FI94174B - Ice drill - Google Patents

Abstract

The object of the invention is an ice drill, which includes a shaft tube 1 on whose lower end cutters 2, 3 are attached above each other, the upper cutter 3 of which extends in the radial direction farther out from the shaft 2, and the cutter 3 has two cutting blades 4, 5 one blade 5 of which is primarily vertical and a lifting coil 6 for ice attached to the shaft 2. With present ice drills openings in ice cannot be performed safely and quickly. On the upper cutter 3 on the ice drill according to the invention, the vertically directed blade 5 is attached on the end of the first blade 4 and a guide fin 7 is an extension of the first blade 4. <IMAGE>

Description

94174

Ice drill

The invention relates to an ice drill comprising a body tube, blade parts superimposed on its lower end, the upper blade part 5 extending radially further from the body tube, and the upper blade part comprising two cutting blades, one blade of which is substantially vertical, and an ice blade .

10 Ice augers are used to drill holes in the ice through which fish are chipped. Drill holes can also be used for other purposes, but the most common purpose is probably to catch fish. Commonly used ice augers provide a borehole with a diameter of about 3 "-4" (75-100 mm). With the augers currently in use, it is not possible to reliably make another hole next to the finished hole in all conditions, because the auger is guided into the finished hole. It is not possible to lift this larger fish from the hole made with a drill or it is difficult to lift 20 because one has to make another hole at a distance and break the base between them. Large holes could also be used for other purposes.

Drills are known which have used two blades of different sizes and which have tried to eliminate this problem, but: these drills have not worked reliably in practice.

Such a drill is disclosed in FI patent application 751301.

The object of the invention is to provide an ice auger by means of which the drawbacks associated with current ice augers are eliminated. In particular, it is an object of the invention to provide an ice drill with which holes can be made quickly and reliably side by side and interleaved.

The object of the invention is achieved by an ice drill which is characterized by what is stated in the claims.

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In the ice drill according to the invention, a vertical blade is attached to the end of the first blade in the upper blade part. In addition, the first blade is an extension of the guide wing. When drilling with such an ice auger, the upper blade part 5 also cuts the ice well with both of its blades, because the blades are attached to each other and there is no ice between the blades that interferes with their use. In addition, the wing controls the blades.

In a preferred embodiment of the invention, the upper blade part 10 comprises a support part in the form of a substantially outer surface of the body tube and a fastening member connected thereto, by means of which the upper blade part is fastened to the body tube from a detachable surface. In this case, the blade part can be used as an accessory and can be quickly attached to the ice drill bit when it is desired to make large holes of size 15 or it is necessary to make another hole next to the finished hole.

In another preferred embodiment of the invention, the first blade extends substantially horizontally. When the blade is 20 substantially horizontal, a uniform cut is obtained. In other applications, this blade may also be in an oblique position.

In a further preferred embodiment of the invention, the guide wing 25 extends obliquely upwards and is less than half the circumference of the circle. The wing is naturally curved in shape, but its length may vary in different applications. The length is usually slightly below or above the length of a quarter of the circumference of the circle. The vane then sufficiently supports and guides the drill and the upper blade part as it cuts the ice and keeps the cutting blades at the right cutting angle throughout. during the period.

The invention will now be explained in more detail with reference to the accompanying drawing, in which Figure 1 shows an embodiment of an ice drill according to the invention seen from the side,

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3 94174 Fig. 2 shows the ice auger of Fig. 1 turned to another position when viewed from the side, Fig. 3 shows the ice drill of Fig. 1 seen from below, Fig. 4 shows the upper blade part of the ice drill according to Fig. 1 enlarged, side view, Fig. 5 shows the blade part according to Fig. 4 Fig. 6 shows a side view of another embodiment of an ice auger according to the invention, Fig. 7 shows a side view of an ice auger according to Fig. 6, Fig. 8 shows a bottom view of the ice auger according to Fig. 6, Fig. 9 shows a side view of the upper blade part 15 of the ice auger according to Fig. 6, and Figure 10 is a plan view of the blade portion of Figure 9.

In the applications according to the figures, the ice auger comprises a body tube 1, blade parts 2, 3 attached to its lower end and an ice-lifting coil 6 extending longitudinally of the tube. The blade part 2 is a conventional cutting blade part comprising two blades in an oblique position. This blade part acts as a guide for the direction of the hole. The blade part 3 also includes two cutting blades 4, 5, of which the first blade 4 is substantially in the horizontal plane and the second blade 5 is in the vertical plane. The blade 5 is attached to the end of the first blade 4. The blade part 3 extends in the radial direction further from the body tube than the blade part 2, so it cuts a larger hole in the ice. The blade part 3 comprises an arm-mounted fastening part 10, which is extended by a blade 30 4. The fastening part is above the blade part 2, so that it does not have a cutting blade.

The blade part 3 further comprises a guide wing attached to the fastening part behind the blades, which is bent to extend 35 slightly obliquely upwards. The wing is curved in shape and is a little over a quarter of the arc of a circle.

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In the embodiment according to Figures 1-5, the upper blade part 3 is permanently attached to the lower end of the body tube. In the embodiment according to Figures 6-10, the upper blade part comprises a support part 8 corresponding to the outer surface of the body tube and a screw acting as a fastening member, by means of which the blade part can be detachably attached to the ice drill body tube above the lower blade part.

The invention is not limited to the preferred embodiments shown, but may vary within the scope of the inventive idea formed by the claims.

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Claims (4)

94174 An ice auger comprising a body tube (1), blade portions (2, 3) superimposed on its lower end / of which the upper blade portion (3) extends radially beyond the body tube, and wherein the upper blade portion (3) comprises two cutting blades (4, 5) ), of which the second blade (5) is substantially vertical, and an ice lifting coil (6) fixed to the body tube, characterized in that in the upper blade-10 part (3) a vertical blade (5) is fixed to the end of the first blade (4), and that the extension of the first blade (4) is a guide vane (7). Ice auger according to claim 1, characterized in that the upper blade part (3) comprises a support part (8) substantially in the shape of the outer surface of the body tube and a fastening member (9) connected thereto, by means of which the upper blade part is releasably fastened to the body tube (1). Ice auger according to Claim 1 or 2, characterized in that the first blade (4) extends substantially parallel to the horizontal. Ice auger according to one of Claims 1 to 3, characterized in that the guide vane (7) extends obliquely upwards and has a length of less than half the circumference of the circle. 94174