Supporting > Engine Ancillaries
(Model) Oil field pump jacks
Johnmcc69:
Living only 2 hours North of Oil City, Pennsylvania (The "Birth" of the oil industry in the eastern half of the US), I've seen quite a lot of old oil field engines & pump jacks at old iron shows & decaying in their natural habitat. I really like the action of the jack & decided I would CAD model up a pump jack loosely based on the Stuart model from pictures, & what I could find online. I have the general mechanism modeled up & am ready to work on the pump/guide items.
I'm not sure exactly about what Stuart has going on with the 2 guide straps & bars coming off the beams main pivot attaching to the guide bar at the top of the pump...it would seem that a running fit is required there so these bars would not rotate about the axis of the beam, but it would seem that any binding from rotation would create problems. To me, it would seem that mounting these bars as fixed to the support would be a better alternative.
I'm also not sure with the workings of the actual pump itself, it seems that there is the rod driving the pump, & another rod (sleeve) on the outside of that, that looks keyed & able to move independently of the main pump rod. :headscratch:
Brian Rupnow designed a version of the pump jack here: https://www.homemodelenginemachinist.com/threads/oilfield-pumpjack-model-plans.8549/#post-95215
What HASN'T Brian designed.. & did a really nice job on it. Thanks Brian for those drawings, I picked up some good ideas.
So...if anybody who has built a Stuart model, or is familiar with it, can provide any info, I would really appreciate the guidance. If theres enough interest, I will provide drawings of my completed disaster design.
John
Ye-Ole Steam Dude:
Hello John,
Well I was born and raised in Beaumont, Texas home of the Lucas Gusher ( Spindletop ). That is where the oil industry got started and I love all old oil field equipment. I spent many hours out at the old pumping station and around the wood derricks as a kid. I would love to have a copy of your drawings when they are ready. Thanks for sharing.
Have a great day,
Thomas
Jasonb:
Tom Walshaw (Tubal Cain) did a nice version that was covered in Model Engineer some time back.
Brian Rupnow:
This is the plan set for the pumpjack I built quite a few years ago.
http://www.mediafire.com/file/zhdukxw2ef2/PUMPJACK_PDF_FILES.ZIP/file
http://www.youtube.com/watch?v=ObAfMrkiif8
Pete49:
--- Quote from: Jasonb on May 29, 2019, 07:50:07 PM ---Tom Walshaw (Tubal Cain) did a nice version that was covered in Model Engineer some time back.
--- End quote ---
Jason how many issues did it cover as it would be an ideal model for me to do. Been struggling with Arthur Ritus lately and need to get back into it.
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