close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2403711

код для вставки
Jul1Y9, 1946-
2,403,711
J. F. EGAN
CONTROL FOR PHOTQGRAPHIC COPYING APPARATUS
Filed Oct. 2'7, 1945
JOHN F. EGAN
INVENTOR
Patented July 9, 1946
unite
2,403,711
sures , PATENT orrlcs
coarser. Fort rnoroonnrinc COPYING
’
nernna'ros
.l
Egan, Rochester, N. Y” Iassignor to East
man Kodak Company, Rochester, N. -Y., a cor
poration of New .l'ersey
Application @ctol’oer 27, 1943, Serial No. 507,793
3.8 @iaims.
((31. 88-24)
2
gagemeni. with the control member past the trail
ing edge of the document field.
A further object of the invention is the provi
sion of a timing control means comprising a'tim
ing circuit including a delayed action means and
for supervising the operation and inoperativoncss
The present invention relates to'a control for
photographic copying apparatus and, more par-'
ticularly; to. an electrical vcontrol for a photo
graphic copylngapparatus in which the document
and sensitized material are moved continuously
and in which a document operated or a control
member is‘spaced from the copy or document
of a film advancing means or a film drive con
field.
As is well known, in continuous photographic
trol circuit.
copying
,
Still another object of'the invention is the pro
machines, the, document-controlled 103 vision of a control means comprising a timingr
member for controlling ?lm movement and docu~
ment illumination should not be in the copy or
document ?eld because such controlled member
may be photographed and obscure ‘or cause un
derexposure of a portion of the document.‘ Con
sequently it is general practice to space such docu
control circuit including a delayed action means
and an illumination control means supervised by
said time control circuit.
A still further object of the invention is the
15 provision of a timing control circuit including
an electrical condenser and a document-operated
ment-operated or controlled member some dis
switch whereby engagement of a document with
tance from the copy or document field and this
a control member connects an electrical con
denser for charging, and disengagement of the
requires some delayed action means between the
document-controlled member and the film drive 20 document from the control member connects said
so that movement of the film is initiated just as
electrical condenser for discharge.
Another objectof the invention is the provision
the leading edge of the document enters the docu
ment field and is interrupted just as the trailing
of a timing control circuit including an electrical
condenser and a charging resistance, vwhich re
sistance is short-circuited after a predetermined
edge of the document leaves the document ?eld.
It is also desirable and common practice to have
the document illuminating means controlledin
charging of the condenser, so that the condenser
is fully charged to begin its discharge and its dis
charging characteristic is uniform.
A further object of the invention is the provi
sion of a preliminary illuminating circuit i’or
the same manner. Heretolore. such delayed ac
tion means has been'oi a mechanical type with
consequent complication and expense in con
struction and maintenance. Rtrthermore, such
mechanical delayed action means has not been
as capable of regulation or adjustment as- has
been found to be the case with the control means
of the invention.
The primary object of the invention is the pro
heating one or more light sources of an illuminat
lng means during the interval for the leading edge
of a document to move the leading edge or" the
document ?eld, whereupon said preliminary il
w luminating circuit is shunted and said light
sources are. fully energized.
vision of a delayed action control means for a
photographic copying» apparatus having a docu
ment ?eld and a photographic field, and includ
ing a timing control means responsive to the
, Still another object of the invention is the pro~
presence of a document in said document field
and for controlling film advancing means and
document illuminating means so that they be
come e?ective just as the leading edge of a docu
ment enters the document field and are rendered
inoperative just as the trailing edge of the docu 45
ment leaves said document ?eld.
,
Another object of the invention'is the provision
of a timing control means including an electrical
visionin a timing control means of an interme
diate circuit between the timing control circuit
and illuminating control circuit, so that inter
ruption of the illuminating control circuit is de
layed and the clutch assembly of the film ad
vancing means is disengaged.
Other and further objects of the invention will
be suggested to those skilled in the art by the
I disclosure which follows.
'
The aforementioned and other objects of the
invention are embodied in a control means in
condenser which has a charging rate correspond
cluding a timing circuit, a ?lm drive control cir
ing to the interval required for the leading edge 50 cuit and illumination-control means including a
preliminary illuminating circuit and a main il
of a, document to move from engagement with the
controlled member to the leading edge of the
lumination control circuit. Said timing control
document ?eld and having a _ discharging rate
circuit includes a delayed action means such as
corresponding to the interval required for the
an electrical condenser, and a document-oper
trailing edge of the document to move from en
ated switch for rendering the timing circuit ef
2,408,711
3
fective after proper intervals for operation and
interruption of the film driving means. When
said delayed action means is in the form of an
electrical condenser the timing control circuit
may also include a relay coil in parallel with said
condenser, a charging resistance and a discharg~
the apparatus. Said drum I! may be rotatably
driven in any convenient manner, and is shown
as carrying a pulley i2 encircled by a belt II
whichalso encircles a pulley H on the shaft of
an electrical motor l5.
