Patent Publication Number: US-11047151-B2

Title: Surface mounted barn door privacy lock

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation-in-part of U.S. patent application Ser. No. 15/616,752, filed on Jun. 7, 2017 which claims benefit under Title 35, United States Code § 119(e) of U.S. Provisional Application No. 62/412,682 filed on Oct. 25, 2016 and issued as U.S. Pat. No. 10,081,966 on Sep. 25, 2018, incorporated herein by reference in its entirety. 
    
    
     FIELD OF THE INVENTION 
     The following invention relates to barn doors and locks for barn doors. More particularly, this invention relates to privacy locks for barn doors, and most particularly those types of barn doors utilized within a building interior to provide a privacy lock therewith. 
     BACKGROUND OF THE INVENTION 
     Of the many styles of doors, one type of door is referred to as a “barn door.” A barn door is provided directly outside of (or inside of) a doorway opening surrounded by a frame including a pair of opposing jambs below a lintel. The barn door is mounted on a sliding track or other support, typically above the opening and with the door suspended from this track or other sliding support. This track is over the door opening and also to a lateral side of the door opening. The barn door slides on the track between an open position (where it is suspended from the track portions which are laterally spaced to the side of the door opening) to a closed position (where the door is suspended from the track where it is located directly above the door opening). Barn doors are particularly useful when space is not available for a pivoting door and where a wall in which the door is located is too thin to accommodate a pocket door or a pocket door is otherwise undesirable. Barn doors can also be selected for aesthetic reasons or for financial reasons, in that the barn door is a rather simple overall style of door. 
     One problem with such barn doors is that they typically do not include locks associated therewith. Many doorways benefit from having a door which is lockable, at least for privacy purposes, if not for full security purposes. Accordingly, a need exists for a lockset to facilitate the locking of a barn door. Such a lock should beneficially include some form of emergency entry key to defeat the lock from the outside. 
     Privacy locks are known for pivoting doors and pocket doors which include a handle or knob which rotates and causes a bolt to translate the engage/disengage and lock/unlock the door. However, such known locks have the handle/knob mounted to the door with the bolt engaging/disengaging the doorway jamb. With a barn door, such a known prior art lock is not effective because the door is not aligned coplanar with the wall plane, but rather is offset from the wall plane. Thus, some other solution is needed to the problem of providing a privacy lock on a barn door. 
     In some instances, barn doors are already installed adjacent to a doorway or otherwise already configured without any locks associated therewith. A further need exists for a lock set or other lock for a barn door which can be easily retrofitted onto a doorway and barn door combination after the barn door has already been installed, or for retrofitting onto a barn door during initial installation, but which barn door and associated doorway were not originally configured to include such a lock. Also, it is desirable that a lock for a barn door be easy to install, in at least some instances, to allow for lower-cost solutions and to allow those with lesser skills to be able to install a barn door privacy lock or other barn door lock. 
     SUMMARY OF THE INVENTION 
     With this invention, a lock is provided for a barn door in the form of a lockset which is mountable to a face of a jamb of a doorway, typically on a side of the doorway adjacent to a leading edge (the edge that leads when the barn door is closing) of the barn door when the door is in an open position, but the lock could be on either opposing face of either of the door jambs. The barn door preferably is suspended from above on a sliding (or rolling) rail, but also preferably includes some form of guideway (such as a track element), which is provided on the floor to keep a lower edge of the barn door substantially within a vertical plane while sliding between an open and a closed position. Such track for alignment of the barn door could be provided directly below the rail from which the barn door is suspended and on one or both lateral sides of the frame surrounding the doorway. 
     The barn door is modified to include a strike therein which receives a bolt of the lockset when the barn door is locked. The strike preferably has a cylindrical shape with a hollow central core. In one embodiment, the strike can be provided from a combination of inner and outer cylindrical pieces which nest together on a common central axis and each include a beveled head on outer ends thereof and with one piece threading into the other so that they can be coaxially brought together from opposite sides of the barn door and threaded one into the other until they tightly attach to the barn door. The barn door would first have a hole drilled therethrough which would receive these inner and outer pieces of the strike. 
