GB1381148A - Car coupler - Google Patents

Abstract

1381148 Rail vehicle couplers MIDLANDROSS CORP 16 May 1972 [21 May 1971] 22976/72 Heading B7T A Janney tyre railway vehicle coupler comprises a head 10, a knuckle 12 pivoted to said head and movable between a closed position and an open position, said head having a lock receiving chamber 16, a lock 18 in said chamber for locking said knuckle in the closed position, a knuckle thrower 36 whereby said lock is movable out of a locking position to actuate said thrower to effect opening of said knuckle, a front wall 38 and a top wall 56 bounding said chamber, a fulcrum shoulder 40 extending rearwardly from said front wall, said lock having a body portion 20, a fulcrum lug 20a extending forwardly from the lower end of said body portion and being engageable with said shoulder to enable said lock to fulcrum during actuation of the lock to open the knuckle, said lug having a cylindrically curved front face merging with a curved upper surface thereon, said curved face during said actuation of the lock engaging said front wall as said upper surface on the lug moves into contact with the underside of said shoulder, and said body portion having a front face portion 20c in confronting relation with the rearward surface of said shoulder, said curved face being disposed forwardly of said front face portion an amount such that when said face is in engagement with said front wall, said front face portion is spaced rearwardly of the rearward surface of said shoulder. The curved front face may extend the full width of the lug. After a predetermined amount of fulcruming of said lock the top forward edge of the lock body portion engages the top wall 56 and further fulcruming takes place about this point of contact.