Wednesday, April 15, 2015

Oliver escapement


The escapement on the Oliver typewriter is, for all intents and purposes, just as mechanically simple as the rest of the machine for the most part. It uses a pivot point to turn the downward movement of the universal bar upon a keystroke into an upward movement on the other end which pushes the ribbon vibrator forward and at the same time brings the escapement dog up so that the escapement gear can move one unit upon the reverse operation, when the key is let go of and the system reverts back to its rest position. The second and third photos show this as best as able.





Here is what happens upon the escapement gear and the dog;


Some notes on this subject:
If the spacebar advances the carriage but the keystrokes do not, the issue is thus not with the escapement segment. For the space-bar to work, the whole system above the upside-down T must be working.



4 comments:

  1. I will be studying these escapement pictures carefully. Though I may not have an escapement problem with my Oliver, this is a fascinating mechanism.

    What products do you use for cleaning/de-greasing/de-rusting?

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    1. It all depends on how far you want to go with it. I'm quite a bit harsher on the machines than others are, and clean with steel wool, a dremel, glass cleaner and aluminum polish. Others have chemicals they let sit on parts that, over the course of a day, allow them to just wipe off the residue.

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  2. It looks so spidery. This is a hard one to understand in two-dimensional images.

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    Replies
    1. Almost impossible, really. I took the pictures and still have a hard time recognizing what I aimed to do in them. Alas that I do not possess a video camera for these things.

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