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Патент USA US3089394

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May 14, 1963
w. BAASNER
3,089,384
PHOTOGRAPHIC MASKING ARRANGEMENT
Filed Oct. 18, 1960
2 Sheets-Sheet 1
FIG./
INVENTOR
WI LHELM BAASNER
ATTORNEY
May 14, 1963
w. BAASNER
3,089,384
PHOTOGRAPHI'C MASKING ARRANGEMENT
Filed Oct. 18. 1960
2 Sheets-Sheet 2
260
LW
17
A1
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24
25
20
15b
26
V
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/
INVENTOR
WILHELM BAASNER
BY
é'péaké / ‘6%,
ATTORNEY
United States Patent 0 Mice
1
3,089,384
Patented May 14, 1963
2
size of the photograph to be adjusted without changing
3,089,334
Wilhelm Baasncr, Munich, Germany, assiguor to Agfa
PHGTGGRAPHEC MASKING ARRANGEMENT
Alrtiengeselischaft, Leverkusen, Bayerwerk, Germany
Fiied Oct. 18, 1960, Ser. No. 63,340
Ciainrs priority, application Germany Get. 31, 1.959
14 Ciaims. (U. S8—24)
the width of the border which has been previously set.
The objects of the present invention also include the
provision of structure capable of accomplishing all of
the above objects and at the same time composed of
simple rugged elements which are very reliable in opera
tion.
With the above objects in view the present invention
The present invention relates to photographic ap
includes, in a masking arrangement for providing, in a
paratus.
10 photographic reproduction apparatus, photographs which
More particularly, the present invention relates to
have diiferent sizes but which have a constant ratio be
photographic reproduction devices which are adapted to
tween their lengths and widths, a manually operable
make photographic prints. These devices are commonly
means and a ?rst pair of parallel masking elements. A
referred to as enlargers, for example.
?rst transmission means transmits movement of this man
In photographic reproduction apparatus of this type 15 ually operable means to the ?rst pair of masking elements
it is necessary to provide a masking arrangement which
to move the latter toward and away from each other
determines the size of the photographic image, and in
with a ?rst transmission ratio between the manually
the operation of conventional photographic reproduction
operable means and the ?rst pair of masking elements.
apparatus a considerable amount of time and elfort is
required, particularly on the part of inexperienced per
sonnel, for determining the proper settings of the mask
ing elements so as to produce a photograph of the de
A second pair of masking elements extend across the
?rst pair of masking elements, and a second transmission
means transmits the movement of the manually operable
means to the second pair of masking elements to move
sired size. Not only is it necessary to set the masking
the latter toward and away from each other with a sec
ond transmission ratio between the manually operable
elements so that the photographic reproduction will have
the desired ratio between the length and width of the 25 means and the second pair of masking elements, and in
accordance with the present invention the ?rst transmis
photograph, but in addition, care must be taken to con
sion ratio and the second transmission ratio have with
sider the width of the blank border which surrounds the
respect to each other a ratio which is equal to the above
photograph on the photographic paper, since the posi
mentioned constant ratio between the lengths and widths
tion of the paper is determined by its outer edges while
the photograph itself will always be smaller than the 30 of the photograph.
The novel features which are considered as character
outer periphery of the paper and surrounded by a border
istic for the invention are set forth in particular in the
of a given Width. Therefore, when the width of this
appended claims. The invention itself, however, both
border is taken into consideration, the calculations be
come fairly complex and very often errors are made par
as to its construction and its method of operation to
ticularly in the case of inexperienced personnel.
35 gether with additional objects and advantages thereof,
will be best understood from the following description
One of the objects of the present invention is to pro
vide a photographic reproduction apparatus of the above
of speci?c embodiments when read in connection with
the accompanying drawings, in which:
type wherein a single adjusting element can be actuated
FIG. 1 is a prospective illustration of that part of a
for providing photographs of di?erent sizes but all of
which have a constant ratio between their lengths and 40 photographic reproduction apparatus which carries the
widths. Most photographs have a certain predetermined
structure of the invention;
FIG. 2 is a fragmentary enlarged sectional view show
ratio between their lengths and widths, so that with an
ing the details of the transmission of the invention as
arrangement of this type it is unnecessary for the opera
well as of a clutch and lock means of the invention; and
tor to carry out any calculations since a single manipula
FIG. 3 is a fragmentary prospective illustration on an
tion will result in the proper relationship between the 45
enlarged scale, as compared to FIG. 1, illustrating an
length and width of a photograph.
other embodiment of a stop means adapted to cooperate
Another object of the present invention is to provide
'with a sheet of printing paper for determining the posi
a photographic apparatus of the above type which while
tion of the latter.
being capable of providing photographs of different sizes
Referring now to FIG. 1, there is fragmentarily illus
all of which have the same ratio between the length and 50
trated therein a housing 1 of the photographic enlarger
width nevertheless can at the same time be very easily
manipulated so as to provide photographs of special
which includes the structure of the invention, the optical
apparatus of the enlarger being purely conventional and
lengths and widths whose ratio differs from the usual
being omitted from P16. 1 for the sake of clarity. The
ratio, so that it is a simple matter to provide for special
conditions where the length and width of the photograph 55 upper part of the housing 1 which is illustrated in FIG.
