¿WaltenLimhergen Hambnrg-Poppenhnttel, Germany, as- `
non-rotatable feed element is disposed fwithin the dispens
signor ‘to Lumoprint Zindler KG., Hamburg, Ger
f `
ing device tor the second sheets of copy paper, said sfeed
element'bein-g moved> in :the same direction las the `f-eed
Filed‘Nov. 7, 1960,_Ser. N0. 67,831
` '
roller arrangement within thevdispensing' device tor the
Afirst sheets ‘of'copy paper. This feed element cooperates
priority, application Germany Nov. 13,1959
l 10 Claims;
(Cl. 95--7S)`
- _ »
` According to an especially advantageous embodiment a
on the one hand with an abutment edge, eg. a face wall »
Thisinvention relates to an apparatus tor making cop
iesby using twoV sheets of copying paper, one of which is
of the housing of the dispensing device, and on lthe other
hand with a rake pivotally engaging the top of a pile of
passed together- with the original >to be copied initially
paper sheets in such «a way that always, in initially mov
ing the feed element in a first direction, the top sheet of
through an exposure device, and thereupon together with
.the other sheet of copying paper through a developing
paper is bent upwardly by abutting said edge »and simul
taneously is drawn forwardly Ifrom beneath the rake, said
In making copies according to the -diñiusion method
top sheet lbeing pushed over the rake into a position of
readiness when the feed element is moved in a second op
the sheets of copying paper consist «of the so-called nega
tive and positivewsheets Lot paper. If already the operation
of an apparatus, into which during one-¿operating step
posite direction. This `second movement is |assisted by
the tact that the resiliency of the bent-up portion of the
three sheets vof'paper (the original andl two copying 20 sheet abutting the edge will act in a direction of .the second
papers) have to be introduced, and which possibly re
quires other manipulations yet, is rather intricate, the
operation is rendered more diñicul-t yet by the fact that
the negative paper is 'light sensitive. Therefore this
sheet of paper must be removed quickly from a con
This second movement corresponding to -a return move
ment of the hand lever maybe lleft to the operator having
to rnove the hand lever for one actuation
lboth direc
25 tions. Preferably however the hand «lever is connected
with l'a spring movingfthe hand lever back automatically.
In the position of >readiness in front of the developing
tainer `and -introduced into the apparatus, «and at the
same time it must Ibe aligned at least with the original
too. '
'Ilús‘tnanipulation requires relatively great skill, and in
spite of it spoilage cannot be -avoided with certainty.
-For >storing particularly light sensitive paper it is
device transport means must -be provided which will take
care of further .transporting the paper, but which> must
l30 also provide tor a stopped position of .the sheet of paper
in its position of readiness. . This transporting means
ïknown to use sheet `dispensing containers out of ' which
these sheets of paper-may be -transported by means of a`
may be' formed iby pairs of rollers which will> enga-ge the
sheet of copying‘paper, and which is driven inexact tim
handlever anda mechanism arranged'within the housing
ing, or the transporting means may preferably be formed
ot the dispensing-container. rIlhese ydispensing contain 35 by acurved transporting path and at least onetransporting
roller which will be ’engaged Kby the sheet of paper, due to
ers pare with respect :to the exposure device separate
its inherent resiliency when >it is bent inpassing the curved
means, «and therefore always »a certain transporting path
transporting path.
is required to transfer'the negative sheet of paper to» the
A preferred embodiment according 'to the invention
apparatus `for making copies.
. One'obiect ot the invention is to provide an apparatus 40 provides for an arrangement of thesheet dispensing de
vices in a superimposed position below an apparatus for
forv making copies lin which the Vdisadvantages of the
making copies. In this it is preferred to provide a stag
known devices are avoided, which is simple to manu- gered arrangement in which the upwardly facing exposed
facture and which is easy to operate without any especial
Yportion of the lower forwardly projecting sheet dispenser
expenditure, and in particular without complicating the
problem is solved according to the invention in
that'lior each one lof the diÍTerentsheets lof paper a dis
pensing device is provided, both dispensing devices being
is forming a lid for dispensing the sheet of paper which
has to 'be fed into the apparatus together with the original
to be copied.
