Ice Drill

Abstract

A device is designed for optionally connecting a crank (3) and a motor shaft with a drill rod (2) of a tool for drilling holes through thick outdoor ice, on lakes and the like, by rotating the drill rod, for converting the tool between a tool for hand driven and a tool for motor driven drilling. The device has for this sake locking members for locking the crank and the motor shaft, respectively, to the drill rod, which are releasably arranged for removing the crank and the motor shaft, respectively, from the drill rod.

Description

FIELD OF THE INVENTION AND PRIOR ART[0001]The present invention relates to a device for connecting a crank with the drill rod of a tool for drilling holes through thick outdoor ice, on lakes and the like, by driving the crank by hand, which comprises means for establishing a connection of mutual insertion of a shaft of said crank and an end of the drill rod as well as a first member for interlocking them in this position.[0002]It is then theoretically possible that in such a connection the drill rod is intended to be inserted into and received in said crank shaft, but the circumstances are normally the opposite, inter alia depending upon that it is often from a grip point of view desired to have a smaller diameter of a rod forming said crank than of the drill rod. A device of this type is applicable to tools normally called ice drills, which is the reason for using this expression hereinafter.[0003]Outdoor ice means here ice on lakes, rivers, oceans and the like, where a flowing wat...

AI Technical Summary

Benefits of technology

[0008]The object of the present invention is to provide a device of the type defined in the introduction, which enables a broadened field of use of ice drills equipped with such a device.

[0010]Such a device enables a broadened field of use of an ice drill provided therewith, so that, one and the same ice drill may be used both for hand driven and motor driven drilling, and two separate ice drills do not have to be carried along for being able to select the type of drilling most suitable in different situations. Neither will it be necessary to choose an ice drill of one of these types for avoiding such carrying along of two ice drills and by this in certain situations be forced to accept the type of ice drill being less suited. Furthermore, it involves a considerable saving of costs to be able to convert an ice drill from hand operation to motor operation instead of having a separate ice drill for each type of operation.

[0011]The advantage of an ice drill driven by hand is that it is less expensive to purchase than a motor driven ice drill and it is easier to carry. However, it is thanks to the device according to the invention possible to afterwards purchase a motor and convert the ice drill into a motor driven ice drill in situations when this is desired if the person who has bought the ice drill in a later occasion would be interested in acquiring a motor driven ice drill. An advantage of a motor driven ice drill is that considerably more holes may be drilled through a thick ice per time unit, such as during a day, and this drilling gets considerably less exhausting than with a hand driven ice drill. However, it may at some locations, such as on certain lakes or in certain regions of lakes, be prohibited to use a motor driven ice drill for environmental reasons, such as noise reasons, and an ice drill provided with the device according to the invention may then be easily converted to hand operation and holes be drilled in the ice through driving a said crank by hand. Accordingly, an ice drill provided with a device according to the invention is also very advantageous and interesting for the person who already from the beginning wishes to acquire a motor driven ice drill, since a said crank may simultaneously be acquired as a cheap accessory for enabling said conversion when desired.

[0020]According to another embodiment of the invention the device comprises a handle designed to be arranged externally of said drill rod end for providing a grip for releasing and locking, respectively, crank or motor with respect to the drill rod. The gripping for converting the tool between a tool for hand driven and one for motor driven drilling are by this facilitated and made more comfortable.

Problems solved by technology

Furthermore, it involves a considerable saving of costs to be able to convert an ice drill from hand operation to motor operation instead of having a separate ice drill for each type of operation.

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