1 includes a pressure plate 2 part of which is formed by
is ditlerent from the usual length and width relation.
a transparent glass sheet 3. The image of the photograph
An additional object of the present invention is to
which is to be reproduced is directed through the glass
provide an arrangement of the above type wherein the
sheet 3 from the underneath thereof onto the light
masking elements which determine further dimensions of
the photograph are securely locked with respect to move 60 sensitive photographic paper which is located over the
glass sheet 3, and the area of the photographic reproduc
ment against each other in a fully automatic manner
tion is determined by two pairs of masking elements.
while the masking elements which determine the other
The elongated masking elements 4 and 5 are parallel to
dimension can be adjusted with respect to each other.
each other and form one of the pairs of masking ele
ilt is also an object of the present invention to provide
65 ments, while the elongated masking elements 6 and '7'
in cooperation with a structure of the above type a means
are also parallel to each other, extend perpendicularly
which will automatically determine the width of the
across the elements 4 and 5, and form the other pair of
border which surrounds the photograph.
masking elements.
Still another object of the present invention is to pro
A means is provided for moving the elements of each
vide a single adjusting element which can be actuated 70 pair of masking elements toward and away from each
for regulating the width of the border which surrounds
other, and this moving means includes a pair of elongated
the photograph while at the same time permitting the
racks 8 and 9 respectively ?xed to and carrying the mask
3,089,384
4
3
when this clutch means is disengaged it is possible for
ing elements 4 and 5 as well as a second pair of elongated
racks 10 and 11 respectively ?xed t0 and carrying the
masking elements 6 and 7. A guide means is provided
for guiding the racks for longitudinal movement, and this
guide means takes the form of a plurality of pins 12
?xedly carried by the upper plate 2 of the housing 1 and
the shaft 15 to rotate while the pinion 16 remains sta
tionary.
This clutch means includes a disk 20 which is riveted to
the bottom end of the hub 16a of the pinion 16 so that the
disk 20 is ?xed to the pinion 16 for rotary movement
de?ning between themselves spaces through which the
therewith. This disk 20 in addition to forming part of
several racks pass in the manner shown in FIG. 1, so that
the pins 12 cooperate with the outer side edges of the
the clutch means of the invention also forms part of a
lock means of the invention, described below, and for
the purpose of the lock means the disk 20 is provided with
racks to guide the latter for longitudinal movement. it
will be noted that the racks 8 and 9 are parallel to each
teeth distributed along its outer periphery. It will be
noted that the disk 20 engages the under side of the bear
ing 19. The shaft 15 is provided with a threaded portion
15b, and this threaded portion 15b serves to threadedly
’ other and extend perpendicularly across the racks 10 and
11. Moreover, the masking elements 4 and 5 respectively
extend perpendicularly from the racks 8 and 9. In the
same way, the racks 1t) and 11 are parallel to each other 15 connect to the shaft 15 for rotary movement therewith a
and the masking elements 6 and 7 respectively extend
perpendicularly from the racks 10 and 11. Each pair of
racks respectively has rack teeth directed towards each
other. These racks form part of a transmission means
for moving the several masking elements, and this trans 20
second disk 21 which also forms part of the clutch means
of the invention. This second disk 21 is formed with an
axial bore or opening 22, and the disk 20 ?xedly carries
a pin 23 which extends into the bore 22 when the clutch
means is in its engaged position illustrated in FIG. 2.
The pin 23 is riveted at its top end to the disk 20 as shown
in FIG. 2.
mission means further includes a pair of coaxial pinions
14 and 16. As may be seen from FIGS. 1 and 2, the pin
The lock means of the invention which acts through the
ion 16 is located between and meshes with the teeth of
disk 21) on the pinion .16 for releasably locking the latter
the rack 10 and 11 while the pinion 14 is located between
and meshes with the teeth of the racks 8 and 9. A single 25 automatically in the angular position it happens to be
in when the clutch means is disengaged, includes the
shaft 15 forms a manually operable means operatively
wedge member 24 which is guided ‘for shifting movement
connected to the pinions for turning the latter and thus
to the right and left, as viewed in FIG. 2, through a guid
actuating the pair of transmission means which move the
ing structure which is not illustrated for the sake of clarity.
pairs of parallel masking elements. The shaft 15 ex
tends coaxially through the pair of pinions 14 and 16 and 30 Thus, the portion 17 of the wall 2 is provided with a
is ?xedly connected with the pinion 14 by way of a cross
downwardly directed projection formed with a suitable
pin 34 (FIG. 2). It will be noted that the space between
cutout passing therethrough and in which the member 24
the racks If) and 11 is somewhat larger than the space
between the racks 8 and 9, and the pinion 16 is some
is slidably guided for movement to the right or left, as
viewed in FIG. 2. The disk 21 has a beveled peripheral
36 portion '25 cooperating with an inclined surface of the
what larger than the pinion 14.
