摘要:
A device for producing photographic exposures of images appearing on an image screen onto a film platform carrying a plane film comprises a support holding a number of objectives and displaceable parallel to the axis extending through the central point of the image screen and the central point of the film platform. The platform carries one objective fixed to the platform of one magnifying property and four additional objectives which have such magnifying properties that each of them projects the picture field area of the screen on only one fourth of the usable film surface.
摘要:
The apparatus for packing cylindrical stacks of a plurality of disk-like workpieces, particularly covers, positioned beside each other with equal numbers of workpieces, in a jacket made of wrapping paper has at least one receiving trough for the stacks and clamping rails movable laterally into a raised position and raisable and lowerable as well as movable toward each other associated with it for transferring the stack into a wrapping station provided laterally beside the receiving trough with drivable supporting rollers for the stack. At least one pressing roll running parallel to the supporting rollers is lowerable in the wrapping station to the stack and a longitudinally movable carriage is provided with a pressure-limiting contacting member for pressing the stack against a fixed support. A carriage-mounted cutter for cutting away the edge of the paper wrapped around the stack is located on the carriage. The carriage and the support are equipped with folding fingers for forming closed rosettes and mechanisms for applying adhesive closing strips to the rosettes.
摘要:
A device for loading and unloading an X-ray film cassette comprises a housing which has a light-proof closable compartment receiving a film cassette and provided with a sucker for removing a film from and inserting a new film into the cassette, a device for determining a format of the cassette being loaded and unloaded, and a plurality of compartments accommodating film dispensing magazines containing film stacks of different formats. The loading device further includes a control for controlling movements of the dispensing magazines and a drive arrangement provided for each of the compartments for moving an assigned dispensing magazine in an open position thereof from the respective compartment to a region of the transport rollers and back into the respective compartment.
摘要:
An apparatus for processing of sheet films, comprises developing means for developing sheet films and provided with a plurality of chambers through which the sheet films are movable; pumping means for pumping a processing material; drawer receiving compartment; at least one drawer provided with a plurality of containers for liquids required by the developing means and formed so that upon insertion of the drawer into the receiving compartment a communication is established between the pumping means and a respective one of the containers.
摘要:
A device for wet porocessing of photographic films comprises a film processing device and a storage container for storing a processing liquid supplied to the film processing device. The film processing device has a housing which is formed as a container in which a bath of the processing liquid is located and through which a film base is guided by means of rotary inlet rollers, rinsing rollers and squeezing rollers. The pair of rinsing rollers are each positioned in a cage which is extended to form a liquid-distributing channel connected to a respective feeding conduit leading from the storage container. A conduit system for continually renewing the processing liquid in the device is provided.
摘要:
Apparatus for transferring sheets from a relatively wide or relatively narrow stack of sheets into a transporting device has a pair of suction cups which engage the leader of the topmost sheet in the stack and turn it through 90.degree. so that the leader becomes separated from the leader of the sheet therebelow. The suction cups are thereupon raised to the level of the nips of driven advancing rolls in the transporting device to move the leader into a plane which includes the nips and is parallel to the planes of sheets in the stack, and such leader is introduced into the nips so that the advancing rolls engage the leader while the latter becomes detached from the suction cups. The suction cups engage only a portion of the leader of a relatively wide sheet, and the remainder of the leader is flexed with the engaged portion to ensure that it enters a path which is defined by additional advancing rolls of the transporting device simultaneously with entry of the engaged portion of the leader into the nips of the driven advancing rolls. The apparatus can be used with advantage for removal of successive topmost X-ray films from a stack of films regardless of the width and/or height of the stack. The suction cups descend from the level of the nips to the level of the topmost sheet in the stack as soon as the transfer of the preceding sheet is completed and along a path such that each of a series of successive properly stacked sheets is engaged at the same distance from its leading edge.
摘要:
An arrangement is disclosed for projecting an identifying image from a data carrier on to a film in a cassette provided with a window which may be sealed against light. The arrangement has an opening mechanism for pushing a cover for the window open and closed. The arrangement further has a projection mechanism and switch means for triggering the opening mechanism and the exposure. The opening mechanism has an engaging device which is guided on a carriage and engages the window cover. The engaging device, which is held in engagement with the window cover via a spring, may be disengaged from the same in any position of the carriage by means of a lifting mechanism. The lifting mechanism has a crank which is connected with the engaging device and is operable from externally.
摘要:
A fuel supply system for a mixture-compressing internal combustion engine employs a controllable differential pressure for the removal of air from a main air duct into a carrier air duct for proportioning the fuel to be used. The fuel system includes a fuel proportioning device and a vane pump for withdrawing a carrier air flow from the main air duct and for transporting the fuel through feed lines to the internal combustion engine. The pressure of the air at the fuel outlet and the differential pressure for fuel proportioning is controlled by a differential pressure valve located in the carrier air duct spaced from the main air duct. The differential pressure valve has a diaphragm dividing the interior of the valve into chambers with one side of the diaphragm acted upon by the air pressure in the carrier duct between the differential pressure valve and the main air duct. The other side of the diaphragm is acted upon by the pressure in the carrier air duct downstream from the differential pressure valve and also by a variable force depending on the parameters of the engine. To prevent pulsations in the air flow from disadvantageously affecting the differential pressure valve, the diaphragm in the valve is separated by a partition from a space in which such pulsations are effective. The air pressure in the carrier air duct upstream from the differential pressure valve acts in the space and the partition has a nozzle for admitting the air pressure to the one side of the diaphragm.
摘要:
A cassette with two chambers for discrete cut films has a centrally disposed plate-like partition with two identical sides, and a pair of identical covers each of which is adjacent to a different side of the partition and is pivotably attached to the partition by a hinge for movement between an open and a closed position. The covers have exposure apertures and carry slidable plate-like shutters which can slide in slots of the respective covers to permit or prevent entry of light by way of the respective apertures. The film chambers are separated from each other by the central portion of the partition, and the latter further carries locks for releasably holding the covers in their closed positions. The lock for one of the covers is provided at that side of the partition which is adjacent to the other cover, and vice versa. The hinge or hinges for one of the covers are provided on a first marginal portion of the substantially rectangular partition, and the lock for such one cover is provided on a second marginal portion which is parallel to the first marginal portion. The hinge or hinges and the lock for the other cover are respectively provided on the second and first marginal portions of the partition.
摘要:
A fuel-air mixture arrangement with an air-compressing supercharger for a combustion engine with continuous fuel injection into the intake pipe which holds an air quantity meter, a pivotal ram flap and a throttle flap are arranged behind each other. The air quantity meter, depending on its deflection, actuates a fuel metering unit. The fuel metering proceeds at constant pressure drop in the fuel. This pressure drop can be varied depending on certain coefficients, and the pressure drop on a valve is varied by a control pressure valve to which controlling variables are applied. The set pressure drop at the metering cross sections of the fuel metering units is kept constant by the valve operated by the control pressure valve. The air quantity meter is located downstream of the air compressing supercharger and the control pressure valve receives the supercharger air pressure prevailing upstream of the throttle flap via a diaphragm unit. The control pressure valve may be connected to a thermostat located in the supercharger air flow.