- Mar 2025
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Local file Local file
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A furtherrefinementinmaking two-colourribbonsisthe useofacentreliningmachine, which automatically drawsathininsulatinglineon theribbon.A transparentgumsolutionispumpedbyairpressure througha stainless needle whichpreventsthecolours from running.
Center lining machines are used to make bichrome typewriter ribbon. It operates by drawing an insulating line on the ribbon and transparent gum solution is pumped through a needle using pneumatic pressure to keep the two colors from running into each other.
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- Jul 2024
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Part 4: COMPLETE Olympia SM3 Service and Repair Series: STICKY RIBBON LIFTER by [[The HotRod Typewriter Co.]]
The universal bar lifts the ribbon vibrator.
Adjustment points to adjust the ribbon lift heights for issues with red/black on bichrome use.
Maximum travel of the universal bar adjustment screws on crossbar that attaches to springs. timestamp 5:29
Screws at the ends of the cross bar which are attached to the key springs can be adjusted slightly to provide for heavier or lighter touch control. Timestamp 6:07
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