The most usual photographic format which is used in
by far the majority of all photographs is one where the
length of the photograph has with respect to the width
of the photograph the ratio of the square root of 2 to 1.
wedge member 24. An elongated leaf spring member 26
‘has one end 26a ?xed by a screw 27 to the wall 2, and
the opposite end of the leaf spring 26 which is to say
the end 26b thereof, is riveted to a pin 28 which is also
In the illustrated example the diameter of the pitch cir 40 riveted to the lock member 29 provided at its left end,
cle of the pinion 16 has with respect to the diameter of
as viewed in FIG. 2, with a tooth which is adapted to ex
the pitch circle of the pinion 14 the ratio of the square
tend into the gap ‘between a pair of successive teeth at
root of 2 to 1. As a result of this arrangement, when the
the periphery of the disk 29. The portion 17 of the wall
operator turns the shaft 15, both of the pinions 14 and
2 ?xedly carries at its underside a strap 31 which extends
16 will turn and both of the pairs of racks will be 45 across the underside of the lock member 29 and which
shifted longitudinally, the racks of each pair moving in
has a pair of vunillustrated free ends ?xed to the portion
opposite directions, so that in this way the masking ele—
‘17 of the wall 2, so that this strap 31 supports the lock
ments of each pair are moved toward or away from each
member 29 for movement to the right and ‘left, as viewed
other, but at the same time because of the relationship
in FIG. 2. The strap 31 is formed with an elongated slot
between the diameters of the pitch circles of the pin 50 30 extending longitudinally to the right and left, as viewed
ions 14 and 16, the length of the photograph, irrespec
in FIG. 2, and the pin 28‘ extends slidably through the
tive of its size, will have with respect to the width of the
photograph the ratio of the square root of 2 to 1, so that
with the structure of the invention it is unnecessary for
the right or'left, as viewed in FIG. 2. It is clear therefore,
that when the wedge element 24 is shifted to the left, as
slot 30 so as to be guided by the latter for movement to
the operator to make any calculations and once he sets 55 viewed in FIG. 2, the spring 26 will act through the pin
either the length or the width of a photograph to a de
28 on the ‘lock member 29 to shift the latter to the left
sired size, the other dimension will have the proper mag
so as to place the tooth of the lock member in engage
nitude.
ment with the teeth of the disk 26 to prevent turning of
As is evident from FIG. 2, the shaft 15 ?xedly carries
at its top end a knob 15d so as to facilitate manual turn
ing of the manually operable means formed by the shaft
the latter and thus prevent turning of the pinion 16‘. Of
60 course, the sides of the strap 31 extend along and are lo
cated directly next to the sides of the lock member 29
15.
so that the latter can only move to the right and left, as
As is also apparent from FIG. 2, the upper wall 2 of
viewed in ‘FIG. 2.
the housing 1 has a thickened portion 17 at the region
The shaft 15 is provided beneath the threaded portion
where the shaft 15 passes through the wall 2. This por» 65 15b thereof with a free end portion 15c which extends
tion 17 is formed with a bore 18, and a bearing member
slidably into a guide member 32 which in its interior
19 is ?xedly arranged in the bore 18. The pinion 16 ex
houses a spring 33 which acts on the bottom end of the
tends through and is turnably supported by the bearing
shaft 15 to urge the latter upwardly to the position illus
19, in the manner shown in FIG. 2. The shaft 15 has
trated in FIG. 2. This spring 33 acts also to urge the
a portion 15a which extends slidably through the pin 70 clutch means to its engaged position.
ion 16 and is in no way positively connected therewith,
Thus, whenever the operator wishes to change the size
so that the pinion 16 is not constratined at all times to
of the photograph while maintaining the normal ratio of
rotate with the shaft 15. A clutch means is provided in
the square root of 2 to 1 between the length and width
of the photograph, it is only necessary for the operator to
accordance wih the present invention for connecting and
disconnecting the shaft 15 from the pinion 16, so that 75 turn the single shaft 15. When it is desired to make a
3,089,384
5
6
photograph whose length and width do not conform to
these normal proportions, then the operator turns the
shaft 15 until the masking elements ‘6 and 7 are spaced
from each other by a distance equal to the length of the
desired photograph, and this distance can be determined
with respect to the masking elements 4-7. Such print
ing paper is indicated by dot-dash lines in FIG. 1. The
from a scale means which is described below.
Once the
stop means carried by the masking element 4 includes a
pair of stop pins 52 and 52a which are adapted to en
gage one side edge of the printing paper, while the stop
means carried by the masking elements 6 includes a pin
distance between the masking elements 6 and 7 is deter
mined, the operator depresses the shaft 15 in opposition
55 which engages another edge of the light-sensitive photo
to the spring 33, and this will cause the disk 21 of the
ber 55 is carried by a bell crank 53 of the stop‘ means, this
clutch means to move downwardly and away from the
graphic paper on which the print is made. The stop mem—
bell crank 53 being pivotally carried by the masking ele
ment 6 and the bell crank 53 has at the end thereof dis
disk 26. The beveled periphery 25 of the disk 21 will
tant from that end which carries the pin 55 a second
simultaneously cooperate with the wedge element 24‘ to
pin 54.
shift the latter to the left, as viewed in FIG. 2, in op
The stop means carried by the masking element 4 in
position to the spring 26. Thus, the spring 26 will move
the locking tooth 29 to the left, as viewed in FIG. 2, simul 15 cludes a pair of hell cranks 49 and 56 which respectively
carry the stop members 52 and 52a, and these bell cranks
taneously with the downward movement of the clutch
49 and 56 are pivotally carried by the masking element 4.