~
The advancing means of the copying apparatus
is arranged to operate in synchronism with the
feeding means and is for the purpose of moving
ing resistance for determining the charging and
discharging rates of the condenser and/or a shunt
a ?lm through the photographic field of the ap
circuit for shorting the charging resistance after
the relay coil is energized. Said ?lm drive con ill paratus or gate of the copying camera. As dia
grammatically illustrated in ‘Fig. l, the copying
trol circuit may include a solenoid adapted when
camera comprises a casing 18 carrying an ob—
energized to render the clutch assembly of a ?lm
jective ii and enclosing a supply film roll iii, a
advancing means operative and a relay switch
takeeup film roll ill and a driving roller M. The
operated by the relay coil of said timing control
film 1“ is conducted in a known manner from the
circuit. Said illumination control circuit in
supply film roll i8 over the driving roller Ill and
cludes the light source or light sources of an 11
through the focal plane of objective ii to the
luminating means and a switch operated by the
take-up film roll it. Said advancing means also
relay coil of the timing control circuit.- A pre
includes a clutch assembly having a driving mem
liminary illumination control circuit includes a
document-operated switch and a resistance for 20 her 21 and a driven member 22. Said clutch
driving member 2! may be rotated by suitable
reducing the energization of the illuminating
connections and at a. ratio determined by the
means during the interval for the leading edge
distance
between the document and photographic
of the document to move from engagement of the
?elds and by the reduction ratio of objective 11.
control member to the leading edge of the docu
ment ?eld. Said illumination control circuit 25 For instance, clutch driving member 2! may be
mounted upon a shaft 23 carrying a small diam
may also include a resistance for controlling the
ter
pulley 24 which is encircled by a belt 25 also
normal brillance of the light sources in the illu
encircling a large diameter pulley 28 on the other
minating means and/or a shunt circuit for short
end of drum Ill. The driven member 22 of the
circuiting the resistance of the preliminary illu
minatlon control circuit. An intermediate means 30 clutch assembly is arranged to move the film F
throughthe copying camera as by a shaft 21
may be provided between the timing control cir_
connected to driving roller 20. The clutch assem
cult and illumination control circuit for the pur
lily of the advancing means is preferably ar—
pose of providing sufficient opportunity for the
ranged to be moved into and out of engagement
film drive clutch assembly to become disengaged
before the illuminating means is deenerglzed. Al 35 according to the energization or deenergization
of a solenoid. Such an arrangement is conven
through the control means of the invention is
described herein with reference to a photographic _ iently obtained by use of a magnetic clutch of
standard design and which may include in its
copying apparatus of the continuous type, it is ‘
driving member 21 a solenoid, not shown, but en
to be understood that such control means may be
equally usefulfor other types of photographic 40 ergized through slip rings 28 and 29 contacted
respectively by brushes 3!! and 3 l.
copying apparatus and photographic copying
The illuminating means of the photographic
apparatus used for other purposes than copying
copying machine may also be arranged in a
documents.
'
known manner and includes one or more light
Reference is hereby made to the accompanying
sources preferably of incandescent lamps and one
drawing wherein like reference characters desig
or more re?ectors, not shown, for directing and
nate similar elements and wherein:
distributing the light in the document field. As
Hg. 1 is an illustrative perspective of the vari
apparatus: and
shown, said light sources are provided in two
banks, one a row of incandescent lamps I! lo
Fig. 2 is a wiring diagram for the timing con
trol means and various circuits thereof accord
ing to the invention.
lamps 3! arranged above and in front of the'
document field. The location and arrangement
' ous elements comprising'a Photographic copying
In the illustrated embodiment the photographic
copying apparatus comprises a feeding means. an
advancing means, an illuminating means and a
control member. An identifying assembly may
be arranged to project an image of established
data‘ to the photographic field of the copying
camera. The term "copy field" as used herein
broadly covers the document ?eld through which
the document is moved by the feeding means and
the hold of the indicis of the identifying assem
bly, and the term "document ?eld,” except as the
context otherwise permits, relates to that portion
of the copy ?eld through which a document is
cated'below and in front of the document held,
and the other bank being a row of incandescent
of such light sources may be varied as desired or ‘
required for proper illumination of the document
?eld or of a document being moved by drum ll
past transparent strip ll.
’
The document-operated control member, as
previously explained, is spaced from the document
?eld so as not to interfere with the photographic
copying process.- Such a control member may
also be constructed or designed in any convenient
manner and its speci?c form may be determined
in large part by the type of feeding means used.
For a drum type feeding means the control mem
ber may comprise a rod 34 rotatably mounted,
carrying a plurality of document engaging fingers
I! which normally contact the periphery of drum
I! but are displaced by the leading edge of a
ways, such as a rotating drum or a plurality of
pits of spaced rollers. As illustrated. the feed 70 document being moved by said drum III, and
said control member includes an arm 36 on said
in: means comprises a drum I I rotatably mount
rod 14 for operating a switch plunger 31. Those
ed and for moving a document engaging the pe
skilled in the art will recognize that the control
riphery thereof past a transparmt strip II. The
member shown and contemplated by the inven
transparent strip II or an equivalent masking
aportun'msybs consideredthedocumentneldof 75 tion is responsive to the presence of a document
being moved.
The feeding means of the photographic copy
in: machine may be provided in any of several
_ 2,403,711
6
5
in the feeding means and is spaced from the
document ?eld. Said control member is operated
'to one position by engagement of the leading edge
terruption of ?lm drive by the advancing means.
of a ‘document therewith, and returns to another
ready indicated, such timing control circuit pref—
erably includes anelectrical condenser 43. A
document-operated switch of single pole, double
and/or energization or deenergization of the
document illuminating control means.
position upon disengagement of the trailing edge
of the document from the control member.
