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Jacobson Machine Mfg. Co., Warren, Pennsylvania

Last Subscription Date
12/10/2019
Re: Jacobson Machine Mfg. Co., Warren Pa.

Yes, we did that. Back then we didn't understand running engines on propane and didn't know anybody that did so it was changed to a gasoline setup to get it to run. I'm pretty sure a few years later we would have done things differently. When we had it, it had that gray paint on it but I think it was black underneath. All of the machined surfaces were unpainted. I really liked this engine. I recently referenced it in another thread because of the way it governs. It governs like our 50hp Otto by changing the length of stroke on the intake valve using the valve like a butterfly in a carb. The temperature gauge on the cooling system is all original as it came from the university.
Jeff,

I figured it must have been Jim that had cut the piece off and welded on the plate for the mixer. Not sure why he didn't screw the mixer onto the piece that he cut off? As for the other post referencing this engine...I must have missed that one. I did see where you had referenced an Otto that was in Washington state that Jim tried hard to buy. That Otto sets about ten feet from the Jacobson, has the belt drive oiler, water funnel cast into the side of the cylinder and does have Feet Off cast in the back of the base. I think Jim tried to trade a large Edison Bi-Polar Dynamo that Keith B ended up with and is in Texas now if I heard correctly.
 

JSWithers

Registered
Age
63
Re: Jacobson Machine Mfg. Co., Warren Pa.

Wayne,
I think dad felt the gasoline mixer or carb would hang to low on the engine.

I referenced it in the thread for crossley timed hot tubes because a duetz governing system was referenced and it is the same as our 50hp Otto. And the jacobson uses a similar set up.

Yes we tried to trade a bipolar for the Otto. Yes it went to keith on trade for the big New Era we have. Where it went from there I don't know. That was on display at Rollag for awhile. It needed a cleaner place to be displayed.

I think there's a good chance you have some other engines of dad's since a lot of things went to Clyde in that era. The Otto was the one engine I had really hoped for as the 21hp size is my favorite Otto and that one is an old schliecher style.

Dennis, I did not mean to hijack this thread. Apologies. Jeff
 

Don Worley

Subscriber
Last Subscription Date
07/10/2019
Re: Jacobson Machine Mfg. Co., Warren Pa.

Bulletin page showing a large tandem engine possibly made in Meadville Pa. about 1906. Don't know if any were actually made.
 

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Bryant

Subscriber
Last Subscription Date
06/15/2020
Re: Jacobson Machine Mfg. Co., Warren Pa.

Denis here a bullseye and a unito . I can only post one picture at a time
 

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Don Worley

Subscriber
Last Subscription Date
07/10/2019
Re: Jacobson Machine Mfg. Co., Warren Pa.

For those of you registering engines, please include the Underwriters tag number if the engine has one. Thanks Don
 

Denis Rouleau

Subscriber
Age
70
Last Subscription Date
07/10/2019
Re: Jacobson Machine Mfg. Co., Warren Pa.

Don, I've noticed various numbers on the Underwriters' tag. Can you explain the significance of these numbers?
Denis Rouleau

For those of you registering engines, please include the Underwriters tag number if the engine has one. Thanks Don
 

Don Worley

Subscriber
Last Subscription Date
07/10/2019
Re: Jacobson Machine Mfg. Co., Warren Pa.

I will be posting several photos of
Jacobson engines. The first is my 2 HP on original factory cart.
 

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Don Worley

Subscriber
Last Subscription Date
07/10/2019
Re: Jacobson Machine Mfg. Co., Warren Pa.

Original factory advertising about 1906
1st is heavy governor weight engine for close rpm
2nd is a large cart mounted engine
3rd and 4th are of the factory at the end of WWI 1917
 

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Denis Rouleau

Subscriber
Age
70
Last Subscription Date
07/10/2019
Re: Jacobson Machine Mfg. Co., Warren Pa.

I wonder if the 5hp vertical Ruger engine referenced onto the Jacobson Machine Mfg. "Proposal" is still around.
Denis Rouleau


 

Don Worley

Subscriber
Last Subscription Date
07/10/2019
Re: Jacobson Machine Mfg. Co., Warren Pa.

I will send serial numbers of 16 of my engines and pictures of some of them to the registry email later.
I am just trying to get used to using the site and sending stuff. Don

---------- Post added at 10:39 AM ---------- Previous post was at 10:35 AM ----------

I have not heard of the "Ruger". I assume that it would be the same as the Wards "Invicible" which there are a couple 2 HP left. Don

---------- Post added at 10:45 AM ---------- Previous post was at 10:39 AM ----------

As with the engine tag the Underwriters tags were sequential. Only the engines with the Underwriters gas tank got the tag. If the engine has only the Underwriters tag I could possibly date the engine if enough Underwriters numbers could be found. Don
 

Don Worley

Subscriber
Last Subscription Date
07/10/2019
Re: Jacobson Machine Mfg. Co., Warren Pa.

Last post for today. Got stuff to do.
Engine seen at Kinzers last two years.
 

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Don Worley

Subscriber
Last Subscription Date
07/10/2019
Re: Jacobson Machine Mfg. Co., Warren Pa.

I have a factory sheet listing the information on the Invincible engine.
 

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