Automatic bolt lock

An automatic bolt lock for locking sliding windows, sliding doors and other sliding interactive members to be locked in any of a multiplicity of positions wherein the automatic bolt lock comprises:

• a lock body comprising a circular hole through an approximate center of the body and a means for securing the lock body to a first sliding member;
• a front side of the lock body for positioning against such first sliding member and a back side of the lock body for positioning away from the first sliding member;
• a D-spring secured to the front side of the lock body, over the circular hole, such that a circular portion of the D-spring conforms to the curve of the circular hole and a straight portion of the D-spring forms a secant across a portion of the circular hole;
• an elongated hollow cylinder attached to the front side of the lock body over the D-spring and the hole;
• a coil spring inserted into the cylinder;
• an elongated bolt, slidably positioned through the coil spring, cylinder, D-spring and hole such that the bolt may be retracted or projected in relation to the front side of the body wherein the bolt comprises;
• a front and a back end;
• a first D-spring notch in the bolt perpendicular to the long axis of the bolt and positioned near the back end of the bolt;
• a second D-spring notch in the bolt perpendicular to the long axis of the bolt, offset approximately 90 degrees from the first D-spring notch and positioned forward of the first D-spring notch;
• a coil spring retaining means around the bolt, perpendicular to the long axis of the bolt and positioned forward of the second D-spring notch to retain the coil spring between the retaining means and the lock body, wherein the coil spring tends to force the bolt forward;
• a handle firmly attached to the back end of the bolt for protrusion outwardly from the first sliding member;
• wherein such a first sliding member may be provided with a hole completely therethrough, through which first member hole the bolt would be free to slide and a second sliding member may be provided with at least one aligned hole into which the bolt may slide removably;
• and wherein the bolt may be secured in a locked position between such sliding members by engaging the straight portion of the D-spring in the first D-spring notch;
• wherein the lock body further comprises a C-shaped protrusion over the hole extending from the front side of the body such that the D-spring and then the cylinder can be placed over the C-shaped protrusion to secure the D-spring in position.

An automatic bolt lock for locking sliding windows, sliding doors, and any slidably interactive members in any of a multiplicity of positions wherein the automatic bolt lock comprises:

• a lock body comprising a first circular hole through an approximate center of the lock body, at least one additional hole through which a securing means can be placed to secure the lock body to a first slidable member, a front side of the lock body for securement against the first slidable member, and a back side of the lock body to be positioned away from the first slidable member, a C-shaped protrusion over the first hole extending from the front side of the lock body, which may be positioned in a hole through such first slidable member and a truncated surfce perpendicular to the back side of the lock body;
• a D-spring placed over the C-shaped protrusion so that a straight portion of the D-spring forms a secant across a portion of the first circular hole in the lock body;
• an elongated hollow cylinder placed over the C-shaped protrusion, covering the D-spring, wherein the hollow cylinder may fit within the hole through the first slidable member;
• a coil spring inserted into the cylinder;
• an elongated bolt, slidably positioned through the coil spring, cylinder, D-spring and first hole in the lock body so that the bolt may be retracted or projected in relation to the front side of the lock body through the hole in the first slidable member and extending beyond the first slidable member to fit removably in at least one aligned hole in a second slidable member and wherein the bolt comprises:
• a front end for positioning through through the first slidable member for interacting with the second slidable member;
• a back end through the lock body;
• a first D-spring notch in the bolt perpendicular to the long axis of the bolt and positioned near the back end of the bolt;
• a second D-spring notch in the bolt perpendicular to the long axis of the bolt, offset approximately 90 degrees from the first D-spring notch and positioned forwardly of the first D-spring notch;
• a third D-spring notch in the bolt perpendicular to the long axis of the bolt and positioned opposite the second D-spring notch;
• a planar surface, parallel to the long axis of the bolt, positioned on the same side of the bolt as the first D-spring notch between the first D-spring notch and the back end of the bolt;
• a coil spring retaining means around the bolt, perpendicular to the long axis of the bolt and positioned closer to the front end of the bolt than the second D-spring notch to retain the coil spring between the retaining means and the lock body, wherein the coil spring tends to force the bolt forward;
• a cone shaped handle firmly attached to the back end of the bolt, comprising knurls for positive gripping, a planar surface such that when the planar surface of the bolt, the truncated surface of the body and the planar surface of the handle are in parallel alignment, the D-spring will lock into the first D-spring groove if the bolt is allowed to project forward in relation to the front side of the body by force of the spring, thereby locking the bolt into a hole in the second slidable member;
• and when the handle is rotated approximately 90 degrees, the bolt also rotates approximately 90 degrees disengaging the D-spring from the first D-spring groove positioning the planar surface of the bolt and the planar surface of the handle approximately perpendicular to the truncated surface such that when the bolt is retracted in relation to the front side of the body, the D-spring will lock into the second D-spring groove or the third D-spring groove depending on which direction the handle is rotated thereby holding the bolt away from the second slidable member.