element 21, and the tooth of the locking element 29‘ will
The bell crank 49 carries at its end distant from the pin
engage the teeth of the disk 20 when the element 21 has
52 a second pin 5i, and a link 57 is pivotally connected
moved downwardly away from the element 26 by a dis
at both of its ends to the bell cranks 49 and S6 in the
tance sufficient to separate the opening 22 from the pin
manner indicated in FIG. 1. This link 5'7 extends paral
23, so that when the clutch is disengaged by such separa
lel to the inner side edge of the masking element 4 which
tion of the opening 22 and pin 23 from each other, the
determines one side of the ?eld in which the photograph
locking element 29 engages the teeth of the disk 26 to lock
is reproduced, and thus a parallelogram linkage is pro
the pinion 16 and thus the racks it} and ill vfrom move
ment, and in this way the space between the masking ele 25 vided which will maintain the legs of the bell crank 56 at
all times parallel to the legs of the bell crank 49, so that
ments 6 and 7 is reliably maintained while the clutch
when
the latter is turned to adjust the position of the pin
means is in its disengaged position. With the clutch means
52 relative to the masking element 4», the position of the
thus held by the operator in its disengaged position, the
operator turns the shaft 15 so that the pinion 14 will coop
erate with the racks 8 and 9 to adjust the distance between -
the masking elements ‘4 and 5 and thus determine the
width of the photograph, and it will be noted from FIG. 1
that the scale 36 cooperates with a pointer 35 carried by
the rack 8 so as to indicate to the operator that the width
not only of a special photograph but the width of the
photographs which are made when the clutch means is
engaged. Of course, once the shaft 15 has been turned
to a relatively small angle as to place the opening 22 out
of alignment with the pin 23, the clutch means cannot be
returned by the spring 33 to its engaged position. Thus,
it is possible to manually disengage the clutch means so
as to make a photograph of any desired relation between
its length and width.
pin 52a will be adjusted in exactly the same way so that
these pins are always located at the same distance from
the inner edge of the masking element 4.
A single manually operable element is provided for ad
justing the pair of stop means which are respectively car
ried by the masking elements 4- and 6, and this single
manually operable element includes the rotary shaft 37
which is supported for rotation about its axis by the upper
wall 2 of the housing 1 in any suitable way. This shaft
37 ?xedly carries a pinion 45 and it also carries a pointer
38 which cooperates with an arcuate scale 39 carrying
indicia which indicates to the operator according to the
position of the pointer the width of the border which will
surround the photograph on the printing paper. In other
words, the pointer 38 cooperates with a scale 39 to indi
cate to the operator the distance between the stop mem
When it is desired to return to the making of pho
bers 55, 52, 52a and the inner edges of the masking ele
tographs of the normal length and width ratio of the 45 ments 5 and 4.
square root of 2 to 1, the operator merely turns the shaft
The pinion 4d meshes with a pair of racks 42 and 43.
15 until the opening 22 of the disk 21 again becomes
Thus, the teeth 41 of these racks 42 and 43 are shown in
aligned with the pin 23, and immediately upon such align
FIG. 1 meshing with the single pinion 4% which is ?xed
ment the spring 33 will move the shaft 15 upwardly to the
to the shaft 37 for rotary movement therewith. These
position indicated in FIG. 2 where the clutch means is 50 racks 42 and 43 form parts of a pair of transmission
again engaged. Because of the provision of a single pin
means for transmitting movement of the single manually
23 cooperating with a single opening 22, the angular rela
operable element 37 to the pair of stop means respectively
tionship between the pinion 16 and the shaft 15 is always
carried by the masking elements 4 and 6. As may be seen
the same when the clutch means transmits rotary move
from FIG. 1 pins 44 are provided to cooperate with the
ment of the shaft 15 to the pinion 16, and in this way 55 side edges of the racks 42 and 43 to guide the latter for
longitudinal movement. The rack 42 ?xedly carries an
the structure guarantees that when the clutch means is
arm 45 which extends perpendicularly with respect to the
reengaged the pinion l4 acts on the racks 8 and 9 so
rack 4-2 in a direction parallel to the masking element 6,
as to place the masking elements 4 and 5 again at a
and this arm 45 is formed with an elongated slot 46 ex
distance from each other equal to the distance they had
between each other when the clutch means was disen
gaged, so that the return of their parts to the position
which they had before disengagement of the clutch means
is assured.
Of course, upon return of the clutch means to its en
tending also parallel to the masking element 6 in the direc
tion in which the masking element 4 moves. The pin
51 is located in the slot 46. Thus, when the pinion 49
is turned upon rotation of the shaft 37 the rack 42 will
shift longitudinally to move the arm 45 transverse to
gaged position shown in FIG. 2 the spring 26 returns the 65 the direction of the slot 46 in a direction parallel to the
masking element 4, and thus through the pin-and-slot
wedge element 24 to the position shown in FIG. 2 and
connection 51, 46 the bell crank 49 will ‘be turned so as
also the spring 26‘ shifts the locking element 29 to the
to adjust the position of the pin 52 with respect to the
right, as viewed in FIG. 2, so as to unlock the disk 21!}
masking element 4. Because of the above-described
and pinion 16 so that these elements can now turn to
gether with the shaft 15.
70 parallelogram linkage, the pin 52a will be simultaneous
ly adjusted in exactly the same way.