The photographic copying apparatus may be
provided with an identifying assembly of the type.
throw type has switch terminals 44 and 45 and a
switch arm 46 arranged to be engaged by the
switch plunger 31 of the control member. Said
document-operated switch is normally in the po
sition shown in Fig. 2 with switch arm 46 in
contact with switch terminal 45. An electrical
supply line has legs 41 and 48 connected to a
constant voltage transformer 48 which is in turn
connected to a recti?er 50 preferably of the sele
nium type. A wire 51 extends from one output
terminal of recti?er 50 to switch terminal 44 and
more comprehensively illustrated and described
in Hopkins U. S. Patent 1,987,064. granted Janu
vary 8. 1935. Such an identifying assembly has
indicia provided on a stationary arcuate support
38 and/or on the periphery of a drum 39 mounted
upon a shaft 40‘. A rotating mirror 4! is driven
in a readily understood manner. not shown, by
the driven member of said clutch assembly and
directs a moving image of the stationary indicia
' of the identifying assembly into the photographic
?eld or onto the ?lm of the copying camera.
The illuminating means also includes one or more
20
tion of the indicia of the identifying assembly.
' The use of a constant voltage transformer and
25 rectifier as the source of direct current is op
tional, but most reliable operation of the timing
nate both the document field and indicia' of the
identifying assembly, but more effective control
control circuit will be obtained by the use of
) of illumination is obtained by- separate provision
a uni-directional constant voltage current as pro- '
vided thereby.
of such light sources in the manner shown herein. ~
It is well recognized that accurate control of
the ?lm drive by the document in a photographic
a wire 52 extends from switch arm 46 to one
side of condenser 43. The other side of con
denser G3 is connected by a wire 153 to one side
‘of a variable resistance 54, and the other side
of said resistance 54 is connected by a wire 55
to the other output terminal of. the recti?er 5U.
light sources for illumination of said indicia and
preferably includes a plurality of incandescent
"lamps 42 arranged for proper and even illumina
The same light source or light sources may illumi
As al
30
copying machine is absolutely necessary, because
otherwise there may be large and uneven spaces
between images on the micro?lm or there may be
overlapping of the document images on the ?lm.
T\Tor is it feasible-to place the control member at
the very edge of the document ?eld because the‘
document-engaged members of ‘such control
.member will effect the photographing of the
document. l-leretofore, the intervals required be
tween engagement or disengagement of the docu
ment with the controlled member and start or
interruption of the film drive ‘have been obtained
by comparatively complicated mechanical con
structions which are difficult to adiust for precise
timing and which are subject to wear to affect the
A master relay coil R is connected across wires
52 and 53 and in parallel with said electrical con
denser d3. Said relay coil R when energized
operates a plurality of switches, R1, R2 and R3.
but. separate relayqcoils and switches would be
the equivalent thereof. A shunt circuit for short
circuiting variable resistance 54 comprises a wire ‘
5% connected between wire 55 from ‘the recti?er 5d
and one side of relay switch R1 and a wire 5?
connected between the other side of relay switch
R1 and wire fill leading to the condenser 43. A
second variable resistance 58 has one side con
nected by a wire 59 to said wire 53 leading to
the condenser 63 and has its other side con
nected by a wire 6% to the switch terminal. 45 of
the document-operated switch.
The operation of the timing control circuit is
> time intervals. The rate of document movement
as follows: ‘When a document engages the ?ngers
required in photographic copying machines ren
ders said intervals very small and in the order
35 of’ ‘the control member, rod 34 and arm 36
are rotated to move plunger 31 which in turn
moves the switch arm 46 of the document-oper
ated switch into contact with switch terminal 44.
tory mechanical control. The basic concept of
This places the condenser 43 across the supply
the invention is the provision of electrical delayed
line and such circuit extends from leg 41 through
action means which can very readily time to small
- transformer 69 and recti?er 50, through wire 5i,
fractions of a second, which are uniform in oper 55 switch terminal 44, switch arm 46, wire 52, con
of a fractionof a second. which fact further
increases the difficulties of providing a satisfac
ation, relatively easy to adjust, and not subject
denser 43, wire 53, variableresistance 54. wire
to wear sufficient‘ to affect their function. Such
electrical delayed-action means may be provided ‘
55 and again through recti?er 50 and trans
former E39 and to leg 48 of the supply line. Thus
in any of several forms, such as interval timers,
the condenser 133 is charged at a rate deter
thermostatic switches, etc. But, preferably, ac 60 minedloy the capacity of the condenser, the value
cording to the invention, the electrical delayed
of resistance 54 and/or voltage across the output
action means is provided in the form of an elec
terminals of’ recti?er 50. Obviously, such charg
trical condenser. As will be explained herein
ing rate can be changed by variation of any of
after, the charging rate and discharging rate of
the aforementioned factors. That can be very
such an electrical condenser determine the lead 65 effectively and conveniently done merely by
ing and trailing intervals required and it is well
changing the value of said variable resistance 54.
known that such charging and discharging rates
The voltage drop across wires 52 and 53 on ac
of a condenser have ?xed and uniform character
count of the charging of condenser 43 will be
istics and canbe easily varied as by the provision
reduced or maintained below the critical voltage
70 necessary to energize relay coil R, however, as
of appropriate rsistances.
The timing control means, according to the
condenser 43 charges said voltage drop will in
invention, preferably comprises a circuit respon
crease and at a predetermined time or after an
sive to movement of the‘control member engaged
interval determined by the factors of the timing.
and disengaged by the document and which tim
control circuit, said voltage drop ,will be sum
ing control circuit determines operation and in 76 cient to energize relay col‘. R. Thus active ener
2,403,711
8
gisation of relay coil R is a relative term and
hereinafter said relay coil R will be considered
mergized only when a voltage drop equal to or
greater than its critical voltage is impressed there
.
the operativeness and inoperativeness oi th
clutch assembly of the ?lm advancing means.
