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Sewing machine

  • US 5,037,021 A
  • Filed: 05/24/1989
  • Issued: 08/06/1991
  • Est. Priority Date: 09/11/1984
  • Status: Expired due to Term
First Claim
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1. A stapling machine for inserting the staple in a substrate, comprising means defining a slot open toward the substrate, the slot being configured to receive at least one staple having opposite end portions which are spaced from one another to define a gap therebetween, means for drawing a double layer of the substrate into the slot and through said gap, means for forcing one of said staple end portions through the double layer of substrate, said drawing means including a channel communicating with said slot for supplying suction thereto to effect said drawing in of the double layer.

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