A pair of the masking elements which cross over each
other, the masking elements at and 6 in the illustrated ex—
ample, ‘respectively carry a pair of stop means which
The rack 43 ?xedly carries an arm 47 which extends
perpendicularly from the rack 43 in a direction parallel
to the masking element 4, and this arm 47 is formed with
engage a pair of intersecting side edges of the printing
paper so as to determine the position of the printing paper 75 an elongated slot 48 extending parallel to the masking ele
3,089,384
8
ment 4 in the direction in which the masking element 6
moves. The pin 54 extends into the slot 4%, so that in
this Way a pin-and-slot connection is provided between the
which act in the same way as stop members 52 and 52a
to engage a side edge of the photographic paper. It is
masking element 6 and the rack 43. Thus, during turning
clear that the embodiment of FIG. 3 will produce the
4a, and the block 65 carries a pair of stop members 68
of the shaft 37 and pinion 4t) therewith, the rack 43 will
same results as the stop means of FIG. 1 which is carried
be shifted longitudinally so as to move the arm 47 in a
by the masking element '4.
Although it is possible to use, instead of the pinion
direction transverse of the length of the slot 48, and thus
the bell crank '53 will be turned to adjust the position of
and rack transmission between the element 15 and the
the pin 55 with respect to the inner edge of the masking
several racks 8—1=1, a cable or chain drive, or a friction
element 6.
10 wheel drive, it is preferred to use the above-described
It will be seen that with this arrangement the pair of
pinion and rack arrangement. Moreover, the lock means
transmission means transmitting the movement of the shaft
can take the form of a brake or clamping device, but
37 to the pair of stop means respectively carried by the
here again the above-described cooperation of elements
masking elements 4 and 6 allow these masking elements 4
29 and 20 is preferred.
‘and 6 to be adjusted without in any way disturbing the set 15
It will be understood that each of the elements de
ting of the pair of stop means with respect to the edges of
the masking elements 4 and 6. Thus, during shifting of the
rack 14) so as to adjust the position of the masking ele
ment 6, the pin 54 will simply move along the slot 48
scribed above or two or more together, may also ?nd a
useful application in other types of photographic appa
ratus differing from the types described above.
the invention has been illustrated and described
without in any way changing the position of the pin 55 20 as While
embodied in photographic reproduction apparatus, it
relative to the inner edge of the masking element 6. In
is not intended to be limited to the details shown, since
the same way, when the rack S is shifted longitudinally
various modi?cations and structural changes may be made
to adjust the position of the masking element 4, the pin
without departing in any way from the spirit of the present
51 will move along the slot 46 Without in any way disturb
ing the position of the stop members 52 and 52a with 25 invention.
Without further analysis the foregoing will so fully
respect to the inner edge of the masking element 4. The
reveal the gist of the present invention that others can
light-sensitive printing paper is placed from above on the
masking elements 4-7, in the position indicated by the
by applying current knowledge readily adapt it for var
ious applications without omitting features that, from the
dot-dash lines in FIG. 1, and it will be seen that the
edges of the paper will engage the stop members 55, 52 30 standpoint of prior art, fairly constitute essential char
acteristics of the generic or speci?c aspects of this inven
and 52a so that the position of the paper will be precise
tion and, therefore, such adaptations should and are in
ly determined. A cover member which is not shown for
tended to be comprehended within the meaning and range
the sake of clarity is placed over the paper to press the
of equivalence of the following claims.
latter against the masking elements, and this cover mem
What is claimed and desired to be secured by Letters
ber is provided with suitable cutouts in which the paper 35
Patent is:
stop means are received so that the cover member does
not disturb the position of the pair of stop means.
l. A masking arrangement for providing, in a photo
graphic reproduction apparatus, photographs which have
The rack 43 ?xedly carries the elongated scale 58 which
different sizes but which have a constant ratio between
extends perpendicularly with respect to the rack 43, and
this scale 58 carries graduations 59 which indicate the 40 their lengths and widths, comprising, in combination,
manually operable means; a ?rst pair of parallel mask
relationship between the width of the border which sur
ing elements; ?rst transmission means transmitting move
rounds the area in which the photograph is located and
ment of said manually operable means to said ?rst pair
of masking elements for moving the latter toward and
ations 59 indicate the relationship between the length
of the photograph and the width of the border surround 45 away from each other with a ?rst transmission ratio be
tween said manually operable means and said ?rst pair
ing the same. The individual graduations 59 terminate
of masking elements; a second pair of parallel masking
in a point or small circle 6%}, and a pointer member 6}.
elements extending across said ?rst pair of masking ele
is ?xed to the masking elements 6 and extends at a 45°
ments; second transmission means transmitting movement
angle across the scale member 58. When the pointer
of said manually operable means to said second pair of
member 61 extends across the point or circle 60 at the
masking elements for moving the latter toward and away
end of a selected graduation 59, then the operator knows
from each other with a second transmission ratio between
that the apparatus has been set for the desired relation
said manually operable means and said second pair of
between the length of the photograph and the width of
masking elements, said ?rst transmission ratio and said
the border surrounding the same, and since the width of
the photograph will always have a predetermined rela 55 second transmission ratio having with respect to each
other a ratio equal to said constant ratio between the
tion with respect to the length of the photograph, the
lengths and widths of the photographs; and clutch means
relation between the width of the border and the size
the size of the photograph itself. Actually these gradu
of the photograph is determined by the cooperation of
the scale and pointer members 58 and 61. Thus, by
cooperating with one of said transmission means for op
operator to set the masking elements 4-7 to a particular
size with respect to a chosen width of the border.
means will not move while said manually operable means
actuates the other of said transmission means to move the
FIG. 3 illustrates a variation in the structure of FIG. 1
according to which it is not necessary to provide a par
pair_of masking elements actuated by said other trans
tionally rendering the latter inoperative so that the pair
selecting a proper graduation 59 it is possible for the 60 of masking elements actuated by said one transmission
mission means.
