SK6157Y1 - Hand saw with integrated protractor - Google Patents

Abstract

A hand saw with integrated protractor has in a frame (2) clamped toothed blade (1), there on the stainless blade edge (1) of saw is marked a common vertex (3) all of the target angles, of which the stainless blade edge (1) is one arm and the second arm being the joint of the vertex (3) with corresponding sign (4), permanently marked on the circuit of the frame (2) saw.

Description

SK 6157 Υ1

Technical field

The solution belongs to the area of hand tools for cutting material such as wood, metal etc. It is an arrangement for handheld measuring equipment without machine drive.

BACKGROUND OF THE INVENTION

Hand saws have always been used for easy material separation. Sometimes it is simple and easy to cut a part of a larger whole. Quite common requirements are for material separation at a prescribed or specified or simply required angle. The cutting line is marked with a needle, pencil and the like on the material to be cut. by measuring the desired angle with a protractor or using a preformed template, or sometimes by calculating from rectangular triangles. The disadvantage of these procedures is the need for additional equipment.

The essence of the technical solution

This disadvantage is overcome by a treatment according to this invention which combines the hand saw and the protractor into one tool. Its essence is that on the arc of the hand saw frame in which the cutting blade is attached, they are marked with signs of the angular measure against a line whose direction is determined by the stainless edge of the saw blade. The top of each angle is common to all angles and can be anywhere on the edge of the saw blade, for example, in the center. The advantage of the proposed solution is simplification and thus faster work. In many cases, where such a method of operation is sufficient and convenient, it will save the cost of a separate protractor.

BRIEF DESCRIPTION OF THE DRAWINGS

The solution is shown in the accompanying drawings, where FIG. 1 represents the solution itself and FIG. 2 illustrates the application of the invention in an exemplary embodiment.

EXAMPLES

In the exemplary embodiment, the hand saw is provided with an arcuate metal frame 2 in which the toothed cutting blades are clamped. In the center of the toothed blade 1, on its smooth, non-toothed side, a common apex 3 of all angles of the protractor thus prepared is indicated. The apex 3 of the angles may be indicated by a permanent mark in the form of a line, or by a small cut-out on the toothless edge of the saw blade 1, or in another permanent manner corresponding to the purpose of the tool. The angles of the angles indicated by the characters 4 in the form of lines 4 are indicated on the saw frame 2 from the apex 3 of the angles, the orientation of the angle being the second angle arm being the toothless edge of the saw blade 1. In an exemplary embodiment, angles of 30 °, 45 °, 60 °, 90 ° are plotted and marked from one end of the saw in a clockwise direction (from left to right) and analogously from the other end of the saw in a counterclockwise direction (from right to left). The angle division can be more detailed up to the level of character resolution and legibility. Their designation may be, e.g. point or otherwise.

The practical application of the technical solution is shown in FIG. 2. Place the angle 3 on the edge of the plate 5 at the beginning of the cut, and rotate the saw so that the necessary angle mark 4 on the saw frame 2 coincides with the edge of the plate 5. After this adjustment, or with a needle, respectively. by another means of line 6 of the future section. In the case of a wider board that exceeds the saw size, line 6 is extended as necessary by moving the edge of the saw blade 1, or by placing a longer ruler, or just a straight slat, on the line 6 so far indicated.

Industrial usability

For industrial production, mass production of the frame is possible, while production costs are negligible. The hand saw thus gains an added utility value with which it could become an interesting business item.

Claims (2)

A hand saw with an integrated protractor having a toothed blade clamped in a frame, characterized in that the blade (1) and the frame (2) are at the same time a protractor formed such that on the stainless edge of the saw blade (1) 5 shows a common apex (3) of all outlined angles, one arm of which is the stainless edge of the saw blade (1), the other angle arm connecting the apex (3) with the corresponding feature (4) permanently marked on the periphery of the saw frame (2). Handheld saw with integrated protractor according to claim 1, characterized in that the fineness of dividing the marked angles at the periphery of the saw frame (2) is limited by resolution and readability 10 characters (4), interpolation can be used for even finer division.