RU2818237C1 - Shears for seam cutting (embodiments) - Google Patents

Abstract

FIELD: hand tools.

SUBSTANCE: invention relates to a non-standard specialized hand tool, namely to shears, which are designed for cutting sewn or stitched labels (tags, articles, etc.) from clothes but can be used in other fields as well. Shears comprise two lever parts, each of which has a working part at one end, and on the other end of the handle, the parts are connected to each other with the possibility of movement relative to each other, on the working part of one of the parts there is a longitudinal slot open at the end for the input of the cut material, wherein said slit forms a web above the slit and a web under the slit, wherein the web above the slit and the web under the slit in the region of the slit has minimum possible thickness. In the first embodiment of the shears, the specified longitudinal slot for the cut material input is made with the width in range of 0.15–0.3 mm. In the second embodiment of the shears, a closed longitudinal slot is made on the working part of one of the shears parts, the width of which is in range of 0.15–0.3 mm. In the third embodiment of the shears, on the working part of one of the shears parts there is a longitudinal slot open at the end, as well as a closed longitudinal slot, the width of which is in range of 0.15–0.3 mm.

EFFECT: possibility of accurate and fast label cutting without damaging the product seam.

3 cl, 22 dwg

Description

Field of technology

The invention relates to a non-standard specialized hand tool, namely, scissors, which are designed for cutting sewn or attached labels (tags, labels, articles, etc.) from clothing, but can also be used in other areas.

Prior Art

Labels are necessary attributes of clothing. They contain information about its country of origin, manufacturer and/or supplier identifier, size, data on the composition of the material, etc. The label may contain instructions for caring for the product. Being inside clothing, labels made of silk, polyester, and other materials, including polymers, can cause discomfort to the wearer, especially a child or an elderly person. If labels are sewn into translucent fabric of clothing, they can “shine through” the fabric, thereby worsening the appearance of the product. If labels are attached to such stretchy fabric, they may stick out or become brittle, which can also detract from the appearance of the garment.

For these reasons, labels are cut off. In the absence of a special tool, labels are cut off with scissors available in everyday life, for example, manicure scissors. The use of such a tool carries the risk of damaging the fabrics and/or threads that make up the seam, which carries the risk of accidental damage. Therefore, when cutting labels, try to avoid bringing the cutting edges of the scissors as close as possible to the seam. The ability to cut accurately in this case is difficult, the need to be careful does not allow labels to be cut quickly, and the size and shape of the part of the uncut label that remains after the cut may be sufficient to cause physical discomfort to the wearer and/or deteriorate the appearance of the product.

The closest analogue to the claimed scissors in terms of the totality of essential features are Safety scissors (US2272753 publ. 02/10/1942). These scissors contain two lever parts, each of which has a working part at one end, and a handle at the other end, the parts are interconnected with the ability to move relative to each other, on the working part of one of the parts there is a longitudinal slot open at the end for entering the cut material material, forming a sheet above the slot and a sheet below the slot. The longitudinal slot open at the end for entering the material to be cut has a fixed width sufficient to make a cut, and at the same time the slot is narrow, preventing a finger from getting into it. Conventional scissors are designed to eliminate the V-shaped hole between the cutting edges in the open position, into which the material to be cut would normally be inserted, but into which the user's finger could become entangled. The use of such a tool for near-suture cutting does not reduce the risk of damage to the tissues and/or threads that make up the seam and, accordingly, the risk of accidental damage.

Disclosure of the Invention

The objective of the present invention is to create a tool for weld cutting in the form of scissors.

