Duplex pumping engine

Duplex pumping engine
Duplex Du"plex, a. [L., fr. duo two + plicare to fold. See {Two}, and {Complex}.] 1. Double; twofold. [1913 Webster]

2. (Computers) organized so that data may be transmitted in two opposite directions over the same channel; -- of communications channels, such as data transfer lines between computers. [PJC]

{Duplex escapement}, a peculiar kind of watch escapement, in which the scape-wheel has two sets of teeth. See {Escapement}.

{Duplex lathe}, one for turning off, screwing, and surfacing, by means of two cutting tools, on opposite sides of the piece operated upon.

{Duplex pumping engine}, a steam pump in which two steam cylinders are placed side by side, one operating the valves of the other.

{Duplex querela} [L., double complaint] (Eccl. Law), a complaint in the nature of an appeal from the ordinary to his immediate superior, as from a bishop to an archbishop. --Mozley & W.

{Duplex telegraphy}, a system of telegraphy for sending two messages over the same wire simultaneously.

{Duplex watch}, one with a duplex escapement.

{half duplex} (Computers) (a) arranged so that the information may be transmitted in both directions, but only in one direction at a time; -- of communications channels between computers; contrasted with {full duplex(a)}. (b) arranged so that the information transmitted to the remote computer also appears on the local terminal; -- of communications channels between computers; contrasted with {full duplex(b)}.

{full duplex}, (Computers) (a) arranged so that the information may be transmitted in both directions simultaneously; -- of communications channels between computers; contrasted with {half duplex(a)}. (b) arranged so that the information transmitted to the remote computer does not appear on the local terminal; -- of communications channels between computers; contrasted with {half duplex(b)}. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • Duplex — Du plex, a. [L., fr. duo two + plicare to fold. See {Two}, and {Complex}.] 1. Double; twofold. [1913 Webster] 2. (Computers) organized so that data may be transmitted in two opposite directions over the same channel; of communications channels,… …   The Collaborative International Dictionary of English

  • Duplex escapement — Duplex Du plex, a. [L., fr. duo two + plicare to fold. See {Two}, and {Complex}.] 1. Double; twofold. [1913 Webster] 2. (Computers) organized so that data may be transmitted in two opposite directions over the same channel; of communications… …   The Collaborative International Dictionary of English

  • Duplex lathe — Duplex Du plex, a. [L., fr. duo two + plicare to fold. See {Two}, and {Complex}.] 1. Double; twofold. [1913 Webster] 2. (Computers) organized so that data may be transmitted in two opposite directions over the same channel; of communications… …   The Collaborative International Dictionary of English

  • Duplex querela — Duplex Du plex, a. [L., fr. duo two + plicare to fold. See {Two}, and {Complex}.] 1. Double; twofold. [1913 Webster] 2. (Computers) organized so that data may be transmitted in two opposite directions over the same channel; of communications… …   The Collaborative International Dictionary of English

  • Duplex telegraphy — Duplex Du plex, a. [L., fr. duo two + plicare to fold. See {Two}, and {Complex}.] 1. Double; twofold. [1913 Webster] 2. (Computers) organized so that data may be transmitted in two opposite directions over the same channel; of communications… …   The Collaborative International Dictionary of English

  • Duplex watch — Duplex Du plex, a. [L., fr. duo two + plicare to fold. See {Two}, and {Complex}.] 1. Double; twofold. [1913 Webster] 2. (Computers) organized so that data may be transmitted in two opposite directions over the same channel; of communications… …   The Collaborative International Dictionary of English

  • full duplex — Duplex Du plex, a. [L., fr. duo two + plicare to fold. See {Two}, and {Complex}.] 1. Double; twofold. [1913 Webster] 2. (Computers) organized so that data may be transmitted in two opposite directions over the same channel; of communications… …   The Collaborative International Dictionary of English

  • half duplex — Duplex Du plex, a. [L., fr. duo two + plicare to fold. See {Two}, and {Complex}.] 1. Double; twofold. [1913 Webster] 2. (Computers) organized so that data may be transmitted in two opposite directions over the same channel; of communications… …   The Collaborative International Dictionary of English

  • Henry Rossiter Worthington — (December 17 1817 December 17 1880) was an American mechanical engineer. He had several inventions leading to the perfection of the direct steam pump (1845 55), patented the duplex steam pump (1859), and built the first duplex waterworks engine,… …   Wikipedia

  • List of pipeline accidents — The following is a list of pipeline accidents: This is an incomplete list, which may never be able to satisfy particular standards for completeness. You can help by expanding it with reliably sourced entries. Contents 1 Bel …   Wikipedia

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