Window safety latch

Claim 2

A unitary extruded aluminum shape safety latch for sliding windows comprising a rounded hinge member; a latching member extending outwardly therefrom; a U-shaped web extending downwardly therefrom; a pull handle extending outwardly from said web and away from said latching member, and a catch on the end of said latching member; and U-shaped web comprising a base member, a leg extending from one end thereof joining said latching member and said rounded hinge member, and another leg extending from the other end of said base member and joining said pull handle; and, said leg of said U-shaped member, which joins said latching member and said rounded hinge member, having a channel formed on the internal surface thereof adapted to receive a flat bow spring.

Claim 3

The safety latch of claim 1, wherein said latching member has a second catch integrally formed therewith and adjacent to said first named catch.

Claim 4

The safety latch of claim 1 including a flat bow spring and means on said U-shaped web for engaging and retaining said spring thereon.

Claim 5

The safety latch of claim 1, wherein said pull handle comprises a member extending outwardly from said another leg of said U-shaped web and a member extending outwardly away from and substantially at a right angle to said first named member.

Claim 6

A latching mechanism for sliding windows, comprising a unitary safety latch, a flat bow spring and a lock stile adapted to receive said safety latch; said safety latch comprising a rounded hinge member; a latching member extending outwardly therefrom; a U-shaped web extending downwardly therefrom; a pull handle extending outwardly from said web and away from said latching member; and a catch on the end of said latching member; said U-shaped web comprising a base member, a leg extending from one end thereof joining said latching member and said rounded hinge member, and another leg extending from the other end of said base member and joining said pull handle; said leg of said U-shaped member, which joins said latching member and said rounded hinge member, having a channel formed on the internal surface thereof adapted to receive a flat bow spring; said rounded hinge member being adapted to be pivotally received by a rounded channel therefor on said lock stile; rounded channel means on said lock stile for pivotally receiving said rounded hinge member; and, means on said safety latch for engaging and retaining said spring and said spring being positioned on said latch so as to be between said latch and said locking stile, whereby when said handle of said latch is moved inwardly, pressure is applied on said spring tending to cause it to move towards a flattened position.

Claim 7

A latching mechanism for sliding windows, comprising a unitary safety latch, a flat bow spring and a lock stile adapted to receive said safety latch; said safety latch comprising a rounded hinge member; a latching member extending outwardly therefrom; a U-shaped web extending downwardly therefrom; a pull handle extending outwardly from said web and away from said latching member; and a catch on the end of said latching member; said U-shaped web comprising a base member, a leg extending from one end thereof joining said latching member and said rounded hinge member, and another leg extending from the other end of said base member and joining said pull handle; said leg of said U-shaped member, which joins said latching member and said rounded hinge member, having a channel formed on the internal surface thereof adapted to receive a flat bow spring; said rounded hinge member being adapted to be pivotally received by a rounded channel therefor on said lock stile; rounded channel means on said lock stile for pivotally receiving said rounded hinge member; and, means on said safety latch for engaging and retaining said spring and said spring being positioned on said latch so as to be between said latch and said locking stile, whereby when said handle of said latch is moved inwardly, pressure is applied on said spring tending to cause it to move towards a flattened position.

Claim 8

The latching mechanism of claim 5, wherein said latching member has a second catch integrally formed therewith and adjacent to said first named catch.

Claim 9

The latching mechanism of claim 5, including a window jamb and projection means on said jamb for engaging said catch of said latching member.

Claim 10

The latching mechanism of claim 7, wherein said pull handle comprises a member extending outwardly from said another leg of said U-shaped web and a member extending outwardly away from and substantially at a right angle to said first named member.

Claim 11

In a window construction, a rectangular window frame, a window sash slidably mounted in said window frame between open and closed position, and latch means associated with a frame element of said window frame and an adjacent frame element of said window sash in the closed position of said window sash for normally retaining said window sash against movement from closed to open position; said latch means including, a projection member in said window frame element defining a catch surface perpendicular to the path of sliding movement of said window sash, a unitary safety latch, a lock stile on said window sash for retaining said safety latch, and a spring means on said safety latch for maintaining said safety latch in engaging position on said projection member; said unitary safety latch comprising a rounded hinge member, a latching member extending outwardly therefrom, a U-shaped web extending downwardly therefrom, a pull handle extending outwardly from said web and away from said latching member, and a catch on the end of said latching member; said U-shaped web comprising a base member, a leg extending from one end thereof joining said latching member and said rounded hinge member, and another leg extending from the other end of said base member and joining said pull handle; said leg of said U-shaped member, which joins said latching member and said rounded hinge member, having a channel formed on the internal surface thereof adapted to receive said spring means; said rounded hinge member being adapted to be received by a rounded channel therefor on said lock stile; and, said lock stile having a rounded channel therein for pivotally receiving said rounded hinge member.

Claim 12

In a window construction, a rectangular window frame, a window sash slidably mounted in said window frame between open and closed position, and latch means associated with a frame element of said window frame and an adjacent frame element of said window sash in the closed position of said window sash for normally retaining said window sash against movement from closed to open position; said latch means including, a projection member in said window frame element defining a catch surface perpendicular to the path of sliding movement of said window sash, a unitary safety latch, a lock stile on said window sash for retaining said safety latch, and a spring means on said safety latch for maintaining said safety latch in engaging position on said projection member; said unitary safety latch comprising a rounded hinge member, a latching member extending outwardly therefrom, a U-shaped web extending downwardly therefrom, a pull handle extending outwardly from said web and away from said latching member, and a catch on the end of said latching member; said U-shaped web comprising a base member, a leg extending from one end thereof joining said latching member and said rounded hinge member, and another leg extending from the other end of said base member and joining said pull handle; said leg of said U-shaped member, which joins said latching member and said rounded hinge member, having a channel formed on the internal surface thereof adapted to receive said spring means; said rounded hinge member being adapted to be received by a rounded channel therefor on said lock stile; and, said lock stile having a rounded channel therein for pivotally receiving said rounded hinge member.

Claim 13

The window construction of claim 9, wherein said spring means comprises a flat bow spring and means on said U-shaped web for engaging and retaining said spring thereon.