That's about what I thought. That first obtainable Automatic SSU with the little disc over the bottle cap deflector was a 1954 model. The disc disappeared (I think) the next year.
On Fri, Apr 27, 2012 at 3:34 PM, Sprinkler Academy - C Bilbo < [email protected]> wrote: > > I am a geek for this stuff. > > The "Standard Sprinkler" was researched and developed at Factory Mutual at > least as early as 1947. The 1947 edtion of NFPA 13 (NBFU 13) allows for > newly designed sprinkler deflectors for effective water distribution to be > considered. By 1952, Factory Mutual had enough data to conclude that the > new deflector designs provided superior water spray patterns, droplet > sizes, and discharge to replace the "Conventional Sprinkler". So, as > expected, the term "Spray Sprinkler" makes its first appearance in the 1953 > edtion of NBFU 13. > > It wasn't until the release of the 1955 edition that both, the 'Standard' > and the 'Old-Style' (or 'Conventional'), are introduced into the standard. > They are both considered "spray sprinklers"..... > > The new concept is explained in detail in Section 1 - General Information. > Article 100 explains that this edition makes a break from the sprinkler > that had been used for the previous 70 years. > > Interestingly, this is also where the vertical line (or 'bar') makes it's > first appearance to indicate "new material for this edition". > > It should be recognized that the above is my opinion as a member of the > NFPA, and has not been processed as a formal interpretation in accordance > with the NFPA Regulations Governing Committee Projects and should therefore > not be considered, nor relied upon, as the official position of the the > NFPA, nor any of their technical committees. > > Sincerely, > > > Cecil Bilbo > Academy of Fire Sprinkler Technology > Champaign, IL > 217.607.0325 > www.sprinkleracademy.com > [email protected] > > OUR STUDENTS SAVE LIVES!! > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20120427/e1655949/attachment.html > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > -- Ron Greenman Instructor Fire Protection Engineering Technology Bates Technical College 1101 So. Yakima Ave. Tacoma, WA 98405 [email protected] http://www.bates.ctc.edu/fireprotection/ 253.680.7346 253.576.9700 (cell) Member: ASEE, SFPE, ASCET, NFPA, AFSA, NFSA, AFAA, NIBS, WSAFM, WFC, WFSC They are happy men whose natures sort with their vocations. -Francis Bacon, essayist, philosopher, and statesman (1561-1626) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20120427/57a647be/attachment.html> _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
