| 摘要 |
A pair of fabric members having proximate abutting margins preliminarily united by a row of basting stitches are then fed through a folder device and folded into a three-ply, Z- or S-shaped construction in preparation for a finished seaming operation. As the members pass through the folder device one of the fabric members is folded along a line on one side of the row of basting stitches to underlie the united margins and the other of the fabric members is reverse folded along a line on the other side of the row of basting stitches to overlie the united margins. The aforesaid folder includes a base plate having an upstanding guide rib or scroll and a generally horizontal guide plate. The guide plate is spaced above the base plate and includes a longitudinal edge forming the line about which the one fabric member is folded to underlie the united margins. The guide rib includes an upper edge which, in the upstream portion of the base plate, is curved in a convoluted path to guide the united margins and overlying fabric member up and around the edge of the guide plate, and in the downstream portion of the base plate then forms the edge about which the overlying fabric member is reverse folded to overlie the united margins.
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