| 摘要 |
Ice fishing tip ups which comprise a support structure, a collar, a shaft, a spring, a stop, a spool and a signal device. When the tip up is set for catching fish, the spool can rotate about its axis a limited distance before the spring jerks the shaft upwardly to set the hook. The spool is generally restrained from rotation while the spring is jerking the shaft upwardly. The spool can freely rotate and pay out tine after the spring jerks the shaft upwardly. The tip up structure comprehends a plurality of set positions, including a plurality of notches defining such set positions, and either rolling engagement or sliding engagement of a stop with respect to the notches. In preferred embodiments, the spring and stop are cooperatively sized, configured and mounted such that spring and stud freely move with ongoing interaction with each other without deleteriously impeding each other's activity.
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