Additional ‘advantages _and features'of .the invention
coupled in such a way that vthe second sheet of copying
will become evident from the following'descript-ion of one
paper is pushed to the entrance of the developing device n
embodiment, shown >by way ot example only in the at
by «the extraction «ot the first sheet of copying paper.
tached drawing.
By means of this arrangement only one actuation i-s re
quiredk tor operating two sheet dispensing devices and,
rIfhe drawing shows a sectional side view Vof an appa
- ratus in accordance with the invention.
Below an apparatus denominated in its entirety with
associated apparatus for making copies may lbe actuated 55 the reference numeral l1, comprising within a housing an
like` 4'an apparatus using »only one sheet of copy; paper ' y’ exposure device» 2 `and a diffusion developing device 3,
»even though two sheets of copy paper Vare being‘fed, the
which, if desired, may additionallybe readily rachieved
kin a very ‘advantageous manner with the same apparatus.
there are provided two functionally combined lsheet dis
`pensi-ngk devices 4, 5. The sheet ‘dispensing device 5
According to a preferred embodiment the ,handv lever 60 which, if a diffusion developing device 3 is used, con
tains the positive Vsheets of paper, partly extends into the
housing 6 of the‘apparatus 1, ie. it is disposed vat least
nected with a corresponding feed noller arnangementby
for dispensing the fu‘st sheet of copy paper is also con
means of lwhich the `second sheet of copy paper is pushed
_ with its rearward end position above the bottom plate '7
of the apparatus. rl'ihe sheet‘dispensing device 4 serves
in the illustrated embodiment to receive a stack of nega
in la position Áof- readiness. Suitably the connection be-v
tween the hand lever and the feed roller arrangement tor 65 tive sheets of paper. The housing 8( of the sheet dispens
_the second sheet ot copy paper provides. tor a reverse
movement with respect tothe direction of dispense .of the
4first sheet of copy paper, so that bot-h sheets ot copy
ing device `4 is arranged at least partly below the housing
plate 7 .and between .the legs 9, 9’ of the apparatus.
Both sheet dispensing devices project beyond the ap
paper are dispensedV in opposite directions. ,
paratus 1 at its operating side. The bottom plate 7 needs
, rillte reversal of movement may tor example lbe achieved 70 not extend over the same length. As may be seen inthe
in such a manner that the hand lever having the form of a
drawing ‘a staggered arrangement is preferred, being such’
that the housing S of the sheet dispensing device 4 is pr`o~ .
jecting forwardly beyond :the container 10 of the sheet
dispensing device 5, the exposed part of which may have
an open top. By -means of this a step-like -arrangement
Ais formed. 4It should be noticed however that according
to the invention the sheet dispensing device 5 may also be
|bottom plate '7. A pivoting'lever 3d corresponding to
the pivoting lever 19 is mounted rotatably on the legs
28, a feed element 31 being arranged at the free end of .
the pivoting lever 30. This feedelement 31 is shownV
provided with a top cover.
The sheet dispensing device 4 supports the stack 11 of
. negative' sheets of paper on its bottom. `
device 5 above the stack 29 of the sheets of positive
The legs 28 are ydisposed laterally of the stacks
11, 29 and are extending through yslots provided in the
forward end
in the drawing to be cylindrical, but is arranged' noxi
rotatably on the pivoting lever 30. The entire circum
is provided with a curved upwardly extending guide sur 10 ference of the feed element 31 `is» provided with a cover
face 12 `which in ïdispensing‘will guide theforward ends
ing 32 having good frictional characteristics.
Below the pivoting lever 30,'Which preferably is formed i
by a U-shaped lstirrup, the leg or legs of which are dis
posed above the side walls of the fbox 'for the stack of ' i.
rangement of the sheet dispensing devices. The surface
A13 is formed by a lid which is shown at 1-4 in its _open 15 paper sheets 29, supporting means, preferably formed>
Iby a roll 74, are arranged ¿in such ia way, that .the feed
position. Thus the -lid 13 covers the dispensing opening
element 31 is lifted off, or the engaging pressure respec
of the housing 8 of the lsheet dispensing device 4 in a light
tively is relieved Ifrom the stack 29 when the feed ele
»proof manner and is ~only opened when a sheet of paper
ment is in its inward position, as shown vin full lines.
is passed out.
