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Where can I find the documents pertaining to mechanical interlocking systems, specifically ones used in Indonesia (made by Siemens-Halske) ?
Currently learning about Indonesian mechanical signalling system (still used in some areas, particularly Sidoarjo-Ketapang).
There's a mention of interlocking system using these sets of cranks which lock the levers, bars and dogs that can release or lock other cranks (and therefore levers), shown exactly identical to the image above. However, there has been no documents publicly available that gave enough details about these.
Since I found this exact illustration in English, I believe there are documents somewhere about how this works, but luck hasn't been in my favour for the past three weeks researching it. Any suggestions on where to look? Or if anyone has documents abt these, would you be so kind to share it? Thanks.
u/Flaky-Fold7129 — 9 days ago