Resource Type

Blow-Off Cock (open access)

Blow-Off Cock

Patent for new and useful Improvements in “blow-off cocks for use on locomotive and other boilers,” (line 9-11), including an illustration.
Date: November 23, 1915
Creator: Roach, John L. & Dawson, Lance L.
System: The Portal to Texas History
Chest for Piston-Valves. (open access)

Chest for Piston-Valves.

Patent for a valve chest "fitted for the reception and operation of a piston valve, easily applying to a piston cylinder of a locomotive in place of a removed slide-valve chest without loss of the cylinder, adapting to use superheated steam and high pressure." (lines 11-19).
Date: May 23, 1916
Creator: Dawson, Lance L. & Roach, John L.
System: The Portal to Texas History