     As an alternative, the barn door could merely have a hole drilled (or otherwise formed) therein at a strategic location to allow for the bolt to be selectively inserted or removed for locking or unlocking of the barn door. The hollow core of the strike can be perfectly cylindrical or could taper at least adjacent to a side thereof facing the passage making up the doorway, or otherwise be slightly oversized so that less than perfect alignment between the lockset and the strike would still facilitate receipt of the bolt into the strike for locking of the barn door. 
     The lockset of one embodiment of this invention generally includes two major parts including a lockcase and a handling assembly, in addition to the strike. The lockcase includes a body housing a lock mechanism which receives input from a shaft and output to the bolt, and is mounted within a recess in the face of the jamb, on one side of the wall passage adjacent to where the barn door is located and aligned with the strike when the barn door is closed. A second part of the lockset is in the form of a handling assembly which is mounted to the face of the jamb adjacent to the recess and on the face of the jamb which faces into the passage of the doorway. This handling assembly acts as both trim and also supports a handle through which the lockcase can be actuated. In particular, the lockcase includes the body which receives the shaft which is coupled to the handle of the handling assembly. When the handle is rotated, the shaft is also rotated about its long axis and causes an input into the locking mechanism within the body which causes the bolt of the lockset to translate linearly into or out of the strike to lock or unlock the barn door. 
     The jamb is either entirely hollow or at least includes a sufficient recess within an interior thereof to allow the lockcase to be located therein. In one embodiment, this recess is in the form of a cylindrical hole which extends into the face of the jamb, with this hole located at a height above ground matching a height of the strike in the barn door. The hole is sufficiently large so that it also extends out of an exterior side of the jamb and the entire body and other portions of the lockcase can fit into this hole and for the bolt to be able to extend out of an exterior side of the jamb. The cylindrical hole is covered by portions of the handling assembly at the opening through the face of the jamb and covered by a rim with an annular flair surrounding the body adjacent where the bolt protrudes from the body at the exterior side of the jamb, with this flair, abutting against the exterior surface of the jamb. 
     A portion of the hole at the inwardly facing face of the jamb receives the handling assembly therein and the handling assembly is appropriately coupled to the lockcase, which typically is inserted through the portion of the hole at the exterior side of the jamb and accessing the common recess, so that the lockcase and handling assembly, when attached together, securely hold each other within the recess. Preferably frame screws are also utilized to directly fasten the handling assembly (and hence also the lockcase) to the frame. 
     Details of the lockcase and locking mechanism within the body can be taken from lockcase arts where such locking mechanisms are provided for translating a bolt, such as a deadbolt, into and out of a strike on a door jamb from an edge of a standard pivoting door. Other forms of lockcase locking mechanisms could alternatively be utilized known in the prior art or hereafter discovered. While the bolt is preferably of round cross-section and about one centimeter in diameter, it could be larger (or smaller) and non-circular, such as to match known deadbolt cross-sections. 
     As one example of such a locking mechanism for the lockcase, the shaft coupled to the handle could have a spur gear thereon which interacts with a rack gear coupled to the bolt, so that when the shaft is rotated it causes the rack gear to translate. A size of the spur gear and size of teeth on the rack gear can be selected to control a ratio of shaft turning to bolt translation to match a desired design. In more complex mechanisms, a multi-gear drive train could be interposed between the shaft and post, such as so that a relatively small amount of handle rotation (i.e. 90° of rotation) causes the bolt to translate approximately two centimeters or more, so that a secure locking action can be achieved. The bolt can have a tip threaded to a trunk, both of similar diameter, with the tip threaded concentrically into a threaded bore in the trunk, so that the bolt can be extended and have its length fine tuned by rotating the tip relative to the trunk, and so that bolt length is optimized. 
     A key is also provided with the overall lockset in a preferred form of the invention. The strike preferably passes entirely through the barn door in this preferred embodiment, so that the key can be placed from outside of the barn door into the strike and push back the post into the body, so that emergency access from an exterior of the barn door can be achieved. The hole on an exterior of the strike can be shaped with a unique shape which will only receive a key of a corresponding shape if desired. As another alternative, the strike could have a blind hollow core which is not accessible from the exterior, such as to provide added security. 
