I have another oddity on my bench.
There is no glazed card. The cordite is in a bag with a string tied top.
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I have another oddity on my bench.
There is no glazed card. The cordite is in a bag with a string tied top.
Blown up a bit it looks like there are three crimps, if the points indicated by the blue arrows are indeed each the start/end of a crimp.Quote:
Originally Posted by CINDERS
The profile as indicated by the yellow arrow is noticeably deeper and more "V" shaped that the other photo where it appears the position of the case in the photo is such that we are looking at the area between two crimps?
Badly worn dies or improperly adjusted machine?
I reckon Surpmil your right, perhaps the stabs wore worn and it colletid the neck instead of the indent stabs being performed, it stands to reason with the millions of rounds being churned out that these anomalies would occur.
How many got through I wonder as Q/A inspection may have ditched them as not being as designed so may alter the way the round performed (It would not really) but someone's life depended on how it did work so it they would have been binned it.
Bindi2 be good to see a pic of that one!
Quote:
Originally Posted by CINDERS
In the UK every single round was inspected by MK1 eyeball and individually weighed, but I don't know it they'd have picked up your 'ring'.
6-8 'lines' per shed, how many sheds per manufacturer ?
Notice the overhead belt drive for all the machinery.Quote:
Originally Posted by Alan de Enfield
That's how the industrial revolution was powered.
Quote:
Originally Posted by Lee Enfield
We have a small engineering company in our local village - I was hunting around the back of some of the buildings and came across one of the original buildings from the 1600's.
I was talking with the owner who was explaining that the site and buildings was the original 300+ year old blacksmiths forge.
There was a big steel shaft going thu the roof one one building, out and thru the next building.
In one building was the original forge and a 'power hammer' that was driven by a belt driven from a pully-wheel on this shaft.
It is interesting to see 100s of years old technology - not in use but still installed and which could be made to work.
A friend of mine (who recently passed at 89) spoke about setting up belts for machinery - he showed me old catalogues (I'm sure I ended up with some) and IIRC old copies of Machinery's Handbook showed the proper setup of belt drives.Quote:
Originally Posted by Alan de Enfield
https://www.smokstak.com/forum/threa...e-shop.215434/
Industrial Antiquity - Line Shaft Pulleys and Belting
In the late 60's on school holidays, I used to roustabout for my Uncle who was a shearer the o/head gear was run by belts driven from an electric motor in turn driven by my Uncles single cyl Lister engine he towed in a trailer behind his Landy.
There were also 2 vertical grinding discs driven by belt from the lister engine in the trailer one coarse one fine the coarse side for your combs and the fine one for the cutters.
Sounds like your uncle had a Lister "Start-O-Matic" generator Cinders, or something like it. Lister clones are made in India these days, but AFAIK they've never made the full rig with generator-starter and panel attached.
I just dug out my copy of Machinery’s Handbook 21st edition, revised, 1981 print.Quote:
Originally Posted by Lee Enfield
There is an extensive section on pulleys starting with flat belt drive and applications and design of leather belts through to all the V belt types and uses. Pulley manufacture, uses and ratings for wood, cast and machined pulleys.
It doesn’t go into design for long shaft power transmission systems.