Claims
- 1. Apparatus for moving a swingable window sash between open and closed positions relative to a fixed window frame and for releasably locking the sash in its closed position, said apparatus comprising a strike mountable on said sash, a latch mountable on said frame to move between locked and unlocked positions, said latch being operable when in said locked position to engage said strike and hold said sash in said closed position and being operable when in said unlocked position to release said strike and free said sash for movement away from said closed position, a reversible rotary actuator mountable on said frame, first and second linkages connected to said sash and said latch, respectively, said first linkage being responsive to said actuator to move said sash away from said closed position when said actuator is rotated in one direction and to move said sash toward said closed position when said actuator is rotated in the opposite direction, and said second linkage being responsive to said actuator to move said latch toward said unlocked position just prior to initial movement of said sash away from its fully closed position and to move said latch toward its locked position at about the same time said sash returns to its fully closed position, said second linkage including an element movable back and forth along the bottom of said frame, second linkage further including an elongated member connected to said element, said elongated member being laterally flexible and extending along the bottom of said frame and upwardly along one side of said frame, said elongated member being longitudinally stiff and being capable when pushed by said element to move said latch between said latched and unlatched positions.
- 2. Apparatus as defined in claim 1 in which said element comprises a slide.
- 3. Apparatus as defined in claim 1 in which said element comprises a nut, and a lead screw telescoped into said nut and operable when rotated to move said nut linearly along the bottom of said frame.
- 4. Apparatus for moving a swingable window sash between open and closed positions relative to a fixed window frame and for releasably locking the sash in its closed position, said apparatus comprising a strike mountable on said sash, a latch mountable on said frame to move between locked and unlocked positions, said latch being operable when in said locked position to engage said strike and hold said sash in said closed position and being operable when in said unlocked position to release said strike and free said sash for movement away from said closed position, a reversible rotary actuator mountable on said frame, first and second linkages connected to said sash and said latch, respectively, said first linkage being responsive to said actuator to move said sash away from said closed position when said actuator is rotated in one direction and to move said sash toward said closed position when said actuator is rotated in the opposite direction, said first linkage comprising a pivotally mounted arm having a free end portion operably connected to said sash, said second linkage being responsive to said actuator to move said latch toward said unlocked position just prior to initial movement of said sash away from its fully closed position and to move said latch toward its locked position at about the same time said sash returns to its fully closed position, said second linkage including a slide which is operably connected to said latch, and means connecting said actuator to said arm and said slide and operable first to move said slide without moving said arm and operable then to pivot said arm as said actuator is rotated to move said sash away from said fully closed position.
- 5. Apparatus as defined in claim 4 further comprising a guide supporting said slide for back and forth movement along a straight path, a slot in said arm, said means comprising a pin connected to said slide and received within said slot to travel back and forth therein.
- 6. Apparatus as defined in claim 5 in which said slot is formed with a straight portion extending parallel to the direction of movement of said slide and is formed with a curved portion at one end of said straight portion, said pin being operable when traveling along the straight portion of said slot to move said latch between said locked and unlocked positions and being operable when traveling along the curved portion of said slot to move said sash between said open and closed positions.
- 7. Apparatus as defined in claim 5 in which said actuator includes a second pivotally mounted arm having a free end portion which carries said pin.
- 8. Apparatus as defined in claim 7 in which said arms are mounted to pivot about parallel axes.
- 9. Apparatus as defined in claim 4 in which said second linkage further includes an elongated member connected to said slide, said elongated member being laterally flexible and extending along the bottom of said frame and upwardly along one side of said frame, said elongated member being longitudinally stiff and being capable when pushed by said slide to move said latch between said latched and unlatched positions.
- 10. Apparatus as defined in claim 4 in which said latch is mounted to pivot between said locked and unlocked positions and is formed with a throat which receives said strike when said latch is in said locked position, one side of said throat being shaped to cam against said strike and push said sash away from said fully closed position as said latch pivots toward said unlocked position.
- 11. Apparatus as defined in claim 10 in which the other side of said throat is shaped to engage said strike and pull said sash toward said fully closed position as said latch pivots toward said locked position.
- 12. Apparatus for causing a window to swing about a predetermined axis between open and closed positions relative to a fixed window frame and for releasably locking the sash in its closed position, said apparatus comprising a strike mountable on said sash, a latch mountable on said frame to move between locked and unlocked positions, said latch being operable when in said locked position to engage said strike and hold said sash in said closed position and being operable when in said unlocked position to release said strike and free said sash for movement away from said closed position, a first arm mounted to turn about an axis paralleling the axis of swinging of said sash, means connecting said first arm to said sash and operable to move said sash between said open and closed positions in response to back and forth turning of said first arm, a slide mounted to move back and forth along a straight path, means connecting said slide to said latch and operable to move said latch between said locked and unlocked positions in response to back and forth movement of said slide, a reversible rotary actuator having a second arm mounted to turn back and forth about an axis paralleling that of said first arm, and means coupling said second arm to said first arm and said slide, said coupling means acting on said slide to move said latch toward said unlocked position and then acting on said first arm to move said sash away from said fully closed position in response to initial turning of said second arm in one direction, and said coupling means acting on said first arm to move said sash toward said fully closed position in response to turning of said second arm in the opposite direction and then acting on said slide to move said latch to said locked position at about the same time said sash reaches said fully closed position.
