Agfa-gevaert Ag

Walter Becherer

Erwin Geyken

Nikolaus Jelinek

Helmut Schausberger

Franz Lechner

Apparatus for removing strips of X-ray film from elongated flat envelopes, wherein the film is flanked by two foils of lead, has a table supporting two blade-like tools whose tips can be introduced into the open front end of an envelope so that each tool enters between a panel of the envelope and the outer side of the respective foil. The envelope is then advanced lengthwise so that the tools penetrate deeper into its interior whereby the envelope is severed along opposite marginal portions of the film by knives which are mounted on one of the tools. One of the panels is introduced into the nip of two advancing rolls downstream of the knives so that the one panel then pulls the envelope forwardly and the envelope is automatically opened by the knives. The leader of the exposed film is connected to the core of a reel which is driven in synchronism with the advancing rolls so that the film is convoluted onto the core of the reel. The separated panels of the envelope are deflected into a bin and the foils are caused to descend by gravity into collecting receptacles between the tools and the reel. The knives have cutting edges which are inclined with reference to the direction of advancement of the envelope.

Apparatus for removing strips of photosensitive material from flat

A strip of exposed film which issues from a developing machine is convoluted onto the core of a horizontal takeup reel whose flange or flanges rest on the peripheral surface of a horizontal roller which is driven to rotate the reel in a direction to convolute the strip. The strip is braked by a tensioning device between the developing machine and the reel, and the latter is thereby maintained in a first position of abutment with the concave internal surface of a first locating device and in contact with the driven roller. A spring-biased lever urges the reel to a second position in which the reel is out of contact with the roller and abuts against the concave inner side of a second locating device. The lever is free to move the reel sideways and to the second position as soon as the action of the tensioning device upon the strip is terminated, namely, as soon as the trailing end of the strip advances beyond the tensioning device. The first locating device is mounted between the second locating device and the tensioning device, and the two locating devices define a gap for the upper portion of the roller. The latter is nearer to the first than to the second locating device and its upper portion is engaged by the flange or flanges of the reel when the latter is held in the first position.

Apparatus for convoluting strips of photosensitive material or the like

A rinsing tank in a developing machine for X-ray films or the like is equipped with a circulating system which draws liquid from the bottom zone of the tank and returns the withdrawn liquid to the upper zone of the tank. The contents of the tank can be evacuated without resorting to any values by using a siphon whose intake end is connected with the suction side of a jet pump in the pipeline for circulation of liquid, the uppermost section of which is located at a level below the normal level of the upper surface of the body of liquid in the tank, and the discharge end of which is connected with a liquid removing pipe. When the pump which causes the liquid to circulate by flowing through the pipeline is arrested, the jet pump is deactivated and allows the liquid in the siphon to rise and to flow into the uppermost section. The liquid thereupon continues to leave the tank in the form of a continuous stream which flows along a second path defined by a portion of the pipeline, the jet pump and the siphon. If the operator wishes to interrupt the evacuation of liquid from the tank, an aerating valve is caused to admit air into the uppermost section of the siphon and to thus break the continuous stream of outflowing liquid. In normal operation, the upper surface of the column of liquid in that section of the siphon which connects the suction side of the jet pump with the uppermost section is located below the uppermost section. The jet pump is installed at a level below the bottom zone of the tank, and the pump which circulates the liquid is located at a level above such bottom zone but below the normal level of the upper surface of the body of liquid in the tank.

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Munich, Germany

Walter Becherer