Abstract: A firearm, particularly a piston, is provided with a trigger mechanism, which comprises a spring-loaded trigger rod, a trigger for moving the trigger rod, and locking means for preventing a movement of the trigger rod other than by an operation of the trigger. The trigger rod is slidably mounted and guided in the receiver of the firearm for a movement along a straight line. The trigger is directly mounted on the trigger rod for a limited pivotal movement. A spring is provided, which biases the trigger for a forward pivotal movement and exerts a forward tensile force on the trigger rod and when the trigger is in its initial position retains a nose of the trigger in a notch of the receiver.

Abstract: The instant invention is a magnetic field sensor intermittently shielded by a controllable, saturable, magnetic shield. The magnetic shield is periodically driven into saturation by means of an excitation coil. The magnetic field to be measured is not disturbed by the shield during those time intervals when the shield is saturated. Intermittent sensing of the magnetic field to be measured, by the intermittently shielded magnetic field sensor, yields a magnetic field measurement unaffected by l/f noise and offset errors.

Abstract: A photosensitive member for inputting digital light comprises photoconductive fine crystals of a genuine semiconductor or an amorphous semiconductor and having a mean particle diameter of 0.01.mu.-0.5.mu. and a binder embedding the fine crystals and having a volume resistivity of higher than 10.sup.13 ohm-cm. A mixture of the fine crystals and the binder is formed into a photosensitive layer having a thickness of 5.mu.-30.mu. and .gamma. of a latent image of larger than 6. The photosensitive member can be used in various methods of electrophotography.

Abstract: A magnetic brush developing device for use in a copying machine or a printing device includes a developing roller forming a magnetic brush, a developer housing, a developer tank outside the developer housing, a scraper for removing developer from the developing roller after it passes through the developing area on the developing roller, a first carrying device in the developer housing arranged opposite to the developing roller along its entire length for carrying the developer from one end to the other end of the developing roller, for supplying developer to the developing roller during the carrying operation, and for discharging the excess developer into a developer tank, a second carrying device in the developer housing arranged parallel to the first carrying device and communicating at one end of the first carrying device for carrying the developer received from the developer tank in a direction opposite to the carrying direction of the first carrying device, for recovering the developer scraped from the d

Abstract: A transferring device for transferring on a record paper a toner image formed onto an image forming member is disclosed. The transferring device comprises a transfer belt with a dielectric layer formed on a conduction belt member; a driving device for running the transfer belt; a transfer roller for contacting the transfer belt to an image forming member with pressure; a corona charges arranged at a position opposite to the transfer belt for charging the transfer belt with a charge having a polarity opposite to the charging polarity of the toner; a grid electrode arranged between the corona charger and the transfer belt; a plurality of bias sources connected to the grid electrode for biassing the grid electrode at respective potentials; and a change-over circuit for changing over the connection between the grid electrode and the bias source, whereby the grid potentials are selectively changed over in accordance with the characteristics of a record paper to be used.

Abstract: The connector comprises a carrier (1) adapted for fitment to a machine and a holder (130) adapted for fitment to a tool or an attachment. The carrier comprises two elongate hollow members (2), each of which contains a slide (11) situated displaceably therein, a chamber (4), which is situated between the hollow members, and displacement structure (15, 27), for displacement of the slides. The connector has connection structure for the interconnection and disconnection of the carrier and holder. The connection structure includes at least one first connection member (131) on the holder engageable with at least one first connection element (120; 113A) on the carrier, and at least one second connection member (133) on the holder engageable with at least one second connection element (113) attached to the slides.

Abstract: An electrographic printer/copier capable of producing color prints is disclosed. The color printer/copier comprises a housing, a source of paper and an output for the paper after it is imprinted, a photoconductive member, and a developer unit containing toners of multiple colors. On successive revolutions of the photoconductive member, the developer unit applies a different colored toner to the photoconductive member. After each revolution of the photoconductive belt, the image developed in a particular color is transferred to and retained on a transfer belt. When all of the different colored images have been transferred to the transfer belt, a sheet of paper is brought into contact with the transfer belt and the fully developed color image is transferred to the sheet of paper. In a preferred embodiment, the photoconductive member is a vertically aligned photoconductive belt. The transfer belt is horizontally aligned and located above the photoconductive belt.

