tommy bar

From Wiktionary, the free dictionary
Jump to navigation Jump to search

English

[edit]
T-handle wrench with integral tommy bar as the handle; the grooves in the bar serve the ball detent to keep the bar in place. A socket and extension are attached.

Noun

[edit]

tommy bar (plural tommy bars)

  1. (engineering, machining) A cylindrical iron or steel bar used as a lever; thus:
    1. A short bar put through the hole in a socket spanner or box spanner to provide leverage.
    2. A bar used to loosen or tighten some types of chucks and tool holders on machine tools such as lathes or milling machines.
      A set of two tommy bars is the standard tooling for the spindle nose threads of some minilathes and minimills.

Translations

[edit]

See also

[edit]
  • (tool containing an integral tommy bar): T-handle
  • (tool involving an analogous male cylindrical portion): pin spanner
  • (hooked bars, differentiated from tommy bars): crowbar, prybar, jimmy

Further reading

[edit]
Retrieved from "https://en.wiktionary.org/w/index.php?title=tommy_bar&oldid=81933300"