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7 Matching Results
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Try Gravity Level
Patent for a try gravity level. Illustration included.
Date:
November 15, 1904
Creator:
Drew, John A.
System:
The Portal to Texas History
Cultivating-Plow.
Patent for "an improved cultivating-plow adapted for cultivating a number of rows of growing plants at a single operation" with improvements in connecting plow-beams to the axle, to devices for raising the plows from the ground, and in operating the cultivator.
Date:
November 27, 1900
Creator:
Wells, Charles
System:
The Portal to Texas History
Electric Car-Brake.
Patent for improvements in electrically controlled car-brakes with the various purposes of coupling and uncoupling, putting on and taking off brakes, signaling from car to car or train to car, lighting trains, and other purposes to which it may be adapted, including illustrations.
Date:
November 10, 1891
Creator:
Collier, James Dallas; Miller, James K. Polk & Kirby, John H.
System:
The Portal to Texas History
Electric Car-Coupling.
Patent for invention that applies the use of electricity to various purposes of coupling and uncoupling, putting on and taking off brakes; signaling from car to car, train to car, or vice versa; lighting trains; and other purposes to which it can be adapted, including illustrations.
Date:
November 10, 1891
Creator:
Collier, James Dallas; Miller, James K. Polk & Kirby, John H.
System:
The Portal to Texas History
Electrical Connection and Signal for Railway-Cars.
Patent for invention that applies the use of electricity to suitable electrically-operated devices throughout a train, including illustrations.
Date:
November 10, 1891
Creator:
Collier, James Dallas; Miller, James K. Polk & Kirby, John H.
System:
The Portal to Texas History
Lamp-Wick Raiser.
Patent for a device designed to manipulate a lamp-wick in its guiding tube without cutting or injuring the wick, including illustrations.
Date:
November 3, 1891
Creator:
McBride, Martin A.
System:
The Portal to Texas History
Improvement in Spectacle-Frames.
Patent for "spectacle-frames in which the bows are turned into a coil near the points where they are connected to the lens-hoops for the purpose of forming spring-joints, instead of the ordinary pivot-joints." (Lines 6-10) Includes instructions and illustrations.
Date:
November 30, 1875
Creator:
Stewart, John W.
System:
The Portal to Texas History