This is achieved in connection with the supporting means
A hand lever vin form of a draw bar 15 is serving to
74 by a declined arrangement of the pivoting lever ,39, or
actuate the sheet dispensing device 4, said hand lever
the pivoting llever arm respectively, toward the feed eleé
Vbeing guided longitudinally o-n one lor both side walls of
ment 31, the pivot point 75 Ibeing arranged in such a
the housing Sfor example, in bearing bushings 16, 17. A
of the sheets to thel‘surface 13 of the housing sur
face 13 being exposed upwardly bythe staggered ar
bridge 1,8 arranged within the housing and extending
height that the ‘arm of the stirrup-likeY pivoting lever 30
across the stack of sheets is fixed to -one or both arms of 25 moves in its retracted position on top of the supporting
-the draw bar 15.A Pivotally attached to this bridge 18 is a
pivoting lever .19 which is carrying a feed roller 20 at its
-free end facing the dispensing opening. This feed roller
20 engages with the weight of this arrangement, formed
means 74 thereby lifting the feed element, while upon .
forward movement it will move away from the support~
ing means 74. The same yeffect would 'be attained if for
example -a wedge-like engaging Vsurface 'would bear
by the feed roller 20 :and the pivoting lever 19, on the top 30 ranged on the Ilower iside of the pivoting «lever 30 in
such ak manner that the wedge-like surface would be
sheet. It should be noted however that, according to a
moved in engaging contact on the supporting means 74.
V.preferred embodiment, the pivot point is selected at a lo
Y The face lwall of the housing 10 is defining the forward
cation that -the draw bar 1-9 is declining somewhat to
end 0f the stack 29. This face wall extends over the
wards the end carrying the roller.
>The roller is rotatable only in the direction indicated 35 height of the stack. A pivotally arranged rake 33 is rest
mg on the rear endof the stack .29. This pivotal rake is
by the :arrow 22 and is blocked against rotation in the
hingedly connected at 34 with a guide path 35 for a posi-V
opposite direction. Therefore, if the draw bar 15 is pulled
tive sheet of paper. It should be noted that it is impor
forwardly the roller cannot rotate but takes the top sheet
of .paper- along, due to the fric-tional force caused by the
the stack 29 extend at least below the
`pressure of the weight. If the draw bar 15 is returned, 40 ra e
either by action fof the operator, or by the force of'spring,
When the draw 4bar 15 is actuatedrthe feed element 31
is moved to the position 36shown in dashed lines. By>
the roller may rotate, ie. it may return over ythe pile of
means of this, 4initially the Ifeed element is brought into
sheets> substantially without friction, so that no feeding
engagement with _the top sheet of paper which thereby
action is exerted on the top sheet.
will 'be taken along if the movement is continued and, as
It may he seen fromrthe drawing that within the cir
cumferential surface of the roller 20 an -axially extending
shown yat 37, will thereby be -bent -upwardly caused by
abutting against the face wall of the housing 10. >The
strip 23 is provided consisting of a material having good
length `0f the path of movement, or the dimensioning of
frictional lcharacteristics. This strip 23 extends radially
the parts respectively, is such that the rear edge of the
beyond the circumference of the roller 20. 'Ilhe adjust
ment of the roller 20 is such that the strip 23 will he 50 top sheet of paper, which is bent upwardly at its front
edge, as shown at 37, is pulled forwardly Afree from fbelow
directed obliquely downwardly in the starting position
the rake 33. Upon return movement of the draw bar 15,
of .the advance movement, thus acting «directly upon the
uppermost sheet of paper when the 'draw bar is actuated.
and therewith of the |feed element 31, the top sheet of
paper 1s taken along, this movement -being assisted by
`In an arrangement with such a strip 23 the circumference
of the roller is dimensioned with respect to the path of 55 the *stress inherent in thebent portion 37. In its re-`
tracted position the feed element is lifted, as already de- «
>movement of .the draw’bar 15 in such a manner that the
scribed. As the rake 33 is resting already with its sharp
return movement from the position 24 shown in dashed
edged end 38 on the next sheet `of the stack after the
lines to the starting position shown in full lines will cause
an angular movement of the roller 20 about 360° so tha 60 top sheet has been advanced, the rear edge- of the top
the strip 28 will return to its initial position.
