发明名称 |
Coil spreader for spiral binding machines |
摘要 |
A binding machine and method for spirally binding a sheaf of papers into a book uses an adjustable speed drive to rotate a flexible plastic spiral element into respective holes in the book. The book has a plurality of holes in a row adjacent one edge of the book to receive the leading edge of the spiral bonding elements. A cylindrically shaped mandrel is spaced apart from a glidable block. The plastic pre-formed spiral binding element is fed onto the mandrel from the distal end thereof, with the leading edge of the binding element facing and spaced apart from the book. A pair of leading edge spreaders, one of which has a guidance groove, engages the plastic spiral to spread its coils just enough to permit it to enter the successive holes of a sheaf to be bound. A trailing spreader at the opposite end insures that the last hole is accommodated with a portion of the spiral coil.
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申请公布号 |
US2002090280(A1) |
申请公布日期 |
2002.07.11 |
申请号 |
US20010003028 |
申请日期 |
2001.11.02 |
申请人 |
SPIEL NORTON;DORISHOOK ROBERT |
发明人 |
SPIEL NORTON;DORISHOOK ROBERT |
分类号 |
B29C53/12;B42B5/12;(IPC1-7):B42B9/00 |
主分类号 |
B29C53/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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