Abstract: A firearm comprises a chamber member, which is separate from the barrel and defines a chamber and which in a firing block, which is fixed to the receiver, is reciprocable between a firing position and a loading position in a direction which is transverse to the longitudinal direction of the barrel. When the chamber member is in its loading position its chamber is freely accessible and at one end communicates through a loading opening of the firing block with the interior of a magazine holder and at the other end communicates through an ejection opening of the firing block with an ejection shaft. For the performance of the loading and unloading operation, a slider is provided, which is movable in the longitudinal direction of the barrel and carries a feeder, which is movable from a first end position, in which the feeder is disposed on that side of the magazine holder which is opposite to the firing block, past said magazine holder toward the firing block as far as into the loading opening of said block.

Abstract: A rifle comprises a receiver, a firing mechanism mounted in the receiver, a barrel which is detachably connected to the receiver, and a stock, which is detachably secured to the receiver by built-in catches or the like and covers the receiver and the barrel at least in part and is provided with a trigger mechanism and a magazine holder.

Abstract: An improved temperature stable synthetic polycrystalline diamond (PCD) product includes at least one temperature stable PCD integrally and chemically bonded to a matrix carrier support through a carbide forming layer which is of a thickness of at least about 1 micron, the layer on at least one surface of the PCD is in turn bonded to the matrix carrier. A wide variety of shapes, sizes and configurations of such products is achieved through relatively low temperature and relatively low pressure processing. Various products of various geometries are described as well as the details of the processing to achieve chemical bonding of the PCD elements in a variety of support matrix carrier materials to form a unitary structure having a temperature stability up to about 1,200 degrees C.

Abstract: A liquid-friction coupling comprises a liquid-containing housing, a shaft, which coaxially protrudes into the housing, and the interdigitating sets of inner and outer blades, which are axially slidably mounted on the shaft and in the housing, respectively, and are non-rotatably connected thereto. Annular spreading springs are disposed between adjacent inner blades or adjacent outer blades. The distance between adjacent inner and outer blades can be changed by means of an annular piston, which is operable from the outside of the housing. To permit control of the liquid friction coupling within wide limits, the annular piston has a planar inner end face, which extends close to the blades and substantially throughout the cross-section of the interior of the housing. When the piston is in its outermost position the liquid contained in the housing is not in excess of 60% of the liquid capacity of the housing. The liquid has a viscosity of at least 30,000 centistokes.

Abstract: The trigger mechanism of a hand-held automatic firearm comprises a catch lever, which is pivoted on a transverse axis and is provided at its forward end with a pivoted catch pawl, which in a catching position engages a catching lug of a slider to arrest the slider as it moves forwardly from a rear position, to which the slider, which constitutes a part of a firing mechanism of the firearm, has moved against spring force when a round has been discharged. In order to provide such a firearm which has a trigger mechanism which is reliable in operation and can be made at low cost, the catch lever is adapted to be locked in its catching position against the force of a catch lever spring, the catch pawl is pivoted to the catch lever by means which permit a longitudinal movement of the catch pawl and the catch pawl is pivotally supported at its other end on an abutment, which is fixed to the receiver of the firearm.

Abstract: An arrangement for converting a multiphase electric signal into a frequency is disclosed. Illustratively, the arrangement comprises an adder circuit for adding the individual phases comprising said multiphase signal. The arrangement also comprises one first polarity reversing switch for each phase in the multiphase signal. A voltage/current converter is connected downstream of the first polarity reversing switches. At least one second polarity reversing switch is connected downstream of the voltage/current converter. A control circuit generates a periodic switch-over signal for controlling the first and second polarity reversing switches. In addition, a constant current source is connected to an input of the second polarity reversing switch.

