Watts Brothers Tool Works
Headquarters | Wilmerding, Pennsylvania, United States |
---|
Watts Brothers Tool Works is a tool manufacturer located in Wilmerding, Pennsylvania. They are known for manufacturing drill bits that can drill square holes,[1][2] including blind holes which cannot be made with other methods such as broaching. The Harry Watts square drill bit is based on a Reuleaux triangle shape, and is used together with a guide and a special chuck to make a square hole.[3][4] Similarly, the company also manufactures drill bits for other angular holes such as pentagons and hexagons.
References
- ↑ Ragan, Sean Michael (October 6, 2009). "Drilling square holes with a Watts dril". MAKE Magazine. Retrieved February 23, 2016.
- ↑ Watts Brothers Tool Works (1950–1951). How to drill square hexagon octagon pentagon holes. New York: Wilmerding, Pa. : The Company,.
- ↑ Watts, Harry J., "Drill or Boring Member", U.S. patent #1,241,176, applied for November 1, 1916, granted September 25, 1917.
- ↑ Scott Smith:"Drilling Square Holes", in The Mathematics Teacher, October 1993 (Volume 86 Number 7).
This article is issued from Wikipedia - version of the 11/25/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.