bel, it may not be a misspelling at all, but merely an old form of the same word (see the progression listed in the 1913 Websters excerpt above) -- it even looks like the word could have undergone a guichet >> quichet >> guichet cycle (or the author is indulging in a bit of gadzookery!) [or the old Webster's got the progression wrong {the OED doesn't list quichet at all and lists guichet as the modern French}.