Trip Springs

SP 20 Trip Assembly misaligned on one side

Hi all, I’m the new caretaker of an SP 20 (serial 23442). I’ve been investigating a carriage jam issue and have found that the trip assembly on the non-operator side of the carriage (X-21755) is sitting much lower than on the operator side. Because of this, the rogue trip arm has been scraping against the …

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SP-15 Trip issue

A student emailed me last night (I got the email this morning) that one of our SP-15s had stopped working in trip. The cylinder hits part of the trip mechanism and will not move. The cylinder moves fine in print. I cannot see any obstruction. Any help to a diagnosis appreciated.

SP-15 Trip still giving fits

Last month, I posted a query about our SP-15 at UA Fort Smith, in which the trip eccentric release mechanism in the cylinder was crashing into the trip release button on the operator’s upon return to home.  (see the original post https://vandercookpress.info/2011/02/sp-15-carriage-problem/#comments). This has begun happening again, despite oiling the press every time we print …

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Restoring an SP-20 (i.e. hunting for parts)

Hello all – – I had the great fortune of saving an SP20 from the scrapyard earlier this Spring. However, it was not quite as complete as I remembered it being when I first found it last Fall. Someone clearly attempted to dismantle it sometime in its history, then abandoned it, and the only old …

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