The illuminating control means preferably
comprises a plurality of circuits, one for heating
the light sources during the leading interval, an
other- for energizing the light sources to normal
voltage drop less than its critical voltage is there
brilliance, and the other for delaying the de
across. The charging rate of the condenser and
energization of the light sources until after the
of the .timing control circuit is selected or ad
clutch assembly of the advancing means has had
lasted so that the interval for the voltage drop
across relay coil R to reach its critical voltage 10 an opportunity to disengage.
The preliminary illuminating circuit is for pre
is equal to the time required for the leading edge
heating the ?laments of the incandescent lamps
or a document to move from engagement with
32, 35 and 42, so that such lamps will attain full
the control member to the leading edge of the
brilliance almost immediately when the lead
document ?eld. When switch R1 is closed the
shunt circuit across variable resistance 54 is com~ 15 ing edge of the document reaches the document
field. It is not always possible to fully energize
pieted and condenser 43 is then placed directly
the light sources during the leading interval be
across
fully charged
the output
always
terminals
at theofsame
recti?er
voltage
5t and
for a.
cause reflections within the copying apparatus,
from the document drum or identifying assem
purpose to be presently explained.
When the trailing edge of a document disen~ 20 bly, may expose 0r fog the ?lm in the gate of
the copying camera. Thus the light sources are
gagea ?ngers II of the control member, the switch
preferably energized during said leading interval
plimger 31 is moved so that switch arm ‘6 en’
on and will be considered deenergized when a
below incandescence and so that no actinic light
will be re?ected onto the ?lm F before it is moved
such circuit extends from one side or condenser 25 by operation of the advancing means. Said pre
gages switch terminal 45. As a result a discharg
ing circuit for condenser 43 is established and
43 and through wire 5!, switch arnl‘ $8, switch
terminal 45, wire ‘0, variable resistance 58, wire
II and wire ‘I to the other side of condenser
43. Again the discharging rate of condenser 43
will be determined by the value of resistance 58, 30
capacity of condenser l8 and/or the line voltage.
Master relay coil R remains energized until such
time as the voltage drop across condenser l3
and across wires 52 and I! is below the critical
» energization voltage of said relay coil R. The,
liminary illuminating-control circuit comprises
primarily a document-operated switch and 9. var
iable resistance, and the main illuminating-con
trol circuit comprises a pair of relay~operated
switches closed by a relay coil in an interme
diate circuit. The preliminary and main illumi
nating~control circuits include in common the
light sources and a resistance for controlling their
full brilliance.
The lamps 32 and 33 are arranged in parallel
with a common wire 84 leading thereto. A wire
65 leads from one side of lamps, 32 to one side
of a transformer Winding 65. A wire 61 leads
interval for the voltage drop across relay coil
from the other side of lamps 33 to the other side
R to reduce for effective deenergizatlon thereof
is precisely equal to the time required for the 40 of said transformer winding 66. A wire 68 is con
.nected'to a. center tap of transformer winding 68
trailing edge of a document-to move after dis
and to one side of a variable resistance 89. The
engagement i'rom ?ngers I! of the control mem
discharging rate of condenser I! through 're
sistance II is selected or adjusted so that the
preliminary illuminating‘ circuit ‘extends from
ber to and through the document ?eld. of the
said variable resistance 69 through a second var
copying apparatus. For uniiormity of this trail_
in; interval the condenser 41 should start its dis 45 iable resistance ‘III, a wire li, a document-oper
ated switch 12 and common wire 13 to the leg
charging cycle always at the same voltage and
I! of the supply line. In a similar manner the
this objective is obtained by insuring that con
lamps 42 for illuminating the indicia of the iden
denser I8 is charged always to the same volt—
,_ age and by the expedient o! shunting the charg 50 tifying assembly are arranged in parallel. A wire
14 is connected to one side of ‘all the lamps 42.
ing resistance II by means of relay switch R1
and wires II and "I.
.
The film drive control circuit is arranged to
be completed upon energlzation of relay coil R
and to be interrupted by deenergization thereof.
Buch film drive control circuit comprises a wire
‘I connected between wire 5i and brush III of
the magnetic clutch assembly, a wire 82 ex
tending from brush 8| to one side of relay switch
R: and a wire ll extending from the other side
of relay switch R: to wire II. Clutch members
II and I! are normaliy'disengaged, but upon en
ergization of the solenoid of the magnetic clutch
or magnetically operated clutch, said clutch mem
bers II and 22 are engaged and the ?lm-advanc
A wire 15 leads from one side of one bank of
lamps 42 to one end of a transformer winding 18.
A wire 11 extends from the other side of the
other hall’ oflamps 42 to the other end of trans
former winding 16. A wire 18 has one end con
nected to the center tap of transformer winding
‘Iii and its other end connected to the variable
resistance ‘iii. For the preliminary illumination
circuit for the identifying assembly, variable re
sistance ‘I9 is in series with a second variable
resistance 80 which has its other side connected
by a wire 8i and through document-operated
switch 12 and common wire 13 to the leg 48 of the
supply line. The eii'ect of the series connections
' of variable resistances B9 and ‘Ill and of 19 and
in; means becomes operative. Whenrelay coil
III in the illuminating circuits for the document
R is‘ energized by the condenser charging cycle
?eld and indicia of identifying assembly is to re
previously described, relay switch R: is closed and
duce the voltage drop on lamps 32. 33 and 42 so
the solenoid for operating the clutch assembly of
that they cannot give oil actinic light su?lcient
the advancing means is also energized. Con 70 to expose the ?lm F in the copying camera, but
versely, when relay coil R is deenergized, relay
these resistances in series are such that the ?la
switch R: is opened. the ?lm drive circuit is
ments of said lamps 32, I3 and 42 are heated so
opened and the solenoid for operating the clutch
that they may be energized to incandescence very
assembly is dcenergised. Thus energization and
when of relay coil R directly controls 75
rapidly.
