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  2. Rotary mower - Wikipedia

    en.wikipedia.org/wiki/Rotary_mower

    An American rotary lawnmower mechanic (b. 1927) when queried as to the first rotary mower he knew of - produced a picture of a machine mass produced around 1939 which originally used a Ford Model A or B electric starter motor turned vertically with a steel disc attached to the output shaft having common sickle bar trapezoidal blades riveted upon it.

  3. Burr (cutter) - Wikipedia

    en.wikipedia.org/wiki/Burr_(cutter)

    Burrs are a rotary analog to files that cut linearly (hence their alternate name, rotary files). They share many similarities with endmills and router bits , with the notable distinction that the latter typically have their toolpaths dictated by the machine, while burrs are frequently operated in a freehand manner.

  4. Rotary cutter - Wikipedia

    en.wikipedia.org/wiki/Rotary_cutter

    A rotary cutter is a tool generally used by quilters to cut fabric.It consists of a handle with a circular blade that rotates, thus the tool's name. Rotary cutter blades are very sharp, can be resharpened, and are available in different sizes: usually smaller blades are used to cut small curves, while larger blades are used to cut to straight lines and broad curves.

  5. Indexing head - Wikipedia

    en.wikipedia.org/wiki/Indexing_head

    A CNC dividing head may be used in this manner on either manual or CNC machinery. Most CNC dividing heads are also able to function as a full CNC axis and may be wired into the control of a CNC machine. This enables the machine's main CNC controller to control the indexing head just like it would control the other axes of the machine.

  6. Cutting tool (machining) - Wikipedia

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

    Linear cutting tools include tool bits (single-point cutting tools) and broaches. Rotary cutting tools include drill bits, countersinks and counterbores, taps and dies, reamers, and cold saw blades. Other cutting tools, such as bandsaw blades, hacksaw blades, and fly cutters, combine aspects of linear and rotary motion. The majority of these ...

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

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

    The first rotary can opener with a cutting wheel was invented in 1870 by William W. Lyman, of Meriden, Connecticut, who received a U.S. Patent 105,346 on July 12, 1870. In 1925 the Star Can Opener Company of San Francisco improved on Lyman's wheel blade by adding a second, serrated or toothed wheel, called a "feed wheel" or "turning gear" to ...