JPS61186558A - Fiber operation apparatus and its production - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to hand-held braiding devices such as knitting needles or crochet needles, and more particularly to such hand-held braiding devices which are usually formed from plastic and other non-metallic materials. related to equipment.

BACKGROUND OF THE INVENTION Fiber handling devices such as knitting needles and crochet needles made from plastics and other non-metallic materials have highly desirable properties in terms of surface smoothness and quietness of operation. Their biggest drawback is that they tend to be rather soft, and when used continuously for long periods of time, the heat of the hands can soften them to the point where they become inconvenient during use. Is Rukoto.

Problems to be Solved by the Invention The present invention is intended to provide a structure that eliminates the above-mentioned drawbacks.

SUMMARY OF THE INVENTION A fiber handling device according to the present invention includes a rigid core pin enclosed within a sheath of different materials, the device having at least one end thereof, depending on the application in which it is used. specially shaped.

The device may be formed with a point at one end and a knob at the other end. Alternatively, the device can be formed with points at both ends and such a device can be used as a knitting needle. Alternatively, the device may be formed with a hook at at least one end thereof, and such a device may be used as a hook.

The core pin may terminate at least at one end slightly short of the sheath, which may optionally be shaped at that end as a point or as a hook.

Alternatively to the above configuration, the center pin projects beyond the sheath at at least one end of the device, and the center pin may then be formed with a point or a hook, as the case may be.

The surface of the core pin may be roughened to obtain a strong bond between the core pin and the sheath.

The sheath material may be a non-metallic material such as plastic, in which case the device may be formed by extruding or molding the sheath material in a softened state around the core pin. Alternatively, the core pin may be applied with the sheath material by dipping the core pin into the sheath material while the sheath material is in a semi-liquid state. Alternatively, the sheath material in a liquid or semi-liquid state is
Spray 1q against the core pin.

Alternatively, the sheath material has a low Il! It is a metallic material, such as aluminum, which has anti-corrosion and non-corrosion properties, and can be electroplated or chemically deposited onto the core pin.

The core pin may be formed from a ferrous material such as steel or hard brass.

Because of the support provided by the core pin, the material of the sheath is selected for its low friction and sound dampening properties rather than for its stiffness. In conventional configurations, stiffness is the most important requirement and compromises are always forced to be made with respect to other desirable properties.

The invention will now be explained by way of examples with reference to the accompanying drawings.

In the drawings, reference numeral 1 indicates a core pin made of a metal material, and reference numeral 2 designates a sheath made of a material different from that of the core pin 1, which surrounds the core pin 1.

In the construction shown in FIG. 1, the core pin 1 is completely enclosed within the sheath 2. In the construction of FIG. 2, separate knobs 3 are attached to the ends of the core pin 1 and the sheath 2. In Figures 3 and 4, the core pin 1 extends through the sheath 2 to form a point. In FIG. 5, the hook shown has a core pin 1 completely enclosed within a sheath.

In FIG. 6, the core pin 1 itself projects beyond the sheath 2 forming the hook 4 of the hook.

In practice, the structure of the invention makes it possible to select the most suitable materials for the core pin 1 and the sheath 2 separately from each other, thereby obtaining a device with the best overall properties for a particular purpose. It is.

[Brief explanation of drawings]

Figure 1 is lla! 1; FIG. 2 is a partially cut-away top view showing an alternative construction of the device of FIG. 1; FIGS. 3 and 4 show a view of the knitting needle A partial top view showing yet another alternative structure; FIG. 5 is a partially cutaway top view showing one structure of the device formed as a hook; FIG. 6 is a partial top view showing an alternative structure of the device formed as a hook. FIG. On the drawing, 1 is the "heart pin"; 2 is the "sheath"; 3 is the "knob"; 4
indicates the "hook part".

Claims (8)

[Claims] (1) A fiber handling device specially shaped at least at one end for performing fiber manipulation operations, characterized in that it comprises a rigid core pin (1) enclosed within a sheath (2). (2) In the fiber manipulation device according to claim 1: the core pin (1) has a sheath (2) at least at one end thereof;
), characterized in that said sheath (2) is specially shaped at said one end depending on the application of said device. (3) In a fiber manipulation device according to claim 1: a core pin (1) projects beyond the sheath (2) at at least one end of said device, and the core pin (1) itself is suitable for use in said device. A fiber handling device, characterized in that it is specially shaped at said one end accordingly. (4) In the fiber manipulation device according to claim 1: the surface of the core pin (1) is roughened to strengthen the bond between the core pin (1) and the sheath (2). A fiber manipulation device characterized by: (5) A method for manufacturing a fiber manipulation device according to claim 1, characterized by comprising the step of extruding or molding a softened sheath material around the core pin (1). A method of making a fiber manipulation device. (6) A method for manufacturing a fiber manipulation device according to claim 1, characterized in that it comprises the step of: dipping the core pin (1) into the sheath material while the sheath material is in a semi-liquid state; A method for manufacturing a fiber manipulation device. (7) A method for manufacturing a fiber handling device according to claim 1, characterized in that the method comprises the step of: spraying the sheath material in liquid or semi-liquid form against the core pin (1); How to make an operating device. (8) A method for manufacturing a fiber handling device according to claim 1, characterized in that it comprises the step of electroplating or chemically depositing a metal material on the core pin (1). A method of making a fiber manipulation device.