Patents Assigned to Pennsylvania Sewing Research Corp.
  • Sewing machine attachments
    Patent number: 4363280
    Abstract: Sewing machine attachment comprises a substantially horizontally extending positioning member having an open cavity therein, at least a portion of the cavity walls defining a seat for a magnetizable accessory and magnetic means within the positioning member for producing a magnetic flux which extends from the seat through the opening to the cavity for attracting the accessory. At least a portion of one wall of the cavity, preferably the bottom wall, is removably mounted on the positioning member.
    Type: Grant
    Filed: August 11, 1980
    Date of Patent: December 14, 1982
    Assignee: Pennsylvania Sewing Research Corp.
    Inventor: Carl Lindquist
  • Belt-conveyor ironing machine
    Patent number: 4164083
    Abstract: Ironing machine comprises a belt conveyor positioned above a stationary ironing plate, means for maintaining the relative horizontal positions of the plate and the conveyor, and means for raising the conveyor from the plate. There is unobstructed access to one side of the machine when the conveyor is in the lowered, operating position.
    Type: Grant
    Filed: December 7, 1977
    Date of Patent: August 14, 1979
    Assignee: Pennsylvania Sewing Research Corp.
    Inventor: Aaron Glassman
  • Hemmer attachment for a sewing machine
    Patent number: 4120252
    Abstract: Hemmer attachment comprises guiding walls arranged to fold a margin of a body of material to form a hem. The guiding walls include a stationary outer portion and a movable inner portion mating with the outer portion. The device includes means for translating the inner portion away from its mating position with the outer portion and then rotating the inner portion away from the outer portion.
    Type: Grant
    Filed: September 7, 1977
    Date of Patent: October 17, 1978
    Assignee: Pennsylvania Sewing Research Corp.
    Inventor: Aaron Glassman