Strange gear found in English front line trenches

[Flavio]

Hi guys, today little excursion with the metal detector in the English area. Found little, an English pickaxe, some 303 shells, And three pieces: a weblay-london flare gun caseback, , a cap from the Austrian Stiehl hand grenade and a strange gear with a small pinion in the center, it almost looks like a gear multiplier. Does anyone know how to recognize it and, if so, in what context did it go?

Thank you all Flavio 

Edited Sunday at 19:04 by Flavio

[Spaceman]

Can you please tell us what the diameter of the gear ring is. Also, although I can make out the 'FY London' on the righthand object, is there any other letters that can be seen?

[Flavio]

Photo 

Gear spessor 3mm

Thank's

 

[Flavio]

If it helps, all this was found at a Lewis or Vickers machine gun outpost captured during the attack on 15 June 1918

Ps

It seems like a gear that was supposed to support a very robust movement, because the thickness of the piece and the shape of the wheel teeth suggest this

Edited Monday at 10:09 by Flavio

[Spaceman]

Eley of London were an ammunition maker and the item with their name on it could be a cartridge case or a (Mk V) percussion tube used to ignite a bagged cartridge in a British so-called Breech Loading (BL) artillery piece (BL 6-Inch Howitzer, BL 8-Inch Howitzer, etc). In these pieces, rather than using a brass cartridge case, the propelling charge was contained in a silk bag and was ignited by a percussion tube (officially called a 'Tube, Percussion, S. A. Cartridge') inserted into the rear of the breech. 

Either way, it does not look as though this item is connected to the other two items. I am not an expert but the other two items might be part of a clockwork mechanism?

 

Edited Monday at 10:30 by Spaceman

[Flavio]

In the meantime, thanks for your input As regards the object you described, in my opinion it is the bottom of a pressed cardboard cartridge case for the English signal flare gun, there in that place it is already the third one that I have found, the sheet metal piece is the final part of the handle of the Austrian potato masher. As for the gear, too large in thickness even for a table clock