Guys,
Need some help on this one and I know this is the place to find it. Just acquired I believe one of the earliest of Parker's double swivel vises, Patent date is 1906, model is #439. I have only seen #474 with the late style screw and the swivel clamps that use the later style attached wrench. I have an original ad from 1910 showing my exact vise which uses bars to tighten the swivel clamps. Problem is mine was missing one of the bars. I was told by a machinist that Parker's used 1/2 bar stock material for the bars with end caps that screwed on. My bar is 7/16 material and it appears that the hole inside the upper clamp is actually larger than 7/16. If you look at the picture of the vise in the ad you can see that the upper clamp bar looks to be a larger diameter. I put a mic into both of the holes and indeed it appears they used a thicker diameter bar on top. Im looking for guys with swiveling Parker's to verify the thickness of their bar if possible or shed any light on this. Wish I had the patent number for this vise as Im sure the dimensions of all the components would be included. thanks for any assistance
Mark
Need some help on this one and I know this is the place to find it. Just acquired I believe one of the earliest of Parker's double swivel vises, Patent date is 1906, model is #439. I have only seen #474 with the late style screw and the swivel clamps that use the later style attached wrench. I have an original ad from 1910 showing my exact vise which uses bars to tighten the swivel clamps. Problem is mine was missing one of the bars. I was told by a machinist that Parker's used 1/2 bar stock material for the bars with end caps that screwed on. My bar is 7/16 material and it appears that the hole inside the upper clamp is actually larger than 7/16. If you look at the picture of the vise in the ad you can see that the upper clamp bar looks to be a larger diameter. I put a mic into both of the holes and indeed it appears they used a thicker diameter bar on top. Im looking for guys with swiveling Parker's to verify the thickness of their bar if possible or shed any light on this. Wish I had the patent number for this vise as Im sure the dimensions of all the components would be included. thanks for any assistance
Mark
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