This is the optional sleeve piece. Like other brands, Butterick pattern pieces were marked with notches, which indicated where parts of a garment should join, and perforations, which denoted the grain of the fabric and where the piece would be sewn.

From "Make it yourself": home sewing, gender, and culture, 1890-1930 by Sarah A. Gordon

Creator(s)
Subjects
  • American: 1900-present
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  • Butterick 1449 Sleeve This is the optional sleeve piece. Like other brands, Butterick pattern pieces were marked with notches, which indicated where parts of a garment should join, and perforations, which denoted the grain of the fabric and where the piece would be sewn.