AN IMPROVED FLUSH BOLT

摘要

A latch bolt for use with either hollow or solid door, window or similar frame elements to achieve a flush mounting. A casing 1 incorporates a pair of tracks 8 in which a bolt 14 supporting slide 9 is mounted. A face plate 3 that includes a lock mechanism access opening 4 is attached over front opening 2 of face plate 3. Slide 9 carries a locking mechanism 15 which extends into the opening 4. A latch plate 15a of the locking mechanism is engageable with a detent 16 to lock the bolt 14. The tracks 8 are set back from the face plate 3 to provide that the locking mechanism 15 does not extend beyond the front face 3a of the face plate 3. Wedging means 17, forming undercuts 17b and 17c with the rear side 3b of the face plate 3 are provided for mounting the fitting. To that end the wedging element 17 at one end is adjustable being part of a slide 20 carried by cap-screw 22. In the case of a hollow parent element 23 the undercut 17c is seated on the rim section 18 at the lower end of an opening 24 therein. The adjustable wedging element 17 is then extended to similarly engage on the opposing rim section 18b and with further extension wedge the fitting in place. In the case of a solid parent element 29 blocks 25 are provided for fixing in the ends of a mounting cavity 28. The blocks incorporating lips 26 which replicate the rim sections 18 enabling similar mounting.