Furthermore a cam slide 25 having a rounded cam
surface 26 at its `forward end is mounted on at least one
sheet will move upon the return movement of the ifeed '
element 31 onto the upper side of the rake 33 so that
thls Isheet of paper is moved into a position yof readiness
1n front of the developing device 3 on the` guide path 35.
Due to the fact that the 'feed element 31 is lifted free
with an actuating lever 27 for the lid 13, 14. When the
cam surface 26 engages the ‘actuating lever 27 which 65 from the stack in its starting position, the little frictional
forces of the elements acting on the sheet of paper will
‘ extends into the lhousing 8 the lid 13 will be raised into
sufñce to advance the sheet of paper.
its position 14 shown in dashed lines. Upon returning
l The arrangement for moving the sheet'into its posi
.the draw bar 15 and therewith the cam slide 25 the lid
tion of readiness comprises the guide path 35 with the
Nwill fall„\preferab1y by gravity, into the closed position.
The cam surface 26 of the cam slide -25 is adjusted in 70 _curved portions 39, 40. Within these portions transport
ang rollers 41, 42 are arranged with spaced relation to the
such away that the lid will open automatically when the
guide path for rotating movement in the direction indi
top sheet of paper 7‘3 is moved through the dispensing
cated Iby the arrows. The arrangement is such that the
Legs 28 are extending from the bridge 18 through the
top sheet of paper is moved through the curved portion
v ~lbottom plate 7 of the housing 6 into the sheet _dispensing 75 39 already, when rit is taken -along by the feed element
arm of Ithe draw bar 15'.’ This cam surface 26 cooperates
31 lon its return movement. _Due (to its resiliency the
iirst land said second copy papers out of said housing, a
first sheet dispensing means arranged on said housing
`adapted to receive a stack of said second sheets .of copy
paper, second ‘guide means extending between said iirst
sheet dispensing means and said inlet Vto said -second proc- ‘
sheet of, paper will4 contact the roller 41, thereby being
advanced-»to Ithe guide path-35'.> The sheet of paper will
move through the curved portion 40,*un`til it engages
an ¿abutment 43 provided in the -feed path tothe bath of
the'jdeveloping device. 1 The strongly curved portion 40
ensures a relatively great component-of advance to be
essing lmeans-for >guidingone of said second sheets of
copy paper dispensed by said first sheet dispensing means
`exerted onl the sheet of paper, but >at -the same'time allow
l :to said inlet of said second processing means, second sheet
ing, kdue to the‘space between the guide path'35` and the
` ,-dispensingmeans «arranged on said housing adapted to
transporting rollers 41,42, .free rotation of the rollers
relative the sheet of paper, which is stopped on the abut
receive a stack of saidfirst'sheets of copy paper, first feed
vmeans for removing one of said first sheets of copy pape-r
outofsaid second sheet dispensing means, second feed
ment 43. ' When the abutment 43 isv released, as shall
be described followingly, the component-»of advance be
comeseiïective ‘and the sheetof positive paper is» moved
into the developing device with :a rate determined by the
speed of the roller `42.
l.means arranged within said first sheet dispensing means
y for feeding one of -said second sheets of copy paper to
said second guide means, said first and said second feed
means being drívingly interconnected so that upon re
, `The abutment 43 comprises. an actuating rod 45 guided
on rolls 55, 56 for reciprocating movement, `as indicated
’by the arrow 44, said actuating rod 45 being provided
vnwith an abutment 146 lat one end. This abutment, for
example, cooperates with a pin 47 mounted on la pivotal
moval of one of said iirst sheets ofy copy paper out of said
second sheet dispensing means one of said second sheets
of copy paper -will be removed out of said first sheet dis
pensing means and fed to said second guide means, com
mon actuating means for said iirst land second feed means
segment 48 which is arranged Within the housing 6. The
extending out of said housing, and guide means in one
pivotal segment is moved into Ithe illustrated position by
of said sheet dispensingmeans for yguiding said actuat
a weight 49 which is suspended on the pivotal segment 48.
