Hi Cecil, That's a lot of holes! And lots of good information. What I was thinking but didn't say, was "before sidewall sprinklers were approved for ordinary hazard". My recollection is that sidewalls were for quite a long time, only approved for light hazard occupancies. Mark at Aero
Sent from my iPhone > On Apr 10, 2014, at 7:49 PM, "Sprinkler Academy - C Bilbo" > <[email protected]> wrote: > > > > > Mark, > On April 4, 1932, Mr Emil Tyden of Hastings, MI applied for a patent of a dry > type pendent sprinkler. The dry barrel of the sprinkler assembly was > attached to a horizontal portion of the assembly that was threaded into a tee > with it's outlet turned on it's side rather than pointing towards the floor. > The assembly could more accurately be called a 90 degree dry pendent > sprinkler. Mr Tyden was the founder of the Viking Corporation. The patent > was granted on March 28, 1933. Mr Tyden is credited with the invention of > the dry sprinkler. > In 1934, Ira Knight applied for and received (1936) a patent for the sidewall > sprinkler. > In 1962, Floyd Lee applied for and received (1964) a patent for a dry adapter > (a dry barrel) for connection of sprinklers to pipe. He demonstrated a > vertical sidewall could be atttached and utilized..... > So would that count as a "Dry Sidewall Sprinkler"?? > And for additional historical perspective: > In 1938, Mr Arthur C Rowley of the Globe Automatic Sprinkler Co and Mr Willis > Hodgman filed patent applications for the straight body Dry Pendent > Sprinkler. In 1939, both patents were issued. > The Hodgman model allowed water flow into the barrel when an internal pin or > an internal barrel dropped and a clapper was pushed/fell open. The pin or > barrel was held up by the element of the sprinkler. > The Globe sprinkler had a ball bearing that prevented water flow from > entering the body until the element activated and allowed an internal barrel > to drop. When the inner tube dropped, the ball bearing was released and > escaped completely from the body as water pushed it out. > In 1941, the General Fire Extinguisher Company (which became Grinnell, which > became Tyco) applied for and received (1942) a patent for a dry pendent with > a spring inside that pushed an internal barrel up into the water-filled pipe. > A hole in the side of the internal barrel near the top allowed water in when > pushed up so the hole was in the waterway of the pipe above. > It should be recognized that the above is my opinion as a member of the NFPA > 13 Technical Committee, 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!! > > > >> From: [email protected] >> To: [email protected] >> Subject: RE: Fig. A.8.15.7 >> Date: Thu, 10 Apr 2014 22:50:46 +0000 >> >> I believe it was added to the standard prior to the advent of the dry >> horizontal sidewall. Poke holes in that! :-) >> Mark at Aero >> >> -----Original Message----- >> From: [email protected] >> [mailto:[email protected]] On Behalf Of Ron >> Greenman >> Sent: Thursday, April 10, 2014 3:21 PM >> To: [email protected] >> Subject: Re: Fig. A.8.15.7 >> >> I presume you guys are talking about that picture with the dry pendants >> poking thru the wall to outside at 45 degrees. I've seen many I Seattle and >> even changed out a couple that worked successfully. I just went thru the >> 1978 standard page by page, only 207 of the little ones, including the >> index, and it's not in there. >> >> Ron Greenman >> ...On the phone >> >>> On Apr 10, 2014, at 2:52 PM, Roland Huggins <[email protected]> >>> wrote: >>> >>> some great answers. Mine was going to be BECAUSE >>> >>> It seems like once something makes it into a standard, it takes an act of >>> congress to get it out (and sine congress isn’t doing much I guess it’ll >>> never happen). It’s never been questioned (that I can remember) in the 18 >>> yrs that I’ve been on the committee. It’s mainly there to show it can be >>> used in other than the normally acceptable manner. We did the same with >>> sidewall sprinklers under the edge of a overhead door. That doesn’t answer >>> the question why not use a dry side wall? >>> >>> I’ve added it to my list of items for the 2019 cycle. So don’t hold your >>> breath for a quick answer unless you can accept ‘cause. >>> >>> Roland >>> >>> Roland Huggins, PE - VP Engineering >>> American Fire Sprinkler Assn. --- Fire Sprinklers Saves Lives >>> Dallas, TX >>> http://www.firesprinkler.org >>> >>> >>> >>> >>> >>>> On Apr 10, 2014, at 1:37 PM, Steve Leyton <[email protected]> >>>> wrote: >>>> >>>> Anyone out there, committee members or clairvoyants, who can say why >>>> this illustration shows a dry-pendent sprinkler in what appears to be a >>>> non-conforming orientation? >>>> >>>> Thanks, >>>> SML >>>> _______________________________________________ >>>> Sprinklerforum mailing list >>>> [email protected] >>>> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprink >>>> ler.org >>> >>> _______________________________________________ >>> Sprinklerforum mailing list >>> [email protected] >>> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl >>> er.org >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
