Need some help IDing these tools...

[jreb10]

I recently picked up a couple of small boxes described as "machinist tools" from a garage sale. I was able to figure out most of them, but these have me stumped as I am not a machinist. Any help is appreciated.




Item 1 closeup of tip:



Item 2 has a shallow square female end in the base



Item 3 the T wrench has a hex end.



Item 4 is some type of expander. Here it is disassembled.




Oh, and here is another one. I think it may be some kind of scale as it is exactly 6 inches long.

 

[454ragtop]

Can't help you on #1, #2appears to be for driving taps or reamers with a bit brace, have a similar tool for driving dies, #3 may be a wrench for a lathe chuck, some had male hex screws rather than the more common female square, and #4 appears to be a shop made expanding mandrel, most likely used to mount something in the lathe referencing off its center hole. Can't help on the last item.
Jim

 

[woody 73]

I am a little stumped on the one drill bit this is what I found so far: (antique auger bit).

http://www.ebay.com/itm/antique-auger-bit-/301995436948?hash=item465054ab94:g:nPUAAOSwv-NWVkuk

 

[woody 73]

454ragtop how does the bit hold the tap ? I could see it working (key word if it had a set screw to hold the taps in place) but I don't see any set screws. Still in the dark on that bit???

 

[454ragtop]

454ragtop how does the bit hold the tap ? I could see it working (key word if it had a set screw to hold the taps in place) but I don't see any set screws. Still in the dark on that bit???

You're thinking about it in comparison to a common hand held tap wrench, not something driven by a bit brace. I couldn't imagine driving a die with one either, but there it is, in a huge vintage tap and die set I have. But again, that's just my best guess, from looking at it and knowing of my die driver, but perhaps that's not even what it was made for.
Jim

 

[T_Curlee]

Just a guess.

Since the brace is usually used for wood working, as are lag bolts, I think that #2 is used to drive square headed lag bolts.