Fuze, Percussion R.L No 7 Mk 11 & Mk 111*.

[ron3350]

I show the R^L Fuzes Percussion Mk 11 and Mk 111* used in Breech-loaded Land Service 20Pr, 12, 9 & 6 Pr segmented and common shells.
The fuze has a twisted safety pin and square hole at the top for the GS key.
Mk11 was introduced in 1873 and the Mk111 in 1887. I have no information on the Mk111* fuze. There was also a Mk 1V modification.
Note that the Mk111* has an extra 1 stamped and the modification date when the Mk11 fuze was modified.

 

[wingsofwrath]

Very nice! here is the relevant page from the 1877 edition of the "Treatise on Ammunition"

View attachment Treatise-on-Ammunition-1877_Page_367.jpg

Also, in Romania we had a locally produced version of this fuze called the "Focosul Percutant Md.1881" (Percussion Fuze M.1881) used by the 63mm Armstrong Mountain gun M.1883, the breech loading version of the Armstrong 2.5-inch RML.
Interestingly ours either had a round instead of a square cutout on the top of the fuze or lacked it altogether.

 

[TED]

Very nice! here is the relevant page from the 1877 edition of the "Treatise on Ammunition"

View attachment 204204

Also, in Romania we had a locally produced version of this fuze called the "Focosul Percutant Md.1881" (Percussion Fuze M.1881) used by the 63mm Armstrong Mountain gun M.1883, the breech loading version of the Armstrong 2.5-inch RML.
Interestingly ours either had a round instead of a square cutout on the top of the fuze or lacked it altogether.

View attachment 204202View attachment 204203

Hi there, can I please add that this fuze would not have been used on the Armstrong lead coated 12,9 and 6Pr segmenting shells. These fuzes were made to fit the general Service Tapered thread well. the segmenting shells mentioned above were threaded left hand, 9 TPI, parallel. Latter production Armstrong projectiles were first bushed to GS taper and then also manufactured with that fuze well, but not the 12,9 and 6pr Segmenting, which were field service rather than naval.