For this purpose, scissors for weld cutting are proposed, containing two lever parts, each of which has a working part at one end and a handle at the other end, the parts are interconnected with the ability to move relative to each other, the working part of one of the parts is open at the end a longitudinal slot for entering the material to be cut, forming a blade above the slot and a blade below the slot. According to the first option, the scissors differ in that the width of the slot is made in the range of 0.15-0.3 mm, and the blade above the slot and the blade under the slot in the slot area have the minimum possible thickness. According to the second option, the scissors differ in that on the working part of one of the parts there is a closed longitudinal slot, the width of which is in the range of 0.15-0.3 mm, and the blade above the slot and the blade under the slot in the slot area have the minimum possible thickness. According to the third option, the scissors differ in that on the working part of one of the parts there is a longitudinal slot open at the end, as well as a closed longitudinal slot, the width of which is made in the range of 0.15-0.3 mm, and the blade above the slot and the blade under the slot are in the slot area has the minimum possible thickness.

For all variants of the claimed scissors, the fabric of the working part of the part, located around the slot, prevents the fabric and/or threads that make up the seam from getting on the cutting line, eliminating the risk of damage. In this case, the blade above the slot and the blade under the slot also serve as a stop when tensioning the cut label. The ability to tension the cut label helps ensure that the working part of the scissors with the slot fits as tightly as possible to the seam and, accordingly, the edges that are closed during the cutting process are as close as possible to it. In this case, the cut turns out to be neat, and after the cut, a minimal remnant of the label of the correct shape is formed near the seam.

The proposed scissors allow you to insert the label to be cut into the longitudinal slot of the working part of one of the parts, hold it, pressing the edge of the fabric under the slot and the cutting edge of the other part to the seam as much as possible, and carefully cut the label without damaging the seam. This is a new technical result achieved by the claimed invention. For a heat-affected cut, it is essential that the working part of one of the parts has a longitudinal slot for entering the cut material, the width of which is as close as possible to the thickness of the cut material, because the smaller the gap with which the cut fabric enters the slot, the less likely it is that the fabric and/or threads from the seam onto the cutting line. In this case, unlike the prototype, the width of the slot can be variable for the same scissors. It is also essential that the web above the slit and the web under the slit in the slit area have the minimum possible thickness, since in this case the edges can be brought as close as possible to the seam, in which case the remainder of the cut label will be the smallest.

If necessary, the edge that the blade has under the slot can be made cutting, as in the prototype. However, in the claimed scissors, the working part of one of the parts has a regular cutting edge, and the edge that meets it during the cutting process is on the blade under the slot of the working part of the other part, therefore, unlike the prototype, in the claimed scissors the edge that the blade has under the slot , may not be cutting.

Brief description of drawings

Fig. 1 – scissors, general view;

fig. 2 – fragment of scissors; the working part of one of the parts has an open longitudinal slot;

fig. 3 – working part of the part, which has two open slots of different sizes;

fig. 4 – working part of the part, which has an open slot of variable width;

fig. 5 – working part of the part, which has a closed slot;

fig. 6 – working parts of parts having a straight end, top view;

fig. 7 - working parts of parts having a rounded end, top view;

Fig.8 – working parts of parts having a pointed end, top view;

fig. 9 – fragment of scissors, where the blade above the slot and the blade under the slot have a rectangular cross-section of the same thickness;

fig. 10 – fragment of scissors, where the blade above the slot and the blade under the slot have a rectangular cross-section of the same thickness; the working part having a cutting edge is located with a gap in relation to the blade above the slot;

fig. 11 – fragment of scissors, where the blade above and below the slot has a rectangular cross-section of different thicknesses; the working part having a cutting edge is located with a gap in relation to the blade above the slot;

fig. 12 – fragment of scissors, where the blade above the slot and the blade under the slot have a rectangular section of the same thickness and are supplemented with stiffening ribs; the working part having a cutting edge is located with a gap in relation to the blade above the slot;

fig. 13 – fragment of scissors, where the blade above the slot and the blade under the slot have a non-rectangular cross-section; the working part having a cutting edge is located with a gap in relation to the blade above the slot;

fig. 14 – fragment of scissors, where the blade above the slot and the blade under the slot have a rectangular section of the same thickness; the blade under the slot has an overhead blade; the working part having a cutting edge is located with a gap in relation to the blade above the slot;

