This weeks odd item!

[Martin King 2Participant @martinking2]

Hi All,

Here is a strange item that is obviously incomplete, Google Lens does not help.

My guess is that it is for winding yarn or some such? Maybe the patent number might help but I do not have the means for that. Nickel plated originally.

Any help welcomed as usual!

Cheers, Martin

[GreensandsParticipant @greensands]

Bottom half of a domestic coffee grinder?

[bernard towersParticipant @bernardtowers37738]

bottom half of a apple peeler?

[Michael GilliganParticipant @michaelgilligan61133]

Going by the Patent No.

https://worldwide.espacenet.com/patent/search?q=pn%3DGB190324189A

… a ‘developed’ version of Mr Burton’s Razor Sharpening Machine !

MichaelG.

[old martParticipant @oldmart]

It’s for a potter to throw an amphora.

[MichaelRParticipant @michaelr]

Bobbin Winder ?  OR Vintage Jewellers Turntable Bench as picture below

 

[MichaelRParticipant @michaelr]

[Bill PhinnParticipant @billphinn90025]

I fail to see how it can be anything other than an incomplete specimen of what’s in Michael’s link.

[Martin King 2Participant @martinking2]

Thanks to all; looks like Michael G does it again! I may have a go at making the turntable part if I can,,,

Cheers, Martin

[Nigel Graham 2Participant @nigelgraham2]

Ooh, in which case do please elucidate with photos of the finished tool and its use!

The patent specification, written in that gorgeous mix of legalese and proper technical language, shows a tool whose principle is that of the edge-tool sharpening machines in wood-working.

One of Holtzappfel’s books shows an alternative with the honing surface stationery: I think called a Gnomiometer. No, not for ensuring horticultural figurines’ ISO9001 compliance, but a tool-holder on two orthogonal protractor frames so the ground edge is held at the requisite compound angle for lapping on an abrasive plate.

[Martin King 2Participant @martinking2]

Hi All, Just ran up a 3d printed platen for this item which has turned out OK I think:

Having looked at MichaelG’s patent drawing it would appear that there is an arm part which holds the straight razor at the correct angle for sharpening. However on my item and also the photo posted by MichaelR there is no sign of a threaded hole in the long arm to take this part?

I will make the securing nut for the platen next.

Cheers, Martin

[Martin King 2]

On Martin King 2 Said:

[…]

Having looked at MichaelG’s patent drawing it would appear that there is an arm part which holds the straight razor at the correct angle for sharpening. […]

that would be the feature which makes it comparable with the aforementioned Goniometer.

MichaelG.

.

[Martin King 2Participant @martinking2]

Hi Michael,

I am perhaps being a bit dim here but surely the long arm of the main casting should show signs of somewhere to fit the arm that holds the razor across the platen? There is no such “hole” on either mine or the other one shown?

Cheers, Martin

[Michael GilliganParticipant @michaelgilligan61133]

Understood, Martin … I remain somewhat bewildered by what development may have occurred twixt patent and product.

MichaeG.

.

Edit: __ There appears to be some fretting in this area … I wonder if the angular adjustment clamped on to that boss ?

.

[Michael GilliganParticipant @michaelgilligan61133]

Google’s AI contradicts me quite firmly:

.

The item pictured is not a razor sharpener; it is a
vintage, hand-cranked cartridge reloading tool, also known as a roll turnover tool, for shotgun shells.
[…]
The marking “PATENT N* 24189” refers to a historical patent number for this specific design or a component of it.

.

MichaelG.

 

[john halfpennyParticipant @johnhalfpenny52803]

You have to remember that patent drawings, whilst often a good guide, are necessarily those of an early model, or even a prototype. The production version will frequently have practical changes and improvements which fall within the scope of the patent, but are not illustrated by updated drawings because there is no facility to add them ( nor any need to do so).

