초록 ▼

A pre-assembled latch for mounting externally on the header of a pivotal sash window of a double-hung sash window assembly. The latch includes a housing having a spring-biased latch bolt normally providing a protruding bevelled formation for engaging a guide rail of the window assembly. The housing

A pre-assembled latch for mounting externally on the header of a pivotal sash window of a double-hung sash window assembly. The latch includes a housing having a spring-biased latch bolt normally providing a protruding bevelled formation for engaging a guide rail of the window assembly. The housing has depending spring clip means integral therewith for retaining the latch bolt operably assembled in the housing and the latch bolt has means cooperating with the housing for retaining the spring means in biasing association with the latch bolt.

대표청구항 ▼

In a pivotal window sash adapted for installation in the master frame of a double-hung sash window assembly having opposed, vertically extending guide rails to enable vertical reciprocal sliding movement of the sash in the master frame while cooperatively engaged with the guide-rails, the sash havin

In a pivotal window sash adapted for installation in the master frame of a double-hung sash window assembly having opposed, vertically extending guide rails to enable vertical reciprocal sliding movement of the sash in the master frame while cooperatively engaged with the guide-rails, the sash having a header, a base and a pair of stiles cooperatively connected together at adjacent extremities thereof to from a rectangular sash frame; the herein invention comprising a manually operable latch adapted to be installed as a pre-assembled unit on an exterior surface of the header for releasably securing said sash to said master frame to permit pivotal movement of said sash and comprising: a housing including a top wall having an elongated access opening therethrough, a pair of opposing end walls, one of said end walls having a passageway therethrough; a latch bolt slidably received in said housing and having a beveled end aligned with and reciprocal in said passageway and arranged to be engaged in a guide rail for locking the window sash against pivotal movement; spring means in said housing and engaging sad latch bolt normally to bias said beveled end into said guide rail; said latch bolt having a laterally extending lip formation integral therewith and having a lateral free edge for overlying said spring means and retaining said spring means in operable assembly in the housing; said top wall having integrally formed means for engaging and retaining the latch bolt in operable assembly in the housing and permit reciprocal sliding movement thereof, comprising a pair of spring-like clip formations depending from said top wall along opposing longitudinal edges of said access opening to engage said latch bolt along opposing longitudinal edges thereof, said latch bolt having an upstanding actuator member integral with a surface of said latch bolt and slidable in said access opening for manually moving the latch bolt.