Abstract: There is disclosed a damper for a grand piano, which is simple in construction and can be manufactured at reduced costs by reducing the number of components, the number of assembling steps, and the number of adjustment operations. A damper for a grand piano moves out of contact with strings in a manner interlocked with operation of a damper pedal, to thereby create a damper pedal effect. A plurality of damper levers each have a rear end portion thereof pivotally mounted to the damper rail and each extend forward. Each damper head is connected to the upper side of a corresponding one of the plurality of damper levers and brought out of contact with a corresponding one of the strings as the corresponding damper lever moves upward. A lifting rail is arranged below the plurality of damper levers, for pivotally moving the plurality of damper levers upward simultaneously by being pushed upward when the damper pedal is operated.

Abstract: There is disclosed a damper for a grand piano, which is simple in construction and can be manufactured at reduced costs by reducing the number of components, the number of assembling steps, and the number of adjustment operations. A damper for a grand piano moves out of contact with strings in a manner interlocked with operation of a damper pedal, to thereby create a damper pedal effect. A plurality of damper levers each have a rear end portion thereof pivotally mounted to the damper rail and each extend forward. Each damper head is connected to the upper side of a corresponding one of the plurality of damper levers and brought out of contact with a corresponding one of the strings as the corresponding damper lever moves upward. A lifting rail is arranged below the plurality of damper levers, for pivotally moving the plurality of damper levers upward simultaneously by being pushed upward when the damper pedal is operated.

Abstract: A key is provided for permitting simple attachment of a weight and easy adjustment of a touch load, while using an alternative material for substitution for lead as a material for the weight, to thereby reduce the manufacturing cost. A swingable key body is formed with an embedding hole. The weight is made of a composite material produced by blending a plurality of kinds of materials except for lead in a predetermined blending proportion to have a predetermined specific gravity, and is removably attached to the embedding hole of the key body.

Abstract: A solder alloy which is lead free, consists essentially of, in weight %: Sn; 0<Ag≦4.0; 0<Cu≦2.0; 0<Ni≦1.0; and 0<Ge≦1.0, wherein addition of Ni and Ge to the solder alloy enhances wettability and tensile strength, and prevents formation of an oxide film. Additionally, a solder alloy which is lead free, consists essentially of, in weight %: Sn; 0<Sb≦3.5; 0≦Ag ≦4.0; 0<Ge≦1.0; and at least one first additive selected from the group consisting of (a) 0<Ni≦1.0 and (b) a combination of 0<Ni≦1.0 and 0<Cu≦1.0; wherein addition of Ni and Ge to the solder alloy enhances wettability and tensile strength, and prevents formation of an oxide film.

Abstract: Lead-free alloys of the present invention includes bismuth in the amount of 30 to 58% by weight and one of the following first to fourth compositions in addition to tin as a main component. In the first composition, germanium is present in the amount of 0.1 or less % by weight. In the second composition, silver is present in the amount of 5% by weight or less and antimony is present in the amount of 5% by weight or less in addition to 0.1% by weight or less of germanium of silver. In the third composition, nickel and copper are included, preferably 0.2 or less % by weight or less of nickel and 1% by weight of copper. In the fourth composition, at least one selected from the group of 5 or less % by weight of silver, 5 or less % by weight of antimony, and 0.1 or less % by weight of germanium in addition to 0.2 or less % by weight of nickel and 1 or less % by weight of copper.

Abstract: Provided are a method for manufacturing a suspension element having a pattern of wiring lines and an equipment for the same. The method includes the steps of: preparing a roll of band-shaped sheet used as a substrate of the suspension element; sequentially performing processes to the sheet through a series of processing sections to integrally form the suspension element with the pattern of wiring lines within a predetermined region of the sheet, and transferring the sheet in a wound state like a roll from one of the processing sections to the next processing section.