- 13. Apparatus as defined in claim 12 in which said coupling means comprise a link having one end portion pivotally attached to the free end portion of said second arm, a pin pivotally attached to the other end portion of said link and connected to said slide, and a slot formed in said first arm and slidably receiving said pin.
- 14. Apparatus as defined in claim 13 in which said slot is formed with a straight portion extending parallel to the direction of movement of said slide and is formed with a curved portion at one end of said straight portion, said pin being operable when traveling along the straight portion of said slot to move said latch between said locked and unlocked positions and being operable when traveling along the curved portion of said slot to move said sash between said open and closed positions.
- 15. Apparatus for moving a swingable window sash toward and away from a closed position relative to a fixed window frame and for releasably locking the sash in its closed position, said apparatus comprising a strike mountable on said sash, a latch mountable on said frame to move between locked and unlocked positions, said latch being operable when in said locked position to engage said strike and hold said sash in said closed position and being operable when in said unlocked position to release said strike and free said sash for movement away from said closed position, a reversible rotary actuator mounted on said frame, mechanism responsive to rotation of said actuator in a first direction to first move said latch from said locked position to said unlocked position and to then move said sash away from said closed position, said mechanism being responsive to rotation of said actuator in a second direction to first move said sash toward said closed position and then to move said latch toward said locked position at about the same time said sash reaches said closed position, said mechanism comprising a screw coupled to said actuator for rotation by the latter, first and second nuts movable back and forth along said screw, a first linkage connected between said sash and said first nut and operable to move said sash away from said closed position when said first nut is moved in one direction along said screw and to move said sash toward said closed position when said first nut is moved in the opposite direction along said screw, a second linkage connected between said latch and said second nut, said second linkage being operable to move said latch toward said unlocked position when said second nut is moved in said one direction along said screw and to move said latch toward said locked position when said second nut is moved in said opposite direction along said screw, and means operable when said sash is in said closed position and said latch is in said locked position to delay movement of said first nut in said one direction along said screw until said screw has been rotated sufficiently far to advance said second nut along said screw a predetermined distance in said one direction, and said means also being operable when said sash is in said closed position and said latch is in said unlocked position to prevent movement of said first nut along said screw in said opposite direction during rotation of the screw while permitting said second nut to move along said screw in said opposite direction.
- 16. Apparatus as defined in claim 15 in which said screw includes a threaded portion and an unthreaded portion, said unthreaded portion constituting said means, said first and second nuts being telescoped over said unthreaded portion and said threaded portion, respectively, when said sash is in said closed position and said latch is in said locked position.
- 17. Apparatus as defined in claim 16 further including means engageable with said second nut and operable to move the first nut from the unthreaded portion of said screw to the threaded portion thereof when said sash is in said closed position and as an incident to movement of said second nut through said predetermined distance in said one direction along said screw.
- 18. Apparatus as defined in claim 17 in which said engageable means comprise a sleeve telescoped over said screw and located to be engaged by said second nut when the latter is moved in said one direction along said screw after said latch has been moved to said unlocked position, and means connecting said sleeve and said first nut for movement in unison along said screw.
- 19. Apparatus as defined in claim 18 in which said second nut is located between said first nut and said sleeve.
- 20. Apparatus for causing a window to swing about a predetermined axis between open and closed positions relative to a fixed window frame and for releasably locking the sash in its closed position, said apparatus comprising a strike mountable on said sash, a latch mountable on said frame to move between locked and unlocked positions, said latch being operable when in said locked position to engage said strike and hold said sash in said closed position and being operable when in said unlocked position to release said strike and free said sash for movement away from said closed position, a rotatable screw, a reversible rotary actuator for selectively rotating said screw in either a first direction or in a second direction, a sleeve and first and second nuts telescoped over said screw, a first linkage connecting said first nut to said sash, said first linkage being operable to open said sash when said first nut is moved in one direction along said screw and being operable to close said sash when said first nut is moved in the opposite direction along said screw, a second linkage connecting said second nut to said screw, said second linkage being operable to move said latch from said locked position to said unlocked position when said second nut is moved in said one direction along said screw and being operable to move said latch from said unlocked position to said locked position when said second nut is moved in said second direction along said screw, said screw having threaded and unthreaded portions, said threaded portion being received within said sleeve and said second nut, said unthreaded portion being received in said first nut when said sash is in said closed position, said second nut being located between said first nut and said sleeve and being spaced along said screw from said sleeve when said latch is in said locked position, said second nut engaging said sleeve and moving said sleeve in said one direction along said screw after said second nut has advanced through a predetermined distance in said one direction, and means connecting said sleeve to said first nut and operable to move said first nut onto the threaded portion of said screw during advance of said sleeve in said one direction.
CROSS-REFERENCE TO A RELATED APPLICATION
This application is a continuation of copending application Ser. No. 219,582 filed July 14, 1988, now abandoned, which, in turn is a continuation-in-part of application Ser. No. 139,977, filed on Dec. 3, 1987, and now abandoned.
US Referenced Citations (7)
Foreign Referenced Citations (2)
Number |
Date |
Country |
226785 |
Jul 1987 |
EPX |
692652 |
Nov 1930 |
FRX |
Continuations (1)
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Number |
Date |
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Parent |
219582 |
Jul 1988 |
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Continuation in Parts (1)
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Number |
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139977 |
Dec 1987 |
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