1903A1 Action Wrench and Vise Jaw Special Drawings

[usabaker]

I'm having a drawing set made of the RIA 1903A1 Action Wrench and Vise Jaw Special Drawings but I have been having problems finding a readable set. The ones in Brophy's book are just as bad and too small to read. Does anyone have a readable set or know what the dimensions are in the yellow clouds in this redline? I mean really know not 'guess' know, because I'm going to have the tools made from these drawings.

Attachment 93284
Thanks!
Bill

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[rcathey]

Bill,

Let me give it a look when I get to the office here in an hour or so. I’ll work you up a CAD file. Any particular format your machinist needs?
I bet the obscured dimensions will fall into place simply through scaling.

This is all purely selfish of course. Now I’ll have a set of drawings too

[rcathey]

Bill,

Couple thoughts so far.

The plates that take the hardwood inserts to hold the barrel indicate a groove of 1.469" wide to hold a 1.490" wide insert. They call it a "press fit" but, 1 - that ain't a press fit and, 2 - I don't see why it would need one. I'd just make that groove match your inserts (or vice versa).

Looks like you've covered a dimension with your yellow cloud on the hardwood insert. The big end looks to be .955" diameter and I THINK the small end says .825" but it's covered.
Also, on that subject, it appears to me that they've drawn the two ends non-concentric. I can't imagine why they'd go that route but the center points are offset by .0625". Weird. Why not concentric?

Comments so far?

[usabaker]

Looks like you've covered a dimension with your yellow cloud on the hardwood insert. The big end looks to be .955" diameter and I THINK the small end says .825" but it's covered.

That picture was one I was trying to work-up with a friend but we were lost on a few of the dimensions. I got the original drawings from another fantastic user on here in the group. I don't know if he's ok with me using his name so I won't publish it. Anyhow, here are the JPG. without the edits, we put in. Might clear things up.

Attachment 93296Attachment 93297

[rcathey]

Looks like I guessed wrong on that dimension for the wooden insert.
And now I see what it's saying. It's saying that the centerpoint for BOTH circle is 1/16" above the surface of the wood. That makes much more sense. I've attached an updated drawing.

I still don't get the interference fit between the wooden insert and the clamping plates. A 1.490" wide block isn't gonna fit into a 1.469" wide groove!

And again, I can save these in any format you need. Just let me know and shoot me your email address. I'll send them over.

Attachment 93315

[usabaker]

I still don't get the interference fit between the wooden insert and the clamping plates. A 1.490" wide block isn't gonna fit into a 1.469" wide groove!

Home from work and time to read your post. I looked at the drawings in Brophey's book and it has the same measurements. says press fit but, that's one heck of a press fit. Even with the - .010 it's still a .011" difference. Guess I'll find out when I get it made and use it.

Thanks, for the help!

[rcathey]

It's good to have connections!
The water jet shop I use through work hooked me up. He did a great job. Appears to be very little draft from one side to the next (as would be typical of sloppy or hastily done water jetting).

I had him make it from whatever stock he had on hand so it's aluminum. I think it'll work fine though. If my "Auction Gambling" 1903 ever comes in, we'll find out.

Attachment 93472
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[rcathey]

So I went for it based on my best engineering guesses.

I see no reason for the wooden inserts to fit so tightly into the metal clamp plates so I made them the same width.

I also don't see why the ends of the wooden insert wouldn't be concentric so I made them concentric.

I did mostly guess on the small end diameter of the wooden insert but it looks to scale so I think that's it.

I left the handle off of the action wrench because it would just crowd the drawing.

I inferred nothing else and believe everything else to be true to the dimensions listed.
I dimensioned my drawings in the manner they did even though the style is a bit outdated (imagine). Hopefully this will allow you to quickly and easily compare.

Let me know if you'd like any changes and what format I should send these files to you.

And thanks for sharing!!

Attachment 93292
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Attachment 93294

[usabaker]

Hopefully this will allow you to quickly and easily compare.

Let me know if you'd like any changes and what format I should send these files to you.

And thanks for sharing!!

Wow! that looks great! I hadn't taken it to the machinest yet, because I didn't have a clear set of drawings. I'll PM you. Unexpected surprize, thank you!

[Sunray]

If it's going to cost more than $125 to have one made, you'd be better off buying one from Brownell's. And Al is too soft.