Some light hints that may point you in the right direction:

Hint 1

The assembly is a part of a larger machine.

Hint 2

Several assemblies are meant to move side by side in unison.

Hint 3

The square-ish shaped piece is plastic that will wear down and be replaced.

  • Bubs@lemm.eeOPEnglish
    3·
    4 days ago

    Spot on.

    Answer

    It’s for pushing mail into an envelope. Three or four of them work in unison to push a stack of papers/inserts into an envelope.

      • Bubs@lemm.eeOPEnglish
        5·
        3 days ago

        I figured it would be a tough one.

        These are mail insertion machines I worked on for several months as a mechanic. It’s a little blurry since that were moving, but here it is in action:

        • Majorllama@lemmy.worldEnglish
          21·
          3 days ago

          That’s cool. Never seen anything like that. I love big industrial machines that exist only to recreate an action a single human can do easily lol

          • Bubs@lemm.eeOPEnglish
            1·
            2 days ago

            Look up a Pitney Flowmaster if you’re curious for more.

            Collates the inserts into stacks, aligns and opens the envelopes, pushes the insert stack into the envelope, folds and seals the flap, flips the envelope, applies a stamp, prints addresses or data, reads the barcode, ejects any flagged envelopes, and finally stacks them all in a neat row.