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fv1609

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fv1609 last won the day on December 22 2017

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About fv1609

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  • Birthday 04/01/1914

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  1. fv1609

    RAF signal lamp bulb

    No doubt you have googled 6230-99-199-1239 & surprised to find there were no hits at all! The reason is that the item was incorrectly codified. NSC Group 62 covers Lighting Fixtures & Lamps, more specifically the NSC Class 30 covers Electric Portable & Hand Lighting Equipment. This sounds all perfectly reasonable but this Group is for lighting ie general illumination not signalling equipment. The correct allocation is Group 58 Communication, Detection & Coherent Radiation Equipment with it in Class 50 for Visible & Invisible Light Communication Equipment. Giving the correct NSN as 5850-99-199-1239 so you will get a few hits now. I suspect if the bulb was special to this lamp it might have been codified at the same time with a NSN fairly close to the parent equipment. But if, as is probable, the bulb was already an item of supply it would be codified somewhere but with the NSC 6230.
  2. fv1609

    RAF signal lamp bulb

    This came later. All NATO countries agreed to accept the NATO Standardization Agreement in 1956. But in the UK this was not implemented until the ratification of the agreement in STANAG 3151 in 1961. I can't speak for the RAF but in 1965 the Director of Ordnance Services instructed that all new items of supply would be NSN codified. It was decided that there would be retrospective codification of common user items & the plan extended the retrospective codification task to all domestically catalogued items in all three Services, with a target date of 1971. Incidentally I saw a lantern like yours at Malvern yesterday for £25 & it had no NSN. It had a red filter so I couldn't see the type of bulb, or indeed if there was one fitted. In the general melee I didn't think it was fair to the trader to start dismantling a thing that I had no intention of buying.
  3. fv1609

    RAF signal lamp bulb

    Know what you mean Ted, I have a 1955 edition of 16E & that is a very fat book. The only good thing about it is that it lists the vehicles to which the item was fitted, unlike VAOs that gives little away.
  4. fv1609

    RAF signal lamp bulb

    I have FAP 1086 for 1988 & 1992 that list none of those items, nor are they listed in the cross referencing lists into NSNs. So presumably obsolete or at least no longer demandable by 1988. In 5A there is no Lantern Electric, although there is a Lantern Electrical, which I think is rather different as the bulb it quotes is 6v with a MES fitting.
  5. fv1609

    RAF signal lamp bulb

    Kev yes that is a very high wattage, apart from it being unnecessarily powerful there would be too much delay in the filament warming up & cooling down & would blur the distinction between Morse Code characters. The Navy used high wattage signal lamps but the filaments remained on & the code sent by a series of parallel shutters that were keyed by the operator. If you posted a picture of the bulb socket it might trigger someone's recollections & also of the plug you are after. Depending when it went out of service I may have the signal lamp in some of my FAP 1086 collection, there is a chance that the bulb would have entered the RAF Stores Vocabulary at about the same time & the bulb you require would be something close to 5A/6230.
  6. A rare opportunity to acquire a collection of 32 Jane's books. Many are consecutive & give a very good time line as when certain bits of kit became available. The difficult to see what it is one is Jane's All the Worlds Aircraft 1962-63 which is a collectors item in itself. Available for collection from S.Wales or I could take to Malvern Militaria this Sunday 18th. Looking for £150 the lot OVVNO, so has to be a bargain for less than £5 a book! PM me if interested or if you want a few representative pages on a particular topic so you can see the sort of coverage.
  7. http://www.shorlandsite.com/ Will soon be closing down so download what you want whilst you can. Web hosting charges have risen dramatically which makes it no longer viable to run the site.
  8. fv1609

    WW2 checkerplate strip

    You said 1.5/8" although this is 1.5/16" it is Imperial, British & 1950s. I have a few lengths available.
  9. fv1609

    Bridge rating markings on vehicles

    I know that by 1909 it was the responsibility of a general staff officer at the approach to a bridge to give instructions to commanders of units about the suitability of the crossing. By 1911 the responsibility of giving the bridge a load classification passed to the engineers in the unit constructing the bridge. They were required to indicate at each end of the bridge the greatest permissible load but this was not yet numerical. By 1939 all bridges where classed according to the maximum weight of a vehicle in tons giving the following Classes 5, 9, 12, 18 or 24. Bridge classes applied not just to fixed bridges but to pontoon bridges as well. So if bridges were classed by 1939, presumably vehicles were marked up accordingly?
  10. fv1609

    Colour of 1955 HSAT Airborne Helmet

    Mark unfortunately, H1/8010-99-910-6646 has been obsolete for a while. What we need is a Vocabulary of Army Ordnance Stores Section H 1 (a) Paints, dopes & varnishes from the late '50s. I know there was one in 1957, but I only have later incarnations that do not list it. If a VAOS was found, it very likely would indicate the standard to which it was formulated, this would pre-date DefStans so would most likely be a CS (Chemical Specification) laid down by the Director of Chemical Inspection (CI). This was a branch of the War Office Inspection Organization under the control of the Assistant Master-General of the Ordnance (Inspection) (AMGO (I)). I have catalogues of Government publications from 1894-1984, although if I eventually found it, there would be little detail other than the title. The chance of unearthing the right CS is remote, not helped by the added confusion that CS Specifications were also issued by the Air Ministry that first appeared in 1936 and relate to Civil Specifications. I used to use 50 micron aluminium oxide for micro-sandblasting. So that was pretty fine & probably as small a particle as you could easily get. I suppose you could mix some of that in & if it wasn’t giving a noticeable texturing, move onto larger particles.
  11. fv1609

    Colour of 1955 HSAT Airborne Helmet

    I've just found my copy of Equipment Regulations 1959 Pamphlet No.9 Steel helmets: "Paint, finishing, textured, matt, brushing, olive drab. One coat will suffice if the existing paint is in fairly good condition, but if the metal is visible a priming coat of H1/8010-99-910-6646 should be applied first." To me that suggests the previous paint would have been similar but if it was DBG (which would mean high gloss) then a primer would have been required for good adhesion. Of course the OD would be not everyone else's OD but British OD as defined in BSC 381C No.298 introduced in 1949
  12. fv1609

    Colour of 1955 HSAT Airborne Helmet

    I can't lay my hands on the appropriate Equipment Regulations 1955, but the definitive painting requirements for 1962 are in EMER WORKSHOPS N 251. Steel helmets:. Paint, priming, red oxide/iron/zinc chrome brushing. Paint, finishing, textured matt, olive drab Note textured matt, not just matt as in general stores & war equipment.
  13. Don't know if any of this is relevant, can't find anything that ties in exactly with your sockets. Electrical services were not just fire control but intercom, loudspeakers, heater for hydraulic oil etc
  14. I don't have a lot of EMER INSTRUMENTS but looking in the Index A 000 the only Bofos reference is B 540-549 Carrier, dial sight (Bofors) M 109. I'm not into armaments so have no idea if that is relevant, I do actually have the Technical Handbook that appeared in the earlier series EMER INSTRUMENTS & SEARCHLIGHTS B 540- 544. Could do a page or two from that if you think it would help. If that is not relevant, is the instrument given any other designation that might be used in other guns?
  15. More likely it would be in EMER INSTRUMENTS, I'll have a look.
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