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Maintenance & Repairs » Hermes Rocket carriage skipping » 04-4-2021 15:20:08

PCC322
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My Rocket (around 1961 I think) types pretty well but occasionally the the escapement skips and I need to back up the carriage.  Is there an adjustment for this?

Maintenance & Repairs » Royal 10 frozen escapement » 04-4-2021 15:12:25

PCC322
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Picked up another Royal 10 in pretty good shape the other day.  Everything seems to be working except the escapement.  The linkages from the keys and space bar seem to move freely but the escapement wheel does not turn at all, along with a few rollers behind it.  My attempts to manually help it to move haven't worked and I certainly do not want to force it.

How should I approach this?  Spray it with penetrating oil and try again tomorrow?  Try to remove the wheel to try to clean it?  Something else?
 

Maintenance & Repairs » Trouble with Smith Corona Silent Super platen removal, stuck bolt » 20-2-2021 15:43:31

PCC322
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I did as you said and the platen came right out.  Everything is rust-free and pretty clean but the rubber is hard as a rock; another job for J.J.Short.

Any tips on getting the small rollers under the platen out? What about the paper bale rollers?  There is one screw on the left side but the bar seems fused.  The rollers are round, maybe I just leave them alone.

Typewriter Paraphernalia » Typewriter Desk Bolts » 20-2-2021 02:03:41

PCC322
Replies: 20

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I saw that site when I was looking around and probably could have made one of the longer bolts work but what I ended up buying was from here:

https://www.lowbrowcustoms.com/products/colony-machine-pshc-205-1-4-24-x-1-7-16-length-chrome-polished-allen-bolt-10-pack

They were the only one that I found that had a selection of lengths, though they only come in 10-packs, so I have extras now for the next four desks I buy or the next four typewriter fans that ask.

Early Typewriters » Fox part fabricated » 20-2-2021 01:55:12

PCC322
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Wonderful news!  It is great to hear you found another to use as a pattern.

For that machine it seems unlikely you'd have much success selling copies of the part you had made, but perhaps you could make the CAD drawing available somewhere on the internet in case anyone had a need to make the part again.

Maintenance & Repairs » Trouble with Smith Corona Silent Super platen removal, stuck bolt » 20-2-2021 01:20:58

PCC322
Replies: 6

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Interesting.  I didn't have it all the way to the right when I tried before.  When I was lifting the platen out with the carriage centered it felt like something on the left side was holding on to it and assumed it was the left knob.

Typewriter Paraphernalia » Typewriter Desk Bolts » 19-2-2021 15:14:47

PCC322
Replies: 20

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M. Höhne wrote:

I mounted a Royal Model 10 using M6x1 bolts just fine. I got it from someone who had jammed 1/4 x 20 bolts in there and maybe this forced the threaded holes loose enough that the metric bolts worked OK. It is tight now and solid. i always wondered why a metric thread in a US made machine, especially of that era---well maybe they weren't metric originally.

Did the metric bolts thread all the way through reasonably smoothly?  Were any of the threads missing from the 1/4x20 attempt?
 

Maintenance & Repairs » Trouble with Smith Corona Silent Super platen removal, stuck bolt » 19-2-2021 15:11:45

PCC322
Replies: 6

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I am trying to get the left knob off of my Silent Super so I can remove the platen and am having trouble getting the little plunger tip off by the left knob.  The set screws are tight holding it to the knob but the shaft turns when I try to unthread the tip of the little plunger.  Any tips on loosening this or holding the shaft better?

Also, is there some nomenclature for these parts I should learn to make things clearer?
 

Typewriter Paraphernalia » Typewriter Desk Bolts » 17-1-2021 16:55:00

PCC322
Replies: 20

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I tried an M6x1.00 bolt from the hardware store today and found that it threads into my carriage-shifted Royal 10 further than 1/4"-20 but will not get all the way through the threads without forcing, which could damage the typewriter.  This metric bolt may still be workable by stacking washers on the underside of the desk to get just the right depth to engage the threads without needed to turn too far to need forcing.

Converted to metric, the original 1/4"-24 bolt is M6.45x0.94, a 1/4"-20 (course) is M6.45x0.79 and 1/4"-28 (fine) is M6.45x1.1, which makes the metric bolt the closest of commonly available bolts but not a perfect match.  Being undersized in bolt diameter allows the M6x1.00 some room for the thread mismatch.

For my desk mounting, I also tried to use an undersized bolt with a nut on the backside of the threads.  My machine doesn't have enough room for the nut but this may for other machine with a more open design, especially later machines which used stamped sheet-metal instead of cast iron.

Studs or bolts could, in principle, be made from readily available rods with a readily available 1/4"-24 thread-cutting die but the die I found is $50, plus more for the tool to hold it.

I considered drilling the threads out and tapping slightly larger modern threads but this risks cracking the cast iron as it will be thinner after drilling.

I finally decided to buy a 10-pack of Harley Davidson bolts with the correct thread, which ran about $30 shipped.  I need two, PM me if you need a pair, I'll have extras.  Hopefully this does the trick.
 

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