,
When master relay coil R is energized. relay
9,403,711
switch R3 is also closed to complete .an interme
diate circuit, comprising a wire '82 extending
from leg 41 of the supply line, a relay coil X, a
wire 83, said relay-operated switch R3 and a wire
at. Said relay coil X when energized closes relay
switches X1 and X2. Shunt circuits extend
through said relay switches Xi and X2 for short
circuiting the heating resistances of the prelim
10'
the leading edge of the document ?eld and the '
duration of this leading interval may be varied
in the manner indicated. When the relay coil
' R is energized above its critical voltage, relay
switch R1 is closed to short circuit variable re
sistance 56 and charge condenser 133 at line volt
age, relay switch R2 is closed and the film drive
control circuit is completed so that theclutclr
assembly of the advancing means causes film to
shunt circuits includes a wire 85, said relay switch 10 move in the copying camera and relay switch Ra
X1, and a wire as connected to one side of variable
is closed, thus energizing the intermediate circuit
resistance 89. The other shunt circuit comprises
and relay coil it which in turn closes relay
said wire 85, a wire Ell, said relay switch X3 and
switches Xi and X2 to short circuit document~
a wire til connected to said variable resistance 'lEl.
operated switch '52 and heating resistances iii and
Thus, when master relay coil R is energized after 15 at of the illuminating circuits for the'lamps ll»
the leading interval or alter the time required ' luminating the document field and the lndicia of
‘ inary illuminating control circuits. One of such
for the leading edge of a document to move from
the identifying assembly.
engagement with the control member to the lead=
in'g edge of the document ?eld, relay switch R3 is
When the trailing edge of the document leaves
said lingers
the document~operated switch
of the timing control circuit is moved to its other
position and connects condenser 53 for discharge
closed, relay‘coil X is energized and relay switches
so
,
X1 and X2 are closed. Under these circumstances
the variable resistances lit and 3t and the clocu~
from a uniiorm voltage across variable resistance
ment-operated switch l2 are short circuited, so
as; and the trailing interval or time for relay coil
that the lamps 32,
and all are energized to full
R to be deenergized corresponds'to the time re
brilliance and are kept energized after opening 25 quired for the trailing edge of the document to
or" document-operated switch 72 or after the trail
move from its disengagement with ?ngers 35 of
ing edge of the document disengages the control
the control member to and through the document
member or ?ngers 35.
‘
?eld or to the trailing edge thereof. Upon deen
Since there is little, if any, lag in the extinc~
ergiaation of relay coil R, relay switch R1 is
tion or" incandescent lamps but there is gener 30 opened to reintroduce resistance 56 for the charg
ally some leg in the disengagement of a clutch
ing cycle, relay switch R2 is opened to interrupt
assembly, an intermediate means is provided so
the film drive control circuit, and relay switch
that the illuminating means will not be extin
R3 is opened to interrupt the intermediate cir
guished while the advancing means is still mov
cuit. l-T-ut relay switch “in does not directly inter- '
ing ?lm through the copying camera. Said in
rupt the illuminating circuits, and, instead, deen=
termediate means is composed of the circuit in
ergizes relay coil X which, in turn, opens relay
cluding relay coil X and introduces a slight lag
between deene‘rgization of relay coil R and the
switches Xi and X2 to interrupt the illuminating,
circuits. This tandem arrangement of relays R
opening oi switches X1 ‘and X2. In fact, a stand= ' and X introduces sufficient lag in interruption of_
and relay in such intermediate circuit has been 60 the illuminating circuits soithat the clutch as
found suillcient but if a sluggish clutch assembly
is encountered it may be necessary and is within
the scope of the invention to insert an interval
sembly has had an opportunity to he disengaged
and the dim drive is stopped simultaneously with
interruption oi? the illuminating circuits.
Since many variations of the illustrated em~
timer or other delayed-action means to delay
the decnergization of the lamps of the illuminat 45) bodiment of my invention are possibleand will
be readily recognized by those skilled in the art,
ing circuits.
,
the present disclosure is only illustrative and the
Telltale devices may be associated with the
scope oi’ the invention is de?ned by the claims
lamp banks to advise the operator of any ah
which i’ollow.
normal condition therein. A neon lamp $9 is
Having now particularly described my invert
connected by wires to and 9! to opposite sides oi‘
a transformer winding 92 in inductive relation 5 tion what I desire to secure by ‘Letters Patent of
the ‘United States and what I claim is:
to the transformer winding 66. Likewise, a neon
1. In a photographic copying machine having
lamp 93 is connected by wires 94 and 95 to oppo
a document field and a} photographic held, the
site ends of a transformer winding 96 which is in
inductive relation to the transformer winding 76. as combination with a feeding means for moving a
document through said document field, an illumi
If any of lamps 32 burns out the parallel circuits
nating means including an incandescent light
including the banks of lamps 32 and 33 will he,
source and for illuminating said document ?eld,
unbalanced and a current induced in winding
an advancing means including a clutch assembly
92 so that neon lamp 85 is lighted. Likewise, if
any of lamps 42 burns out the parallel circuits so and for moving a ?lm through said photographic
?eld in synchronism with movement of a docu- ‘
are unbalanced and neon lamp 93 will be lighted
ment through said document field, and a control
by reason. of the unbalanced condition inducing
a current in transformer winding 96.
