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Offline ocram63_uk  
#1 Posted : 02 May 2021 14:57:51(UTC)
ocram63_uk

United Kingdom   
Joined: 07/01/2015(UTC)
Posts: 517
Location: England, Suffolk
Hi again, this has been an interesting find.
There is no trace of it on ebay as well, not that I'm bothered about it.
I managed to get this back into working conditions, removed the rust on the various internal moving 'pivots' and have decided not to put any grease nor oil on them.

This object can't be connected to a 7072, there are no cables for it.
Looking at the 1950 catalogue it seems that it needs an additional loose track section that wasn't in the box.
I connected the Yellow cable to the transformer L socket, the black cable to the O transformer socket.
I managed to get it to switch from green to red and vv by touching the yellow cable on the M track integral to the semaphore. Surely there must be a better way of doing this. A contact track ?

Do any of you, 'oldies' but with my highest respect, know how this actually worked ?

Thank you
thanks 1 user liked this useful post by ocram63_uk
Offline JohnjeanB  
#2 Posted : 02 May 2021 19:54:49(UTC)
JohnjeanB

France   
Joined: 04/02/2011(UTC)
Posts: 1,652
Location: Paris, France
Hi Ocram
My early Märklin signals look like this
IMG_4997.JPG
There are 2 generations:
* before 1952: one solenoid and a ratchet mechanism. It operates with 20 VAC (Green socket of the 280A 1950 version with 6 secondary sockets)
* 1952 and after: two solenoids operating with 16 VAC. It operates from the yellow socket. The new reference is 445A

Note: on both version of signals that era, the center rail was cut (isolated) and a half length rail with the centre rail cut was included
1950 Signals.png
The later version of the 445 from 1952 catalogue
1952 Signals.png
Both version can be controlled from any Märklin 474/4, 474/8 or more recent 7072
Note any regular 1/2 straight will do with a paper insulation in replacement of the special 1/2 track piece included with the 443G semaphores
Cheers
Jean



My layout videos
latest vid
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thanks 1 user liked this useful post by JohnjeanB
Offline ocram63_uk  
#3 Posted : 03 May 2021 09:02:41(UTC)
ocram63_uk

United Kingdom   
Joined: 07/01/2015(UTC)
Posts: 517
Location: England, Suffolk
mine is definetely pre-1952
The track is 'segmented' and underneath it two blue cables are soldered to each segment. In turn they are soldered to a distribution plate connected to the solenoid

D6E98317-0B2F-48F4-B9DE-9897EF798A13.jpeg
Offline jvuye  
#4 Posted : 03 May 2021 17:08:51(UTC)
jvuye

Belgium   
Joined: 01/03/2008(UTC)
Posts: 2,881
Location: South Western France
Originally Posted by: ocram63_uk Go to Quoted Post
mine is definetely pre-1952
The track is 'segmented' and underneath it two blue cables are soldered to each segment. In turn they are soldered to a distribution plate connected to the solenoid
....]


Like Jean said, this is exactly the way it should look

Here are the connections required:

You should have a yellow wire to power the bulb on top of the mast (12-16 V)

The black wire is connected to the electro-magnet.
Requires 24 volt pulse (the green output on older transformers)
One pulse, it turns the signal to "green", next pulse it turns it to "red"

For both, the "power return" is through the track , so make sure the track is connected to the "O" connection of the transformer

The switching of (traction) power to the center rail is internal, no need to connect anything , but you need to create an insulated section ahead of the semaphore (either using a piece of cardboard between the tongues of two tracks, or better with an isolated 1/2 length section 3600 UNN, that was normally delivered with the signal

The connections on the side are for the catenary, should you also power your trains from the overhead.

Hope this answers it.

Have fun

Jacques
Jacques Vuye aka Dr.Eisenbahn
Once a vandal, learned to be better and had great success!
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