Fig. 15 – a fragment of scissors, where the blade above the slot and the blade under the slot have a rectangular section of different thicknesses; the slot is made at an angle to the cutting plane; the working part having a cutting edge is located with a gap in relation to the blade above the slot;

fig. 16 – cutting process, where the blade above the slot and the blade under the slot have a rectangular cross-section;

fig. 17 – cutting process, where the blade above the slot and the blade under the slot have a non-rectangular cross-section;

fig. 18 – fragment of scissors in the cutting process, where the blade above the slot and the blade under the slot have a non-rectangular cross-section;

fig. 19 – cutting diagram – input of cut material;

fig. 20 – cutting diagram – approaching the label to the seam and tensioning it;

fig. 21 – cutting diagram – cutting off the label;

fig. 22 – fragment of scissors, where the blade above the slot is processed to form a cutting edge.

Carrying out the invention

The proposed scissors contain lever parts 1 and 2, each of which has a working part at one end, and at the other end, as in this example, a handle in the form of a ring 3. Parts 1 and 2 are interconnected with the ability to move relative to each other, which in this example it is implemented using hinge 4.

The working part of part 1 has a cutting edge 5, and the working part of part 2 has a longitudinal slot 6, forming a blade 7 above the slot and a blade 8 below the slot. The blade 7 has an edge 9 located with the possibility of closing along the cutting line with the cutting edge 5 of the working part of the part 1. To increase the cutting efficiency, the edge 9 can also be made cutting. To do this, it can be processed under the cutting edge or made with an overhead blade 10 (Fig. 14). There may be other options for the design of edge 9.

To reduce wear of the cutting edge 5, it is preferable to provide a constant gap 11 between the working part of the part 1 and the blade 7 for the length of the cutting edge 5 (Fig. 10, 11, 12, 13, 14, 15, 18).

The working part of part 2 may have one open slot (Fig. 1, 2), two (Fig. 3) or more open slots. It may have a variable width slot (Fig. 4), a closed slot (Fig. 5), or a combination of both. This variability will allow you to use scissors to cut labels of different thicknesses.

The longitudinal slot can be made perpendicular to the cutting plane or at an angle to it (Fig. 15). The slot can have the most convenient entrance for inserting a cut label into it, as is shown, for example, for an open slot (Fig. 19).

The working parts of parts 1 and 2 may have a straight end 12 (Fig. 6). However, to “smooth” the corners of the uncut remainder of the label and/or reduce the risk of damage to the seam and/or ease of use of scissors, the working parts of parts 1 and 2 may have a rounded end 13 (Fig. 7) and/or a pointed end 14 (Fig. 8) .

This example shows the dimensions of the slot 5 available in the working part of the scissors part 2 for cutting a standard label 15 with a width of 40 mm and a thickness of 0.1-0.25 mm. The slot length for this label can be approximately 45mm. It should be taken into account that the smaller the gap with which the cut fabric fits into the slot, the less likely it is that fabric and/or threads from seam 16 will get onto the cutting line. Thus, the optimal slot width can be in the range of 0.15-0.3 mm. In this case, the minimum possible thickness of the web 7, as well as the web 8 in the slot area, will ensure that the edges 5 and 9 are as close as possible to the seam 16 (Fig. 18). The remainder of the cut label 17 in this case will be the smallest (Fig. 18).

It should be taken into account that in order to bring the edges 5 and 9 as close as possible to the seam 16 (Fig. 20), tension of the label is necessary, which requires the rigidity and strength of the part 2. The specified requirements can be met, including the cross-sectional shape of the profile of the sheets 7 and 8. Depending depending on the material and method of manufacturing part 2, web 7, like web 8, can have a rectangular cross-section of the same (Fig. 9, 10, 12, 14, 22) or different (Fig. 11, 15) thickness. To ensure the rigidity and strength of part 2, where the web 7, like the web 8, has a rectangular cross-section of the minimum possible thickness, you can use, for example, stiffeners 18 (Fig. 12).

In fig. Figure 13 shows a fragment of scissors, where blade 7 and blade 8 have a non-rectangular cross-section, while in the slot area, blade 7 has the minimum possible thickness “a”, and blade 8 has the minimum possible thickness “b”.

