> as lemmas
check-lock
check-lock n.
Brit. 
/ˈtʃɛklɒk/
, /ˈtʃɛklɒk/U.S. /ˈtʃɛkˌlɑk/
(a) a small lock for closing the key-hole of a large lock, or otherwise securing a lock, bar, bolt, etc.; (b) (see quot.); so check-locking./ˈtʃɛkˌlɑk/ΘΚΠ
society > travel > rail travel > railway system or organization > [noun] > types of signal system > signal-box > specific apparatus in
check-lock1850
switch-stand1875
society > occupation and work > equipment > building and constructing equipment > fastenings > [noun] > lock > other types of lock
inlock1488
treble lock1680
French lock1787
ringlock1789
thumb-lock1801
bar-lock1828
permutation lock1835
check-lock1850
pin lock1851
time lock1858
garret-lock1860
dead lock1866
seal-lock1871
dead-latch1874
Bramah-lock1875
cylinder lock1878
police lock1910
ziplock1956
solenoid lock1976
D-lock1990
1850 J. Chubb On Constr. Locks & Keys 18 A check-lock, with a small key, which throws a hard steel plate over the large key-hole.
1903 Westm. Gaz. 1 Oct. 10/3 The ‘check-locking’ arrangement..ensures that until the movement of a point or signal has been fully completed the lever in the signal-box..is checked... As soon as the signal or point movement..is properly completed, the ‘check-lock’ is electrically removed.
<
as lemmas