A rotating lever 50‘ is connected,
the pivotal segment 25
ing means »for reciprocating movement.
48, said rotating lever controllingthe movement of the
voriginal to be copied vand «the negative sheet of paper,
which are introduced into the' apparatus Ithrough the
housing slots 51, ìS2, as they 'are passing the exposure
means are provided connected with one end with said
hand lever and with the other end with said housing, said
'spring means becomingfstressedwhen said hand lever is
moved in one direction.
device. 'Ilhe rotating lever 50v is angularly moved in de 30
pendence of the advance, particularly of the original to
be copied, into the position 53-` whereit engages an «abut
ment 54, said pivotal segment 48 beingtaken along, and
thereby the abutment 43` will be opened.
For the sake of completeness it is pointed out that a 35
source of light S7 is arranged within la housing '58 having
ia transparent exposure plate 59, and serving at .the same
2. An apparatus Vaccording to claim l, in which spring
3. An apparatus according to claim l, -in which said
hand lever is supported »for reciprocating movement on
saidsecond sheet dispensing means for said first copy
paper, -a pivoting lever is rotatably mounted on said hand
lever, yand ‘a roller is mounted on the free end of said
pivoting lever, said roller being rotatable in one direction
only and resting on the stack. of said Íirst sheets of copy
4. An lapparatus according to claim 3, in which an
Mounted on the rotating lever 50
insert strip of friction increasing material is mounted on
is la tongue 60 extending overy the exposure plate 59 and
reaching to the introduction slots. An arman-gement of 40 the circumference of said feed roller extending exi-ally
therealong, the circumference of said feed rolle-r being
rollers 61, 62 ¿and belt 63 is provided serving as Ía drive,
The original to be copied is received «above la stripper 65 , dimensioned with respect to its working stroke so as to
‘and removed through the slot 64 ont ofthe housing 6. ‘ rotate through an angle of approximately 360° when said
feed roller is returned to its ini-tial position.
r[the tongue 60, for example, is provided with a rib-like
5. An apparatus Iaccording to claim l, in which ac
abutment 66 which will be engaged by thel original to be 45
tuating means are extending Vout of said housing, and
copied as it is driven bythe belt 63, whereby the tongue
connecting means are drivingly connected with said feed
60 «and the rotating lever 50 zare moved to the position 53.
time «as .la reflector.
The stripper 65 is formed «in such a way that it will side
means for simultaneously actuating said iirst and said sec
ond feed means, said actuating means comprising a handV
wlardly extend beyond the abutment 66. The exposure
device 2 comprises la supply container 67 for the develop 50 lever «guided in one of said sheet dispensing means and
coupled with connecting means interconnecting said first
ing liquid, and sa bath container 68 provided withv two
¿and said second feed means, said connecting means being
passage ways. From ythe bath container 68 the positive
arranged for reciprocating movement within said first and
and the negative sheets of paper rare moved viaithe guide
said second sheet dispensing mean-s, said second sheet
suriaoe 69 land la pair’of squeezing and transporting roll
ers 70, 71 toward the exit slot 72 through which .they are 55 dispensing means being 'arranged within a housing, the
moved »ont ofthe apparatus.