The pro-l .
member spaced from said, document held. and re‘
sponsive to the presence of a document in said
vision of these telltale devices is entirely optional,
feeding means, of a timing control circuit in»
The motor it for driving the feeding means is as cluding
a document operated switch responsive to
connected across the legs ti and 4B of the suii~
said
control
member, an electrical condenser, and
ply line by wires 9i and til. Thus the feeding
a relay coil in parallel therewith, a film drive con
means or drum ill is operative at all times to
move a document inserted therelnto. When the
trol circuit including a solenoid for operating said
clutch assembly and a switch operated by said
leadlngedge of a document raises ?ngers 85, the to relay coil, and an illumination control means in
document-operated switch is moved to connect
cluding a light source of said illuminating means,
the timing control, circuit for charging condenser
a pair of resistances in series, a second document
43. Relay coil R is not critically energized until
operated switch responsive to said control mem
after the leading interval or the time required
bers, and a shunt circuit including a switch oper
ior the leading edge or said document to‘ reach 75 ated by said relay coil and for short circuiting
aces-‘n1
11
coiL
12
ergization of said relay coil after an interval cor
responding to the time for said leading edge of
the document to move after engagement with
the control member to said document ?eld, and
moved to the other of said positions when the
said second document operated switch and one
of said resistances upon energization of said rela
‘
2. In a photographic copying apparatus having
a document ?eld and a photographic ?eld, the
combination with a feeding means for moving a
trailing edge of a document disengeges said con
document through said document ?eld, an ad
trol member, connecting said discharging branch
vancing means adapted to operate in synchronism
into said control circuit and for discharging said
condenser for deenergization of said relay coil
through said photographic ?eld, and a control 10 after an interval corresponding to the time for
the trailing edge of a document to move after
member spaced from said document ?eld and
disengagement with the control member to and
responsive to the presence of a document in said
through said document ?eld.
' feeding means, of a control circuit responsive to
5. In a photographic copying apparatus having
movement of said control member and for con~
trolling said advancing means, and an electrical 15 a document ?eld and a photographic ?eld, the
combination with a feeding means for moving a
delayed action means in said circuit, a charging
document through said document ?eld, an ad
branch circuit connectedto said control circuit
vancing means adapted to operate in synchro
, when a document engages said control member
nism with said feeding means and for moving a
and providing one time interval between move
ment of said control member by the leading edge 20 ?lm through said photographic field, and a con
trol member spaced from said document ?eld and
‘of a document and operation of said advancing
with said-feeding means and for moving a ?lm "
said control circuit when the document disen
responsive to the presence of a document in said
feeding means, of a timing circuit including an
gages said control member and for providing an
other time interval between movement of said
electrical condenser, a relay coil adapted when
energized to cause operation of said advancing
control member by passage of a trailing edge of
a document and inoperativeness of said advanc
means and connected in parallel with said con
denser, and a document operated switch moved
by engagement of a document with said control
means, and a discharging branch connected to
ing means.
'
member to connect said condenser and relay coil
across an electric supply line whereby the voltage
across said relay coil is below its critical voltage
until said condenser has been charged for a, pre
determined time corresponding to the time re
3. In a photographic copying apparatus having
a document ?eld and a photographic ?eld, the
combination with a feeding means for moving a
document through said document ?eld, an ad—
vancing means adapted to operate in synchronism
quired for the leadingedge of a document to move
with said feeding means and for movinga ?lm
throughsaid photographic ?eld, and a control 35 from engagement with said control member to
the leading edge of said document ?eld.
member spaced from said ‘document ?eld and re
6. In a photographic copying apparatus having
sponsive to the presence of a document in said
a document ?eld and a photographic ?eld, the
feeding means, of a control circuit including a
combination with a feeding means for moving a
document operated switch having two operative
positions, moved to one of said positions when 40 document through said'document ?eld, an ad
vancing means adapted to operate in synchro
the leading edge of a document engages said con
nism
with said feeding means and for moving a
trol member and moved to the other of said po
?lm through said photographic field, and a con
sitions when the trailing edge of a document
trol member spaced from said document ?eld and
passes said control member. and including a re
responsive to the presence of a document in said
lay coil adapted whm energized to render said
feeding
means, of a timing circuit including m
advancing means operative, and an electrical de- ‘
electrical condenser, a relay coil adapted when
layed action means in said circuit, energized
energized to cause operation of said advancing
through said switch in said one position thereof
means, having a critical energization voltage and
when the leading edge of a document engages
connected in parallel with said condenser, a re
sistance, and a document operated switch assem
bly moved by engagement of a document with
said control member to connect said condenser
and relay coil to an electric supply and in series
said control member and providing one time in
terval before energization of said relay coil, and
deenergized through said switch in its other po
sition after the trailing edge of a document passes
said control member and providing a second time
with said resistance whereupon the time required
interval before deenerization of said relay coil.
4. In a photographic copying apparatus hav
to impress the critical voltage across or to ener
gize said relay coil is determined by the capacity
ing a document ?eld and a photographic ?eld, the .
combination with a feeding means for moving
of said condenser and the value of said resistance.
