摘要:
THE INVENTION RELATES TO LOD-MEASURING INSTRUMENTS WHICH EMPLOY ELECTRICAL MEANS AS THE LOAD-MEASURING MEANS. IN THE INSTRUMENT OF THIS INVENTION, THE LOAD-MEASURING MEANS COMPRISES A PAIR OF TENSIONED STRINGS WHICH ARE ELECTRICALLY EXCITED TO VIBRATE. A LOAD IS APPLIED TO SAID STRINGS SO AS TO VARY THE TENSION WITH A CONSEQUENT VARIATION IN THEIR VIBRATION FREQUENCY, WHICH INFORMATION IN TURN IS TRANSMITTED TO A DIGITAL DEVICE WHICH TRANSLATES IT INTO A LOAD-INDICATING QUANTITY.
摘要:
An impact printing mechanism comprising a pair of elements which move oppositely of each other so that the algebraic sum of the momenta of the elements is null during their motion and at the instant of impact of one of the elements on an associated printing plate.