Патент USA US2129847код для вставки
Sept. 13, 1938. 2,1 29,847 A. KNODEL WINDING ROLL FILM Filed Sept. 15, 1933 Invem‘or: J By Afforne I _ Patented Sept. 13,1938 2,129,847 UNITED STATES PATENT OFFICE, 2,129,847 WINDING ROLL FILM Adolf Knodel, Dessau in Anhalt, Germany, as signor to Agfa Ansco Corporation, Bingham ton, N. Y., a corporation 01' New York Application September 15, 1933, Serial \No. 689,615 - In Germany September 17, 1932 (01. 242-57) 1 Claim. My present invention relates to winding roll ?lms. which is put on the spindle 3, the paper 6 bearing the printed mark 5 is wound together with a ?lm strip. The bundle of rays 8 emanating from the source of light ‘I is re?ected on the paper strip and thrown on the photoelectric cell 9. The current 5 , One of its objects is an apparatus for winding roll ?lms. Further objects will be seen from the 5 detailed speci?cation following hereinafter, ref erence being made to the accompanying drawing which represents diagrammatically an apparatus according to my invention. - , > / thereby produced is ampli?ed at 10 and is led/to an electromagnet II, the keeper of which onthe‘ one hand controls a stopper i2 (f. i. a stopper _ In winding photographic roll ?lms there is at 10 ?rst wound a certain length of the protective paper strip on the spool, then the motion of the spool is ‘stopped, one of the ends of the ?lm strip ‘ . is inserted under the last paper coil, the spool ' is again set in motion and the ?lm strip is wound -_ gripping frictionally, a ratchet tooth or a ratchet ' controlled electromagnetically) and on the other 10 hand, by way of the lever i3, controls the coupling ' 2. If the current produced by the photoelectric _ cell is not su?icient for controlling the magnet keeper, a relay Illa. may-be combined with the ampli?er at i0 so that the ampli?ed current of 15 16 up together with the protective paper strip; After the whole ?lm strip is wound up, the motion or the photoelectric tube controls the relay Inc the spool is again stopped, the second end of which latter controls the supply of a current suf the ?lm strip is stuck to the protective paper ficiently strong to actuate the electromagnet ll. strip, and ?nally the rest of the protective paper ‘As long as the light rays fall upon the ordinary 20. strip is wound up. It is known to conduct this paper-strip, the magnet is excited and the cousucession of operations automatically or semi pling 2 is maintained in; its operative position, automatically by provision of a step pulley or the that is to say, it is connected with the spindle 3, like that allows of stopping the-means driving IThus the winding spindle is coupled with the the spool after the same has made the required running motor and the paper is wound up, ' If, on 25 number of turns. The driving mechanism may the contrary, the light rays fall upon a black be released either by hand or automatically. printed 'mark, the intensity of the re?ected ray According to this invention the control of the is largely reduced. The keeper of» the magnet roll-?lm winding machine is not e?ected by a falls, whereby the coupling, is interrupted and step pulley or the like means mounted in the the brake shoe 12, in co-operation with the disk 30 machine itself, but by marks provided on the pro It and the gear I5, will immediately stop the tective paper strip to be wound. This allows winding spindle. of winding on one and the same machine, ?lm In order to avoid the application of marks on strips of di?erent lengths without any change the rear side of the backing paper which comes of the‘machlne, the stopping and starting of the into touch with the light sensitive layer of the 35 machine depending only on the marks provided ?lm, the marks may also be applied to a paper on ‘the protective paper strip. strip which is wound on a spool together with 2° , 25 30 35 It would appear obvious to give the marks to . , the roll ?lm, or the apparatus may be provided % be provided on the protective paper strip the‘ with atdevice, for instance, a drum bearing the ' form of notches or perforations which in known‘ marks; 40 manner are scanned by means of a lever. This The source of light naturally emanates light 40 procedure, however, is not advisable as the light of the required color, for instance, red light, when safety of the ?lm-roll would be greatly impaired. winding orthochromatic ?lm, or green when ' According to this invention the marks are winding panchromatic ?lm. printed on the protective paper strip in the form What I claim is: '45 of characters having a color differing from that An apparatus for winding roll ?lm which com- 45 of the protective paper strip. These marks are prises in combination a spindle, means for driv scanned by means of a photoelectric cell which ing said spindle, a clutch connecting one end of transforms the variations of the light intensity said spindle with said driving means, a spool put into current impulses which by way of a relay on the other end of said spindle, a paper strip, 50. act upon the driving means of the machine for secured to said spool and bearing marks, a disk, 50 winding the roll ?lm. _ I will now describe my Rinvention with refer ence to the accompanying drawing. A The spindle 3 is driven by the motor I by way 55 of the detachable coupling 2.‘ On the spool‘! a gearing rotatably connecting said spindle with said disk, an electromagnet, a magnet keeper ex tending with one end into said electromagnet, the other end being provided with a brake shoe, va lever connecting said keeper with said clutch, 55 2 2,12o,e47 said paper strip, a photoelectric tube receiving said beam of light re?ected by said paper strip, an ampli?er connected with said photoelectric tube amplifying the current produced by said phototelectric tube, a relay controlling the sup said electromagnet, so that vsaid keeper is moved into the interior of said electromagnet when said beam of light-strikes said paper strip and falls down when said beam of light strikes said marks thus bringing the clutch into its inoperative posi tion and the brake shoe into its operative posi ply of a current to said electromagnet, said paper tion and vice versa. a source 01' light projecting a beam oi! light on strip controlling by said beam of light said photo electric tube and in consequence said relay and ADOLF KNODEL.