Brass Plug

[Investment]

Hello,

Would forum members please help in identifying what projectile used this brass plug and if it was used in WW1 or WW2.

The following words and letters are on the brass plug.

PRYMORE
REGISTERED
TRADEMARK

(Any information on who Prymore was ?)

M B

(Any information on what the letters M and B stand for ?)

G & C. R.

(Any information on who G & C. R. was ?)

I P or F ?

(Any information on what the letters I P or F stand for ?)

Also, any idea what the tool looks like that was used to add or remove the brass plus, as it has a square hole.

All help would be greatly appreciated.

Many thanks,

Invest

 

[TimG]

PRYMORE - Is the registered trademark of Moore Brothers of Priory Road, Aston, Birmingham. Probably a play on their name and address. Prymore relates to their range of specialist products in brass and manganese bronze.

M B - As above.

I suspect that G&CR might be a railway company. I've looked but unfortunately prior to Railways Act of 1921 there were literally hundreds of railway companies in the UK.

The seller hasn't given the thread diameter, which is more than likely 2". Thus it could fit any British projectile with a 2" GS fuze gauge.

TimG

 

[Investment]

TimG, many thanks for your help with my questions.

 

[AMMOTECHXT]

The square hole appears to be about 3/8 of an inch - the same size as I see on Plugs Fuze Hole numbers 1 and 2, although yours is not one of those.

 

[Snufkin]

The item shown appears to be a No.1 fuze hole plug (type marking just visible) rammed hard into an 18-pr Shrapnel fuze socket, the stamping made by Moore Bros Ltd. Moore Bros certainly had contracts for "sockets, stampings, fuze, brass for 18-pr QF".

The maker of the plug might be Ideal Engineering Co., through the Leeds National Factory.

 

[Investment]

AMMOTECHXT, many thanks for your help about Plugs Fuze Hole numbers 1 and 2.

 

[Investment]

Snufkin, many thanks for your help regarding Moore Bros Ltd and Ideal Engineering Co.

 

[Snufkin]

I have just found contract listings for "sockets, fuze, 18-pr" from Guest and Chrimes, Rotherham (G.& C. R.), so it would seem the socket stampings were made by Moore Bros and the machining operations completed by Guest and Chrimes.


Edited to add examples of the contract listings for the three companies Moore Bros, Guest and Chrimes, and Ideal Engineering.

 

[Investment]

Snufkin, many thanks for posting those contract listings, as they are greatly appreciated.

 

[AMMOTECHXT]

The item shown appears to be a No.1 fuze hole plug (type marking just visible) rammed hard into an 18-pr Shrapnel fuze socket, the stamping made by Moore Bros Ltd. Moore Bros certainly had contracts for "sockets, stampings, fuze, brass for 18-pr QF".

The maker of the plug might be Ideal Engineering Co., through the Leeds National Factory.

The one shown at the start of this post does not appear to be a No 1 Plug. In the groups above, the No 1 has a short internal intrusion into the shell, the No 2 has a longer intrusion. Both types had a 3/8 Inch square drive for attachment to the shell. The No 13 is the largest of those shown and the No 17 is similar to but shorter than the No 13.

 

[Snufkin]

The one shown at the start of this post does not appear to be a No 1 Plug.

I beg to differ. The following show a No.1 plug screwed hard into a 2-inch fuze socket.


.

 

[AMMOTECHXT]

I beg to differ. The following show a No.1 plug screwed hard into a 2-inch fuze socket.

Interesting, so Investment's and your photos show a No 1 plug screwed into a type of adapter / 2 Inch fuze socket. The No 1, No 2, No 13 and No 17 I find have 2 Inch fuze hole threads and when fitted to shell are screwed directly into the shell. I have found one of those adapters but it was by itself and showed no sign of having been in a detonation. Do you have any info on what the adapter / socket was used with operationally? The hole may suggest use with a pyrotechnic fuze.

 

[Investment]

This week the number 1 plug and 2 inch fuze socket arrived in the mail.