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US 2013/0152639 A1Published application
Latch Needle with Improved Latch Bearing
AssigneeGroz-Beckert KG
InventorsJohannes Bruske, Juergen Veeser, Werner Veeser, Jochen Stauss, Eric Juergens
Life of this patent
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Abstract
A latch needle includes a pivot pin connected with the latch in a torque-proof manner, said pivot pin having mirror-symmetrically shaped bearing heads (29, 30) on both sides of the latch shank (20). The bearing heads (29, 30) are produced by plastic deformation (i.e., axial upsetting of a pin (27)) and have a cylindrical exterior shape.
Claims15
Method for the manufacture of a latch bearing of a latch needle, the method comprising:
- providing of a needle base body having a shank in which is shaped a slot, said slot being delimited by two lateral walls;
- forming of two bearing openings in the slot walls, said bearing openings having matching shapes and being in alignment with one another;
- providing of a latch having a latch shank with a latch hole being a through hole, the cross-section of said latch hole being different from the cross-section of the bearing openings;
- positioning of one end of the latch in the slot, so that the latch hole is located in the region of the bearing openings;
- inserting of a pin into the latch hole;
- and
- upsetting the pin on both sides to produce cylindrical bearing heads within the bearing openings.
4 more elements
Latch needle comprising:
- needle base body having a shank in which is formed a slot, said slot being delimited by two lateral walls,
- wherein two bearing holes being through-holes in alignment with one another are formed with matching constant cross-sections through the slot walls;
- a latch having a latch shank with a latch hole being a through hole, the cross-section of said latch hole being smaller than the cross-section of the bearing holes;
- a bearing pin extending through the latch hole and having, within both bearing openings, bearing heads of matching shape, said bearing heads having been produced together by plastic deformation.
1 more element
Dependencies are inferred from the claim text.