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Gorton I 22 Mastermill Serial #

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63steward

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#1
Hello All,
I have three questions I hope someone can help with;
I am new to the forum and to machining in general, so please bear with me. I just purchased a used Gorton, seller states it's an I 22 Mastermill. I am in the process of getting this monster picked up and brought home, I only have photos, which could be better. In the meantime; 1. I was hoping to run down the O.E.M specs, year built, and model# of machine via serial #, no joy on internet.
It has an original nameplate, Serial # 41183, 3 ph, 3 Hp, 60 Hz. It looks like it is a manually controlled spindle speed, 0- 5600 rpm, per seller. Comes w/ six 9B Hardinge collets. It's equipped w/ an Accurite III X and Y axis DRO and a supplemental motor brake ( "Short Stop"). 2. Can this machine be powered with a VFD? I only have 220 single phase, (sub panel coming soon) in my garage. If so, I will likely get a Lenze SM Vector.
3. Are Brown & Sharpe #9 the same spindle taper as the Hardinge 9B?I am wondering if finding a tool holder/adapter is going to be difficult.
I know that's a lot of info, so any help would be most welcome.

Thank You
 

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benmychree

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#3
According to my Machine Tool Serial Number Book, your mill was made in 1960; 1960 started with 41509, 1961 starts with 47059, it was first built in 1955.
 

63steward

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63steward

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According to my Machine Tool Serial Number Book, your mill was made in 1960; 1960 started with 41509, 1961 starts with 47059, it was first built in 1955.
Thank You Sir, that's a lot more info that I had before. I'm told they're a solid machine.
 

markba633csi

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#6
The Gorton fisherman owns one of these. He lubes it with cod liver oil. :p
 

DiscoDan

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#9
At one point I had my eye on an 8 1/2D for $900 but I decided a small bench mill fits my very limited space better.
 

63steward

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HI Marc,
Looks like he should have used some kind of oil, 020508-gortons-fisherman.jpg lol. Little rusty for a California machine. I'll have to clean it up.
 

63steward

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Still getting used to the format here, bear with me. That's a nice looking set up Joe. I am much relieved to hear that a VFD will work, wasn't sure how the brake would respond and later perhaps a power feed. I'd have been in trouble otherwise. Do you like the Teco?
Dan, space is always at a premium around here too, I have two hobbies and they both take a ton of space, one side of a three car garage is for woodworking, the other steel, welding, forge, etc. May the two never meet. Getting into some black/bladesmithing lately.
 

Liljoebrshooter

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#13
I cussed the Teco at first when I was trying to get it up and running. After actually reading the instructions I figured out I had a couple settings wrong. I haven't ran this thing much yet. I am still trying to finish the one shot oiler.
Mine has a factory power feed on it. I has a transformer to convert it to DC. I was worried about that, but it is 220v single phase to 70v DC.
I will try to answer any questions you have.

Here is a picture of the mill when I bought it.
20180202_171926.jpg
Joe Hynes
 

markba633csi

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Just to put a fine point on it- transformer + rectifier gives you dc
mark
 

Bob Korves

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#15
Those are good mills!
 

63steward

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Thanks for all the help guys. Another newbie question, sorry. Anybody ever have to get one of these under a standard garage door header? Seller says machine is 80" and lip of rolling overhead is 79". Could cheat a little by rolling it back, but still have to get my forklift under it. That's a little too close for comfort, hate to have to buy this dude a garage door. Does the head assembly pivot on these like a bridgeport? Or might I have to either take/motor head loose or sling it sideways, I'd REALLY rather not, never taken one apart. pretty decent at rigging though and have the tools. I figure there will be maybe 16"-18" headroom inside building. Going to go down the weekend of Nov 3rd/4th.
Any advice would be appreciated.
Chad
 

Liljoebrshooter

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#17
Yes the head rotates. There are 3 bolts on the head that need to be loosened up and the head can be rotated with the crank on the side of the ram.
It will only move about 90 degrees unless you remove the bottom bolt.
I will try to attach a picture.
Joe Hynes 20180127_114456.jpg
 

Liljoebrshooter

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The crank to rotate the head is just in front of the lifting hook in that pic. A crescent wrench will work.
Here is a picture of the gear that turns it. 20180602_213202.jpg 20180603_182451.jpg
 

63steward

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Yes the head rotates. There are 3 bolts on the head that need to be loosened up and the head can be rotated with the crank on the side of the ram.
It will only move about 90 degrees unless you remove the bottom bolt.
I will try to attach a picture.
Joe Hynes View attachment 278517
 

63steward

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Thank You Joe! that helps a lot. I was sweating that one a bit.
I appreciate your help.
 

63steward

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#21
So... I went to L.A and got my new old mill. It was BURIED in seller's garage and we had to detach garage door and remove stiffener to get it out. Had to use a drag chain, pucker factor= 9.75. Good news was it's in a lot better shape than the pics show, and has a power feed. Bad news.. my ground crew of one sucked, tag line not held tight when I picked it up with slings, bumped into forklift mast, not real hard but enough. Wondering if the ways got messed up. Thus, we snapped the right side table control feed (hand wheel) off. It appears to be like a 3/8" stud. Any idea if it's left or right hand thread? Thinking about trying an easy-out to remove the broken stud, but likely would get only one shot at it. Don't want to try it and make it worse. What do you guys think?

Another odd thing Joe, this is the part you might get a good laugh at a knucklehead- I followed your suggestion to remove bolts to rotate head. When I did so, it began to leak oil at about a 20 degree tilt, from behind the slide lever on head, left side of machine, so I stopped and replaced bolts. Does that mean it's simply overfull of oil or perhaps a bad seal? I assume the graduated ring between ram and head is there for a reason and one can operate the mill at an angle?

The seller had a pretty good manual, parts list etc. if anybody would like them uploaded let me know.

For anyone crazy enough to try this move yourself, the shortest forklift mast I could find is at standard door frame height, 82-5/8". Just too tall for std. door. One I had was 87". Also, these mills were equipped with an eyebolt for picking them up, at top/center of ram. In my case it had been replaced with a bolt to mount the arm of the accurite DRO, so I had to sling it under the ram. Weight is approx 2800 lbs. 3/4 ton diesel pick up handled it in the bed. Had all trailer could handle w/ the forklift on it. One heck of a ride home.
 
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