摘要:
A nanopowder synthesis system having an autofuser device which obviates the need for external power switches, and which accommodates repeated discharges (of the order of 107) between ablating electrodes of precursor material at a high repetition rate (≧1 Hz).
摘要:
Separate areas of a display board are selectively activated either separately or in various combinations to illustrate a chord diagram, a fingerboard diagram, and/or a musical staff diagram. Lamps in each of the three diagrams are illuminated responsive to the playing of a specially constructed stringed instrument by the instructor to illustrate finger positions in the case of the chord diagram and the fingerboard diagram, and to illustrate musical position of the notes played on the scale diagram. One or more lock-in switches cause the activated lamps to remain lighted after the strings of the musical instrument are released by the instructor. Finally a digital readout lamp associated with each string on the chord diagram illustrates the finger which should be used to depress the corresponding string at the location indicated by the lamp.
摘要:
This portable mailing scale is a small, economical, and accurate balance-type weight-scale, especially suitable for measuring light weight, such as letters, to determine correct postage. Because the scale is of the balance-type, its accuracy is far better than those of the spring-type, especially under light load. Although scales of the balance-type usually require a trial and error leveling or balancing operation and thus are less convenient to use than those of the spring-type, this invention does not require such cumbersome leveling operation.Therefore, this invention combines both the accuracy of balance-type scales and the ease of use of spring-type scales.
摘要:
A multiple lever balance having a main lever supported on a main knife edge, a load input knife edge supported on the main lever, a lever having a load to be weighed applied thereto, a horizontally disposed weighing plate connected with the load input knife edge, and a force member connected with the weighing lever and in rolling contact with the weighing plate to assure that horizontal forces are applied vertically to the load input knife edge.
摘要:
A balance lever is fulcrumed for pivotal movement and a load support above the balance lever is mounted independently of the latter for movement in an upright path between a plurality of positions in each of which the load support has an orientation in space which remains unchanged. Motion-transmitting coupling arrangements couple the load support with the balance lever to impose upon the latter angular incremental displacements which are indicative of the movement of the load support in the aforementioned path.
摘要:
In a condition responsive device, such as a load responsive weighing scale, a rotatably mounted pinion is engaged with a pivotably mounted balanced rack which is movable in response to change in the condition. A spring is provided for urging the rack into engagement with the pinion and for maintaining the meshing force between the rack and the pinion substantially constant during all positions of the rack.
摘要:
A level compensator for a precision and fine balance comprising a balance frame, a balance beam, a support for said beam, a microscale provided on the beam, a screen, and a projection apparatus for the reproduction of a section of the microscale on said screen. The level compensator comprises a pendulum provided on the balance frame for automatic level compensation. The support axis of the pendulum is arranged parallel to the support axis of the balance beam. A light reflecting member is situated on the pendulum and deflects the projection light beam. The center of gravity of the pendulum lies above an imaginary horizontal plane comprising the pendulum support axis and a spring arrangement acts on the balance frame and on the pendulum beyond the support axis thereof whereby the torque exerted by the spring arrangement on the pendulum counteracts the torque brought about by the center of gravity of the pendulum. The center of gravity of the pendulum lies laterally above the support axis of the pendulum. An adjusting weight is adjustable in relation to the support axis of the pendulum.
摘要:
A combination flight simulating mobile device and scale formed in appearance of a variety of different birds, or like flying creatures, that may be fabricated from steel sheet or like material, readily assembled, and balanced in such manner that when suspended, the weight of the wings (12 and 14) of the bird is used to counterbalance both the body (10) of the bird and the weight of a lightweight object (74), such as an envelope, and provide a measurement of the object's weight and a realistic replication of a creature in flight.
摘要:
An apparatus for depositing of reference weights in an electronic scale consisting of two levers swivelable around vertical axes, one end of each lever is always in contact with a cam disc attached on a vertically disposed shaft and the other end of which is developed as a gliding shoe which may be pushed below the lifting tray. By rotating the cam shaft, the lifting trays cause the reference weights to be deposited by the cam discs at first each individually one after the other and then jointly onto the carriers.