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#Post#: 13404--------------------------------------------------
Schoenner "Imperator" Lipsia
By: Nuvolari Date: August 12, 2019, 10:37 pm
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A while ago I was able to lay hand on a Schoenner "Imperator"
Lipsia.
This is a very rare engine.
Schoenner is the brand, Imperator the model, and Lipsia the
institution is was made for.
Lipsia in German means, Leipziger Lehrmittelanstalt, roughly
translated "school supplies from Leipzig".
The engine was in very rough state, heavy brass corrosion on the
boiler and several missing parts.
If it was not so rare I would left it where it was, but now it's
a saver worth while.
Here is a mix of photos taken by the seller and me how it came…
(HTM) https://live.staticflickr.com/65535/46889176915_1921e7599a_c.jpg
(HTM) https://flic.kr/p/2errhGK
(HTM) https://live.staticflickr.com/65535/47016310764_1aacf3e840_c.jpg
(HTM) https://flic.kr/p/2eCETaE
(HTM) https://live.staticflickr.com/65535/46889176895_b1a5d069dd_c.jpg
(HTM) https://flic.kr/p/2errhGp
(HTM) https://live.staticflickr.com/65535/40785759803_64bc921aa1_c.jpg
(HTM) https://flic.kr/p/2596Fre
(HTM) https://live.staticflickr.com/65535/40785759843_b9949cd922_c.jpg
(HTM) https://flic.kr/p/2596FrV
This is how it was advertised at the time around 1906…
(HTM) https://live.staticflickr.com/65535/48525198186_6dffedd7b6_b.jpg
(HTM) https://flic.kr/p/2gW1jQ3
Last week I started on the restoration of the "Imperator".
As always took the complete engine apart.
The base was oiled in with Ballistol oil and left to do it's
magic overnight.
The real work started with tackling the heavy corroded boiler.
carefully sanded the corrosion away then polished to get a nice
brass shine again.
(HTM) https://live.staticflickr.com/65535/48505004637_1cd58ddf21_c.jpg
(HTM) https://flic.kr/p/2gUdPZp
(HTM) https://live.staticflickr.com/65535/48505004692_80fe156b18_c.jpg
(HTM) https://flic.kr/p/2gUdQ1m
Then it was taped off to recreate the nickel stripe.
(HTM) https://live.staticflickr.com/65535/48505004797_9ff85a896e_c.jpg
(HTM) https://flic.kr/p/2gUdQ3a
Then taped the nickel of for the blueing patina, and gone is the
ugly corrosion.
(HTM) https://live.staticflickr.com/65535/48504836051_ae4fcdb527_c.jpg
(HTM) https://flic.kr/p/2gUcXSK
After that I first de-nickeled the door by reverse electrolysis.
Then Polished the brass and re-nickeled it again.
And the slow start to reassembling began.
It starts to look like a gem again, but still a lot needs to be
done…
(HTM) https://live.staticflickr.com/65535/48505005117_e6468beb3f_c.jpg
(HTM) https://flic.kr/p/2gUdQ8F
(HTM) https://live.staticflickr.com/65535/48505005397_3a36e9ee27_c.jpg
(HTM) https://flic.kr/p/2gUdQdv
Next step was the rebuild of the motor it self.
And to my unpleasant surprise a not visible part of the motor
was missing.
Wenn I opened the the steam regulating chamber I noticed that
the steam slide (I hope that this is the correct englisch term)
was gone.
Fortunately this part was a universal Schoenner part, and was
also used on many other types of engines.
So I borrowed one of an other engine to make a copy.
To make things clearer I made some photos…
Here you see the original part and the new one together with the
timing rod it's connected too…
(HTM) https://live.staticflickr.com/65535/48512562101_2d4c07c498_c.jpg
(HTM) https://flic.kr/p/2gUTyyv
The H shaped plate is a spring plate.
So this is what the total look like…
(HTM) https://live.staticflickr.com/65535/48512562236_ecbfd29ec1_c.jpg
(HTM) https://flic.kr/p/2gUTyAQ
to explain the working…
The block attached to the cylinder has 3 holes.
The middle hole is the outgoing steam hole, the other two go to
the cylinder camber, one on topside, the other underside of the
cylinder chamber.
The steam slide always connects only one of the outer with the
middle outgoing hole.
So the steam coming from the boiler goes into the chamber where
the steam slide moves in (top).
Depending on which outer hole is not covered by the steam slide,
the steam pressure finds it's way on the up - or under side of
the piston and pushing it away with an upper pressure.
While this happens the other side of the piston, the piston
chamber is connected over the steam slide to the atmosphere
creating an under pressure.
This motion is constantly change by the up/down movement of the
timing rod letting the cylinder do it's action.
So the steam slide is the hart of the engine so to speak…
Anyway after all was reassembled with the new steam slide, I had
to make a new cover around the cylinder camber.
This cover has no real purpose except an esthetic look.
So this is how it looks at the end of the day…
(HTM) https://live.staticflickr.com/65535/48512741832_3c03183d39_c.jpg
(HTM) https://flic.kr/p/2gUUtZj
Another defect that was found was a crack in the steam pipe, so
also a new pipe will be made, but that's for later this weak…
Cheers,
Danny
#Post#: 13405--------------------------------------------------
Re: Schoenner "Imperator" Lipsia
By: Mi Steam Date: August 13, 2019, 1:27 am
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What you did to this old steam engine is truly an art. The way
you can turn steam engines from bad to great-looking is
amazing. It nice the way you show us how to do it and
make our hobby better for it.