What I claim is:
sheet dispensing end of which 'having closure means ar
ranged lthereon =adapted to be opened, coupling means the
1. An apparatus for making copies by using a first and
cooperating parts of which being mounted on the one hand
la second sheet of copying paper, said iirst sheet ci copy
on said housing closure means and on the other hand on
60 said hand lever in such -a Way that said closure means will
ing paper being initially passed through first processing
be opened when one of said first sheets of copy paper is
means and then together with the other sheet of copying
removed from said second sheet dispensing means.
paper through second processing means, said »apparatus
6. An apparatus according to claim 5, in which said
comprising ‘a housing, first processing means arranged
coupling means comprise la yslide `and la pivoting lever,
within said housing, first inlet means within said housing
»through which said first copying paper together with an 65 said slide being mounted on said hand lever and being
provided with «a cam surface, said pivoting lever being
original to be copied ‘are -fed tothe inlet of said first proc
essing means, first outlet means arranged on said hous
mounted on said movable closure means, said cam sur
ing through which said original :after having passed said
face on said slide and said pivoting lever engaging each
other »upon movement of said hand lever causing said
first processing means is moved out of said housing, a
second processing mean-s »arranged within said housing, 70 closure means to 'be moved.
7, An 'apparatus [according to claim l, in which actuat
first guide means extending from said fir-st processing
ing means are provided extending out of said housing
means «to said second processing means for passi-ng said
kand connecting means being drivingly connected with said
tirst copy paper trom said first processing means to said
feed means for simultaneously ‘actuating said first and
inlet mea-ns of said second processing means, second outt
let means arranged within ,said housing ‘for moving said 75 said second feed means, said first feed means comprising;
for lsaid pivoting lever, the arrangement being such that
silieney, `thereby Ibeing moved against abutment Vmeans
arranged within said second guide means, said abutment
said pivoting lever »is rotatably mounted on said connect
ing means, said feed elem-ent is arranged on the free end
Vactuation said'rabutment mean-s may be retracted'out of
a non~rotatabie feed element, a pivoting lever, ramp means
means A‘being movably supported in such Ia Ívvay that‘u'pon
said secondl guide meansthereby allowing-,said second
_ - of said pivoting lever, and said ramp means for said'pi-vot
ing 'lever are arranged in suehìa Way that said `feed element
sheet `of copy paper retained in said _,secondfguide means
will be ,lifted` free `from. Isaid stackvof second sheets of
Éb‘y ‘said aëbntrr'rentl means to pass said second “guide lmeans
copy paper in its position of rest, but upon movement of
and to Ibe fed to> the‘inlet of said second processing means;
saidy feed means will tbe lowered into contacting engage
' 9. An'apparatus according‘wto claim" 8', -in which cou
ment with the top sheet of said stack of second sheets 10 pling means are arranged :between saidlñrst’guide means
of copy paper, rake means hingedly connected with ‘said '
and said abutment means 'insuchjja Way," that-‘sjaid-í abnt- _
second guide means the free end of said rake means rest
ingl on the top ysheet of Vsaid stack of second copy papers
ment means .will be retracted out of said `second _guide Ä
in a Zone adjacent its one end, Kand an abutment `edge
vsaid inlet of said second processing means.
provided at the opposite end of said sfheet dispensing 15
1,0. 'Ilhe- apparatus yas set forth in claim 1, in »,which said
.iirst and second feed means are movable back »and forth
along the top of said first and secon-d stacks, respectively,
»said first feed means feeding the top sheet »from said first
means against «which the facing edge of a second sheet
of copy paper will abut when said -ñrst feed means »are
actuated lfor pulling the opposite edge of said second
means when said iirst sheet'of copy paper moves into
sheet of copy paper out from Ibelow said rake means, said
stack `when Vsaid iirst and second vfeed means are moving
second sheet of copy paper will Ibend upwardly in the zone 20 in one direction, and said second feed means feeding the'
between said abutment edge and said `first feed means
>top sheet from said second stack when said first and sec->
when the latter `are actuated.
l'8. An »apparatus according to claim 1, in which the
second -feed means comprise; »a curved guide surface, at
lleast one driven transporting roller spaced-1y arranged
from said guide surface, »but journalled in the zone of
curvature causing said second sheet of copy paper to bend
when moving into said second guide means ‘and to contact
at ieast one transporting roller 'due to its inherent re
ond `feed means are moving in the `~other direction,
References cited in the s1@ >ojf this patent. Y
Y `
Limberïger _‘_____‘_;___?_____ Ian. '31, `1956
Ricord` ____ ____ __,._' .... .__ Ma'yk 17„
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