200A and 202 reproduction
frames back
in stock.

clifforddward
I have what are probably newbie questions:
1) On a R55 generator, when did the jam nut change from a square nut to a hex nut?
2) Did the changes take place at similar times for Toronto and Kansas production?

I am restoring ramping up to restore some L327, L427 and a 427k lanterns...just want to be certain I get the generator correct...I believe all of these should use the square jamb nut version, correct?

As reference point here are photos (from that auction site) of "yellow box" R55 generators from Canada and USA...both have square jamb nuts:
R55-Canada-s-l1600.jpg  1-R55-USA-2.jpg


These more recent ones have a steel hex nut:
R55-s-l1600.jpg  R55 Generator-seller from Canada.jpg 
R55.jpg 
 
Cliff Ward
Cary, North Carolina
ICCC #1955
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Tgarner01
I'm not sure on the change from square to hex, but depending on the years your lanterns were produced they may have originally came with a Q99 generator. Not as Handy as the R55 but definitely have the early look to them. Q77 gens are something to look into as well.
Toby Garner
ICCC #1939
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legendre
Not to be too pedantic, but isn't that part properly called a gland nut or packing nut? 

To me, a jam nut is the second, locking nut in a double-nutted arrangement.
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clifforddward
You could be right for the proper term...Certainly your description of a "jam nut" is correct.  I had seen the term for this fixing somewhere in a lantern discussion so used it here.

In any event it is the history of when the change between types of fixings took place that is the main focus of my inquiry.
Cliff Ward
Cary, North Carolina
ICCC #1955
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Gunhippie
Coleman refers to it as a "jamb nut" in their parts lists.

It's gland nut where I come from. Packing nut is on the valve and eccentric stem to compress the graphite packing.
It's priceless until someone puts a price on it.
Walk a mile in a man's shoes before you criticize him--then you're a mile away, and he has no shoes.
Texan's last words: "Y'all--hold my beer--I wanta' try sumptin'."
Timm--Middle of nowhere, near the end of the road, Oregon.
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1hpycmpr
Interesting question, Cliff.  Aside from the comment above regarding the presence of the Q99 on the earlier lanterns, I would think that any R55 made during that time period would have the square as opposed to the hex. Still doesn’t answer your question of when the changed occurred but the square ones would probably as period correct as possible.
Mark
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clifforddward
Thanks all for the comments...while we don’t have an answer on the time for switch from square to hex, I have been studying every close up photo I can find and it seems L427 and earlier lanterns with a R55generator had square fitting....so that gives me the info I need.

hopefully at some point we’ll learn when the actual change occurred.
Cliff Ward
Cary, North Carolina
ICCC #1955
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mgmlvks
In any case - please be aware that some recent R55's are OPPOSITE of expected relationsip between cleaning lever and tip position!
Mike, ICCC member #1156, Slant Saver Group #011, 275 Appreciation Syndicate #0215, FAS #20 - Confusing Future Generations of Collectors One Lantern at a Time
"In order for the light to shine so brightly, the darkness must be present"
Francis Bacon
(and - for those who have asked - avatar from postcard and says "Coming Home by Rail".  https://c1.staticflickr.com/5/4595/27430282209_39a564be00_z.jpg
 
 
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clifforddward
Thank you for the info on orientation (up bs down)...I had read about that...from what I see these problem R55 generators all have the hex nut, and as you say are more recent production.
Cliff Ward
Cary, North Carolina
ICCC #1955
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warren
The hex nut started at the end of the blue/white box and all the green boxes are hex.  I have one hex in a blue/white box and will see if I can find a date.   The hex is a replacement and probably 50+ years after the last lamp/lantern that used these gens was shipped from the factory.  So if you want factory "proper" you would want a square nut.

ANTIQUESWV on Ebay
#1 in the 223B club
Gatlinburg, TN

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clifforddward
Thank you for the timeline information Warren...exactly what I was looking for.  Trying make my restorations accurate to "as built" so sounds like square nut will be the rule of the day!
Cliff Ward
Cary, North Carolina
ICCC #1955
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Gunhippie
mgmlvks wrote:
In any case - please be aware that some recent R55's are OPPOSITE of expected relationsip between cleaning lever and tip position!


Hear, hear!

This quirk cost me several hours of frustration and one broken pricker lever when I tried to reverse it with a pair of pliers.
It's priceless until someone puts a price on it.
Walk a mile in a man's shoes before you criticize him--then you're a mile away, and he has no shoes.
Texan's last words: "Y'all--hold my beer--I wanta' try sumptin'."
Timm--Middle of nowhere, near the end of the road, Oregon.
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