Abstract: A convertible single or double spot welding machine operating by the electrical resistance method for producing grids or bar grates by single spot welding or double spot welding, has a transverse row of electrodes and at least one welding transformer on one side of the welding plane. Electrically conductive connections, which pass through the welding plane, connect the welding transformer to the electrodes located on the other side of the welding plane and close the welding current circuit for single spot welding. In order to convert from single spot welding to double spot welding, the connections which pass through the welding plane are removed, selected electrodes on the side of the welding plane remote from the welding transformer are connected in pairs by current bridges, and the supply lines from the welding transformer are respectively connected to the two electrodes opposite the electrodes connected by the current bridges.

Abstract: The problem which has existed heretofore, of maintaining the protection of optical fibers under all circumstances from axial traction loads in cables used for the transmission of data by means of a number of signal transmitting optical fibers by means of electromagnetic radiations of wavelengths under 1 mm, essentially in the longitudinal sense of the fibers and the related problem of being able to exclude completely, even under extreme working conditions, the danger of rupture of the optical fibers during thermal expansion and very strong bending of the cable have been solved by guidance means (7, 9, 10 for the guidance of the fibers (8) on paths (12) located on the inside of at least one cylinder-jacket-shaped shell (13) and assuming an essentially wave-shaped course with excursions (13) in relation to imaginary median lines (11) attributed to each and situated inside the cylinder-jacket-shaped shell (13) in a position which is essentially parallel to the cylinder axis (53) of said shell and which are freel

Abstract: In a hair treatment device with a winding mandrel driven by a motor and used to wind up hair, the current used by the motor is led through a current limiter circuit in order to limit torque. The current limiter circuit comprises an operating stage and a safety stage. The safety stage is utilized to limit current if the operating stage fails.

Abstract: A blade for liquid friction couplings consists of a disk formed with slot- or holelike apertures. In order to ensure that the blades will have a long service like whereas the occurrence of mixed friction (hump) will not adversely be affected, at least portions of the boundary surfaces of the apertures extend at an oblique angle to the surface of the disk.

Abstract: A body relief display device comprises a first torso form shaped as a relief of a body part and including a first outer contour, and a second torso form shaped as a relief of a body part and including a second outer contour, the second torso form being substantially identical to the first torso form. The first torso form is mounted on top of the second torso form. The second torso form also includes a flat surface formed as an extension of the second outer contour. A frame may be mounted on the flat surface. An article of clothing, for example, a swim suit may be fitted onto the first torso form, which is on top of the second torso form. A multiplicity of the devices may be hung by the frames of the second torso forms from a stand. In this way, a multiplicity of different articles of clothing can be presented for viewing and one can leaf through the display devices as the pages of a book.

Abstract: A hand held firearm is provided with a detachable sight and a mount for mounting the detachable sight on the receiver of the firearm. The mount comprises a track, e.g., a rail track, which is provided on the top surface of the receiver of the firearm and adapted to slidably receive the detachable sight, at least one bore, which opens in the top surface of the housing at the bottom of the track, and a screw which is mounted on the detachable sight and extends into the bore. In order to provide the firearm with such a mount which can be operated in a simple and skillful manner, a fixing nut is rotatably mounted in the bore of the receiver. The screw which is connected to the detachable sight is screwed into the nut. The nut is adapted to be forced down in the bore against the force of a spring, and a knurled disk is provided, which is disposed on a laterally open slit of the receiver and is non-rotatably connected to and axially slidable relative to the fixing nut.

Abstract: In a method of increasing the sensitivity of a photosensitive member for inputting digital light, the photosensitive member is prepared to have a steep variation in the value of .gamma. of a latent image formed on the photosensitive member. Digital light and another light are applied to the photosensitive member at substantially the same time. The other light is emitted by an incandescent light, a LED or a fluorescent lamp.