Claims
- 1. In a hemming apparatus in which flexible segments of sheet material are advanced along their lengths in series along a processing path, folded and sewn, the improvement therein of a folder for folding the segments of the sheet material as the segments are moved in series along the processing path, said folder comprising:
- U-turn guide means for moving the central body portion of the segment through a U-turn;
- first beveled turning means adjacent opposite sides of said U-turn guide means for turning each of the opposite end edges of the segment through a right angle turn inwardly onto the adjacent portion of the central body portion of the segment as the central body portion approaches the U-turn,
- second beveled turning means adjacent opposite sides of said U-turn guide means for turning each of the opposite end edges of the segment through a second right-- angle- turn into overlying relationship with respect to the adjacent portion of the central body portion as the central body portion approaches the U-turn, and
- side folder belts movable through each of said first and second beveled turning means at opposite sides of the U-turn guide to carry the opposite end edges of the segments about the first and second beveled turning means.
- 2. The apparatus of claim 1 and wherein said U-turn guide means includes means for changing the length of the U-turn with respect to the lengths of the two right angle turns whereby the alignment of the leading and trailing edges of the central body portion with respect to the leading and trailing edges of the opposite end edges can be adjusted.
CROSS REFERENCE
This is a continuation-in-part of U.S. patent application Ser. No. 248,790 filed Sept. 28, 1988, which is a division of U.S. patent application No. 111,915 filed Oct. 21, 1987, now U.S. Pat. No. 4,773,341 issued Sept. 27, 1988.
US Referenced Citations (7)
Divisions (1)
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Number |
Date |
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111915 |
Oct 1987 |
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Continuation in Parts (1)
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Number |
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248790 |
Sep 1988 |
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