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  1. #11
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    Don't know, out of period for me. Both were, from memory, fired eg's and both were pretty rusty. One made 38, the other 35 hammer. Same buyer, I saw him collect later.

  2. #12
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    I have these photos and some more of the type G sinker mine
    Attached Images Attached Images

  3. #13
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    Cheers, Kiwi, grateful.A.

  4. #14
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    Finally found time to rat through the German section of the fuze library and came up with this eg of the LM Zus Z 34B, and a clock, wch, I believe, are both correct for the magnetic mine. The clock has a stud that is depressed by water pressure as the mine sinks and sets the escapement running. Note the panel cut out of the perspex cover, introduced to prevent render safe procedures involving the injection of quick setting fluid in the clock's works, wch was adopted as an alternative method of disabling the balance wheel. All this took some nerve whilst close to a really big charge of HE.
    Alan1.DSCN0504[1].jpgDSCN0505[1].jpgDSCN0509[1].jpgDSCN0510[1].jpg

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    Dronic69 (14th December 2019)

  6. #15
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    Alan,

    The "Hydrostatic Arming Clock" is either a Mk 1 or Mk II if the timer goes to approx. 17 mins as shown between the red marks. (The later Mks function between 30mins to 6hrs + etc).

    Here's a link to the one I posted back in 2013:

    http://www.bocn.co.uk/vbforum/thread...mine+mechanism

    Drove me nuts trying to identifying this over the years and still can't find a diagram nor photo of one!!!!

    Cheers
    Drew
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  7. #16
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    Morn Drew,
    Mny thnks yrs, I've seen several pics of clocks, but none particularly clear. Tim sent me a tech description of the mine and render safe gag etc for the fuze, I'll try to see what that might say, and mechanical aspects of mine warfare has a pic wch you can make out if you know what you are looking for. Don't hold yr breath!
    Alan.

  8. #17
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    Hi Drew,
    Wadlow, Mechanical Aspects of Naval Mining, shows two clocks, one German, the other British, for sterilizers, wch he describes under a sub-para Arming and Sterilizing. The only pic of a clock from a German magnetic mine that I can find is shown in Summary No M S 688/40, Report on the Magnetic Firing System of German Parachute Mines, of Jan 1940, wch also contains detail of its operation from starting to stopping after 17 minutes and circuit diagram etc.
    Tim kindly supplied me with that.
    Alan.

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    Dronic69 (19th December 2019), HAZORD (21st December 2019)

  10. #18
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    M Unit Dave

    DSC02409.jpg
    Last edited by millsbomber; 21st December 2019 at 03:39 PM.

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    Alan1 (24th December 2019), Bonnex (21st December 2019)

 

 
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