Is There anyone out there with any information on this little Dolbeer logging locomotive - loads of patent diagrams
but no actual dimensions the size of the wheels would be a good starting point or the length of the chassis
Also a few articles but still no sizes !!
Help would be most appreciated
Barney
One could make some reasonable guesses from the track gauge and the height of the reverser handle.
The wheel size is likely some round number so, having estimated scale as above, I'd be inclined to tweak it so that the wheel size is the nearest number of whole inches.
Lawrence that sounds like a good way of looking at it Thanks
Just found an article in the Western Railroader publication Jan/Feb 2005 Quote "unfortunately there are no know as built specifications or builders photographs upon which to base our research" another part indicates that the cylinder bore & stroke of the geared loco is described as 8in X 12in so at least there is some indication of size and could be a starting point
It also looks like or could be Standard gauge so another measurement could be used if Standard gauge is 4ft8in !!!!!
Barney
If you can wait a week or two for some forum members to muddle their way here, I can think of a couple who may be able to help. -- Russ
No rush its just another one for my bucket list !!!
Barney
Quote from: Barney on October 02, 2023, 11:49:13 AMbore & stroke of the geared loco is described as 8in X 12in
If you know the stroke is 12", then the eccentric the rod connects to must be 6". It would be nice to have a larger dimension to work from, but that should do. I make the wheelbase 82" from that.
C ool engine, that could be a Kissin Cousin to the Falk.
MORE info' coming in and it looks like _Missouri Locomotive Company- built some brass models a few years back ( all there photos carry a copyright )
Photo of the Cottoneva Lumber companies GLOBE BUILT GEARED loco
I am good friends with the owners of MoLoCo and, if it would help, I have at least one photo of their model. I also could ask if they have plans. Let me know. -- Russ
I thought there was a drawing in the Gazette at on point? I have the article in tall timber short lines I could scan. Some nice detail pics, but no plans.img20231003_19591862.jpg
Very nice photos Chuck -Thanks
Also remembered that superb model by "Gordon Scratchman " 1/16th scale and beautiful - Of the Bear Harbour version on the forum June 17 2009
Barney
I think I have a full set of scale drawings of the Bear Harbor somewhere, have to look later today.
I have engineered and fired on that loco as well as the Falk
Is this what your looking for? They use to sell these prints at Timber Heritage but I don't see them on their web site any longer. Not exactly the engine shown in Dolbeer's patent drawing but built by the company he hired a few years after his patent.
Hi Mr Norcallogger
Just Perfect all the basics are there -many thanks for the help
Barney
I bet it was fun Driving one of those little beast - You must get down to writing a book on your life of interest !!
Glad I could help, if you need close up pictures just let me know.
Lots of fun working on those two loco's also fired and operated the small Lidgerwood Donkey there at Fort Humboldt.
These pictures are from about 2010, haven't been down there in a few years now.
Rick
Those tiny locos are filled to the brim with character!
Maybe a little off-topic, but here goes anyway:
Is there any reason to believe that patent drawings are to drawn to scale, and that they show a concrete application of the patent?
I would think that patent drawings are mainly made for showing functions. And when no scale is given, isn't it more likely that it is not a scale drawing of a concrete application?
According to the rule book of patents they are not normally to scale - for a real boring read go to https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/873878/WS0056_Patent_Factsheet_Drawings_Jan_2020.pdf - and the same ruling aplies to the US - FOR SOME UNKOWN REASON big legal battles have happened about this subject but to me its just boring so just take "a patent" drawing as a general layout of the idea"
Barney
And others say
In my relatively minor brush with patent attorneys I learnt that the trick is to be specific enough to be patentable and general enough to have the widest coverage.
Dimensioning a drawing would suggest the invention is specific to those dimensions/proportions and thus a similar product to different dimensions would not infringe, although the text might make it clear that any dimensions are illustrative rather than exclusive. Practices have evolved over the years too.
So while an old patent drawing might not be relied on, if it's all you have, it's all you have.
Just love it -your few words say it all "if its all you have - its all you have "
Thanks
Barney