thanks very much for that kirk. i must start remembering to search our own
archives too !

an interesting tool indeed. i still wonder why they used the helical wire
attached to the shaft, rather using the grooved shaft we are more familiar with.
i am sure the same 1.5 turns could have been achieved. maybe the pressure
exerted by the spring on the tool tip was not sufficient to wear the 'wire' away
over time, so they deemed the KISS approach is all that was needed.

Cheers,
Mal

Sent using Mail on iPad 2

> On 21 Dec 2014, at 00:15, Kirk Eppler  wrote:
> 
> 
>> On Fri, Dec 19, 2014 at 5:12 PM, Malcolm Thomas  wrote:
>> i believe they made or distributed these at some time...
>> 
>> image is not mine http://thumbs3.ebaystatic.com/d/l225/m/mi5uj9tQKgP
xfbtl4UvKlsQ.jpg">http://thumbs3.ebaystatic.com/d/l225/m/mi5uj9tQKgPxfbtl4UvKlsQ
.jpg
> 
> Couple more bits of info:
> 
> http://swingleydev.com/archive/get.php?message_id=167519&submit_threa
d=1">http://swingleydev.com/archive/get.php?message_id=167519&submit_thread=1
> 
> http://www.worthpoint.com/worthopedia/vintage-push-drill-screwdriver-
vesco-100704741">http://www.worthpoint.com/worthopedia/vintage-push-drill-
screwdriver-vesco-100704741
> 
> 
> -- 
> Kirk Eppler in HMB, where the older daughter got the tree mostly decorated
last night.
>