Zeiss Ikon Contina: film slips over sprockets

[El_Stino]

How could it be avoided for the film to not be caught on the pins?

Sometimes I see the exposure counter on the bottom of the camera move, but most of the time it doesn't. This means the double exposure-safety prevents me from pushing down the shutter release normally.

Any suggestions are much appreciated.

 

[250swb]

Are the film advance gears rotating? Is it something to do with the rewind mechanism being stuck?

 

[MattKing]

threads combined

 

[El_Stino]

Are the film advance gears rotating? Is it something to do with the rewind mechanism being stuck?

I probably didn't explain it too well, apologies for that. The advance knob and winding spool are turning perfectly fine, pulling the film across the back of the camera as intended. The little sprocket gears (which only have three teeth in this camera) are only sometimes caught by the sprocket holes in the film. This means they only turn sometimes (they aren't stuck), which in turn means the exposure counter linked to it rarely advances to the next number. Because of this, the double-exposure safety prevents me from pressing the shutter release the normal way.

 

[El_Stino]

threads combined

Thank you. Apologies for the double thread, I wasn't sure where the best place to post it would be.

 

[ntenny]

If the sprocket wheel isn’t damaged, and it works properly when you twiddle it by hand, it sounds like maybe the pressure plate isn’t holding the film in place. Does anything feel out of whack in the pressure plate?

-NT

 

[El_Stino]

If the sprocket wheel isn’t damaged, and it works properly when you twiddle it by hand, it sounds like maybe the pressure plate isn’t holding the film in place. Does anything feel out of whack in the pressure plate?

-NT

Thanks for your reply. That might be the cause, but there doesn't seem to be anything obviously wrong with the pressure plate. It still springs back when gently pressing on it.