Russian ML-8 booby trap igniter parts

[pzgr40]

I was able to borrow a ML-8 booby trap mechanism as to put it into a 3D drawing. It is quite complete exept for one part, the ring or ring halves keeping the steel ball inward that keeps the firing pin for the initial firing cap in safe position. As I understand from the drawing and description, a wire (red arrow) is wound a number of time around these scale halves (purple arrow)? If they are scale halves..... Pulling away this wire after removing the red cap initiates the firing pin. Or am I wrong. Who knows what this mechanism looks like exactly?

 

[The Lieutenant]

I was able to borrow a ML-8 booby trap mechanism as to put it into a 3D drawing. It is quite complete exept for one part, the ring or ring halves keeping the steel ball inward that keeps the firing pin for the initial firing cap in safe position. As I understand from the drawing and description, a wire (red arrow) is wound a number of time around these scale halves (purple arrow)? If they are scale halves..... Pulling away this wire after removing the red cap initiates the firing pin. Or am I wrong. Who knows what this mechanism looks like exactly?

Almost. But it's more tricky. I'll post the description later....

in the meantime I'll post a couple of photos with the components of the ML-8 and a couple of photos of the didactic model I made.

 

[pzgr40]

I am looking forward to your awnser

 

[The Lieutenant]

I am looking forward to your awnser

Here we are.
The description is taken from an unofficial manual but coincides with what is reported on CAT-UXO. I believe I have a Russian manual somewhere that describes both the ML-8 and the ML-7. As soon as I have time I'll start looking.

 

[pzgr40]

It is about the purple part (a two halves ring ? I suppose), and the way the nylon wire keeps it in it's place. Also the red cap on the exaple I drew does not have the wire connected to the red cap, so I suppose it has a small bead or something alike it to pull the wire with.
Below the firing cap there is no rotating disc.
Hoping you can help me with the last detail I am looking for.

Thanks in advance,
Regards, DJH

 

[Eggburt1969]

I wrote a 1,750+ word description on its operation and general use for the company I work for some time ago, but I'm interested to see if anyone else figures out how it works, as it took me some head scratching. Plus I'm not 100% sure I got it right?

Let's just say that the bit in the igniter assembly, which operates the striker ball release system isn't shown in the sectional diagram in the Soviet/Russian manual.

The bit that the igniter pull-cord is attached to can be seen in some images if you search.

 

[pzgr40]

Just found a picture on the internet showing the plate over the firing cap. So just got a very little further

 

[pzgr40]

Well, I improved the drawing by adding the slider (yellow), but logic tells me that the order of functioning is that the slider is first rotated away from the firing cap hole, and than the firing cap is ignited. With the other way around the slider would not be of much use if the firing cap still ignited the pyrotechnic fuze. SO the question is , how do you pull a rope and first rotate a slider and than release a ball that releases the firing pin

 

[AKON_]

That's how I understand it
The hole with the ball is closed by a lining (5), held by a nylon thread (6), wound on it and the sleeve in three rows and having a length of 0.8 cm. By means of the nylon thread, lining and ball, the spring-loaded drummer is held in the cocked position. One end of the thread is rigidly fixed in the nut (18) of the trigger mechanism, the other end is looped to the plate (7).The plate is fixed in the sleeve (1) with the possibility of turning it 90 degrees if you pull the thread.

: 3 openings at 120 degrees are intended for exhausting gases from the igniter into the free space outside the igniter, and when the composition burns, the gases also escape out of the igniter.

: The picture shows a detail of the thread from the initiator's side, and at the end you can see the torn eye which is strung on plate (7) .

Akon

 

[pzgr40]

Looking at the green sleeve over the wire I am not far off with my clamp in the drawing, looking at the indentations in the sleeve , the clamp has more fingers. And I did not Use a sleeve over the wire i.w.o the clamp, which I can still add.
Or am I thinking wrong?