2. A masking arrangement for providing, in a photo
allelogram linkage for the stop means which is carried 65
graphic reproduction apparatus, photographs which have
by the masking element 4. Referring to FIG. 3, it will
be seen that the slot 46 of the arm 45 receives a pin 64
carried by a bell crank 62 which is pivoted at 63 on the
different sizes but which have a constant ratio between
their lengths and widths, comprising, in combination,
masking element 4. This bell crank 62 has a pin-and-slot
manually operable means; a ?rst pair of parallel masking
connection 66 with a block 65 which is guided on the
masking element 4 for movement toward and away from
elements; ?rst transmission means transmitting movement
of said manually operable means to said ?rst pair of
masking elements for moving the latter toward and away
from each other with a ?rst transmission ratio between
said manually operable means and said ?rst pair of mask
the inner edge 4a thereof. The block 65 is formed with
a T-notch extending inwardly from its inner edge, and
a T-block 67 cooperates with this notch to guide the
block 65 for movement toward and away from the edge
ing elements; a second pair of parallel masking elements
3,089,384
extending across said ?rst pair of masking elements; sec
ond transmission means transmitting movement of said
manually operable means to said second pair of masking
elements for moving the latter toward and away from
each other with a second transmission ratio between said
maintaining the ratio between the lengths and Widths of
the photographs constant; and clutch means releasably
connecting one of said pinions with said shaft for rotary
movement therewith, said clutch means having a disen
engaged position where said one pinion is not operatively
connected to said shaft for rotary movement therewith
so that when said clutch means is in said disengaged posi
tion thereof the racks actuated by said one pinion will
ratio equal to said constant ratio between the lengths
remain stationary during rotation of said shaft with the
and widths of the photographs; clutch means cooperating 10 other of said pinions.
with one of said transmission means for optionally render
5. A masking arrangement for providing, in a photo
ing the latter inoperative so that the pair of masking
graphic reproduction apparatus, photographs which are
manually operable means and said second pair of masking
elements, said first transmission ratio and said second
transmission ratio having with respect to each other a
elements actuated by said one transmission means will not
of different sizes but which have a constant ratio between
move while said manually operable means actuates the
their lengths and widths, comprising, in combination, a
other of said transmission means to move the pair of 15 ?rst pair of parallel racks respectively having rack teeth
masking elements actuated by said other transmission
directed toward each other; guide means guiding said ?rst
means; and lock means actuated by said clutch means
pair of parallel racks for longitudinal movement; a ?rst
for automatically locking the pair of masking elements
rotary pinion located between and meshing with said ?rst
actuated by said one transmission means in the position
pair of racks; a ?rst pair of parallel masking elements re
they have when said one transmission means is rendered 20 spectively ?xed to and extending perpendicularly from
inoperative by said clutch means.
said ?rst pair of racks; a second pair of parallel racks ex
3. A masking arrangement for providing, in a photo
tending perpendicularly across said ?rst pair of racks and
graphic reproduction apparatus, photographs which are
also respectively having rack teeth directed toward each
of different sizes but which have a constant ratio between
other; a second pinion located between and meshing with
their vlengths and widths, comprising, in combination, a 25 said second pair of racks, said second pinion being co
?rst pair of parallel racks respectively having rack teeth
axia-l with said ?rst pinion and the pitch circles of said
directed toward each other; guide means guiding said ?rst
pinions having with ‘respect to each other a ratio equal
pair of parallel racks for longitudinal movement; a ?rst
to said constant ratio; guide means guiding said second
rotary pinion located between and meshing with said ?rst
pair of racks for longitudinal movement; a second pair of
pair of racks; a ?rst pair of parallel masking elements 30 masking elements respectively ?xed to and extending per
respectively ?xed to and extending perpendicularly from
pendicularly from said second pair of racks across said
said ?rst pair of racks; a second pair of parallel racks ex
?rst pair of masking elements; a single rotary shaft opera
tending perpendicularly across said ?rst pair of racks and
tively connected with said pinions coaxially therewith for
also respectively having rack teeth directed toward each
simultaneously turning said pinions when said shaft is
other; a second pinion located between and meshing with 35 turned, so that said masking elements can be adjusted to
said second pair of racks, said second pinion being coaxial
provide a photograph of a desired size while maintain
with said ?rst pinion and the pitch circles of said pinions
ing the ratio between the lengths and widths of the photo
having with respect to each other a ratio equal to said
graphs constant; clutch means releasably connecting one
constant ratio; guide means guiding said second pair of
of said pinions with said shaft for rotary movement there
racks for longitudinal movement; a second pair of mask 40 with, said clutch means having a disengaged position
ing elements respectively ?xed to and extending perpen
where said one pinion is not operatively connected to said
dicularly from said second pair of racks across said ?rst
shaft for rotary movement therewith so that when said
clutch means is in said disengaged position thereof the
pair of masking elements; and a single rotary shaft oper
atively connected with said pinions coaxially therewith
racks actuated by said one pinion will remain stationary
for simultaneously turning said pinions when said shaft 45 during rotation of said shaft with the other of said pinions;
and releasable lock means cooperating with said one
is turned, so that said masking elements can be adjusted
to provide a photograph of a desired size while maintain
pinion and actuated by said clutch means for automati
cally locking said one pinion against rotation when said
ing the ratio between the lengths and widths of the photo
clutch means is in its disengaged position.
graphs constant.
