previous next

Vac′u-um-brake.


Railway.) A form of steamoperated car-brake, in which the general construction of the brake is analogous to that of the Westinghouse. The power employed is the pressure of the atmosphere produced by creating a vacuum instead of that due to compressed air. It is the invention of J. Y. Smith of Pittsburgh.

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 United States License.

An XML version of this text is available for download, with the additional restriction that you offer Perseus any modifications you make. Perseus provides credit for all accepted changes, storing new additions in a versioning system.

hide Places (automatically extracted)

View a map of the most frequently mentioned places in this document.

Sort places alphabetically, as they appear on the page, by frequency
Click on a place to search for it in this document.
Pittsburgh (Pennsylvania, United States) (1)

Download Pleiades ancient places geospacial dataset for this text.

hide People (automatically extracted)
Sort people alphabetically, as they appear on the page, by frequency
Click on a person to search for him/her in this document.
J. Y. Smith (1)
hide Display Preferences
Greek Display:
Arabic Display:
View by Default:
Browse Bar: