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List: western_monarchs
Date: Sat, 30 Sep 2017 05:37:05 -0700
From: Larry Dighera <LDighera...> [western_monarchs] <western_monarchs...>
Subject: [western_monarchs] Help Request: Ducretet and Roger Oil-break flameproof key [1 Attachment]

<*>[Attachment(s) from Larry Dighera included below]


Is anyone able to provide information about the specific French spark
transmitters with which this key (photo attached) was intended to be
used?


Ducretet and Roger Oil-break flameproof key used in the early wireless
telegraphy years (circa 1908-1918) especially on military aircraft
spark transmitters

Please see: http://www.ebay.com/itm/330744489474

https://webcache.googleusercontent.com/search?q=cache:QPzav8foZC4J:https://www.zianet.com/sparks/sparkmakers2.html+&cd=1&hl=en&ct=clnk&gl=us

http://www.telegraph-office.com/pages/DuCretet_and_Roger_key.html

https://web.archive.org/web/20130721052729/https://www.zianet.com/sparks/avion.jpg



<*>Attachment(s) from Larry Dighera:

<*> 1 of 1 Photo(s) https://groups.yahoo.com/neo/groups/western_monarchs/attachments/1666672355;_ylc=X3oDMTJybHVjcXJvBF9TAzk3MzU5NzE0BGdycElkAzE5NTkzNTU1BGdycHNwSWQDMTcwNTcyNDg3NARzZWMDYXR0YWNobWVudARzbGsDdmlld09uV2ViBHN0aW1lAzE1MDY3NzUwMzk-
<*> UCRETET & ROGER (PARIS) OIL BREAK SPARK KEY CIRCA 1915 10.jpg

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Posted by: Larry Dighera <LDighera...>
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