7. In a photographic copying apparatus having
a document through said document ?eld, an ad
a document ?eld and a photographic ?eld, the
vancing means adapted to operate in synchro 80 combination with a feeding means for moving a
nism with said feeding means and for moving a
document through said document ?eld, an ad
.?lm through said photographic ?eld, and a con
vancing means adapted to operate in synchro
trol member spaced from said document ?eld and ~
nism with said feeding means and for moving a
?lm through said photographic ?eld, and a con
trol member spaced from said document ?eld and
responsive to the presence or a document in said
feeding means, of a timing control circuit includ
ing an electrical condenser, a relay coil adapted
responsivetothepresence ofadocumentinsaid
feeding rncan's,'of a control circuit including a
relaycoil adaptedwhenenergisedtorendersaid
advancing means operative and an electrical con
denser connected to control the voltage applied
tosaidrelaycoiLandhavingachargingibranch
anddischargingbranchand adocumentoperat
ed
two operative positions,_moved
when energized to render said advancing means
70 operative and connected in parallel with said
tooneofsaidpositionswhentbeleading edge
ofadocumentengagessaidcontroimembenconr
condenser. a pair of resistances, a document»
erated switch assembly moved by engagement of
a document with said control member to connect
nectlng ms charging branch intosaid control" saidcondenserandrelaycoiltoanelectricsup
circuit and for charging said condenser for en 75 plylineinserieswithoneofsaidresistancesand'
2,403,711
13
moved by disengagement of a document from said
control member to disconnect said condenser and '
relay coil from said supply line and to connect
them across the other of said resistances, and a
shunt circuit including a switch closed by ener
gization of said relay coil and for short-circuit
ingsaid one resistance.
‘
8. In a photographic copying apparatus having
a document ?eld and a photographic ?eld, the
‘combination with a feeding means for moving a
document through said document'?eld, an ad-‘
vancing means including a clutch assembly and
inga document ?eld, the combination with a
feeding‘ means for moving a document through
said document ?eld, an‘ illuminating means ‘in
cluding' a light source and for illuminating a
document in said document field, and a control
member spaced from said document ?eld and re
sponsive to the presence of a document in said
feeding means, of a timing control circuit con
trolling energization of said illuminating means
and including an electrical condenser, a relay COIL
in parallel therewith, and a switch operated by
said ‘control member, adapted when a document
engages said control member, to connect said
condenser for charging, and an illumination cir
?eld in synchronism with movement of a docu
merit through said document field, and a control 15 cuit including said‘light source and a' switch
adapted to be closed by said relay coil at an in
member spaced from said document ?eld and re=
terval corresponding to the time for said con»
sponsive to the presence of a document in said
denser to charge and for the leading edge oi a
feeding means, of a timing circuit having a charg
document to move after engagement with. said
ing branch and a discharging branch and include
ing a condenser and a relay coil in parallel and 20 control member to the leading edge oi said docile
including a switch movable to either of two posi=
merit ?eld.
12. in a photographic copying apparatus hav»
tions by said control member for connecting said
charging branch to said circuit in one position
ing a document ?eld and a photographic ?eld,
and said discharging branch to said circuit in the
the combination with a feeding means for mov
other position and for providing‘ di?erent timing
ing the document through said document held,
intervals in each position thereof, and a film
I an illuminating means including an incandescent
drive control circuit including a switch operated
light source and tar illuminating said document
by said relay coil and a solenoid adapted when
?eld,‘ and a control member spaced i‘rom said
energized to render the clutch assembly of said
document field and responsive to the presence oil‘
advacing means operative.
a document in said feeding, means, or’ a document
9. In a photographic copying apparatus having‘ : responsive timing circuit including an electrical
a document ?eld and a photographic ?eld, the
delayed action means and a relay coil which is
combination with a feeding means for moving a
adapted to be energized after an interval corre»
document through said document ?eld, an ade
sponding to the time tor the leading edge or a
vanclng means including'a magnetic clutch as 35 document'to move from engagement with said
sembly and for moving a ?lm through said pho
control member to-the leading edge or‘ said docu
tographic field in synchronisrn with movement of
ment held, an illuminating circuit including a
a document through said document field, and a
_ switch operated by said relay coil and completed
control memberv spaced from said document field
to said light source after an interval, and a pre
and responsive to the presence of a document in
liminary illumination control circuit including a
said feeding means, of a timing control circuit
switch operated by said control member and a
. including a condenser and a relay coil in parallel
resistance and for energizing said light source
and including a switch operated by said control
below incandescence during said interval,
member to connect said circuit for charging said
13, in a photographic copying apparatus hav»
condenser and effectively energizing said coll
ing a copy ?eld and a photographic ?eld, the
after an interval corresponding to the time for
combination with a feeding means for moving a
the leading edge of a document to move from
document through said copy held, an identity
, engagement of said control member to the lead»
ing assembly including indicia also in said copy
ing edge of said document ?eld, and a ?lm drive I field, an illuminating means including light
_ for moving a film through said photographic,
control circuit including the'solenoid of said mags
netic clutch, assembly and a switch closed by one
ergization of said coil.
i
.
