Figure 19. Extra distance is required for the EMK to enter the rear compartment. The SARGENT Union Lock was constructed with a rotating flat locking plate containing three out dents or flat control lugs, as seen in Fig. 4 and Fig. 7 in the patent drawing (Fig- ure 21). This locking plate is situated behind the knob and is set into the knob shank. A spring-loaded stop pin, extending outward from the shell of the housing encircling the plug, prevents the plate from freely rotating to be released. There is a small hole present in the plate, which is mated with a detent to keep the plate in its place. The tip of the release key, as it is called (CTRL key), enters a small notch in the locking plate, thus allowing the plug/shell to rotate slightly so the entire knob set can then be removed. The release key should be a seven-pin blank with a #6 cut at the tip. Construction Cores SARGENT, as do other manufacturers, uses a split-finish construction core for more sensitive areas (entrance, equipment rooms, etc.). This way, there’s no mistaking the fact that it’s only a temporary core, regardless of IC mortise finish. As another added identifi- cation feature, a shallow blind hole is drilled at the 1 o’clock position in the plug. Na- tionwide bittings for the 6300 core include: Control Bitting = 743658 Operating Bitting = 387436 34 KEYNOTES APRIL 2014 closets, etc.) a plastic two-piece disposable core can be provided. This core is operated via a screwdriver entering the plug area. Parting Thoughts As with the other manufacturers, the future will depend on both market share and vision. Personally, I like the fact that SARGENT has held on to the “my housings only” concept. It is reminiscent of days gone by. But enough of memories. Market share requires consolidation and foresight. With the direction of ASSA ABLOY, I’m sure that thoughtful future planning is in place. And somewhere in their meetings, the word retrofit will enter the discussion. Coupled with SAR- GENT’s ability to constantly innovate and offer more unique products and keying systems to meet the needs of its customer base, this ma- jor force within the global locksmith-security arena will continue to expand. I doubt that a crystal ball was used to achieve this, but I’m most sure that the future of SARGENT is part of a grand master plan that’s now unfolding. And I’m sure founder Joe Bradford Sar- gent would be amazed. Author’s Note: A heartfelt thank you is extended to Lee Garver, SARGENT, ASSA ABLOY expert, for his efforts in assisting me with the preparation of this two-part series. Figure 20. SARGENT Union Lock patent drawings. Figure 21. Union Lock was constructed with a rotating flat locking plate with three out dents or flat control lugs. am “Bill” M. Lynk, , CPS, M.Ed., has been smith since 1975 s the owner of www. global.com. Bill is an ecialist, an industry r, the subject matter t on IC for ALOA, and OA ACE instruc- aching classes on interchangeable cores and master keying across the country. He has originated SFIC Technical Manuals for both national and international lock manufacturers, and maintains a working relationship with the major lock and secu- rity manufacturers throughout the world. In 2013, he was named Keynotes Author of the Year. WWW.ALOA.ORG
