This Weeks Mystery Tool?

[Mick B1Participant @mickb1]

Take a gander here:-

https://maritime.org/doc/br224/pl6.htm

Following on from my earlier post, I was wondering if it's the operating cam from the semi-automatic breech of a sliding wedge artillery piece or tank gun. In that context (as distinct from smallarms) semi-automatic means it just ejects the empty case and leaves the breech open for the next round.

The illustration shows a 'typical' example but there'd be many variations to suit individual designs. If it's British in origin, the most likely parent piece is probably the 25-pounder, but it could be almost any sliding-wedge gun using fixed ammunition.

That's my two-penn'orth.

[I.M. OUTAHEREParticipant @i-m-outahere]

No idea what it is but a question that is burning in my mind – is it hardened ?

[Mick B1Participant @mickb1]

Posted by Mick B1 on 09/02/2018 22:12:25:

….but it could be almost any sliding-wedge gun using fixed ammunition.

Sorry – should've said 'metal cartridges'. 25 pdr didn't use fixed.

[Michael GilliganParticipant @michaelgilligan61133]

Posted by XD 351 on 10/02/2018 05:26:15:

… a question that is burning in my mind – is it hardened ?

.

Quell that fire ^^^

Direct quote from the opening post:

"Seem very well made and has been hardened and ground."

MichaelG.

Edited By Michael Gilligan on 10/02/2018 08:23:26

[Martin King 2Participant @martinking2]

Hi All,

That certainly seems to be the part, problem solved I think!

MickB1: thats a great resorce you have linked, I have saved it for further study, many thanks.

Martin

[Clive HartlandParticipant @clivehartland94829]

So I was not far wrong saying it was off a weapon! I knew I had seen one before.

Clive

Edited By Clive Hartland on 10/02/2018 09:02:31

[Mick B1Participant @mickb1]

Posted by Martin King 2 on 10/02/2018 08:27:15:

Hi All,

That certainly seems to be the part, problem solved I think!

MickB1: thats a great resorce you have linked, I have saved it for further study, many thanks.

Martin

Well, thank you! But what still bothers me about it is the lack of a stamped or engraved Part Number. Putting these on is good and well-established habit in military manufacturers – in fact I remember one place I worked at that kept a guy on long past retirement age 'cos he was very expert at painting tiny identification numbers on small lots of specialist electromech components.

I suppose yours could be a component that failed inspection for whatever reason and was taken home by the machinst for his Black Museum, like some of us do…!

[I.M. OUTAHEREParticipant @i-m-outahere]

Posted by Michael Gilligan on 10/02/2018 08:21:38:

Posted by XD 351 on 10/02/2018 05:26:15:

… a question that is burning in my mind – is it hardened ?

.

Quell that fire ^^^

Direct quote from the opening post:

"Seem very well made and has been hardened and ground."

MichaelG.

Edited By Michael Gilligan on 10/02/2018 08:23:26

Must have had my eyes shut when i read the Op

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