#Post#: 13407--------------------------------------------------
Re: Schoenner "Imperator" Lipsia
By: txlabman Date: August 13, 2019, 5:37 am
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Another great”save” Danny.
Thank you for the detailed description and photos.
Will you make the steam pipe out of Brass and then Nickel it?
#Post#: 13411--------------------------------------------------
Re: Schoenner "Imperator" Lipsia
By: St Paul Steam Date: August 13, 2019, 6:16 am
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What MI steam said is spot on Danny, this is an incredible
restoration & you have certainly done that steam engine justice,
very nice work !
#Post#: 13413--------------------------------------------------
Re: Schoenner "Imperator" Lipsia
By: RedRyder Date: August 13, 2019, 6:27 am
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This is an awesome restoration, Danny.
You have worked your magic again!
Gil
#Post#: 13415--------------------------------------------------
Re: Schoenner "Imperator" Lipsia
By: Stoker Date: August 13, 2019, 11:15 am
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A very impressive skill-set, brought to bear once again in the
rescue of another wonderful piece of our steam history!
Well done on another great save!!!
#Post#: 13418--------------------------------------------------
Re: Schoenner "Imperator" Lipsia
By: Scorpion2nz Date: August 13, 2019, 12:36 pm
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That is a great improvement.
A long overdue scrub up for a deserving engine .
Cheers
Dennis
#Post#: 13420--------------------------------------------------
Re: Schoenner "Imperator" Lipsia
By: IndianaRog Date: August 13, 2019, 2:03 pm
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Danny, I love how your removed the boiler corrosion, but then
were able to re-blue it to match the original...very nice work!
Roger
#Post#: 13447--------------------------------------------------
Re: Schoenner "Imperator" Lipsia
By: Nuvolari Date: August 14, 2019, 2:30 am
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Thank for the support guys[emoji106], much appreciated.
[quote author=txlabman link=topic=1395.msg13407#msg13407
date=1565692625]
…Will you make the steam pipe out of Brass and then Nickel it?
[/quote]
Yes Charlie, like the original would have been made, shaped to
fit, polished and then nickeled.
Same story with the complete water gauge armature that was
completely missing.
Both are fitted to the engine now.
(HTM) https://live.staticflickr.com/65535/48534280981_e435e5dd79_c.jpg
(HTM) https://flic.kr/p/2gWNSPX
(HTM) https://live.staticflickr.com/65535/48534281081_599e3fca6c_c.jpg
(HTM) https://flic.kr/p/2gWNSRF
The few scratch marks you see on the underside of the water
gauge armature, are still left after removal of the corrosion.
Probably made by a clumsy person working on the water gauge
armature, long long time ago.
They are so deep that I didn't wanted to sand them completely
away, because this will thin only the boiler wall.
And also they seem huge now, but in reality they are hardly
noticeable.
You see this only now due to the focus of the camera.
As you can see the whistle and safte valve are also back on the
engine.
The whistle was completely taken apart, and a good thing I did
this.
Because inside sits a rubber O ring that suppose to seal the
steam from the boiler off while not in use.
But after 100years that o ring has become hard and brittle
having no sealing effect anymore, so perfect moment to replace
it.
The only original part that still needs to be refitted is the
tap on the bottom of the boiler that is connected to the water
feeding pump.
Unfortunately the the tread on that tap is ruined.
next time I will show how that can be fixed and thereby preserve
the original tap.
All other parts like the water filling lid and complete water
feeding pump must be replicated, but this will be described
later…
#Post#: 13496--------------------------------------------------
Re: Schoenner "Imperator" Lipsia
By: Nuvolari Date: August 15, 2019, 3:58 am
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…well the tap has been repaired.
The factory thickness of the tread is M4.5.
What I did is tuned away the old damaged tread on the tap on my
lathe until it was 3mm.
Then I made a piece of M4.5 wire and drilled the inside to 3mm.
(HTM) https://live.staticflickr.com/65535/48542296382_c12cd037a9_c.jpg
(HTM) https://flic.kr/p/2gXvXww
Then the tap is soldered into the new tread, and after the tread
is cut to the right length.
And repaired is the tap…
(HTM) https://live.staticflickr.com/65535/48542296072_f040b05e9e_c.jpg
(HTM) https://flic.kr/p/2gXvXrb
Next was the missing fill cap.
Here a new fill cap needed to be made as well as new wire into
the boiler.
For the wire an insert was made and soldered into the boiler.
And the cap itself is pure lathe work with brass and nickeled
after.
(HTM) https://live.staticflickr.com/65535/48542148071_8edaf52bac_c.jpg
(HTM) https://flic.kr/p/2gXvcrr
At this stage the steam engine is actually serviceable.
But this engine is not complete with the water feeding pump.
Having an original on an other engine is a great help creating a
replica.
In doing so, an old broken tap and quick cupeling where idle to
integrate to this job.
The pump is semifinished now, but it starts to look good.
The replica and original…
(HTM) https://live.staticflickr.com/65535/48542296207_6707852973_c.jpg
(HTM) https://flic.kr/p/2gXvXtv
And back to the work shop…
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