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Патент USA US2411694

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Nov. 26, 1946.
Filed July 17, 1942
2 Sheets-Sheet 1
Nov. 26, 1946.
Filed July 17, 1942
2 Sheets-Sheet 2
' gl ‘\ jPaierlf’lace
Patented Nov. 2c, 1946
Robert Place, _Waltham. Mesa, asslgnor to
Graphic Micro?lm Service. Inc., Waltham,
Mass, a corporation of Massachusetts
Application July 17, 1942, Serial No. 451,329
2 Claims. (01. 88-24)
This invention relates to improvements in
cameras or printers and. may conveniently'be
~ embodied in a combined continuous camera and
printer. The principles of the invention are par
ticularly applicable to continuously operated
micro?lm cameras and/or printers.
tographlo or printing ?eld it, the said photo
graphic ?eld being de?ned by a slotted shield
20 positioned inside the casing to. The camera
or printer i2 is positioned slightly off-center
from the ?eld l8 for a reason hereinafter ap
parent. As best shown in Fig. 4, the upper roll
The invention has for its principal objects the
ers it are idlers and the lower rollers 16 are
multiple magni?cation with a single lens and
driven. A ?xed plate or floor is provided at this
?xed camera height together with synchroniza
portion of the casing through which the lower
tion of lens reduction to ?lm movement whereby 10 rollers i6 project to engage the sheet feed ma
manuscripts of various sizes may be photo
graphed or enlargements produced at various
Disposed inside the shield 20 are light sources
reduction ratios.
22 for the purpose of illuminating manuscripts
The invention contemplates in general the
positioned in the photographic ?eld when the
adjustment of lens ratio with a given gear ‘ratio 15 device is positioned in the photographic ?eld.
and, as such, avoids the di?icuities heretofore
At the exit end of the photographic ?eld and
encountered in attempts to provide a gear ratio
beyond the series of rollers it a curved guide
in synchronism with a given lens ratio.
member 24 is positioned to receive sheets from
Among other objects of the invention is to
the endmost rollers i6 and guide the same into
enable the use oi a long focal length lens at 20 a suitable hopper indicated in dotted lines at 26.
relatively close range. The use of a long range
The camera or printer indicated at i2 is pro
lens is of particular advantage in micro?lming
vided with conventional ?lm reels 28, ?lm guides
. in view of its greater area of high resolving
3% for positioning the film in front of a suitable
condenser lens system 32 behind which a light
In the particular embodiment of the inven~ 25 source 35 is provided for purposes of printing.
tion herein described and illustrated a re?ector
It will be understood that the light sources 22
system is interposed between the camera and
and 3B operate alternatively according to whether
manuscript feed bed in the case of photograph
the device is used for photographing or printing.
ing and between the printer and feed bed for
Coming now to the important feature of the
the sensitized paper in the case of printing.
30 invention, a front surfaced mirror 36 is support
In the accompanying drawings:
ed at a ?xed position inside the casing id in po
Figure 1 is a side elevational view partly
sition to intercept the line of projection between
broken away to show the internal working
the sheet material in the ?eld i8 and the film
mechanism and illustrating the image re?ecting
in the camera or printer i2. From the mirror
mirrors in one selected position;
35 36, in the case of printing, the line of projection
Figs. 2 and 3 are diagrammatic views looking
is diverted to a front surfaced mirror iii! posi~
at right angles to Fig. 1 and showing the re
tioned in an upper part of the casing, and from
?eoting mirrors in other di?erent adjusted posi
tions; and
the mirror iii the projection line is directed onto
its entirety by the numeral i2. It will be un
plementary action in various relative positions.
the ?eld area of the bed. The mirror at is mov~
Fig. 4 is a perspective view of the device of 40 ably supported in the casing lit by means of a
Fig.1 partly broken away to show the feed bed
bracket 42 carrying an opposed gear 63 and roll
drive means and means for operating the camera
ers 4d engaging opposite sides of a rack 46 which
or- printer at selective speeds.
is ?xedly supported in the casing by bracket 48.
Referring more particularly to the drawings
Crank 50 keyed to the gear :33 may be rotated
wherein likev numerals refer to like parts, the de 45 in order- to vertically position the mirror 40
vice of Fig. 1 includes a housing represented at
along the length of the rack 46. Either or both
it) supporting at its upper portion a combina
mirrors 3B and iii are suitably supported for
tion continuous camera and printer indicated in
slight pivotal movement to maintain their com
derstood, however, that either a camera or a 50 Also it is understood that the mirror 36 may be
printer may be employed instead of the com
blned aparatus illustrated. The lower portion
of the housing i0 is provided with a mouth It
mounted for vertical movement in addition to
or in lieu of the mirror 40.
