Auger assembly

A flight unit for an auger assembly comprising:

• a cylindrical sleeve having opposite sides, a first end and a second end;
• a pair of helical shaped flights joined to the opposite sides of the sleeve;
• each of said flights having one end located below the first end of the sleeve and a second end located above the second end of the sleeve;
• said pair of helical shaped flights comprising
• a first helical flight secured to one side of the sleeve;
• a second helical flight secured to the side of the sleeve opposite the one side of the sleeve;
• said first and second flights having a first radial outwardly extended end located below the first end of the sleeve and a second radial outwardly extended end located above the second end of the sleeve;
• the one end of each of said flights having a radial outwardly extended leading edge located above the second of the end of the sleeve, and a second end of each of said flights having a radial extending trailing edge located below the first end of the sleeve, said leading edge and trailing edge being circumferentially spaced from each other;
• a plurality of circumferentially spaced projections on the first end of the sleeve;
• and
• a plurality of circumferentially spaced recesses in the second end of the sleeve.

A drill for cutting a hole in ice on a body of water comprising:

• a motor including a threaded drive shaft;
• an auger assembly operatively connected to the motor whereby the motor operates to rotate the auger assembly;
• a cutting head secured to the auger assembly for cutting a hole in ice;
• said auger assembly including
• a shaft connected to the motor;
• a first flight unit mounted on the shaft;
• fasteners securing the first flight unit to the cutting head;
• a second flight unit mounted on the shaft;
• said first and second flight units having cooperating members drivably connecting said first and second flight units;
• a ring operatively connected to the second flight unit;
• at least one fastener securing the ring to the shaft whereby the ring and cutting head drivably connect the first and second flight units to the shaft;
• a releasable coupling connecting the drive shaft of the auger assembly shaft;
• said coupling having a split head with an axially threaded hole accommodating the threaded drive shaft of the motor;
• a clamp surrounding the split head operable to compress and lock the split head on the drive shaft of the motor;
• a body joined to the split head;
• members on the body and auger assembly shaft to drivably connect the body to the auger shaft assembly;
• and
• a collar retaining the body on the auger assembly shaft.

A drill for cutting a hole in ice on a body of water comprising:

• a motor including a threaded drive shaft;
• an auger assembly operatively connected to the motor whereby the motor operates to rotate the auger assembly;
• a cutting head secured to the auger assembly for cutting a hole in ice;
• said auger assembly including
• a shaft connected to the motor;
• a first flight unit mounted on the shaft;
• fasteners securing the first flight unit to the cutting head;
• a second flight unit mounted on the shaft;
• said first and second flight units having cooperating members drivably connecting said first and second units;
• a ring operatively connected to the second flight unit;
• at least one fastener securing the ring to the shaft whereby the ring and cutting head drivably connect the first and second flight units to the shaft;
• a releasable coupling connecting the drive shaft to the auger assembly shaft;
• said coupling having a split head with an axially threaded hole accommodating the threaded drive shaft of the motor;
• a clamp surrounding the split head operable to compress and lock the split head on the drive shaft;
• said split head including a plurality of upright members and upright slots separating adjacent upright members;
• said clamp surrounding the upright members and biasing the upright members into tight engagement with the drive shaft of the motor;
• said clamp comprising first and second C-shaped members located around the upright members;
• and
• fasteners connecting the first and second C-shaped members to apply clamping forces on the upright members to compress and lock the upright members on the drive shaft of the motor.

A drill for cutting a hole in ice on a body of water comprising:

• a motor;
• an auger assembly drivably connected to the motor whereby the motor operates to rotate the auger assembly;
• a cutting head secured to the auger assembly operable upon rotation thereof for cutting a hole in ice on a body of water;
• said auger assembly including
• a shaft connected to the motor whereby the motor rotates the shaft;
• a first flight unit having a first sleeve located around the shaft, said first sleeve having opposite sides, an upper end and a lower end;
• first and second helically curved flights secured to the opposite sides of the first sleeve, said first and second helically curved flights having trailing radial edges located below the upper end of the first sleeve and leading radial edges above the lower end of the first sleeve;
• a second flight unit having a second sleeve located around the shaft, said second sleeve having opposite sides, an upper end and a lower end;
• first and second helically curved flights secured to the second sleeve and having trailing radial ends located below the upper end of the second sleeve and leading radial ends above the lower end of the second sleeve;
• said helically curved flights secured to the first and second sleeves being axially spaced from each other;
• a plurality of circumferentially spaced recesses in the upper end of the first sleeve, a plurality of circumferentially spaced projections extended downwardly from the lower end of the first sleeve, a plurality of spaced recesses in the upper end of the second sleeve;
• a collar surrounding the shaft having projections located in the recesses in the upper end of the first sleeve to drivably connect the first sleeve to the shaft;
• and
• at least one fastener securing the collar to the shaft whereby on operation of the motor the shaft, first and second helical flight units and cutting head are rotated.