Tape edge closing machine
AssigneeP. Fanghanel & Company Limited
InventorPeter Frederick Walter Fanghanel
Life of this patent
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Abstract
This invention concerns a tension relieving device to be used in conjunction with a sewing machine in a tape edge closing machine for making mattresses and includes a wheel in advance of the sewing machine to bear against a surface of the mattress to relieve tension in the material of the mattress in order to facilitate feeding the material to the sewing machine and may include a second wheel to assist in maintaining the tension relief.
Claims9
A mattress tape edge closing machine comprising a sewing machine movable relative to a mattress on a carrier therefor;
- means for holding the mattress stationary relative to the carrier;
- a de-tensioning apparatus carried with the sewing machine, a first cylindrical wheel of said apparatus in advance of the sewing head of the machine and means for selectively moving said first wheel into and out of an operative position in which it depresses the upper surface of a mattress on the carrier against the natural resiliency of the mattress so as to relieve tension in an edge part of said upper surface immediately in advance of the sewing head while the mattress remains stationary relative to the carrier.
A mattress tape edge closing machine comprising a sewing machine movable relative to a mattress on a carrier therefor;
- means for holding the mattress stationary relative to the carrier;
- a de-tensioning apparatus carried with the sewing machine, a first cylindrical wheel of said apparatus in advance of the sewing head of the machine, the plane of the wheel being at an angle to the direction of relative movement between the mattress and the sewing machine and means for selectively moving said first wheel into and out of an operative position in which it depresses the upper surface of a mattress on the carrier against the natural resiliency of the mattress so as to relieve tension in an edge part of said upper surface immediately in advance of the sewing head while the mattress remains stationary relative to the carrier.
A mattress tape edge closing machine comprising a sewing machine movable relative to a mattress on a carrier therefor;
- means for holding the mattress stationary relative to the carrier;
- a de-tensioning apparatus carried with the sewing machine, a first cylindrical wheel of said apparatus in advance of the sewing head of the machine and means for selectively moving said first wheel into and out of an operative position in which it depresses the upper surface of a mattress on the carrier against the natural resiliency of the mattress so as to relieve tension in an edge part of said upper surface immediately in advance of the sewing head while the mattress remains stationary relative to the carrier, a second wheel of said apparatus in register with the sewing head and means for selectively moving said second wheel into and out of an operative position in which it depresses the upper surface of the mattress against the natural resiliency of the mattress so as to maintain at the position of the sewing head the tension relief induced by said first wheel.
Dependencies are inferred from the claim text.