Author Topic: Weird needles???  (Read 3478 times)

AvastMH

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Weird needles???
« on: May 22, 2012, 01:55:16 pm »
http://s3.amazonaws.com/oldweather/ADM53-44343/ADM%2053-44343-018_0.jpg

At 11 o'clock something in the way of needles gets lost o/b...any ideas as to the type of needle please? the last word looks like Percusssion - and so makes less sense than I can say!
Thanks!






Caro

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Re: Weird needles???
« Reply #1 on: May 22, 2012, 02:22:07 pm »
No idea! The middle word looks a bit like stretcher.

Maybe striker, percussion? Something to do with detonators? Help!

How about this:
"The gun is fired by means of an electric needle, or a percussion striker, fitted inside the block."
http://www.hnsa.org/doc/br224/part1.htm
« Last Edit: May 22, 2012, 02:39:16 pm by Caro »

Helen J

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Re: Weird needles???
« Reply #2 on: May 22, 2012, 02:58:52 pm »
Yes, I would go with 'needles, striker/stretcher, percussion' - the naval way of inverting everything doesn't help it make sense ...

Tegwen

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Re: Weird needles???
« Reply #3 on: May 22, 2012, 03:01:40 pm »
I think that is it. Note that the next line has the letters 4.7. My guess is that these are the percussion striker needles for her 4.7" guns.

Bunting Tosser

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Re: Weird needles???
« Reply #4 on: May 22, 2012, 03:13:21 pm »
I think that is it. Note that the next line has the letters 4.7. My guess is that these are the percussion striker needles for her 4.7" guns.

I believe so. Equivalent to the "firing pin" we're used to in small arms weapons.  ;)

AvastMH

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Re: Weird needles???
« Reply #5 on: May 22, 2012, 03:32:34 pm »
Cor! Real artillery stuff.  :o
Thanks all for putting the solution together.  That does make sense! She's been dashing around like a mad cat bagging boats in the chilly northern seas.

Helen J

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Re: Weird needles???
« Reply #6 on: May 22, 2012, 03:45:53 pm »
Cor! Real artillery stuff.  :o
Thanks all for putting the solution together.  That does make sense! She's been dashing around like a mad cat bagging boats in the chilly northern seas.

I love that mental picture of what Hildebrand's up to!   ;D

Tegwen

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Re: Weird needles???
« Reply #7 on: May 22, 2012, 04:17:51 pm »
Just wait until she gets new 6" guns and can put away those 4.7" tiddlers.  ;)

AvastMH

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Re: Weird needles???
« Reply #8 on: May 22, 2012, 05:05:54 pm »
 :D :D :D

AvastMH

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Re: Weird needles???
« Reply #9 on: May 22, 2012, 05:07:23 pm »
Come to think about it - How much do those things weigh?  If a ship is stack full of heavy artillery is it more or less stable in rough seas?  :-\

Tegwen

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Re: Weird needles???
« Reply #10 on: May 22, 2012, 05:36:13 pm »
The naval 6" BL gun that Hildebrand got in exchange for her 4.7s weighed 16,875 lb (7,654 kg) each. (Thanks wikipedia, just in case I appear some sort of gun nut. ) (http://en.wikipedia.org/wiki/BL_6_inch_Mk_VII_naval_gun).

The 4.7s weighed much less at only 4500lb (again thanks wiki)( http://en.wikipedia.org/wiki/QF_4.7_inch_Gun_Mk_I%E2%80%93IV) so the weight increase per gun was over 12000 lb or for 8 of them was almost 100000lb, which is about 50 tons. I am sure there were cases where the extra weight of guns destabilised some of these ships, particularly if they are mounted high. However, some of these ships were dual purpose, passenger and cargo, and of course there would be none of that in them so it may be that the added guns had little effect other than to require some ballast removal.

Several ships seem to take in over 100 tons of coal at a time, so again the weight of guns may be insignificant. 

Just in case I sound as if I might know what I am talking about, I confess now that I dont, so should probably shut up now!

K
« Last Edit: May 22, 2012, 11:35:28 pm by Tegwen »

AvastMH

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Re: Weird needles???
« Reply #11 on: May 22, 2012, 07:00:49 pm »
" weighed 16,875 lb (7,654 kg) each"  Gulp - that's monster :o  Those guns really are big..my dad got crushed inside the gun turret of one of them when some character moved the turret whilst dad was in there fixing some bit or another.  >:( He became very familiar with a hospital bed for the next few months odd....needless to say!  :(  But he fixed OK in the end  :D

Tegwen

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Re: Weird needles???
« Reply #12 on: May 22, 2012, 11:40:38 pm »
They were nothing compared to the guns on battleships, even then for example the 13.5" guns weighed 168,000 lb (76 tonnes), each.

A few of those would have destabilised your Hildebrand.

What ship was your dad on?

AvastMH

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Re: Weird needles???
« Reply #13 on: May 23, 2012, 08:09:02 am »
The Sheffield during the latter half of the war - he never spoke about ships before that - he fell in love with the Sheffield.  I remember going round the Belfast with him in the early 70s and he was like a kid in a sweet shop.  :D
13"+ guns  I didn't  know they came that big - then again if you are shooting at war ships I suppose it's what you need.

studentforever

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Re: Weird needles???
« Reply #14 on: May 23, 2012, 08:43:08 am »
The logs of Sheffield are available for public access, you could go down to the Archives and read the day to day happenings which your father experienced, just like you read these pages. Just a thought.