Patent GB-716838-A (GB)
Title: Improvements relating to photographic document copying cameras
IPC: G03B27/50
Filed: 1952-07-31
Abstract: 716,838. Photographic document-copying cameras. DIEBOLD, Inc. July 31, 1952 [Aug. 11, 1951], No. 19378/52. Class 98(1) A flow type photographic copying camera has a magazine containing feed and take-up rolls and removable and replaceable as a unit in a compartment of the camera casing to position a portion of the film in operative relation with continuouslydriven film-feeding means and another portion to receive light from a lens system, and an optical system between the lens system and document feeding means which includes mirrors for reflecting light from the document to the light system over a zig-zag path. As shown in Fig. 2, the casing 23 is of box form with perforations (not shown) in the top, and is supported on enclosing covers 21, 22. Cover 21 has its bottom 21<SP>1</SP> upwards to form a platform for documents to be copied. A flap 32 pivots downwards to permit entry of a corner of casing 23, which has studs 24 entering slots 31 in the cover 21. The cover also has slots 30 in which studs 24 slide when the cover is put on the casing. The other cover 22 is pivoted to the casing at 25 and is held in open position by a catch 36 to receive the documents after copying. Cover 22 has a catch 27 which secures the covers in place when closed, the apparatus then being carried by a handle 26 on cover 21. The casing 23 may also be used alone. Documents to be copied are fed through a slot 39, Fig. 7, to a pair of rollers 42, 43. Roller 42 is in fixed bearings and continuously driven, while roller 43 is journaled in spring- urged pivoted arms 55. The rollers have staggered annular discs which slightly corrugate the document M so that, without further support, it passes substantially horizontally through the copying zone Z<SP>1</SP>, a deflecting plate 61 guiding it out through an exit slot 40. The document at zone Z<SP>1</SP> is illuminated by a row of lamps 63 connected in series and provided with reflectors 64. Light from the document is reflected by mirrors 65. 66, adjustably mounted in the casing on brackets 71, 60 respectively, to a lens system 67. which forms an image on a film strip S through a slit 70 in the lens mounting. The width of the Zone Z<SP>1</SP> of which the image is formed can be varied by rotating a plate 78 on a shaft 77 journaled in the casing, so as to intercept part of the light beam both before and after reflection at mirror 65. A lever attached to shaft 77 extends into a recess in the casing for adjustment. When the document M is inserted it rocks fingers 88 on a shaft 90, which also carries an arm 91 which closes contacts 92, 93 completing a circuit to a solenoid which rotates a U-shaped shutter 83 on a shaft 86 to the position shown. When the document has been copied, the shutter returns under spring action to the position wherein its horizontallyextending arms 84, 85 intercept the light beam. The film S is fed from a supply spool 122 over a bent spring plate 105 which presses the film, through an aperture in the magazine, against the slit 70, and thence under rollers 102 opposite another aperture, to the take-up spool 106. A roller 101. continuously driven by the motor (not shown) which drives roller 42, is journaled on the arm 100 of a lever, the other arm 99 of which rests on shaft 86. When there is no document passing through, arm 99 rests on a flattened part of shaft 86 when roller 101 is out of contact with film S. The entry of a document causes shaft 86 to rotate, rocking lever 99, 100 so that roller -101 is pressed into contact with film S to drive it at the same speed as that at which the image of the document moves over the slot 70. Spool 106 is also driven through a slipping clutch when lever 99, 100 is rocked. The magazine 120 containing the film spools may be removed or inserted by raising a hinged flap 29. When in position, an arm 89 pivoted in the wall of the magazine engages contacts In the motor circuit. This lever also engages the film roll, and when the film is almost exhausted the lever rocks to open the contacts so that the apparatus cannot be started. A guide plate and spring clips may be provided for inserting and retaining the magazine in position. The film apertures of the magazine are opened and closed by a slidable plate operated by an arm on the flap 29, so that the apertures are closed when the flap is closed and opened when the flap is closed. In modifications. (a) the shutter is constituted by a horizontally-rotating blade, with a cam providing vertical movement of roller 101; (b) the roller 101 is mounted on a fixed shaft, and lever 99, 100 is so formed as to raise the film from the roller when there is no document in the apparatus; (c) roller 101 is mounted on a lever which, is pivoted by a separate solenoid.