RU2817731C1 - Method of making dinner forks - Google Patents

Abstract

FIELD: personal and household items.

SUBSTANCE: method of making forks relates to food industry and can be implemented at home. Substance of the method consists in the following: two workpieces of the same length are made from elastic stainless wire d=2…3 mm and their ends are sharpened. Then one of the workpieces is bent in half, similarly the second workpiece is bent. Both workpieces are assembled together and two pads are laid and welded on the handle, fixing and fastening the workpieces together, also the workpieces can be fixed with heat-shrink tubing; Then fork teeth are moved apart parallel to each other at distance of 3 mm between them and, on the side of pads, the working part of the fork is bent along an arc. For making the fork at home, the following is required: an elastic stainless wire, a vice, a hammer, a grinder and a welding machine, in the absence of a heat-shrink tubing.

EFFECT: creation of a simple method of making inexpensive, strong and reliable forks for food intake, which can be made at home.

2 cl, 2 dwg

Description

The invention relates to the food industry and can be used to make ordinary forks at home.

There is a known method for manufacturing food forks by stamping from a sheet of stainless steel. They make two, three and four tooth forks. The method is simple and technologically advanced, the design of the forks is reliable and convenient, the design is close to perfection, but this method cannot be implemented at home.

In terms of technical essence, the method of manufacturing mini-rakes according to the Russian patent [1] is closest to the declared one; it will be considered as a prototype. In this patent, some technological transitions coincide with similar ones in the manufacture of a fork, however, there are also significant differences.

The objectives of the invention are to provide a simple method for making inexpensive, durable and reliable food forks that can be made at home.

The set goals are achieved by making two blanks from stainless spring alloy wire d=2 or 3 mm, then sharpening their ends at an angle of ~15° and bending the blanks in half. After this, fix the handle in two places: at a distance of 0.3 and 0.6 of its length - by spot welding two flat stainless steel plates, the same composition as the workpiece, to four wires, in two places to each. Then the fork teeth are moved apart parallel to each other, forming gaps between them of 3 mm each, then from the side of the lining the teeth on the mandrel are bent radially. The handle can also be fixed using two pieces of heat-shrinkable tubing.

In FIG. 1 shows a side view of the fork, Fig. 2 - view of the fork from below, along arrow B.

The following designations are used here: I, II - the first and second blanks, the length of each of them can be 300, 420, 440 mm and depends on the length of the fork L=150,210 or 220 mm; d=2 or 3 mm - diameter of cold-drawn wire made of a stainless alloy with high elastic properties (for example, 44НХТУ); H1, H2 - welded overlays with a thickness of 0.2...0.3 mm and dimensions

10 x 11 mm x mm;

D=5...7 mm - diameter of the mandrel on which workpiece II is bent in half; - length of teeth;

=120...150 mm - distance to the end of the lining distance to the end of the lining H1; R=25…35 mm - radius of the mandrel on which the teeth are bent; 3 - fork teeth.

The method is implemented as follows: two blanks, for example, 420 mm long each, are made from wire, for example, d = 3 mm, and their ends are sharpened at an angle Bend workpiece I in half, then bend workpiece II on a mandrel D = 5...7 mm in the same way. Next, a handle is formed; for this, four wires of the workpieces are fixed by spot welding two flat plates with a thickness of 0.2 ... 0.3 mm from the same alloy as the workpieces, placing them at a distance of 0.3 and 0.6 of the length of the fork and welding at two points to each of the workpiece wires. First, weld the H2 pad to fix the wires together, and then H1. After which the teeth are moved apart parallel to each other, forming gaps between them of 3 mm each, and from the side of the linings, the teeth on the mandrel are bent along a radius of R = 25...50 mm.

Compared to the known one, the proposed method has the following advantages:

1. Simplicity and the ability to make practical forks at home. This requires: stainless steel wire d=2 or 3 mm, a vice, a grinder and a welding machine (if there is no heat-shrinkable tube).

2. Forks made using this method are lighter in weight than the known ones, comfortable in the hand and durable.

3. They are reliable, elegant and can last a lifetime, maintaining all consumer properties.

Sources of information accepted by the author during the examination:

1. Russian Patent No. 2810669 MPK A01D 7/00, BI No. 1 dated December 28, 2023, “Method of manufacturing mini-rake.”

Claims (2)

1. A method for manufacturing dinner forks, which consists in making a handle and teeth from two blanks, characterized in that the blanks are made of stainless spring alloy wire d = 2-3 mm, their ends are sharpened at an angle of 15° and bent in half, then the handle is fixed in two places: at a distance of 0.3 and 0.6 of its length - by spot welding two flat stainless steel pads of the same composition as the workpiece to four wires, in two places to each, then the fork teeth are moved apart parallel to each other each, forming gaps between them of 3 mm each, after which, from the side of the linings, the teeth on the mandrel are bent radially. 2. The method of manufacturing forks according to claim 1, characterized in that the handle is fixed using two pieces of heat-shrinkable tube.

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