Help needed to ID these 3 items

I bought a partial estate last week and these were in a box of parts,any idea what they are???

#2 base diameter 1 1/8" note-the perspective is wrong and it actually measures 1 1/8" across diameter of the base

#3

#4

Boy we should get together. I have a lot of items, that I have no clue as to what they are.
Perhaps we should start a what is it? Lots of members could learn a lot from it.

The first 250 pages of this catalogue contain lots of thingamadoies and whatchamcallits.

J.H. Purdy & Co. 1899

I think the first item is a leg prosthesis for a stork.
Roger

I have seen drawings for making tool #1 in high school metal shop class. I suspect it is for separating some sort of thing from a tapered shaft. Number 2 looks like the base for my lawnmower blade balancing tool. It has a stepped spun aluminum cup, to fit different sized center shaft holes, that sits on top of the pin. After sharpening the blade, it is rested on the appropriate cup, and whichever side is heavier gets a little more grinding.

I'm going with clock tools the first on ,I have seen just forgot where ( I think some clock show in Ma. a few years ago )

Mr. Cusak's reply finally jogged my memory. It is calld a "crows foot" and is used to hold thiongs like the top part of a lantern pinion while a punch is used to drive the arbor down, thus freeing the individual runners.

If you were into small and really detailed scale model cars, it would probably make a nice ball joint separator, too.

The one on the right looks like a support for the balance cock so you can work on the hair spring.