Abstract: A micromanipulator system is comprised of a microscope, a micromanipulator for three-dimensionally manipulating a fine instrument in the field of the microscope, image pick-up device for picking up an image within the microscopic field, reference position setting device for setting a reference position of the micromanipulator along a height direction, detecting device for detecting a height position of a tip portion of the manipulator as positional information measured from the reference position along the height direction, and a display device for combining the image of the image pick-up device with the positional information detected by the detecting device to display the combined image thereon. The joy stick includes a manipulating lever, X- and Y- axial direction detectors, a control signal generation device, and a push button switch. The manipulating lever is swingable in an arbitrary direction with the center of a base.

Abstract: A micromanipulator system has a stepper motor driven at a microstep, and having a stepping angle which is subdivided in units of a predetermined reference subdivision. A micromanipulator moves an instrument by the stepper motor, and an input device inputs either a moving speed of the fine instrument or a moving position thereof. A present position calculating device calculates a present position of the stepper motor in a virtual subdivision unit which is obtained by subdividing the reference subdivision unit to a preselected subdivision number. A speed calculating device calculates a drive speed of the stepper motor based either on the moving speed or the moving position, which are entered from the input device. An output pulse setting device determines a target output pulse, and an energizing signal outputting device energizes the stepper motor in response to the target output pulse.

Abstract: A micromanipulator system has a microscope, a micromanipulator for three-dimensionally manipulating a fine instrument in the field of the microscope, an image pick-up device for picking up an image within the microscope field, reference position setting device for setting a reference position of the micromanipulator along a height direction, a detecting device for detecting a height position of a tip portion of the manipulator as positional information measured from the reference position along the height direction, and a display device for combining the image of the image pick-up device with the positional information detected by the detecting device to display the combined image thereon. A joystick effects movement in each axial direction of the micromanipulators allows for precise positioning of a fine instrument positioned on the micromanipulator.

Abstract: An apparatus, with an oil damper for damping the closing of a fall board on a main body of a musical keyboard and permits opening of such keyboard without damping when the fall board is opened. The oil damper has a body with a cylindrical chamber, having a stop projecting radially inward, such body being fixed to said fall board. A pivotal member in the chamber having a shaft and a projecting portion on said shaft in said chamber, such shaft extending outwardly from such chamber and through a liquid tight seal at one end of the chamber, the outwardly extending shaft being fixed to the main body. A movable arcuate valve in the cylindrical chamber and slidable on an inner wall of the chamber, such valve having radial portions extending inward toward such shaft and at opposite sides of the projecting portion of the pivotal member.

Abstract: An electrolyte such as a saturated picric acid solution in a cell for measuring electrochemical polarization is placed in contact with an alloy steel such as a CrMoV steel which has been subjected to a high-temperature and stress-applied condition, and a potential is swept between the CrMoV steel and a salt bridge in the cell, whereby the Mo-rich carbide M.sub.6 C undergoes a dissolution reaction at a potential near a specified value and this reaction is visible as the secondary anode peak current, or the second appearance of peak current on the waveform of electric polarization. Since the secondary anode peak current is closely related to the amount of M.sub.6 C precipitation, the progress of degradation in the CrMoV steel can be evaluated by a simple method with good precision.

Abstract: A benzene derivative substituted with a heterocyclic ring represented by the general formula: ##STR1## wherein R represents a cycloalkyl group having 3 to 8 carbon atoms, X represents a halogen atom, and Z represents ##STR2## in which said cycloalkyl group may be substituted with an alkyl group having 1 to 6 carbon atoms, a process for preparing the same, and a herbicidal agent comprising the above compound as an active ingredient are disclosed. The compound has an excellent effect in that the compound exhibits a markedly high herbicidal effect on weeds in the field and the paddy field at a low dose and yet exhibits markedly low noxious effects on main crops.

Abstract: A benzene derivative substituted with a heterocyclic ring represented by the general formula: ##STR1## wherein R represents a cycloalkyl group having 3 to 8 carbon atoms, X represents a halogen atom, and Z represents ##STR2## in which said cycloalkyl group may be substituted with an alkyl group having 1 to 6 carbon atoms, a process for preparing the same, and a herbicidal agent comprising the above compound as an active ingredient are disclosed. The compound has an excellent effect in that the compound exhibits a markedly high herbicidal effect on weeds in the field and the paddy field at a low dose and yet exhibits markedly low noxious effects on main crops.

