Sewing – Special machines – Embroidering
Patent
1990-09-18
1992-02-25
Schroeder, Werner H.
Sewing
Special machines
Embroidering
112 8005, D05C 1508
Patent
active
050903411
ABSTRACT:
A hand-held tufting mending gun has a housing to which a pneumatic cylinder is fixedly mounted, the piston rod of the cylinder being connected to a needle drive member. The needle drive member is a gear rack and has its teeth in mesh with a pinion gear, the pinion gear in turn meshes with another gear rack formining the drive member of a yarn manipulating plunger. A hollow needle is attached to the forward end of the needle drive member and a yarn manipulating member is attached to the front of the plunger drive member. The piston of the pneumatic cylinder is double acting and pushes the needle drive member to drive it forwardly and pulls it back to drive it rearwardly, the action being controlled by operator influenced valving. As the needle moves forwardly, the plunger moves rearwardly and vice versa. An operator influenced trigger may control valving such that each depression and release of the trigger cycles the piston once to form one stitch, or may control valving which results in a series of stitches slowly being formed while the trigger is depressed. The single stitch or the slowly formed stitches provide an operator with control so that stitches may be inserted at precise locations to correct faults in a carpet being produced.
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Izaguirre Ismael
Ruderman Alan
Schroeder Werner H.
Spencer Wright Industries, Inc.
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