Bunker equipment

Discussions on the fortifications, artillery, & rockets used by the Axis forces.
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P. Heijkoop
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Post by P. Heijkoop » 04 Oct 2004 21:34

El15.JPG
Kabelanschlußstelle 10-paarig

See above

el4.JPG
Funkinnenanschlußdose

These are the boxes which hung in the Funkraueme and proved a connection to the transmitters and recievers. The Funkinnenanschlußdose was connected to the Funkaussenanschlußdose (FuIAd) in the entrances (antenna shafts). Per 1 set of antenna niches one FunkInnenanschlussdose was used. The Festungsantenne and the interior (the real connection-bit of the FuIAd) were normally stored in the FUnkschrank. In a 618 this was placed in the antenna room

Antenne.JPG
Funkaussenanschlußdose

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Erik E
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Post by Erik E » 04 Oct 2004 21:41

Thanks again!
This goes fast :)

More:
(EL3 and El3a from a 636)
The first one you have seen yourself :wink:
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P. Heijkoop
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Post by P. Heijkoop » 04 Oct 2004 22:53

Will reply tomorrow to give a complete answer.
Perhaps it's better to make an integrated contribution
about the relation between the different appartus

P

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Dan Mouritzsen
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Post by Dan Mouritzsen » 05 Oct 2004 06:18

Hi Erik

Do you have a close up photo of that text on el4.JPG ?

Regards

Dan Mouritzsen

8)

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LegalAssassin
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Post by LegalAssassin » 05 Oct 2004 16:01

Great initiative! I'll add what I find most interesting, technical sketches, to it. (Thanks to Radar for helping me out a long time ago)

Heating

Wt 80
In order to make the large betong structures such as bunkers and especially fortresses possible to live in for a longer time, heating would be required. Early makeshift solutions such as building a stove into the bunker was time consuming as was finding a stove which would fit a bunker. This proved a standard solution was required, and such was the German decision.
The company W. E. Haas und Sohn (Sinn in Dillkreiz) was given the contract of creating a "[...] for fortifications designed oven, giving heat worth 5000-6000 kcal/h while remaining gas- and pressure proof [...]". This "contraption" was given the name Wt 80. The stove was manufactured by this company until another function was needed which had been left out them improve the design.

See manual with technical sketch and the drawing below.

Wt 80 K
It was not long until one important function had been forgotten when the Wt 80 was designed. For this, an improved version, the Wt 80 K, was developed. What made it different was that while on the earlier model the exhaust was on top of the device, on the revised version the exhaust was mounted on the side and on top was a "Kochplatte" (cooking plate), which added the K to the name.
With this new feature you could boil water and heat food, something which had a large positive impact on morale during the defence of the Westwall, winter 1944-45.

See 3D model/photo and drawing below.
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Erik E
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Post by Erik E » 05 Oct 2004 19:41

Do you have a close up photo of that text on el4.JPG ?
:wink:
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Erik E
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Post by Erik E » 05 Oct 2004 19:50

Important notice

I forgot to add this in the start of this thread:

The photos uploaded in this thread will be used to continue improving the bunkergallery in the Axis History Factbook. By uploading photos in this tread, you agree to let the AHF use your photos, documents etc. for further works related to the bunkerarticle. Only photos taken by yourself (Or which you own the copyright to) can be used.
Credit is ofcourse given to those who participate.

When that is said, the photos uploaded before this message, will not be used unless you give additional approval for use!

Erik E

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Erik E
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Post by Erik E » 05 Oct 2004 20:40

WT80K
Maybe not the best setting for cooking :wink:
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Erik E
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Post by Erik E » 05 Oct 2004 21:26

Central heating was used in large bunkers where regular ovens didn`t provide enough heat. The system can often be seen in hospital bunkers, headquarters etc.

The main part is the boiler oven.(Warmwasserkessel) This came in 17 different versions, depending on the size of the bunker. The smallest with 18 litres of water, the largest with 139 litres. On top of the oven is a small manometer, showing the pressure in the system.

Just above the oven, a expansion tank were placed. (Ausdehnungsgefäß für Warmwasser Heizanlagen) This tank came in 4 different versions, from 35 to 100 litres. From here, pipes went out to radiator ovens placed in each room which needed heating.

As an option, the outgoing hot water line could go via a airheater connected to the ventilation system. The water would simply cirulate through a spiral placed inside the incoming fresh air pipe, and provide some heating before the air was let into the bunker. (Warmwasser Lufterhitzer)
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Erik E
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Post by Erik E » 05 Oct 2004 21:27

Air heater:
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P. Heijkoop
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Post by P. Heijkoop » 06 Oct 2004 10:37

Hi All

El9.JPG
SIicherungskasten 6-paarig: fuse-box for telephone connections

el3.JPG
fortress telephone exchange for 30 lines
Festungsvermittlung zu 30 Ltn

wit on top two battery-boxes (Batteriekasten Groß)
and to the right the main internal cable-divider (Hauptverteiler, 60 x 60 DA) with below the KEVs
El3a: this is the frontboard of the telephone exchange with the connection holes. In stead of the normal cables to plug into the connection holes,
the fortress exchanges used bakelite connector

Peter

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Erik E
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Post by Erik E » 06 Oct 2004 15:26

Very nice Peter :wink:

Here`s a few more items:
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procrazzy
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Post by procrazzy » 06 Oct 2004 19:27

8O I never knew a bunker could have so much equipment!

cheers

procrazzy

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LegalAssassin
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Post by LegalAssassin » 06 Oct 2004 21:11

Erik E wrote:Important notice

I forgot to add this in the start of this thread:

The photos uploaded in this thread will be used to continue improving the bunkergallery in the Axis History Factbook. By uploading photos in this tread, you agree to let the AHF use your photos, documents etc. for further works related to the bunkerarticle. Only photos taken by yourself (Or which you own the copyright to) can be used.
Credit is ofcourse given to those who participate.

When that is said, the photos uploaded before this message, will not be used unless you give additional approval for use!

Erik E
Please, feel free to add what I posted above, except for the Wt 80/Wt 80 K sketch which I'm not sure where I found...

Also, I think we should have blueprints, sketches, circut topologies and whatever else might be interesting. If anyone has the original WW2 copy, they aren't affected by copyright any more, right?

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P. Heijkoop
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Post by P. Heijkoop » 06 Oct 2004 21:45

alarm.JPG

I don't know this type exactly (perhaps a navy one)
but the best name to describe it is as an 'Alarmwecker'

telefon.JPG
Normal bunkertelephone (Festungsfernsprecher 38)
with a post-war electricity box

Kleine festungsvermittlung ob37.JPG
Indeed the Festungsvermittlung zu 10 Ltn.
The smalles was for 5 Ltn. Then there was one for 10, 20, 30 & 40 lines.
These were al very similar wall-versions, only differing in size.
The Festungsvermittlung zu 100 ltn is a standing switchboard, similar to the Große Feldvermittlungen, but then in a steel frame.

Peter

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