Bird scarer resembling hovering bird of prey - emits alarm cries, is mounted on post, incorporates cable winch

摘要

A bird-scarer consists of a cruciform cross section post (1) along which is moved an imitation bird of prey (2). The post passes through a cruciform hole in the imitation bird. Above the point at the bottom of the post is a flange on which is a flange on which rests a spring carrying a deflector plate. The top of the post has a partition (9) on which is a cable winch (10) an electric battery (11) a loudspeaker (12) and a control (13) Struts from the partition floor (9) hold a mushroom-shaped roof (3) open underneath. Between the partition (9) and the planes formed by the bottom edge (16) of the roof (3) is a space for the imitation bird. The cable winch has an electric motor with transmission gear (19) on which is a cable drum (20) wound with thin or nylon wire.