quadraginta
Becoming Beth
It seems to me that you are ducking a vital part of the challenge put to you.
LondonJohn asked for a Corbin domestic lockset which resembles the one installed in the girls' house, and where the key operates both the deadbolt and the spring latch.
In response you assert (without evidence) that you can go to any locksmith get a Corbin domestic lockset where the key operates both the deadbolt and the spring latch.
Why don't you do that last little bit of work and (a) show that such a system exists and (b) show that it resembles the one installed in the girls' house?
I don't think you've been paying attention.
Without the model number of the specific lock assembly on that specific door it would be quite impossible to prove that that lock had that feature. Even if we did know the model number it would be impossible to prove that that particular installation of that lock had that particular feature enabled.
This has been pointed out repeatedly. The first time by Dan O., who certainly can not be accused of evasion in an effort to defame Knox & Co.
The initial discussion was prompted by my observation that the specific lockset in question was not exactly "broken" as had been alleged for so long, but had been deliberately defeated. LJ chose to offer the opinion that this condition must have been the consequence of an inept designer or installer. I disputed this.
I pointed out that such a condition as he proposed was neither needful or likely. He questioned the very existence of such lockset features as I described. I provided an example. The goalpost moved.
We have indeed seen a lockset that "resembles the one installed in the girls' house" in these very pages. Thanks to katy_did's quite cogent and helpful contributions to this topic both Dan O. and I noticed a likely candidate in the Corbin catalog pages which LJ himself posted.
The info provided in that catalog page was insufficient to verify the specific features of the lockset represented on that page, but that is unimportant. First, since we cannot prove that it does anything more than "resemble" the apt. lockset it establishes nothing. Beyond an opportunity to move the goalpost yet again, that is. Second, I can comfortably rely on my knowledge of the field to conjecture with some authority that such a mortise lockset application could (and quite probably would) be adapted to a key function such as I have described.
I think that you may have lost sight of the fact that aside from LJ's initial disbelief that such a lock function even existed at all, and his continued insistence that even if it did it was somehow rare and unusual, this entire topic is moot
As I have said, repeatedly.
There has been no suggestion after the photos of the door latch were brought forward in this thread that the latch was not intentionally disabled, which was my point. Whether that was done in response to an abysmally incompetent installation (a theory which LJ seems quite enamored of for some reason) or because the design had proven to be inconvenient to some user (my hypothesis) makes no difference to that point.
I have devoted a fair amount of time to explaining the reasoning behind this hypothesis. I have even offered some basic education about the nature and variety of lockset technology. It is quite possible that those particular details of the particular lockset in question may not even be available in a on-line format. We have already looked at one "likely" example which didn't. Please note that the one we have looked at did not offer any suggestion that such a key function was unavailable, or that it was. The data was not included as part of the ad. Anyone with enough familiarity with the subject to know to ask would realize that such functionality was probably available.
Not that it would matter, since we don't even know with any certainty the particular lockset in question.
My suggestion that if LJ wishes to improve his own personal knowledge of the subject further (at least beyond the depths and heights available on the website of an English version of Home Depot) by consulting someone who will have, on hand, a great deal of product information that is often not accessible by Internet as well as the knowledge and experience to use it is quite reasonable.
Accusing me of "ducking a vital part of the challenge" by declining to spend yet more of my own time on a web search for data which may not posted to the web in the first place, in defense of a detail irrelevant to the point I was making, for the edification of someone whose motives may be more rhetorical than sincere is not very reasonable of you.