Resource Type
Counties
3 Matching Results
Results open in a new window/tab.
Results:
1 - 3 of
3
Telephone Or Switchboard Plug
Patent for a telephone or switchboard plug. "This invention relates to improvements in connecting plugs adapted to be used with spring jacks of telephone switchboards" (line 8-11). Illustrations included.
Date:
November 27, 1906
Creator:
Dozier, Alva Battie
System:
The Portal to Texas History
Releasing Device for Brakes of Locomotive Drive-Wheels.
Patent for a simple and durable improved releasing device for brakes of locomotive drive-wheels that prevents "the drive wheels from being locked and sliding on the track rails, to obviate the uneven wear on the wheel tire" (lines 15-18). The invention has an auxiliary piston connected to the triple valve piston and is controlled by back pressure in the steam chest.
Date:
November 27, 1894
Creator:
Pelham, Walter O.
System:
The Portal to Texas History
Railway Rail Fastening.
Patent for a new and improved rail fastening. This design consists in "[t]he combination of the tie having upwardly-inclined ends, the chairs having the recesses on their under sides to receive the ends of the tie, said recesses having their outer ends inclined to correspond with the inclination of the ends of the tie, and the clamping devices connecting the chairs together, and thereby securing them firmly on the ends of the tie" (lines 90-97).
Date:
November 27, 1888
Creator:
McRae, Daniel M.
System:
The Portal to Texas History