Abstract: An electronic apparatus comprising a case housing a printer unit. The case includes an upper case portion and a lower case portion. The upper case portion has a first recording medium insertion port, and the lower case portion has a second recording medium insertion port. The angle between the direction in which a recording medium is inserted into the first recording medium insertion port and the direction in which the inserted recording medium is carried in the apparatus is larger than the angle between the direction in which a recording medium is inserted into the second medium insertion port and the direction in which the last-mentioned inserted medium is carried in the apparatus.

Abstract: A variable resistor including terminal leads punched out of a metal plate the end portions of which are arranged to be positioned accurately onto corresponding collector or conductor elements disposed on a base respectively by setting the metal plate at a fixed position, filler elements filling a gap extending between the collector element and the conductor elements and a gap extending between the conductor elements and which prevent an outflow of synthetic resin into the center of a housing during the process of molding the housing and a parallel gap electrode provided with a pair of parallel electrodes which are provided on an unplated surface of the end portions of the lead terminals during the process of welding the terminal leads onto the corresponding collector and the conductive elements respectively.

Abstract: An improved damping system for continuous ink jet printers of the kind having: (i) a print head, including an ink cavity and an orifice plate coupled to the cavity, and (ii) an ink circulation system having an ink supply conduit to the print head cavity inlet and an ink return conduit coupled to the cavity outlet. The damping system reduces ink pressure transients within said print head means and includes: (i) a damping chamber for enclosing a gas-over-ink region that is coupled to the ink return conduit at a location proximate the print head and (ii) a printer subsystem for periodically introducing gas into said ink return conduit upstream of the damper chamber.

Abstract: A thermal printer which uses a thermally transferably ink sheet having an irregular surface comprises heating means for generating heat in response to an input signal applied thereto; first support means for movably supporting a recording sheet and providing a pressure on the recording sheet in a direction toward the heating means; second support means for movably supporting a thermal transfer sheet in contact with the heating means, the thermal transfer sheet comprising a heat resistive base and a thermally transferably ink layer on one side of the base, the layer comprising a mixture of a coloring agent and a hot melt binder, the mixture being transferably to the recording sheet in response to application of heat to the other side of the base, and auxiliary particles distributed in the layer so that they partially emerge from the surface of the layer; means for moving the first and second supporting means; and means located down stream with respect to the heating means for separating the transfer and record

Abstract: A flexible heating assembly includes a plurality of stranded or otherwise combined, insulated electrical conductors including feeder lines and, possibly, additional lines and constituting a subassembly; a heating conductor loops around this subassembly in multiple loops; at least two of the feeder line conductors have spaced apart and staggerdly arranged bare spots of removed insulation exposing the respective electrical conductor and the heating conductor where passing across such a bare area will be an intimate electrical contact making relationship without supplemental fastening; the loop density defined as number of loops per unit length on the subassembly is smaller in between bare spots and higher by at least 20% as to loops contacting conductors in a bare spot.

Abstract: A sheet electrical heating element comprising warp yarns which are constituted of a plurality of warp electrically conductive yarns disposed at predetermined intervals and a plurality of warp electrically non-conductive yarns, one or more of which are arranged in each of said intervals of the warp electrically conductive yarns; and weft yarns which are constituted of a plurality of adjacent weft electrically non-conductive yarns and a weft woven electrode of predetermined length in the warp direction. The woven electrode is constituted of weft electrically conductive yarns forming fancy twill weave together with the warp yarns so that the texture may be loose and flexible.

Abstract: In a line scan fiber optic cathode ray graphic recorder a continuous sheet of light sensitive paper is drawn perpendicularly before a regularly timed intensity modulated beam from the cathode ray tube. Due to gearing inaccuracies and anomalies, the velocity at which the paper is drawn past the beam varies cyclically resulting in a variation in the spacing between each recorded data line on the paper. For higher paper velocities, the recorded lines are closer together, and for lower paper velocities, the recorded lines are farther apart. The closer lines create a darker image band on the paper and the more distant lines create a lighter image band on the paper. The present invention includes paper velocity monitoring means which provides an input signal to a compensation circuit for inversely varying the intensity information of each pixel dot as a function of the paper velocity.

Abstract: A machine for forming parallel corrugations in a metal sheet and for welding each of these corrugations at its longitudinal end, comprises, on the metal sheet side, a bending die comprising two plates perpendicular to the metal sheet defining therebetween a space in which may be engaged a punch or knife perpendicular to the metal sheet. The bending die has, at each of its two lateral ends and on the internal faces opposite its parallel plates, a pair of bending members projecting from the internal faces of the two parallel plates of the die. These two bending members define therebetween a gap substantially equal to twice the thickness of the metal sheet. A welding torch is carried by the bending die and ensures welding of the two lips of the metal sheet in the immediate vicinity of the zone where they are nipped between the bending members.

Abstract: The process of molding thermal insulating blocks and electrical heating units with a mold having a horizontal filter screen in which a slurry containing a mass of inorganic fibers, water, and a binder is mixed to randomly orient the fibers and thereafter poured into the mold and a first portion of the liquid component of the slurry drained through the screen, thereafter vibrating the screen and mold to drain a second portion of the liquid component of the slurry through the screen to produce a filter mat, thereafter drying the filter mat to remove the remaining liquid component of the slurry from the mat, and thereafter heating the filter mat to bond the fibers to each other. An electrical heating element may be mounted on the mold before the slurry is introduced into the mold. The products produced by the process have densities in excess of 30 pounds per cubic foot.

Abstract: A precision resistor exhibiting a temperature coefficient of resistance which is very low and which is virtually independent of time, and capable of accepting high power, comprises a resistive foil applied to a substrate by means of an appropriate cement, wherein the coefficient of thermal expansion of the substrate is either at zero or as close to zero as is possible, and wherein the resistivity versus temperature characteristic of the foil selected is adjusted so as to compensate for the thermal strain induced change in resistance which results when the temperature of the assembly changes, and the device is reacting to the application of power virtually without creating a transient phenomenon due to the flow of heat. Also a method for producing such a precision resistor.

Abstract: The present apparatus concerns round monitoring and includes a portable recording device together with a plurality of keys for indicating different locations through which a watchman is to pass. In order to simplify the drive mechanism of the apparatus, the apparatus comprises a clock movement (20) having an hours shaft on which a disk (34) is mounted having time data print elements (36) disposed around its rear face. A strip of paper (50) is displaced between said print elements (34) and a print hammer (52).

Abstract: A remotely controlled circuit control device has first and second load contact assemblies movable into circuit engagement and circuit disengagement positions relative to one another in which one load contact assembly is operatively connected to a solenoid so that alternate forward strokes of the solenoid moves the one load contact assembly between reset and tripped positions through a push-push mechanism having an indexing portion and a latching portion. An overload mechanism cooperates with the latch portion to cause the load contact assemblies to move to the circuit disengaged position upon occurrence of a fault condition. The second load contact assembly includes pivotably mounted contact members which are linked to the first load contact assembly in such a way that circuit engagement during solenoid energization is precluded.

Abstract: A molded case circuit breaker includes a movable upper electrical contact having a base portion with a slot formed therein for releasably receiving a portion of an elongated spring biased locking pin disposed in a rotatable cross bar of an operating mechanism of the circuit breaker. The locking pin is biased in the slot by a pair of tension springs secured to the cross bar, enabling the upper electrical contact to move in unison with the cross bar. Upon the occurrence of a high level short circuit or fault current of sufficient magnitude, the pin is displaced from the slot enabling the independent rotational movement of the upper contact arm. During such movement, an elongated leaf spring is downwardly deflected and then released by the base portion. Subsequently, the upper electrical contact is prevented from contacting the lower electrical contact by the engagement of the leaf spring with the base portion.

Abstract: A pair of toggle links in a high amperage molded case circuit breaker are driven over center in response to the discharge of a closing spring for pivoting a plurality of blades and closing the breaker contacts. A latch link pivotally connected to the upper toggle link also is engaged by a pivotable latch along an arcuate surface on the latch so that shock forces are transmitted along a radial line of the latch for minimizing inadvertent rotational forces on the latch. The latch release force is rendered dependent on the spring force exerted through the links from the blade overtravel springs and the coefficient of friction of the latch arcuate surface. The force exerted through the links is controlled by an adjustable stop having an inclined surface engaging the pivot connection between the toggle links. Large movements of the stop provide small changes in the inclined surface position relative the pivot connection to provide small changes in the overcenter position.

Abstract: This invention is directed at an electric switch which utilizes a helical spring as a bridging element. The element has each of its terminal ends in moveable engagement with a vertical channel formed in the switch housing. Special forms of fixed contacts provide means of varying the number of circuits that can be activated by the switch. The plunger may also have means of guiding the element in its movement.

Abstract: A circuit breaker for a transmission line includes a plurality of main interrupters and a plurality of parallel resistor interrupters. In order to reduce an overvoltage on the transmission line, the main interrupters are closed at slightly different times.

Abstract: A baseband generator for pulses of high peak amplitude, rapid rise time, subnanosecond duration, and high pulse repetition frequency is disclosed. A plurality of capacitors are charged in parallel then discharged in series to cause a plurality of avalanche of transistors to fire sequentially. The resulting sum voltage across the capacitors is then applied to a step recovery diode to generate the pulse.

Abstract: The disclosure relates to the production by means of an electrical resistance welding method, of grids formed from metal wires crossing over another. The grid wires are carried through between rows of cooperating electrodes and, under pressure, are welded together at the cross points of the wires by an electric current. Each cross point of the wires and the surfaces of the associated electrodes of the grid welding machine, which lie in the welding region, are subjected to the action of a liquid coolant to increase the life of the electrodes and reduce distortion of the grid due to the localized heating of the wires.

Abstract: An electrical switching device having an actuator reciprocable between two extreme positions, the switch being open and closed, respectively, when the actuator is in its two extreme positions. An electrical operator, such as a solenoid having a movable armature, responds to successive momentary energizations by moving the actuator first to one extreme position and then the other. The actuator is mechanically held in each extreme position by a spring-biased element which also serves to transmit movement of the actuator to the switch contacts. The actuator may have a cam surface shaped to cause opening and closing of the switch contacts, the cam surface also cooperating with the spring-biased element for urging the actuator toward each of its extreme positions. The switching device may be used for interrupting electric power to a customer of a utility by being located between a watt-hour meter and the customer's load, or in other similar applications.

Abstract: An apparatus for detecting deflection of a charged ink droplet for use in an ink-jet printer is provided. The present apparatus comprises a support member and an electrode housing containing therein an electrode means for detecting the charge of the ink droplet connected to the support member through a link mechanism, and thus the housing may move relative to the support member. The present apparatus also comprises an adjusting screw which may change the position of the housing relative to the support member after mounting the support member to the base frame of an ink-jet printer. Accordingly, mounting of the present apparatus is greatly facilitated and the electrode assembly may be set in position without difficulty.