摘要:
The leaders of successive topmost sheets of a stack of sheets are lifted by a set of aligned suction cups which move each leader into a horizontal plane including the nip of two advancing rolls. The suction cups insert the leading edge of each leader into the nip and continue to adhere to the leader while the latter is advanced by the rolls so that the leader pulls the suction cups against the opposition of a weak spring tending to move the suction cups and their mobile support to a starting position. The drive for the advancing rolls is thereupon arrested for an interval of time which suffices to ensure the collapse of suction in the cups by arresting the suction pump and by simultaneously opening a valve which connects the interior of each cup with the atmosphere.
摘要:
A mass-transfer column consisting of one or more contact zones. The contact zones are exclusively provided with packings placed in prearranged locations. In the contact zones, optimal operating conditions for the packings are created over the entire height of the contact zones in order to achieve a minimal pressure loss at a concomitant high separating efficiency. This is done by implementing a suitable gradated adaptability of the packing to the vapor and liquid loads varying over the height of the contact zones.
摘要:
A device for the support and oscillation of a continuous casting mould (1) for casting liquid metal, particularly liquid steel, comprising guide elements (4) which are mounted on fixed carrier components (5) and which is actually by means of oscillation devices (6). In order to shorten time required for mounting and dismounting and therefor to lower the down times and costs of said continuous casting device, a first module (7) is made of guide elements (4) and carrier components (5) and a second module (8) consists of the oscillation device (6). The second module (8) can be dismantled via an outlet (9) which extends laterally, perpendicular to the plane of symmetry (2) below the guide elements (4) or in between guide elements (4). Each of the two modules (7,8) can be dismounted or re-mounted in a manner which is temporally and locally independent from the other respective module (7,8).
摘要:
A device and a method for reading out information stored in a storage layer (15), and an X-ray cassette are proposed which make use for the purpose of erasing information stored in the storage layer (15) of an erasing means (11, 12, 14) which generates an erasure radiation (17). This erasure radiation (17) can have both a first and a second intensity, the first intensity being larger than the second intensity.
摘要:
A device is provided for measuring the differential pressure in anesthetic dispensing devices, with which the differential pressure can be measured between two lines (2, 6) for supplying gaseous components to a mixing site (3). The device has at least one differential pressure sensor (11), which is connected with the lines (2, 6) for supplying the gaseous components. Buffer elements (12, 12′) are integrated in the connection between the lines (2, 6) for supplying the gaseous components and the differential pressure sensor (11).
摘要:
A sheet film developing device with a dark chamberside introduction of sheet films to be developed comprises a developing unit, a unit for moving a sheet film to the developing unit, a sheet film supplying unit for supplying sheet films to the developing unit, the sheet film supplying unit including a sheet film stacking device provided with a loading flap openable from outside for inserting a sheet film stack, a pulling device for pulling individual sheet films at a side of a stack opposite to the loading flap, an individual sheet supporting surface associated with the loading flap, a sheet film transporting unit arranged after the pulling device and the individual sheet supporting surface operative for guiding a sheet film from one of the individual sheet supporting surface and the sheet film stacking device in a transporting direction, and a sheet film sensing unit located in a transporting path defined by the sheet film transporting unit and operative for determining the presence of a sheet film on the individual sheet supporting surface and operative for turning off the pulling device and a part of the sheet film transporting unit located at a side of the stack and turning on the individual sheet supporting surface in response to the determining.
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.