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Handle head help


Eck

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I have a rock Island vice think it is a 503 and the handle head is not secured to the lead screw. How was this attached as a thread on screw end. pinned or maybe welded. There are several angle grind marks on the lead screw where it attaches to the handle head.

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I just acquired a rock island 574. I am assuming you mean the knobs on the ends of the handle. The ones on my vise are welded. I do not know if that is how they came or if someone did it later on though. I know i have welded the screw on knobs onto a couple vises in my time. Real pain when the come off while working on something. 

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Thank you what I was talking about was when the handle was turned the lead screw thru the vice would not turn just the handle. I looked and could not see a pin thru the handle hub / head to connect it to this screw. I decided to take a rubber hammer and drive against the handle and separate the head /hub from the lead main screw . It came off with no broken pin I could see and maybe some fine damaged threads. Now how to re connect these parts. Thinking about cutting a recess in the head  of handle and weld it to the screw. Then re face this area for smooth operation as a brass washer rides on this area. I think this would be stronger than a pin installed thru both and when put together will look original. Thank you for your help as this is my first vice repair.

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Hi, Eck, and welcome to IFI!

I can think of a bunch of possibilities off the top of my head, but it really would help if you could give us a few pictures showing the vise and its parts. Thanks.

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here is my problem  In the first post the handle head was attached to the lead screw. A little tapping with a rubber hammer got the handle off. When I started this project the handle head would not move the vice just spun free. So now how to re attach and repair. Since I see no pin or threads in the handle head I think I should cut a recess in the head where the screw attaches and  weld together then surface cut the weld smooth to work correctly. By the way the cuts in the screw where it meets the handle head were revealed when I took apart. Someone did a number on that end some time in the past. Thanks for all opinions.

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Do not see any brass in the hub and not sure  how it was connected probably a fine thread but unsure about the cuts. This was an old salvaged military vice at one time so could have broken and a repair was tried. If I pin the shaft to the hub the repair could be seen but a quality weld in a recess in the hand;e hub will give it a lot more area to fuse and a quick machine facing will never be seen unless taken apart.

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I can see what looks like machine marks . Tomorrow I will was area out with solvent to see if any other clues can be found.The face of the handle hub has a brass washer to rub against the vice jaw.

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Good thought will inspect the washer and head in the morning but the washer was loose between the head and jaw. still would not secure the head to handle hub.

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There’s a little round divot on the shank, visible in the last photo (in the duller section to the left of the shinier section). Is that inside the head when the shank is in place? If so, I’d wonder if there might be a setscrew hiding under the paint. 

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and why the tapered per say grind marks on the shaft . What could be their purpose ?  They were uncovered when I took the handle hub off. Maybe some tapered wedges to secure the handle at one time .

 

I have been scraping paint fron that area and so far no setscrew. Want to wire brush the paint off but have to get a respirator as not sure if paint contains lead. The vice was made around 1951 I think. will clean better and report back   thanks for good thoughts so far .

 

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I cleaned both areas with solvent. No pin thru the shaft or handle hub could be found. I took a file and went inside the hub and all I could see was bright steel. The brass washer between the hub and vice jaw had a slight rough edge on the inside edge which at one time could have been a shoulder  . I can see some small what looks like a weld pattern on the inside edge of the hub. My thoughts on brazing is the thick parts may effect the heat treatment as this area will have to get hot to melt the rod.  On the other hand a recess and stick weld may not heat up the shaft as much. as the weld could be completed in sections and cooled before re starting.

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