| 摘要 |
A pusher for use in rolling a hoop wherein a length of rod or wire is bent at one end to form a loop which receives the forward end of the hoop to push it and is bent at its other end to form a second loop which receives a circumferentially disposed portion of the hoop to guide the hoop while it is being propelled. The second loop normally is maintained closed by means of a hook which is biased into engagement with an adjacent portion of the wire.
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