摘要:
The process for measuring relative angles between a measuring platform and measuring points provides at least one light ray (f.sub.1, f.sub.2) fanned into a flat band. This light fan is swivelled around an axis of the measuring points light is reflected back to the measuring platform, as soon as the light fan impinges on these reflecting means. The measuring platform has counters, which count continuously until the arrival of a reflecting signal at the measuring platform. The respective next reflecting signal stops at the next provided counter. A counter is provided to count with the same counting pulse, during the entire, predefined angular range, in which the measuring points are to be acquired. From the ratios of the counts stopped by the reflecting signals, to the count of the counter that is still counting, the angle of the corresponding measuring point is calculated. Preferably two light fans (f.sub.1, f.sub.2) that are preferably at right angles to each other are provided.
摘要:
Two horizontal parallel heddle rails connected by heddles have center portions secured to a single vertical supporting rod whose lower end is engaged by an oscillating cam follower so that the heddle rails and heddles are reciprocated with the single supporting rod. The ends of the heddle rails are preferably guided in vertical grooves of stationary vertical guide bars.
摘要:
An elongated supporting sleeve is to be introduced into a longitudinally extending curved interior cavity of a fractured tubular bone. It is curved in at least substantial conformance with the curvature of the bone cavity and has an internal passage extending longitudinally and through which an expander rod of similar curvature extends. At the front end of the supporting sleeve is located an expansion element which, when the expander rod is withdrawn in axially rearward direction through the passage of the supporting sleeve, is expanded into engagement with the inner walls bounding the bone cavity. An instrumentality is provided for so withdrawing the expander rod that it will perform only a rearward axial movement but will not turn.
摘要:
This invention relates to a filling device for preventing overflow of liquid-containing tanks during the filling thereof and includes a liquid inlet unit having a float controlled valve designed to close to prevent further flow of liquid into the tank when the liquid therein has reached a predetermined level and an air inlet unit having a float controlled valve which prevents venting of air from the tank when the liquid therein has reached a predetermined level, so that the air pressure in the tank would build up quickly to prevent introduction of additional liquid.
摘要:
Unipolar acoustic pulses of relatively large amplitude and short duration are formed by driving an electroacoustical transducer with a generally staircase-shaped waveform, advantageously through a low pass filter. The applied waveform is formed by linearly summing constituent electrical pulses of preselected amplitude, duration, polarity, and relative time of occurrence. The transducer driving signal acts to reinforce the transducer output in the desired direction, while opposing its output in the reverse direction.
摘要:
A machine tool having a carriage adjustable in an inclined guide arranged on a column. A tool head having a work spindle is arranged so that the spindle is perpendicular to the driving axis of the tool head. The tool head is driven by means of a driving motor and gearing provided therefor and is pivotable and lockable about an axis which is parallel to the front of the column. A transversely movable carriage is adjustably supported on the inclined carriage and is adjustable in a horizontal guide which is perpendicular to the front of the column. An adapter is pivotally and lockably secured to the transversely movable carriage about an axis which is perpendicular to the front of the column. The adapter has a torque transmitting means connecting the drive shaft of the gearing to the drive shaft of the tool head. The adapter includes means for releasably connecting a plurality of different types of tools to the tool machine to thereby improve the versatility of the tool machine.