Author Topic: Petters Pump (Read 3412 times)

maury · « **on:** August 30, 2025, 05:18:36 PM »

Time for a new project. I saw a project on Smokstak where a guy was restoring a Petters Pump, and I just couldn't wanting to build a model of it. The project was mostly dis assembled, and I'm not sure all of the parts were there. Additionally, I was unable to see the cylinder and valving internals from the pictures. Additionally, I don't have access to the actual pump, so I had to print out the pictures and scale the design from that. So this will not be a scale model, but a close approximation with a little artistic license.
I'm at the point where I have most of the parts modeled in Solidworks, and have built an assembly and have done checking for the parts fitting properly. There are still details to address, mostly with the valving, so it continues.

This will be an excellent companion for the Webster Chicago I'm in the process of completing. The project will be made from castings, so there will be a lot of pattern work. If my health holds up ok I'll be pouring the parts in aluminum, then on to the shop....

maury

crueby · « **Reply #1 on:** August 30, 2025, 05:33:27 PM »

Neat looking pump! Will be watching along.

Dave Otto · « **Reply #2 on:** August 30, 2025, 05:34:35 PM »

That brings back some memories, will be fun to follow along.

Dave

maury · « **Reply #3 on:** August 31, 2025, 02:10:59 PM »

Thanks for checking in guys.
Dave, I have the memories too. Also still have the Gould Pump. Maybe someday I'll finish my Pacific and connect it up.

maury

CI · « **Reply #4 on:** August 31, 2025, 04:00:44 PM »

Looks great !

.

Jasonb · « **Reply #5 on:** August 31, 2025, 04:02:58 PM »

What sort of size are you aiming for? and what is that in relation to the orginal?

maury · « **Reply #6 on:** August 31, 2025, 05:30:26 PM »

Thanks for the comments.

Jason, From what the pictures of the original look like, its about half size. On the model the pulley and bull gear are about 6in and 5 1/4 in. The bore is 1 in and the stroke is 2 in. I wanted about this size to go with the Webster Chicago I'm Building.
maury

Alyn Foundry · « **Reply #7 on:** August 31, 2025, 07:48:06 PM »

Is this a JB Petter of Yeovil Somerset?

Charles Lamont · « **Reply #8 on:** August 31, 2025, 08:02:21 PM »

Seems to be Peter's Pump Co, Kewanee, Illinois

crueby · « **Reply #9 on:** August 31, 2025, 08:30:09 PM »

Quote from: Charles Lamont on August 31, 2025, 08:02:21 PM

Seems to be Peter's Pump Co, Kewanee, Illinois

I dont think so - that one made hand powered pumps like you'd see out in the yard. And it only has one 't' in the name.

maury · « **Reply #10 on:** September 01, 2025, 05:45:02 PM »

Y'all, the pump is the Petters pump - Mfg. by Petters Pump Co. Kewanee, Illinois. It's printed on the air dome.
They have made several versions best I can find. One version is a hand pump with rack moving the piston and a partial pinion on handle for manual pumping, It uses the same or similar pump parts as the one I'm modeling.

Jasonb · « **Reply #11 on:** September 01, 2025, 06:24:09 PM »

Seems the advert had one T as does the one on Smokstak with the fast and loose pullies

https://www.smokstak.com/forum/threads/peters-belt-driven-piston-type-water-pump.215718/

maury · « **Reply #12 on:** September 01, 2025, 07:34:31 PM »

Yup, it seems you are correct. Seems my eyesight is also going bad. I'll have a lot of stuff to correct, including my pattern for the air dome.
Thanks for the good catch.

maury

maury · « **Reply #13 on:** September 20, 2025, 08:49:09 PM »

After almost 3 weeks on medical time out I'm feeling better and soon to be back. In the mean time I sent the patterns for the pump design to a friend who cast them for me. I think my foundry days are soon coming to a close. I'll miss it! I'm quite pleased with the castings-he did a great job- and can't wait to start cutting metal-After Dr's approval.
Enjoy the pics.

samc88 · « **Reply #14 on:** September 20, 2025, 09:41:12 PM »

Nice looking castings Maury, glad to hear you are on the mend

CI · « **Reply #15 on:** September 20, 2025, 10:15:02 PM »

Looks great !
.

maury · « **Reply #16 on:** September 21, 2025, 05:48:39 PM »

Thanks for tuning in guys. Hopefully I'll be soon back in the shop cutting metal.

maury · « **Reply #17 on:** October 17, 2025, 02:53:01 PM »

I Had some shop time, so I thought I'd do an update. The base had only a little machining,and was fairly strait forward.
The same for the pulleys, still need to make the bearing for the idle pulley and do a keyway for the drive pulley. The gears were made on my Barber Coleman gear hobber. I needed to make a work arbor for the bull gear to support the outer rim to avoid chatter while hobbing.
I worked on the cylinder and inlet and outlet pipes. Unfortunately the pipes were badly chilled. I could not machine them, even after two annealing sessions in my oven. Maybe I'll have to make them out of bronze or aluminum.I very much prefer iron, and am having talks with the foundry about thus. My hope is that the melt was contaminated and the castings weren't chilled.
maury

CI · « **Reply #18 on:** October 17, 2025, 10:25:36 PM »

Nice castings, and pretty intricate too !
Following along.

Jasonb · « **Reply #19 on:** October 18, 2025, 07:16:21 AM »

I wonder if adding some more machining allowance to the pipe patterns would help with reducing the risk of chill. Would be easy to make the flanges thicker.

The lugs for the tie rods may not be so easy, possibly add a cylindrical extension top and bottom that can be machined away like a spot face or extend them outwards and accept a fettled end which the removal would require. Both would put more metal where the casting is thin and help slow cooling.

What does the air dome machine like? that would indicate if there is contamination or just the thin flanges and lugs cooling too fast on the pipe castings.

maury · « **Reply #20 on:** October 18, 2025, 02:29:54 PM »

Thanks for the comments guys.

I may end up adding more metal to the machined surfaces as you suggest.

First I want to make sure that casting the metal was ok. I once used a foundry which is now gone. I once had them make castings with area that needed to be drilled that had a 1/8 cross section. There was no issue with chilling on these castings, but the has a 2000 lb ladle. I suspect with my latest castings, the metal has cooled too much before pouring, and if my mold was at the end of the pouring line it may have cooled.

I also had some castings made by another foundry that had hard spots on a thick flywheel. When asked they admitted pouring my castings from a melt that was for a customer making some kind of pipe flanges. They added something to the melt that hardened the iron. After that, I specified Class 20 grey iron only.

maury · « **Reply #21 on:** October 25, 2025, 10:33:09 PM »

Ok, I'm finally getting around to posting these parts. I'll be waiting for the new CI parts from the foundry. But in the mean time I think I'll have some adventures in powder coating the parts I have.

CI · « **Reply #22 on:** October 25, 2025, 10:40:07 PM »

Nice !
.

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Author Topic: Petters Pump (Read 3412 times)