From the standpoint of the rigidity and strength of part 2, a closed slot, all other things being equal, may have an advantage over an open slot.

Lever parts of scissors can be made by known methods from metals, alloys, polymers, composites, other acceptable materials, including powder materials, as well as their combinations.

The scissors may contain lever parts interconnected with the ability to move relative to each other using a hinge mechanism.

Scissors can have opening limiters of lever parts of various designs, as well as opening mechanisms, for example, springs, which can be twisted, conical, disc, torsion, flat, spiral and others.

The operation of scissors is described using the example of cutting fabric labels. The label 15 is inserted into the longitudinal slot 6 of the working part of the part 2 (Fig. 19). Holding and pulling the label, press the working part of part 2 and, accordingly, the edges 5 and 9 as close as possible to seam 16 (Fig. 20), then close the working parts of parts 1 and 2 and cut off the label along the cutting line (Fig. 21). The cutting line is shown with a dashed line in Fig. 16, 17. The label is cut off without damaging the seam; the uncut remainder has the correct shape and minimal dimensions.

It is obvious that the operating principle of the proposed scissors can have wider application. This principle can be used in scissors containing structural elements of various shapes and sizes, as well as their different relationships with each other. The choice of shape, size and relationship between the structural elements depends on the type of work performed by the scissors. The shape of lever parts, for example, can have various kinds of bends. Scissor handles can be made in the form of round, oval or curved rings, including open ones. Handles can be straight, curved or other shapes. The working parts of the lever parts may have different distances to the hinge, handles, etc.

Scissors can be used for household, sewing, sewing-leatherworking and other work, as well as for working not only with clothing, but also with other products, including products made from materials with different properties. These include, for example, a sleeping bag, a raincoat-tent, a backpack, a sports bag and similar products.

The proposed design of scissors can be improved. So, if the top of the fabric above the slot is sharpened under the cutting edge (Fig. 22), then the scissors can be used to cut off other hidden attributes of clothing. These include, for example, a plastic tie for attaching tags, a bag with a piece of spare clothing material, and spare buttons. Using scissors with a blade edge above the slit, you can cut threads to join pairs of clothing, such as socks, gloves, a hat-scarf pair, etc.

Thus, the proposed scissors are a new specialized tool for convenient and accurate seam-side cutting, the use of which will eliminate the possibility of accidental damage to the seam of the product, minimize the risk of discomfort for the wearer, and cut labels not only neatly, but also quickly, which is convenient for the user.

Claims (3)

1. Scissors for weld-weld cutting, containing two lever parts, each of which has a working part at one end, and a handle at the other end, the parts are interconnected with the ability to move relative to each other, on the working part of one of the parts there is a longitudinal open at the end a slot for entering the cut material, wherein the slot forms a blade above the slot and a blade under the slot, characterized in that the width of the slot is made in the range of 0.15-0.3 mm, and the blade above the slot and the blade under the slot in the slot area has the minimum possible thickness. 2. Scissors for heat-affected cutting, containing two lever parts, each of which has a working part at one end, and a handle at the other end, the parts are interconnected with the ability to move relative to each other, on the working part of one of the parts there is a slot for entering the cut material material, while the slot forms a web above the slot and a web under the slot, characterized in that a closed longitudinal slot is made on the working part of one of the parts, the width of which is made in the range of 0.15-0.3 mm, and the blade above the slot and the blade under the slot in the slot area has the minimum possible thickness. 3. Scissors for heat-affected cutting, containing two lever parts, each of which has a working part at one end, and a handle at the other end, the parts are interconnected with the ability to move relative to each other, on the working part of one of the parts there is a slot for inserting the cut material material, wherein the slot forms a web above the slot and a web under the slot, characterized in that on the working part of one of the parts there is a longitudinal slot open at the end, as well as a closed longitudinal slot, the width of which is made in the range of 0.15-0.3 mm , and the web above the slots and the web under the slots in the slot area have the minimum possible thickness.