10. In a photographic copying apparatus haw
,ing a document ?eld, the combination with a feed
ing means for moving a document through said
document ?eld, an illuminating means including
a light source and for illuminating a document
in said document ?eld, and a control member
spaced from said document field and responsive
sources for illuminating said copy ?eld, and a
control member spaced from said copy ?eld and‘
responsive to the presence or‘ a document in said
feeding‘means, of a document responsive timing
circuit including an electrical condenser and a
relay coil adapted to be energized after an inter»
val corresponding to the time for the leading edge
- of a document to move from engagement with said
control member to the leading edge oi said copy
?eld,
a preliminary illuminating circuit includ»
to the presence of a document in said {ceding
means, of a document responsive timing circuit (Ml ing a switch closed by said control member when
a document engages the same and lncludinga rem
including an electrical’ delayed action means and
sistance for reducing the energization of said
a relay coil, and an illumination circuit includ~
ing~ said light source, including a switch closed
illuminating circuit
means including
during said
a switch
interval,
responsive
and
by said'relay coil after an interval determined
to energisation of said relay coil and for shunting
by said delayed action means and correspond“
said preliminary illuminating circuit immediatehr
ing to the time required for the leading edge of
a document to move after its operation of said
after said interval,
‘
‘M. In a photographic copying apparatus hav
control member to the leading edge of said docu
ing a document ?eld and a photographic held, the
ment ?eld, said switch being interrupted after a
second interval determined by said delayed action W combination with a feeding means for moving a
document through said document ?eld, an identi
means and corresponding to the time required for
fying assembly including indicia for forming an
‘the trailing edge of a document to move after
disengaging said control member to and through
image in said photographic ?eld, an illuminat
said document ?eld.
ing means including light sources for illuminat
11. In a photographic copying apparatus hav 75 mg said document ?eld and said indlcia, and a
15
‘2,408,711
control member spaced from said document ?eld
and responsive to the presence of a document in
said feeding means, 017a timing control circuit
including an electrical condenser, a relay coil con
nected in parallel with said condenser, and a doc
ument 'operated switch assembly moved by en
gagement or a document with said control mem
ber to connect said condenser for charging and
.
16
circuits, and an intermediate circuit including
a switch operated by said relay coil and includ
ing a second relay coil deenergized when the ?rst
mentioned relay coil is deenergized whereupon
said switch in the illumination control circuit is
opened after opening of the switch in said ?lm
drive control circuit.
.
delayed energization of said relay coil, and an
17. In a photographic copying apparatus hav
ing a document ?eld and a photographic ?eld, the
illumination control means including a switch
combination with a feeding means for moving a
responsive to movement of said control member,
document through said document ?eld, an illu
said light sources 01' the illuminating means, a
minating means including an incandescent light
source a.-d for illuminating said documment ?eld.
pair of resistances for reducing the energize
tion of said light sources and a pair of shunt cir
and a control member spaced from said document
cuits each including a switch member adapted to 15 ?eld and responsive to the presence of a docu
be closed by energization of said relay coil and
ment in said feeding means, of a pro-illumination
to short-circi' ‘t said resistances for normal ener
circuit responsive to said control member and
gization of said light sources.
for energizing said light source below incandes
15. In a photographic copying apparatus hav~
cence, an illumination circuit operative to ren
ing a copy ?eld and a photographic ?eld, the com~ 20 der said lire-illumination circuit ine?'ective and
bination with a feeding means for moving a docu
for energizing said light source to incandescence,
ment through said copy ?eld, an advancing
and an interval control means initiated by en
means including a clutch assembly and for mov
gagement of a document with said control mem
ing a ?lm through said photographic ?eld in syn
ber, providing an interval corresponding to the
chronism with document movement, an illumi
nating means including a light source for illumi
nating said copy ?eld, and a control member
time for the leading edge of a document to move
spaced from said copy ?eld and responsive to the
presence of a document in said feeding means, of
from engagement'with said control member to
the leading edge of said document ?eld, and then
at the end of said interval rendering said illu
mination circuit operative.
18. In a photographic copying machine hav
a ?lm drive circuit for controlling the clutch as 30
sembly of said advancing means, an illumination
ing a document ?eld and a photographic ?eld,
circuit for energizing said light source, a timing
the combination with a ieeding means for moving
control circuit ior rendering said ?lm drive and
a document through said‘document ?eld, an ad
vancingimeans adapted to operate in synchro
document illumination circuits operative and in
operative, and an intermediate means between 85 nism with said feeding means, and for moving a
said timing control circuit and said document
?lm through said photographic ?eld, a clutch
means between said feeding means and advanc
illumination circuit for delaying deenergization
ing means. and upon engagement connecting one
of the latter until after the ?lm drive circuit is
deenergized and said clutch assembly is disen ‘0' to the other, an illuminating means including
gaged.
'
16. In a photographic copying apparatus hav
an incandescent light source and for illuminat
ing said document ?eld, and a control member
located ahead of said document ?eld in the di
ing a copy‘?eld and a photographic ?eld. the com
rection of document movement and responsive
bination with a feeding means for moving a docu
to the presence of a document in said feeding
‘ment through said copy ?eld, an advancing
means, of an interval control means initiated by
means including a clutch assembly and for mov
said control member upon engagement of a docu
ing a ?lm through said photographic ?eld in
ment therewith, providing an interval corre
synchronism with document movement, an illu
sponding to the time for the leading edge of a
minatlng means including a light source for illu
minating said copy ?eld, and a control member 50 document to move from engagement with said
control member to the leading edge of said docu
spaced fromgsaid copy ?eld and responsive to the
ment ?eld, and operative at the end or said in
presence of a document in‘ said feeding means,
terval to cause engagement oi’ said clutch means,
of a ?lm drive circuit including a switch and a
a pre-illumination circuit responsive to said con
solenoid energized and deenergized for engage
trol member and for energizing said light source
, ment and disengagement of said clutch assembly,
below incandescence during said interval, and a
an illumination circuit for energizing said light
, document illumination circuit responsive to said
source and including a switch for interrupting
interval control means at the end of said interval
said illumination circuit, a timing control circuit
and for energizing the pre-energized light source
responsive to said control member, including a
relay coil‘ for controlling energization and de 60 to incandescence immediately.
JOHN F. EGAN.
energization of said ?lm drive and illumination
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 647 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа