PH25973A - A cutting tool for making rattan strands - Google Patents

Description

SPECIFICATION Toh PATENTE, 3

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A CUTTING TOOL FOR MAKING RATTAN STRANDS, wo, RECRTYED “<i R0§ SC

BACKGROUND OF THE INVENTION oT

Rattan strands or strips are usually cut from a natural rattan pole by using ordinary cutting tool, either manually or with the aid of a machine. As is known in the prior art, stripping or cutting of rattan pole into strands is normally done by extrusion process wherein a pole is forcibly fed through a cutting blade thereby producing several strands in a single pass. The blade formation consists of combination of cutting edges so arranged in a manner as to produce clrcular shaped rattan wickers or strands. There is no particular concern regarding the cross-sectional shape of the strands. As long as they are of generally rounded shape, these strands are effective enough to serve their intended purpose that is to be woven into furnitures or wrapped around reject poles resulting to a twisted or straight grooved rattan pole. This 1s the process adapted in rattan industry for the manufacturing of nwicker weave" furnitures. Such kind of rattan furniture manufacture 1s one of the alternative options In the industry to remedy the lack of supply of large diameter natural rattan poles and to make use of reject poles.

A breakthrough in rattan industry is the introduction of a multi-layered enlarged rattan pole with superior physical and design features equally comparable, Lf not better, than large-diameter natural rattan poles. A rattan pole is diametrically enlarged and strengthen by adhesively bonding longitudinally one or more layers of juxtaposed interlocking rattan strands around the surface thereof. This is disclosed and taught in my patent application bearing Serial No. 40299.

Possible enlargement of a rattan pole primarily rests on the features of the strands making up a layer.

The most important of such features is the cross-sectional shape of the strands that serves or functions as an interlocking means in assembly.

Since it is a prior practice in the industry to produce rattan strands or wickers without giving particular regard to their shape, a problem that has something to do with the kind of cutting tool to be adapted has been associated with the production of multi-layered enlarged rattan pole.

SUMMARY OF THE INVENTION

The present invention seeks to overcome the above-mentioned problem of the art by providing a . cutting tool for making rattan strands adapted to be installed on an extrusion machine, that 1s capable of producing several rattan strands which are of particular or distinct cross-sectional shapes in a single pass.

Said cutting tool comprises a generally cylindrical unitary body made of heat-treated steel with cutting blade formation shaped in a certaln pattern defined by distinctly shaped longitudinal perforations so as to produce accurately the exact cross-sectional shapes of the strands adapted for a multi-layered enlarged rattan pole.

It is therefore the main object of the present invention to provide a cutting tool for making rattan strands that is capable of producing strands of particular and distinct cross-sectional shapes In a single pass of a rattan pole fed thereto by extrusion process.

Another object thereof is to provide a cutting tool for making rattan strands that can extrusibly cut a rattan pole into strips or strands with a remarkable speed and accuracy. 8till another object thereof is to provide a cutting tool for stripping rattan poles that can be manufactured or mass-produced by using locally available indigenous material and local technology or know-how.

BRIEF DESCRIPTION OF THE DRAWING

These and other objects, features and advantages of the present invention will become apparent and appreciated upon reading the following detalled description taken in conjunction with the accompanying drawings, in which:

FIGURE 1 is a perspective view of a preferred embodiment of the present invention shown in half-section designed to produce concavo-concave and circular shaped rattan strands;

FIGURE 2 is an elevational front view thereof;

FIGURE 3 is an elevational rear view thereof;

FIGURE 4 is an elevational plan view thereof in half section as shown in Fig. 1; gees re por TT - 3

—_— —-— —_——e_—_—— 25973

FIGURE 5 is a frontal view of another embodiment of the present invention adapted to produce concavo-convex shaped rattan strand;

FIGURE 6 is a frontal view of another embodiment thereof adapted to produce chevron-shaped rattan strands;

FIGURE 7 is a frontal view of another embodiment thereof adapted to produced rhomboid-shaped rattan strands;

FIGURE 8 1s a frontal view of another embodiment of same adapted to produce tearlike-shaped rattan strands.

DETAILED DESCRIPTION OF THE DRAWING

Referring now to the drawings in detail wherein like reference numerals designate the same parts all throughout therein, there is shown in Fig. 1 a preferred cutting tool 10 for making rattan strands 11 of concavo-concave and circular cross-sectional shapes.

Said cutting tool comprises a generally cylindrical unitary body 12 having beveled front section 13. A plurality of equally spaced V-shaped cutting blades 14 with frontal cutting edges 15 radially extends from the peripheral surface of said beveled front section. Said cutting tool is provided with a cutting blade formation 16 having frontal cutting edges 17 formed by a pattern of longitudinal perforations 18 drilled through sald body. To facilitate attachment of said tool to an extrusion machine M, said body is being counterbored at the rearward end thereof.

The preferred embodiment of the present invention has its pattern of longitudinal perforations being defined by a plurality of juxtaposed alternating concavo-concave and clrcular-shaped perforations 19 and 20, respectively, circularly arranged around a central aperture 21 thereof. The frontal peripheral edges 22 of said perforations are sharpened so as to function as cutting edges of said blade formation.

A second embodiment of the present invention is shown in Fig. 5 in a frontal view wherein said pattern of longitudinal perforations is defined by a plurality of clrcularly juxtaposed concavo-convex shaped perforations 23 thereby producing exactly the same shape of rattan strand cross-sections.

A third embodiment thereof is shown in Flg. 6 wherein sald pattern is defined by a plurallty of circularly juxtaposed chevron-shaped perforations 24.

Figure 7 shows a fourth embodiment of the present invention wherein said pattern of longitudinal perforations is defined by a plurality of circularly juxtaposed rhomboid-shaped perforations 25.

The last embodiment herein disclosed is shown in

Fig. 8 depicting a plurality of circularly juxtaposed tearlike-shaped perforations 26 defining said pattern of longitudinal perforations.

In operation, a rattan pole 11A is extrusibly made to pass through sald cutting tool from the forward direction. Extrusion process wherein sald pole is cut into a plurality of strands coming out at the rear

— — eee —_— — 25973 portion, then commences. Accuracy of cutting is achieved due to the sharpness of the peripheral cutting edges of sald perforations. Excess strands 11B resulting from the process are gulded through by the V-shaped cutting blades. The resulting core severed in the process has its way through the central aperture drilled on said body.

In assembly, sald cutting tool is securely installed on sald extrusion machine consisting mainly of an arrangement of feed rollers to extrusibly guide the rattan pole. With such a set-up, mass-production of rattan strands with distinct shape is readily attained with high accuracy and production speed.

It will thus be seen that the objects set forth above, among those made apparent from the preceding . description, are efficiently attained and, since certain changes may be made in the above construction without departing from the spirit and scope of the invention, it is indeed that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

It is also to be understood that the following claims are intended to cover all of the generic and specific features of the invention herein described, and all statements of the scope of the invention which, as a matter of language, might be sald to fall therebetween.

Claims (6)

What we claim is: 2 5 97 3

1. A cutting tool for making rattan strands adapted to be installed on a rattan extrusion machine, comprising: S a generally cylindrical unitary body having beveled front section; a cutting blade formation provided forwardly of said body consisting of a pattern of longitudinal perforations, ‘the frontal edges of which define a plurality of cutting edges; a plurality of equally spaced wedge-shaped cutting blades with frontal cutting edges, radially extending on the peripheral surface of said beveled front section; sald body being counterbored at the redward end thereof.

2, A cutting tool according to claim 1 wherein said pattern of longitudinal perforations through which a rattan pole is extrusibly made to pass is defined by a plurality of b juxtaposed, alternating concavo-concave and circular-shaped perforations circularly arranged around a central aperture; wherein the frontal peripheral edges of said perforations are sharpened to serve as cutting edges of said blade formation.

3. A cutting tool according to claim 2 wherein sald pattern of longitudinal perforations is ] defined by a plurality of circularly juxtaposed concavo-convex-shaped perforations.

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4. A cutting tool according to claim 2 wherein said pattern of longitudinal perforations is defined by a plurality of circularly juxtaposedly chevron-shaped perforations.

5. A cutting tool according to claim 2 wherein sald pattern of longitudinal perforations is defined by a plurality of circularly juxtaposed rhomboid-shaped perforations.

6. A cutting tool according to claim 2 wherein said pattern of longitudinal perforations is defined by a plurality of circularly juxtaposedly tearlike- shaped perforations. \ EDUARDOXR. YREZABAL and fain 22