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2. Reverse overshot water wheel - Wikipedia

   en.wikipedia.org/wiki/Reverse_overshot_water_wheel

   He then describes a second variant where the boxes are only fitted to the ends of the wheel, so that although the volume of water carried is much smaller, it is carried to a greater height. The final variant is an endless chains of buckets, and much greater lifts can be achieved, although greater effort is needed.

3. Bucket-wheel excavator - Wikipedia

   en.wikipedia.org/wiki/Bucket-wheel_excavator

   A bucket wheel excavator (BWE) consists of a superstructure to which several more components are fixed. The bucket wheel from which the machines get their name is a large, round wheel with a configuration of scoops which is fixed to a boom and is capable of rotating. Material picked up by the cutting wheel is transferred back along the boom.

4. Cutting tool (machining) - Wikipedia

   en.wikipedia.org/wiki/Cutting_tool_(machining)

   The main features of the cutting edge are: form of the cutting edge: radius or waterfall or trumpet (reverse waterfall) cutting edge angles; form and size of the chamfers; The measurement of the cutting edge is performed using a tactile instrument or an instrument using focus variation. To quantify a cutting edge the following parameters are used:

5. Dragline excavator - Wikipedia

   en.wikipedia.org/wiki/Dragline_excavator

   A dragline bucket system consists of a large bucket which is suspended from a large truss-like boom (or mast) with wire ropes. The bucket is maneuvered by means of a number of ropes and chains. The hoist rope, powered by large diesel or electric motors, supports the bucket and hoist-coupler assembly from the boom. The dragrope is used to draw ...

6. Reamer - Wikipedia

   en.wikipedia.org/wiki/Reamer

   Sharp cutting edges, meaning less cutting force. The high cobalt versions are very resistant to heat and thus excellent for reaming abrasive and/or work hardening materials such as titanium and stainless steel. Tungsten carbide More expensive than high-speed steels. Hardness up to HRC 92. Will outlast high-speed steels (usually by about 10:1 ...

7. Timeline of United States inventions (1890–1945) - Wikipedia

   en.wikipedia.org/wiki/Timeline_of_United_States...

   A drag line bucket system consists of a large bucket which is suspended from a boom, a large truss-like structure, with wire ropes. The bucket is maneuvered by means of a number of ropes and chains. The hoist rope, powered by large diesel or electric motors, supports the bucket and hoist-coupler assembly from the boom.