6. A masking arrangement for providing, in a photo»
4. A masking arrangement for providing, in a photo 50
graphic reproduction apparatus, photographs which are
graphic reproduction apparatus, photographs which are
or" different sizes but which have a constant ratio between
of different sizes but which have a constant ratio be
tween their lengths and widths, comprising, in combina
their lengths and widths, comprising, in combination, a
?rst pair of parallel racks respectively having rack teeth
tion, a ?rst pair of parallel racks respectively having rack
directed toward each other; guide means guiding said ?rst 55 teeth directed toward each other; guide means guiding
said ?rst pair of parallel racks for longitudinal move
pair of parallel racks for longitudinal movement; a ?rst
rotary pinion located between and meshing with said ?rst
ment; a ?rst rotary pinion located between and meshing
with said ?rst pair of racks; a ?rst pair of parallel mask~
pair of racks; a ?rst pair of parallel masking elements
ing elements respectively ?xed to and extending perpen
respectively ?xed to and extending perpendicularly from
said ?rst pair of racks; a second pair of parallel racks 60 dicularly from said ?rst pair of racks; a second pair of
parallel racks extending perpendicularly across said ?rst
extending perpendicularly across said ?rst pair of racks
pair of racks and also respectively having rack teeth di
and also respectively having rack teeth directed toward
each other; a second pinion located between and meshing
rected ‘toward each other; a second pinion located between
‘and meshing with said second pair of racks, said second
with said second pair of racks, said second pinion being
coaxial with said ?rst pinion and the pitch circles of 65 pinion being coaxial with said ?rst pinion and the pitch
circles of said pinions having with respect to each other
said pinions having with respect to each other a ratio
a ratio equal to said constant ratio; guide means guiding
equal to said constant ratio; guide means guiding said
said second pair of racks for longitudinal movement; a
second pair of racks for longitudinal movement; a second
second pair of masking elements respectively ?xed to and
pair of masking elements respectively ?xed to and extend
ing perpendicularly from said second pair of racks across 70 extending perpendicularly from said second pair of racks
across said ?rst pair of masking elements; a single rotary
said ?rst pair of masking elements; a single rotary shaft
shaft operatively connected with said pinions coaxially
operatively connected with said pinions coaxially there
therewith for simultaneously turning said pinions when
with for simultaneously turning said pinions when said
shaft is turned, so that said masking elements can be ad
justed to provide a photograph of a desired size while
said shaft is turned, so that said masking elements can be
adjusted to provide a photograph of a desired size while
3,089,384
11
12
movement therewith, said clutch means having a dis
stop means relative to said pair of masking elements, re
spectively, while said moving means moves said pair of
masking elements, said pair of transmission means in
cluding a pair of elongated pin-and-slot connections, re
engaged position where said one pinion is not operatively
connected to said shaft for rotary movement therewith
spectively, which respectively have slots respectively ex
tending in the directions in which said pair of masking
maintaining the ratio between the lengths and widths of
the photographs constant; and clutch means releasably
connecting one of said pinions with said shaft for rotary
elements move.
so that when said clutch means is in said disengaged posi~
10. In a masking arrangement for a photographic re
tion thereof the racks actuated by said one pinion will
production apparatus, in combination, a pair of elongated
remain stationary during rotation of said shaft with the
other of said pinions, said clutch means including a pair 10 masking elements extending across each other; moving
means cooperating Iwith said elements for moving each ele
of discs respectively ?xed to said shaft and said one
ment in a direction parallel to the other element; a pair
pinion, one of said discs being formed with an opening
of elongated slotted members respectively formed with
and the other of said discs ?xedly carrying a pin located
longitudinal slots and respectively extending parallel to
in said opening when said clutch means is engaged, said
shaft and said one pinion being longitudinally shiftable 15 said masking elements; a pair of hell cranks respectively
pivotally carried by said masking elements, each bell
one with respect to the other for separating said pin and
crank ?xedly carrying a pair of pins which are respec
said opening from each other to place said clutch means
in said disengaged position thereof.
7. In a masking arrangement for a photographic re
tively located adjacent the free ends of each bell crank,
one of the pins of each bell crank forming a stop mem
production apparatus, in combination, a pair of masking 20 ber which is adapted to engage an edge of a light-sensi
tive photographic paper and the other of the pins of each
bell crank extending into the slot of the slotted member
which is parallel to the masking element which carries
the other bell crank; a pair of racks extending across
tively carried by said pair of masking elements for en 25 each other and respectively ?xed to said slotted members;
and a single pinion meshing with both of said racks for
gaging a pair of intersecting edges of a 'light- ensitive
actuating the latter to respectively move said slotted mem
paper on which a photograph is to be reproduced so as
bers respectively in ‘directions transverse to said slots
to determine the location of the paper; and a single ad
thereof for turning said bell cranks to adjust the posi
justing means cooperating with said pair of stop means
for simultaneously adjusting the latter with respect to 30 tions of said stop members so as to regulate the width of
said pair of masking elements for determining the width
the border which surrounds the photograph.
