Though these are also used in high vacuum physics, or something
very similar to them is.
This site seems to cover the Tri-Clover line, and the gaskets
(seen part way down) are not the same as the high vacuum fittings which
I was considering.
2419 This looks like a Check Protector embosser.
Although the pattern looks a bit coarse, this looks like it was used to
emboss a pattern over the amount of a check to prevent alteration.
About halfway down the page.
On 12/8/2011 4:03 AM, Rob H. wrote:
This answer is correct. As I also mention on the site, I'll be posting on
Wednesday next week. Five of the six in this set were answered correctly,
the band saw vise was a difficult one:
I don't have a photo of the other side, someone sent me a hard copy print
through the mail which I scanned to get a digital image, text on it reads E
C Atkins & Co Indianapolis, pat. Apr 20, 1889. That date is a Saturday,
since most patents were issued on a Tuesday, the date might be incorrect. I
did some patent searching but couldn't find it.
I didn't succeed either, but I did find a few things.
1. EC Atkins is Elias C Atkins, and he founded a saw manufacturing
company in Indianapolis, with lots of patents. For instance, 342,416
2. His employee George S Black invented a Brazing Machine (pat 353,245,
issued Nov. 23, 1886) for the making of band saw blades.
After seeing your patent for a brazing machine I did a search on that term
and found one that looks just like the photo on my site, maybe the inventor
sold this patent to Atkins:
The date on the vise was Apr. 20, 1889 but the patent says Apr. 22, 1890. I
would think the ends of the bandsaw would overlap when brazed, not sure why
they're shown with a gap between them on the patent. Looks like DoN made a
good guess on the arch being used to hold the bandsaw while filing.
It would be an artist's impression, and it may have been clearer with
the gap. In practice, the ends would be ground to form a scarf joint,
as silver brazing isn't quite strong enough for a plain butt joint to
I really think that it is for keeping the amount and signature
from being modified, not for keeping the check from being submitted a
In part, because I was focusing on the arch, not the gap and
clamps along the bottom where the welding or brazing would be done. I
don't see the tongs which you mention in the posted answer.
I *can* see the arch being used to hold the freshly brazed blade
in position for filing off any excess brazing material, so it will feed
smoothly though the bandsaw's blade guides.
I see that you found the patent and the drawings there help
clarify its use greatly.
Today, if I were using it for the intended purpose, I would
probably use a set of resistance soldering/welding tongs instead of
pre-heated ones (which would require a nearby forge fired up. :-)
2419: notary embosser?
2420: Eye Washer
2422: Wire making jigs?
2423: Hay mover (Or a device not yet used in a movie or CSI show to kill
2424: vintage ballot box?
On 12/08/2011 04:03 AM, Rob H. wrote:
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