Latch needle with a fixed spring
AssigneeGroz-Beckert KG
InventorLothar Dehner
Life of this patent
Estimating the term…
Abstract
A latch needle (1) has a leaf spring (8, 8′) that is associated with the latch (4), that is disposed in the sawslot (3) and is held in corresponding bearing seats (14, 15) at the narrow sides or end walls (11, 12) defining the sawslot 3. Each bearing seat (14, 15) has a support surface (18) for the respective end of the spring, and at least one counterpart surface (21), with the respective end (16, 17) of the leaf spring (8) extending between these two surfaces and being held there. The axial or longitudinal play of the leaf spring (8, 8′) is so small that the leaf spring (8, 8′) cannot fall out of the space between the support surface (18) and the counterpart surface (21), even when it is deflected to a considerable extent. The leaf spring (8, 8′) is therefore held securely in the sawslot (3).
Claims17
A latch needle for knitting machines comprising:
- a substantially flat needle shank having a hook at a front end and provided with an elongated sawslot that extends in a longitudinal direction of the needle into the shank from a front side of the shank toward a needle back side and that has two oppositely disposed narrow sides;
- a latch having one end extending into the sawslot and pivotally mounted for pivotal motion about an axis extending transverse to the longitudinal direction of the needle between a closed end position, wherein the latch engages the hook, and a rearward end position;
- an elongated leaf spring disposed in the sawslot and having opposite ends thereof supported in respective bearing seats disposed at the narrow sides of the sawslot, said leaf spring being positioned in the sawslot to engage the one end of the latch with its surface facing the front side of the shank at least during pivotal movement of the latch;
- and,
- wherein the bearing seats each have a support surface for the respective end of the leaf spring and a counterpart surface located opposite the support surface and between which the respective end of the leaf spring extends.
Dependencies are inferred from the claim text.