11. In a masking arrangement for a photographic re
of the border which surrounds the photograph.
elements one of which extends across the other; moving
means cooperating with said masking element for mov~
ing the same to regulate the size of the photograph; a
pair of stop means spaced from each other and respec
8. In a masking arrangement for a photographic re
production apparatus, in combination, a pair of masking
production apparatus, in combination, a pair of mutually
elements extending across each other; moving means co
perpendicular masking elements one of which crosses over 35 operating with said elements for moving each masking
the other; moving means cooperating with said masking
elements for moving each masking element in a direction
parallel to the other masking element for adjusting the
size of the photograph; a pair of stop means respectively
carried by said pair of masking elements for engaging
the edges of a light-sensitive paper on which the photo
graph is to be reproduced, said pair of stop means deter
mining the width of the border which surrounds the photo
element in a direction parallel to the other masking ele
ment; a pair of stop means respectively carried by said
pair of masking elements for respectively engaging a pair
of intersecting edges of a light-sensitive photographic
paper for determining the width of the border which sur
rounds a photograph reproduced on said paper; a single
manually operable adjusting element; a pair of transmis
sion means actuated by said single adjusting element and
cooperating with said pair of stop means for adjusting the
graph; a single manually operable adjusting element for
adjusting the position of said pair of stop means with 45 latter; and a scale member and a pointer member, said
members being respectively carried by one of said trans
respect to said pair of masking elements; and a pair of
mission means and one of said masking elements and co
transmission means cooperating with said single adjusting
operating with each other for indicating the particular
element and respectively with said pair of stop means
format of the photograph which will be reproduced.
for transmitting movement of said adjusting element to
12. In a masking arrangement for a photographic re
said pair of stop means for adjusting the latter with re 50
production apparatus, in combination, a pair of masking
spect to said pair of masking elements, said pair of trans
elements extending across each other; moving means co
mission means maintaining the adjusted positions of said
operating with said elements for moving each masking
pair of stop means relative to said pair of masking ele
element in a direction parallel to the other masking ele
ments, respectively, while said moving means moves said
55 ment; a pair of stop means respectively carried by said
pair of masking elements.
9. In a masking arrangement for a photographic repro
pair of masking elements for respectively engaging a pair
duction apparatus, in combination, a pair of mutually per
of intersecting edges of a light-sensitive photographic
pendicular masking elements one of which crosses over
paper for determining the vwidth of the border which sur
rounds a photograph reproduced on said paper; a single
the other; moving means cooperating with said masking
elements for moving each masking element in a direction 60 manually operable adjusting element; a pair of transmis
parallel to the other masking element for adjusting the
sion means actuated by said single adjusting element and
size of the photograph; a pair of stop means respectively
cooperating with said pair of stop means for adjusting
carried by said pair of masking elements for engaging
the latter; and a scale member and a pointer member,
the edges of a light-sensitive paper on which the photo
said members being respectively carried by one of said
graph is to be reproduced, said pair of stop means deter 65 transmission means and one of said masking elements
mining the width of the border which surrounds the
and cooperating with each other for indicating the par
photograph; a single manually operable adjusting element
ticular format of the photograph which will be repro
for adjusting the position of said pair of stop means with
duced, said pointer member extending at substantially a
respect to said pair of masking elements; and a pair of
45° angle across said scale member.
transmission means cooperating with said single adjusting 70
13. In a masking arrangement for a photographic re
element and respectively with said pair of stop means for
production apparatus, in combination, a pair of masking
transmitting movement of said adjusting element to said
elements one of which extends across the other; a pair of
pair of stop means for adjusting the ‘latter with respect to
stop means respectively carried by said pair of masking
said pair of masking elements, said pair of transmission
elements
for engaging a pair of intersecting edges of a
means maintaining the adjusted positions of said pair of 75
aosassa
light-sensitive paper on which a photograph is to be re
produced so as to determine the location of the paper; and
a single adjusting means cooperating with said pair of
Stop means for simultaneously adjusting the latter with
respect to said pair of masking elements for determining
the width of the border which surrounds the photograph,
one of said pair of stop means including a pair of hell
secting edges of a light-sensitive paper on which a photo
graph is to be reproduced so as to determine the loca
tion of the paper; and a single adjusting means cooperat
ing with said pair of stop means for simultaneously ad
justing the latter with respect to said pair of masking ele
ments for determining the width of the border which sur
rounds the photograph, one of said stop means including
an elongated block, guide means guiding said block for
movement transversely of the masking element which
and an elongated link extending between and pivotally
connected to said pair of bell cranks for maintaining the 10 carries said block, and a pair of stop pins carried by said
block and adapted to engage an edge of the light~sensitive
legs of one of said pair of bell cranks at all times parallel
cranks and a pair of stop pins respectively ?xed thereto,
to the legs of the other of said pair of hell cranks so
that adjustment of one of said pair of bell cranks will
automatically adjust the other to maintain said pair of
stop members at {the same positions relative to the mask 15
ing element which carries said one stop means.
14. In a masking ‘arrangement for a photographic re
producing apparatus, in combination, a pair of masking
elements one of which extends across the other; means co
operating with said masking elements for moving the same 20
to change the size of the photograph; a pair of stop
means spaced from each other and respectively carried by
said pair of masking elements for engaging a pair of inter
paper.
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,472,640
2,250,309
Dye _________________ __ Oct. 30, 1923
Lary _________________ __ July 22, 1941
2,964,998
Middlestadt __________ __ Dec. 20, 1960
123,924
868,696
Austria ______________ -_ Mar. 27, 1947
Germany ____________ __ Feb. 26, 1953
FOREIGN PATENTS
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