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Telegraph Apparatus.

Description: Patent for a telegraph apparatus for which a "permanent record may be made" (lines 25-26) with a typewriter. The telegraph apparatus also allows for "positive and minus impulses" (line 40) to be sent over the telegraph line. Illustrations included. Best Available Copy -- some fading of the text on first, third, and fifth pages; third page illegible in some places.
Date: July 29, 1913
Creator: Edwards, Claude M.
Partner: UNT Libraries Government Documents Department

Miner's Lamp.

Description: Patent for a miner's lamp with a combustion chamber that allows for the regulation and extinguishing of the flame. It is designed to be lightweight and cheap to manufacture.
Date: July 29, 1913
Creator: Sallander, Carl G.
Partner: UNT Libraries Government Documents Department

Selective Telegraph System.

Description: Patent for a selective telegraph switch which allows current to be directed to a specific place and will minimize resistance.
Date: July 22, 1913
Creator: Edwards, Claude, M.
Partner: UNT Libraries Government Documents Department
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