Apparatus for Protecting Electrical Circuits.

Description

Patent for an apparatus for protecting electrical circuits, and is an improvement on a previous patent (No. 537,932) issued to the inventor. This patent consists of "an electrical circuit, an alarm or indicator, a continuously-operating signal-transmitter at the protected structure operating to affect or influence the alarm or indicator, and a second or duplicate continuously-operating signal-transmitter located at the watchman's station, operating in unison with the first-named signal-transmitter to affect the alarm or indicator equally and oppositely as regards the first-named transmitter, whereby a signal is sounded or an alarm given only when the two transmitters are out of unison ... continued below

Physical Description

[1], 4 p. : ill. ; 23 cm.

Creation Information

Oram, John M. January 7, 1896.

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Description

Patent for an apparatus for protecting electrical circuits, and is an improvement on a previous patent (No. 537,932) issued to the inventor. This patent consists of "an electrical circuit, an alarm or indicator, a continuously-operating signal-transmitter at the protected structure operating to affect or influence the alarm or indicator, and a second or duplicate continuously-operating signal-transmitter located at the watchman's station, operating in unison with the first-named signal-transmitter to affect the alarm or indicator equally and oppositely as regards the first-named transmitter, whereby a signal is sounded or an alarm given only when the two transmitters are out of unison or when one is changed, varied, or interfered with in an unauthorized manner" (lines 72-86).

Physical Description

[1], 4 p. : ill. ; 23 cm.

Notes

Application filed June 4, 1895. Serial No. 551,642. (No model.)

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Texas Patents

United States patents filed by Texas inventors before 1900. A majority of the patents are for agricultural and industrial applications.

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Creation Date

  • January 7, 1896

Accepted Date

  • January 7, 1896

Submitted Date

  • June 4, 1895

Added to The The Portal to Texas History

  • Aug. 4, 2011, 5:55 p.m.

Description Last Updated

  • Oct. 26, 2015, 8:18 p.m.

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Citations, Rights, Re-Use

Oram, John M. Apparatus for Protecting Electrical Circuits., patent, January 7, 1896; [Washington D.C.]. (texashistory.unt.edu/ark:/67531/metapth174179/: accessed December 17, 2017), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; crediting UNT Libraries Government Documents Department.