[BazyleParticipant @bazyle]

A razor very quickly develops a curved edge during manual sharpening so the fixed holder was probably found not to work very well.

[Martin King 2Participant @martinking2]

MichaelG, Certainly NOT a cartridge tool;we have had many of those of almost every type over the years. They used to do well but now are very hard to move unless rare.

I have enlarged the bit of your drawing, not sure what part n looks like?

[Michael GilliganParticipant @michaelgilligan61133]

Parts n and o …

.

.

MichaelG.

 

[Andy StopfordParticipant @andystopford50521]

A Goniometer is a device for measuring angles – I have some memory of using one in ‘A’ level physics, possibly for measuring diffraction of light.

I think it’s a general term, rather than describing a particular design of gadget.

[peak4Participant @peak4]

Rather than a razor sharpener, spool winder, or cotton bobbin winder, I do wonder if it may be a movie film re-winder.
I would expect a wire coil winder to have a turn counter, to set the inductance value.
Struggling to find a similar design on Espace, but along these lines.

https://worldwide.espacenet.com/publicationDetails/originalDocument?CC=GB&NR=320058A&KC=A&FT=D&ND=3&date=19291002&DB=&locale=en_EP

This type of thing, but obviously older.

I think some used to be horizontal

Bill

[Andy Stopford]

On Andy Stopford Said:

A Goniometer is a device for measuring angles – I have some memory of using one in ‘A’ level physics, possibly for measuring diffraction of light.

I think it’s a general term, rather than describing a particular design of gadget.

Very much so

MichaelG.

[not done it yetParticipant @notdoneityet]

It won’t be a cotton bobbin winder – it not geared highly enough.

[Bazyle]

On Bazyle Said:

A razor very quickly develops a curved edge during manual sharpening so the fixed holder was probably found not to work very well.

I agree.   My experience with cut-throat razors comes from microscopy where they are used to slice very thin sections.   Posh folk own microtomes, a machine that holds the specimen and drives the blade.  Poor relations use a cut-throat and it has to be VERY sharp.

Best to not let  a cut-throat get blunt enough to need a regrind, the trick is regular stropping on a leather belt, with the occasional light touch up grind.  Stropping on a belt isn’t difficult, and I don’t see much advantage in a spinning disc.

Two forms of razor:

• Cheaper straight-ground razors.   The shape is good for slicing specimens rather than shaving,  don’t know why.
• In the past only barbers and rich people bought expensive hollow ground razors.  They were much imitated – cheap razors made of inferior steel and crudely hollow-ground, to fool innocents.  Birmingham was world famous for cheap nasty tat.   I’m not sure a hollow ground razor would strop well on a wheel, might be a good way of spoiling a high-end razor.

We’ve mostly forgotten cut-throat razors were once very expensive and highly desirable.  In Victorian times “buy cheap buy twice” was mostly true, so there was a lot of mystique and dodgy goings on.  Poor quality blades sold in gilded boxes and sharpening aids that didn’t work that fleeced the unwary hoping to save a few bob.  Customers spent good money on gizmos that would magically turn a poor razor into a good one.  Or at least keep it a little sharper!

This tool may be a gimmick.   Anyone remember when safety razors were sharpened by leaving them under pyramids:

Modern steel and manufacturing methods put the kybosh on razor mystique.   A scientifically formulated stainless steel is rolled into a thin strip, which is punched, hardened, and ground and honed to a super-sharp edge by a machine. Hardly any metal in it, so dirt cheap – no need to resharpen them, disposable.

Cut-throats still have a niche though.  Anyone use one?  And if so how do you keep it sharp?

Dave

 

 

 

[howardbParticipant @howardb]

Ever heard of Rolls Razor?

My Father had one of these gadgets, a self sharpening hollow ground razor blade, having said that, it’s possible that he purchased it just post WW2 when razor blades were virtually unobtainable.

https://en.wikipedia.org/wiki/Rolls_Razor

 

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