| 摘要 |
<p>Device (11) for stringing rackets (6), whereby the tractive power to be exerted on the string is exactly determined previously and continuously exerted on the string, in such a manner that this tractive power is being maintained during the whole operation. This device (11) comprises two levers (12,13) which are freely pivotably mounted with respect to a common support (16); on the free end of one of these levers (12,13) means (22) wherein a string of a racket (6) can be fixed; at one end of the second lever (13) means allowing it to pivot to and fro about its pivoting centre (15); between the aforesaid levers (12-13), elastic means allowing to transmit the to and fro motion of the aforesaid second lever (13) to the first lever (12); adjustably fixed with respect to one end of the aforesaid elastic means, a microswitch and, firmly fixed to the second end of the aforesaid elastic means, means constituting a stop that can cooperate with the aforesaid microswitch.</p> |