Abstract: Disclosed are fluorobenzene derivatives, which are important intermediates for producing herbicidal oxazolidinedione derivatives, and methods of producing them. The fluorobenzene derivatives include compounds of a formula (11): ##STR1## where X is a halogen atom, R.sup.3 is a nitro, amino or isocyanato group or R.sup.1 OCONH, and R.sup.1 is an alkyl or phenyl group. Via the intermediates of the invention, oxazolidinedione derivatives can be produced with high yield.

Abstract: Disclosed are fluorobenzene derivatives, which are important intermediates for producing herbicidal oxazolidinedione derivatives, and methods of producing them. The fluorobenzene derivatives include compounds of a formula (11): ##STR1## where X is a halogen atom, R.sup.3 is a nitro, amino or isocyanato group or R.sup.1 OCONH, and R.sup.1 is an alkyl or phenyl group. Via the intermediates of the invention, oxazolidinedione derivatives can be produced with high yield.

Abstract: Disclosed are fluorobenzene derivatives, which are important intermediates for producing herbicidal oxazolidinedione derivatives, and methods of producing them. The fluorobenzene derivatives include compounds of a formula (11): ##STR1## where X is a halogen atom, R.sup.3 is a nitro, amino or isocyanato group or R.sup.1 OCONH, and R.sup.1 is an alkyl or phenyl group. Via the intermediates of the invention, oxazolidinedione derivatives can be produced with high yield.

Abstract: A magnetic marker has a plurality of thin strips or wires of saturatable magnetic material having square .phi.-H characteristics and coercive forces different from each other. Amorphous magnetic material may be used. When the marker is subjected to magnetization reversal by an external magnetic field, variations of magnetic flux corresponding to a plurality of magnetization reversals can be chronologically detected as a voltage pulse train by detecting coils. By processing this voltage pulse train, a pattern can be made, recognized, so that the magnetic marker effectively identifies the kind of article to which it is attached. A magnetic marker reading and identifying apparatus has a plurality of exciting coils for producing a rotating magnetic field, with the axis of at least one of the exciting coils being orthogonal to the axis of at least one other exciting coil. The rotating a.c.

Abstract: An identification method using a magnetic marker including a plurality of amorphous magnetic, thin wires or thin bands which have highly rectangular hysteresis curves and different coercive forces, and are disposed in a parallel fashion with a predetermined separation each other. The magnetic marker is attached to an article passing through the alternating magnetic field. This induces a temporal pulse train in a detection coil, which serves to identify the magnetic marker and therefore the article by pattern recognition of the pulse train. An instrumentation unit stores in advance the occurrence time of each pulse when the magnetic marker passes through the alternating magnetic field with the standard maximum value, and the stored occurrence time (phase) of each pulse is adopted as the reference. A magnetic marker, is identified by passing the marker through a first alternating magnetic field to produce a first pulse train corresponding to the magnetic thin wires or bands.

Abstract: A process is disclosed for preparing 2-chloro-4-fluorophenol which comprises chlorinating 4-fluorophenol with a chlorinating agent in the presence of water. The process according to the present invention has advantages in that the chlorination can be carried out using inexpensive reagents without requiring the use of particular apparatus and under mild conditions, and the desired product can be obtained in good yields and with high selectivity. 2-Chloro-4-fluorophenol obtained in the present invention is useful as a starting material for producing various pharmaceutical agents and agricultural agents.

Abstract: A developing apparatus is disclosed which includes a rotatable development sleeve which carries a non-magnetic one-constituent toner on a surface thereof. When the development sleeve rotates, the toner thereon is transferred to an electrostatic latent image, an elastic blade being urged against the surface of the development sleeve, to ensure that the layer of toner thereon is of uniform thickness. The interior of the development sleeve has a ribbed structure which provides additional structural rigidity.