whlchleads to a series of rollers it for the pur
While movable mirror 40 is capable of minute
adjustment relative to the complementary mir
pose ot conveying sheet material across the pho
55 ror 38, in ordinary operation the mirror 40 is
A; r
shifted to one of a plurality of predetermined
positions to coordinate the lens reduction ratio
with the given gear ratio or operating speed ‘of
the camera. For example, the mirror as shown
1. In a device or the character described. ices
ing having a camera mounted at one end thereof,
said camera including: a lens, a ?lm gate, and
positioned at the top of rack 48 in Fig. 1 to give
the maximum throw to complementary mirror
36 is arranged for highest reduction ratio. A
vertically toward the other end of said casing. a
selected intermediate position of the mirror 6d a
means for advancing the ?lm through said gate;
the optical axis of said lens extending downward
housing within said casing positioned at the
other end thereof and including document ad
is represented diagrammatically in Fig. 2 to pro
vancing means, a source of illumination for
vide an intermediate reduction ratio, and in Fig. 10 throwing an illuminated area on said advancing
2 a mirror 40 is positioned at the calibrated point
means to be successively traversed by documents
A indicated intermediate the length of rack 48
advanced therethrough, a slot formed in said
in Fig. 1. Fig. 3 is a diagrammatic illustration
housing in alignment with said illuminated area.
of the mirror 156 arranged for minimum reduc
the axis of said illuminated area framed by said
tion ratio and in this instance mirror Mi is pre 15 slot extending vertically within said casing to
sumed to be positioned at the calibration indi
ward said ?rst mentioned end and spaced apart
cated at B on the rack 46 in Fig. 1.
from the axis of said lens, inclined mirror means
Since the degree of magni?cation of the image
cutting the axis of said lens and supported near
said housing, a support in said casing adjacent
as a?ected by the mirrors @6 and to must be
compensated for in the camera or printer drive, 20 to the axis of said illuminated area, and a sec,
ond inclined mirror means movably carried on
a variable drive of any suitable character such
as illustrated in Fig. 4 is provided. Herein a
said support and cutting the axis or said illumi-iv
drive chain 68 is trained over a driven sprocket
62 for advancing the ?lm within the camera or
nated area, at least one of said mirror means
selectively trained over reduction gears 64, 66 or
(58 driven by a motor M. In a convenient manner
means with one another and with both said axes
as said movable mirror means is moved to vari
of manipulation an idler sprocket It is adjust
ably positioned adjacent the chain 60 in order to
take up the tension according to the driving gear 80
selected. The motor M also drives the rollers it
through the sprocket 8B keyed to shaft 82 and a
take-o?' from the shaft 82 drives the sprocket.
84 for rotating the reduction gears 66, 66 and 88.
It will be apparent that with the mirror posi 35
tion as shown in Fig. 1 for maximum reduction,
the smallest diameter drive sprocket M will be
employed; that for the intermediate position of
ous relative positions on said’support, whereby
a continuous light path is formed between said
being supported for slight pivotal movement to
printer i2 and at its other end is adapted to be 25 maintain complementary action of said mirror
the mirrors as shown in Fig. 2 which provides in
illuminated area and said lens for all adjust
ments of said mirror means.
2. In a device of the character described, 9. cas
ing having a camera mounted at one end there
of, said camera including; a lens, a ?lm gate and
means for advancing the ?lm through said gate;
the optical axis of said lens extending toward
the other end of said casing, a housing within
said casing positioned at said other .end and in
cluding document advancing means, a source of
termediate ratio reduction, the drive sprocket 86 40 illumination for throwing an illuminated area
on said last advancing means to be successively
will be used; and that for the mirror position
traversed by documents advanced therethrough,
indicated in Fig. 3 which provides minimum ratio
a slot formed’ in said housing in alignment with
reduction, the large drive sprocket 58 will be uti
and framing said illuminated area; the axis of
lized. The lens of the camera or printer it may
said framed illuminated area extending longituof course be adjusted to suit the reduction ratio
dinally within said casing and spaced apart from.
- In the device illustrated the camera or printer
the axis or said lens, inclined mirror means
?xedly supported in said casing near said hous
i2 and the sheet material conveying means rep
ing and cutting the axis of said lens, a support;
resented by the rollers it may be synchronously
driven in any suitable manner, a convenient de 50 ing boss on the wall of said casing adjacent to
vice therefor being disclosed in my copending
the axis of said framed illuminated area, rack
application Serial No. 358,452, ?led September
means secured to said support, a mirror support,
movably carried on said rack and including a
26, 1940.
pinion, the teeth of which engage the teeth on
It is believed that ordinary operation of the
device will be readily apparent from the above
said rack, a second inclined mirror means mount
ed on said mirror support and cutting said sec- '
description. It is, of course, desirable to photo
ond axis, the inclination of said mirrors being \
graph at the lowest possible reduction, so that
the lowest ratio as exhibited by the mirror posi
such that a continuous path is formed between
said slot and said ?lm gate, crank means for ro
tion of Fig. 3 will be employed for index cards,
bank checks and materials of comparable size 60 tating said pinion and adjusting said last mirror
means along said rack and consequently chang
in contrast with the highest ratio reduction as
shown by the mirror position in Fig. 1 which is
ing the length of said path, at least one or said
particularly adapted for large size blueprints, and
mirror means being pivotally mounted on its sup
engineering drawings, the intermediate ratio be
port and adapted to be adjusted to maintain.
ing best adapted for material such as newspaper 65 said continuous path for various adjustments of
sheets, smaller blueprints, correspondence ?les,
said second mentioned mirror means, and means
It is understood that the speci?c device herein
illustrated and described is exemplary only of the
principles of the invention as de?ned in the fol 70
for changing the relation' of the movement of the
?lm in said camera with respect to the move-i
ment of said documents through said advancing.‘
means in accordance with the length of said path.
lowing claims.
What I claim is:
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