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2. Boring (manufacturing) - Wikipedia

   en.wikipedia.org/wiki/Boring_(manufacturing)

   Boring machines come in a large variety of sizes and styles. Boring operations on small workpieces can be carried out on a lathe while larger workpieces are machined on boring mills. Workpieces are commonly 1 to 4 metres (3 ft 3 in to 13 ft 1 in) in diameter, but can be as large as 20 m (66 ft).

3. Tunnel boring machine - Wikipedia

   en.wikipedia.org/wiki/Tunnel_boring_machine

   A tunnel boring machine (TBM), also known as a "mole" or a "worm", is a machine used to excavate tunnels. Tunnels are excavated through hard rock, wet or dry soil, or sand, each of which requires specialized technology. Tunnel boring machines are an alternative to drilling and blasting (D&B) methods and "hand mining".

4. Jig borer - Wikipedia

   en.wikipedia.org/wiki/Jig_borer

   Franklin D. Jones, in his textbook Machine Shop Training Course (5th ed), [4] noted: "In many cases, a jig borer is a 'jig eliminator.' In other words, such a machine may be used instead of a jig either when the quantity of work is not large enough to warrant making a jig or when there is insufficient time for jig making."

5. John Wilkinson (industrialist) - Wikipedia

   en.wikipedia.org/wiki/John_Wilkinson_(industrialist)

   His development of a machine tool for boring cast iron cannons presaged the accurate boring of cylinders for the first Watt steam engines. He also improved the air supply for the blast furnace using a new design of bellows , and was the first to use wrought iron in canal barges.

6. Machine tool - Wikipedia

   en.wikipedia.org/wiki/Machine_tool

   James Watt was unable to have an accurately bored cylinder for his first steam engine, trying for several years until John Wilkinson invented a suitable boring machine in 1774, boring Boulton & Watt's first commercial engine in 1776. [8] [9] The advance in the accuracy of machine tools can be traced to Henry Maudslay and refined by Joseph ...

7. Boring machine - Wikipedia

   en.wikipedia.org/wiki/Boring_machine

   Boring machine may refer to: Boring machine (carpentry) A machine for boring (manufacturing) holes; Tunnel boring machine; A machine that is not very exciting. See also

8. Bullard Machine Tool Company - Wikipedia

   en.wikipedia.org/wiki/Bullard_Machine_Tool_Company

   Roe (1916) says that "Up to that time boring machines were relied on only for large and rough work." [5] Bullard Sr.'s son, Edward Payson Bullard Jr. (1872–1953), continued the family machine tool business and brought the turret principle to the vertical boring mill, making it a vertical turret lathe. [6]

9. Bertha (tunnel boring machine) - Wikipedia

   en.wikipedia.org/wiki/Bertha_(tunnel_boring_machine)

   Freighter Fairpartner carrying the disassembled tunnel boring machine into the Port of Seattle in April 2013. Bertha was designed and manufactured by Hitachi Zosen Sakai Works of Osaka, Japan, and was the world's largest earth pressure balance tunnel boring machine, [14] at a cutterhead diameter of 57.5 feet (17.5 m) across.