Taylor hobson etcher

Hi everyone

I have just acquired this weekend a taylor hobson "javelin" etcher and a normal etcher but no transformer or instructions other than these I've found on the internet http://www.uphill.org.uk/pages/engineering/machinery/taylor/manual/th_03.htm

can any of you guys enlighten me as to the voltages, needed

or even a transformer for sale???

or maybe a manual? in the link it states to get in touch with them for more information so I'm assume that there is some sort of paperwork available at one time

regards

paul

Paul,

PM sent

MichaelG.

3640 sept 1980

News from the Trade
A couple of news items of the Trade: we hear that
Mitutoyo (UK) Ltd has opened a new suite of repair
and calibration rooms at its Andover Headquarters
(tel. 02&-53123) for its micromerer and oprical
projector products. A new company, Newington-Hull
Ltd has been formed to take over production and
marketing of machine tools hitherto supplied under
the Taylor-Hobson name. Taylor-Hobson will be
remembered for their small pantograph engraving
machines and optical products,

Try

taylor hobson javelin pdf

in googlie

Theres a bit in here

**LINK**

Paul,

Have a look at Page 81 of this

MichaelG.

Perhaps MichaelG's private post solved your problems but for the rest of the world I went delving into my cupboards. I'm quite pleased I remembered which cupboard it was in and found a motor I'd forgotten about at the same time.

The Transformer is a big round cast iron box but just contains an ordinary transformer, AC no rectifier as it actually has to be AC not DC. There is a 6 position switch on top.
I found a nice little note to myself in the Javelin box.

1/ 2.4v
2/ 3.2v
3/ 4.0v
4/ 5-0v
5/ 6.3v
6/ 8.0v
All AC. 4Amp then a note I don't understand "5v AC on coil"
I expect these are all open circuit.votages and the last note might be the 8v on load.

Charging up camera batteries for photos later.

Interesting, Bazyle

Mine is a small rectangular box, with a set of paired sockets for the various voltages.

... Presumably a "Poduct Improvement"

Likewise, I will photograph it when I can dig it out.

MichaelG.

.

P.S. I wasn't being secretive !!

See my Taylor Hobson Album for more pictures of the later type transformer and etching head, looks like 10v and believe it was DC, the current to the etcher was switched on/off by the action of a solenoid acting on a set of contacts taking power to the etching needle, (current passing through the coil breaks contacts) this was all built into the head. The etching depth was adjusted by using different voltages on the transformer output and is great for all metals, especially HSS and toolsteel.

I used it on a TH model K machine, probably the RollsRoyce manual operated engraver.

Emgee

The ME guys got that name change wrong bigtime

It's Newing-Hall ltd not Newington-Hull ltd lol

Engaged brain. The coil gets a constant 5v and the variable voltage is to the javelin. I only have one size No14. Are they still available from NH?
The javelin is a copper rod about 1/16 dia x 5/8 with a tungsten spike in the working end. Top end is widened out to enable number to be engraved on. Spikes available in variable widths. Held into hoolder with coplicated shape of spring. All makable of course as long as you have one as a pattern.

Glad I got this out as it has become a bit rusty on the side next to the wooden box.

There is no earth return connection on the old transformer so I think the path was assumed to go through the machine earth and mains earth.

For info. ... Here is the 1946 [Canadian] Patent

[other versions may be available]

MichaelG.

I have had this in my 'odd bits of material' box for quite a few years. It looks to be Nickel Silver about 0.4mm thick and about 6" long. I have no idea what its used for but at least I know what its used with!

Ian P

As promised ...

Here are photos of mine, which is branded "Rank Optics"

[ One of the later owners of "Taylor Hobson" ]

It has Serial No. RWS0002 on an adhesive label

but I don't know if that's the Manufacturer's or the Owner's.

Note that the thin red wire takes 5.5 Volts to the 3-pin outlet.

MichaelG.

Edited By Michael Gilligan on 08/04/2014 20:46:21

One of those would be a good boot-sale find. That transformer would make the basis of a decent high-amp bench supply, especially driving something like a 12V milling attachment..

Neil

Is the part I sent the picture of earlier today any use to anybody? I will pop it in the post if anyone can make use of it.

Ian P

Micheal G

pm sent

paul

Wow guys

many thanks for info & links

regards

paul

Here is another little gem from the global library

1944 Advert.

MichaelG.

Ian, I would be interested if you want to part with your blade bit. I assume it is the adjustment tool mentioned in one of the earlier links.

MG's link gives a nice photo of the working end. I have added pictures of a javelin in mount and round transformer to my album but can't get picture links to album to work any more.

Very stylish Transformer, Bazyle,

I've never seen hat one before ... thanks for the pics

I was tickled to see the numbers, etc. cast in the top plate

... somewhat inappropriate for the Engraving Machine manufacturer.

MichaelG.