madannie77 Posted November 9, 2018 Share Posted November 9, 2018 Some products made in Sheffield and advertised in the above mentioned publication. Apologies for the wonky scans - I had to use a hand held scanner and my hands are not the steadiest anymore: "Dunelt" Hollow Steel Bars from Dunford & Elliott "Celfor" Soft Centred Steel from Sanderson Brothers & Newbould Precision Tools from Moore & Wright Lots of things from John Holding & Co 1 Link to comment Share on other sites More sharing options...
madannie77 Posted November 9, 2018 Author Share Posted November 9, 2018 Some more from the same book Eclipse Hack Saw Blades from James Neill Interchangeable Steel Type from Edward Pryor & Son Springs and Spring Washers from John Tonks & Co 1 Link to comment Share on other sites More sharing options...
Old rider Posted November 11, 2018 Share Posted November 11, 2018 I was an apprentice at Sanderson Bros & Newbould 1959 to 1965. I am sure they didn't produce Celfor soft centre steel at that time. In later life I worked setting up machines used for surface hardening, I am glad nobody found out about this steel as I would not have got to the countries I got to. Malaysia, South Korea, Thailand, Italy Sweden to name a few. Link to comment Share on other sites More sharing options...
lysander Posted November 12, 2018 Share Posted November 12, 2018 Thanks Madannie...very interesting and a reminder of what this city of ours once was! "Celfor", like so many other brand names from Sheffield's steel companies was a case hardening steel used for shells, gears and any number of other applications. During WW2 the Germans became the world leaders in the manufacture of these steels when the shortage of alloys made them reliant on more readily available materials and inventing new hardening techniques . Most of these Sheffield brand names faded into insignificance ( tool and high speed steels excepted) when BS970 En series specifications became widely accepted by the steel and engineering industries . Link to comment Share on other sites More sharing options...
Old rider Posted November 12, 2018 Share Posted November 12, 2018 The hollow steel bars of round and hexagonal shape are used in the rock drilling and mining tool industry. Rock drills, sometimes 12 feet long have the hole in the so that coolant can be passed through them. Padley & Venables in Dronfield use hexagonal hollow bar to make their rock drills. The end is forged with a slot that has a tungsten carbide tip brazed into it then 2 small holes each side of the carbide tip allow the coolant out, otherwise the tip would get so hot the carbide tip would un-braze. P&V's owners at the time bought Bedford steels on Effingham road to ensure continuity of supply after the only other rolling mill in Sheffield rolling hollow bar closed down. Link to comment Share on other sites More sharing options...
lysander Posted November 12, 2018 Share Posted November 12, 2018 That company would be the "Sheffield Hollow Drill Steel Co.Ltd whose premises were , if memory serves m correct,on Locoford Lane (now the exit from IKEA} Link to comment Share on other sites More sharing options...
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