Any idea here?? The knife has a pat number and the button says double gilt

[Zacman3669]

Hi if any one could give me more info here would be so so appreciated xx

 

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[Mackaydon]

I'll bite and ask an obvious question: What is the patent number?
Don.......

 

[Zacman3669]

Lol Don I did supply a photo but u think it says pro.pat 12512
I thought it was possibly ivory but a long shot... I tried go ogling pat number but no joy lolxxx

 

[digging440yrs]

I would say it's probably polyoxybenzylmethylenglycolanhydride--wow that wore me out--- otherwise known as bakelite. You can find ways to check if its ivory [ hot needle for 1]----good luck tom

 

[Zacman3669]

Thankyou I will be doing a hot needle later thanks again x x xbx

 

[Goldfinger450]

Celluloid possibly, it is famous for rusting up knives and straight razors, even NOS items still in the original packaging.

 

[Anduril]

My guess is the text reads something along the lines of "Provisional Patent - 1,251,XXX"
Which, if it's a US patent, would date it to either Dec 1917 or Jan 1918 (as the first patent of 1918 was # 1251458)

 

[Zacman3669]

My guess is the text reads something along the lines of "Provisional Patent - 1,251,XXX"
Which, if it's a US patent, would date it to either Dec 1917 or Jan 1918 (as the first patent of 1918 was # 1251458)

Wow thankyou Anduril I would love to see if this is that old.... and thankyou again just need to do a hot pin test to see what it is made of lol .... this was found In the UK not usa though...or is dates about the same?

 

[TheCannonballGuy]

Zacman3669 wrote:
> the button says double gilt [...] if any one could give me more info here would be so so appreciated.

Your brass 1-piece flatbutton with backmark saying "Double Gilt" in raised lettering usually dates from the 1790s into the 1830s. However, the fact that it has a "raised backside rim" (like a jar lid) dates it to a bit later, very-early 1800s into the 1830s.

 

[Mackaydon]

There is an English patent with that same number, but the object has nothing to do with a knife.
Don......

 

[Zacman3669]

Zacman3669 wrote:
> the button says double gilt [...] if any one could give me more info here would be so so appreciated.

Your brass 1-piece flatbutton with backmark saying "Double Gilt" in raised lettering usually dates from the 1790s into the 1830s. However, the fact that it has a "raised backside rim" (like a jar lid) dates it to a bit later, very-early 1800s into the 1830s.

Thankyou so much it's in great condition for its age xxx

 

[Zacman3669]

There is an English patent with that same number, but the object has nothing to do with a knife.
Don......

What does the patent refer too? I'd love to know how old this is and I'm positive it's a knife... but I could be wrong lol lol

 

[Mackaydon]

Z: Here you go.
Naphthylamine disulphonic acids +naphthol sulphonic acids (Bayer, English Patent 12512 (1904)
https://books.google.com/books?id=X...VAaAQ6AEINzAG#v=onepage&q=patent 12512&f=true
Don...