摘要:
In a dispensing device for sheet material that includes a draw-off device and a single feed device with at least one draw-off roll, several conveyor rolls (22) arranged side by side with some axial spacing and with mating rolls (24) that are axially offset and are radially adjustable with respect to the conveyor rolls (22), where the mating rolls (24) and at least one of the conveyor rolls (22) that can be driven in the same direction with the former are made of a hard material, a ring-shaped strip (44) made of an elastic deformable material is embedded in the peripheral surface of the conveyor roll (22) that is made of a hard material where the axial width of this ring is smaller than the axial width of the peripheral surface of the conveyor roll (22) and projects radially above the peripheral surface in the unloaded state.
摘要:
An integrated circuit component, particularly a programmable logic array (PLA), includes at least one logic AND-array and a logic OR-array connected thereto. Some of the input lines of the PLA are sued to control the selection of output signals of the OR-array via a multiplexer thereby reducing the complexity and necessary programming of the PLA without a loss of flexibility.
摘要:
Through bolt connection for unilaterally accessible locations. The through bolt has a cylindrical head disposed eccentrically to the centerline of the bolt by a measure e, and a sleeve disposed likewise eccentrically to the sleeve centerline by a distance e. The bolt is received in the sleeve and together they are thrust into the through hole in the parts to be fastened. Head and sleeve are of the same diameter, so that they can be inserted together head-first in the through hole in one single position relative to each other. After the bolt head is located outside the through holes, the bolt is rotated through an angle of 180.degree. to the other side so that now, owing to the eccentricity, the head catches over the edge of the through hole and its bearing surface is in contact with the surface on the inaccessible side. In this position, a nut with washer may be screwed on and tightened with the sleeve performing the function of a locating pin.
摘要:
In a replaceable ribbon cartridge (12) for printers in which the ribbon (14) can be guided out of the cartridge through an exit opening (16) and at the end of a tension segment extending outside the cartridge can be reintroduced into the cartridge through an entrance opening (18), there is arranged on the cartridge (12) in the zone of the tension segment at least one deflection slide (24, 26) displaceable in a direction approximately perpendicular to the ribbon plane between a position of retraction into the cartridge (12) and an extended position deflecting the ribbon (14). Through the deflection slide or slides (24, 26), the ribbon (14) is generally spread away from the cartridge sufficiently so that upon insertion of the cartridge into the printer, it places itself around the printer head. During the last phase of insertion, the deflection slides (24, 26) are retracted, as by means of rams (56) arranged on the printer, so that during the subsequent ribbon advance, the ribbon (14) can become tensioned in its guide.
摘要:
In a hard disk drive with a closed housing (10) enclosing a magnetic disk pack (24,26) and a carrier arrangement (32) for magnetic heads (36), permanent-magnet or electromagnetic erase heads (44,62) are arranged in this which can be operated independently of the magnetic heads (36).
摘要:
In a signal transmission system whose transmission line (16) is connected to a line side component (66, 68) of a respective transmitter (12) and receiver (14) and is electrically isolated from the operating side, the line side component (66, 68) of the respective transmitter (12) and receiver (14) is powered from the operating side over through an isolating DC/DC-transducer (10).
摘要:
In an output circuit for a signal transmission system to generate a bipolar output signal, a power output stage (62) is driven by a data signal and a transmitter release signal via an isolation stage (18) and a logic network (64). The power output stage comprises two complementary transistors whose bases are each separately driven from an output (50, 56) of the logic network (64) so that only one of the two transistors (54, 60) is switched to conducting in the presence of a transmitter release signal corresponding to the polarity of the output signal to be produced and so that both transistors (54, 60) are closed, independent of the data signal, in the absence of a transmitter release signal.
摘要:
A print head for an ink printer is provided with an ink reservoir which is arranged near a plane transversely intersecting the print jet opening. Thereby it is possible to bring the print head into various inclined positions without interfering with the ink feed.
摘要:
Printing or recording apparatus for the selective printing of single sheets or margin-perforated endless paper in which for the endless paper operation a separate conveying unit can be put in place on the printer housing which unit is provided with conveying means engaging in the perforated margin of the endless paper. The sight case of the conveying unit is arranged over the feed opening as well as the delivery unit for the single sheets. A movable lid permits access to these openings for the single-sheet operation but covers these completely and in a soundproofing way for endless paper operation. Connected with the movable lid there is a prop which in the closed position of the lid automatically lifts off the platen the feed rolls not required in this operating state.
摘要:
In the circuit arrangement according to the invention, the two transistors with their main current lines connected in series cause no disturbance of balance in the subscriber's line. By means of exclusively alternating current coupling on the subscriber's lines wire leads, extension elements which cause no galvanic voltage drop can also be connected on. The series connection of the main current lines of the transistors may be run directly to the input of the amplifier emitting the outgoing signals.