Sash lock

A sash lock having a case, a locking cam positioned within the case for coaction with a keeper, a planar operating member pivotally mounted on the case for movement about a pivot axis and carrying said locking cam, said case having upper and lower level sections with said locking cam and a first part of the planar operating member being within the upper level section and said lower level section having a top wall with an upper surface generally level with the top of a second part of the planar operating member extending out from said upper level section, said top wall having an opening with a semicircular edge with a center of curvature at said pivot axis and said planar operating member second part having a curved periphery with a center of curvature at said pivot axis to movably fit within and maintain said top wall opening closed in all rotative positions of said planar operating member, and a handle fixed to the upper side of the second part of said planar operating member.

A sash lock having a case formed of an upper level section and a lower level section and a back plate, a pivot mounting on said back plate, an opening in an upper surface of said lower level section having a generally semi-circular edge with said pivot mounting as its center, a generally vertical wall interconnecting said upper and lower level sections and having an intermediate part extending downwardly to the level of said upper surface and overlying said opening, a generally planar operating member pivotally mounted on said pivot mounting and having a generally circular periphery with said pivot mounting as its center and positioned to be closely adjacent said semi-circular edge to provide a movable transition between the exterior and interior of the case while closing off the opening through the generally vertical wall provided by said intermediate part overlying said opening, a peripheral flange on said planar operating member underlying said semi-circular edge, a lock member carried by said planar operating member within the case upper level section, and a handle fixed to the upper side of that part of said planar operating member which is positioned in said opening.

A sash lock having a case, a locking cam positioned within the case for coaction with a keeper, a planar operating member pivotally mounted on the case for movement about a pivot axis to cause operation of said locking cam, said case having upper and lower level sections with said locking cam and a first part of the planar operating member being within the upper level section and said lower level section having a top wall with an upper surface generally level with the top of a second part of the planar operating member extending out from said upper level section, said top wall having an opening with a semi-circular edge with a center of curvature at said pivot axis and said planar operating member second part having a curved periphery with a center of curvature at said pivot axis to movably fit within and maintain said top wall opening closed in all rotative positions of said planar operating member, and a handle fixed to the upper side of the second part of said planar operating member.