     The handling assembly generally includes three parts including a base plate, a cover plate and handle. The base plate mounts to the body of the lockcase and the cover plate mounts to the base plate. Furthermore, the base plate preferably has frame screws which fasten directly to the jamb, so that the entire lockcase can be held securely to the jamb through the frame screws holding the base plate to the jamb and with the base plate securely attached to the lockcase. 
     Attachment of the base plate to the body of the lockcase occurs through two mount screws which thread into mount holes in the body (or into standoffs associated with the body). The base plate has a contour which includes an annular floor with a central hole passing therethrough and with a perimeter edge of the floor having a collar extending perpendicularly therefrom, and with a flange extending radially outwardly from a portion of the collar spaced from the annular floor. This flange and annular floor are preferably in parallel planes offset from each other by a width of the collar. 
     The hole in a center of the annular floor allows the shaft to pass therethrough and couple to the handle and to the body of the lockcase. Smaller holes in the floor and spaced from the central hole (through which the shaft passes) accommodate the mount screws which pass through the annular surface and then into the mount holes or standoffs associated with the body (or otherwise the base plate is fastened to the body of the lockcase). 
     Heads of these mount screws are recessed within the base plate in that these heads have a lesser height than a depth of the collar, preferably with over half of a depth of the collar left open, without the mount screw heads extending appreciably into this collar space. Frame screws are preferably provided passing through the flange of the base plate. In the embodiment depicted, four such frame screws are provided which secure the flange of the base plate directly to the face of the jamb around the cylindrical hole forming and/or accessing the recess in the jamb. The frame screws preferably have flat heads and holes in the flange taper as do undersides of the frame screw heads so that the frame screw heads are substantially flush with the flange outer surface when tightened. Alternatively, a shoulder of the cover plate (described below) can be recessed to accommodate the heads of the frame screws. 
     The cover plate has a contour which matches outer portions of the base plate and the cover plate is attachable to the base plate. In particular, the cover plate also includes a circular flat shroud surface similar in size to the annular floor and oriented to be parallel with the annular floor of the base plate. A ring extends perpendicularly from a perimeter of the shroud surface of the cover plate with an outer portion of this collar having a shoulder extending radially therefrom and in a plane parallel with the shroud surface. The ring of the cover plate has a lesser depth than the collar of the base plate, so that when the circular flat shroud surface is nested within the recess inboard of the collar of the base plate, a spacing still exists between the circular shroud surface of the cover plate and the annular floor of the base plate which accommodates the heads of the mount screws. 
     The collar of the base plate includes female threads formed thereon and the ring of the cover plate includes male threads formed thereon. Thus, the cover plate is attachable to the base plate by threadable attachment and rotation of the cover plate to cause engagement of the threads of the ring with the threads of the collar. In this manner, the cover plate can cover all of the frame screws and mount screws and leave a clean exterior finish for the lockset, according to one embodiment of the invention. 
     A center of the circular flat shroud surface of the cover plate has a hole therein through which the shaft extends and supports a lever or other user engaging portions of the handle. The handle is recessed within the ring sufficiently so that the handle does not extend into the doorway (or only slightly extends into the doorway). Fingers of a user can reach into this recess in the ring to grip the handle and rotate the handle to cause translation of the bolt for locking or unlocking of the barn door. The handle of the embodiment shown is a basic bar handle fixed to the shaft at its center. Other forms of handles known in the prior art could be used as well with appropriate user engaging portions. The handle typically rotates to cause bolt translation, but could be a sliding or otherwise translating handle leading to bolt translation. 
     In a further embodiment, a lock is provided for a barn door which is mountable upon a surface of a doorway jamb. Such a surface mountable barn door lock avoids the need to cut a hole in the jamb or otherwise construct or modify the jamb to receive the lock set internally therein. Such a surface mountable lock that can include a lockcase such as with a base plate and cover together forming the lockcase, and with the base plate screwed or otherwise fastened to the jamb. A bolt is movable relative to the lockcase between a retracted and a deployed position. In one embodiment, the bolt is mounted to a shuttle and the bolt and shuttle slide together relative to the lockcase. A lever within the lockcase pivots and engages the shuttle to cause the shuttle to translate when the lever pivots. A handle on the lever extends out of the lockcase and is manually actuatable to position the bolt in either the deployed (locked) position or in the retracted (unlocked) position. In such an embodiment, the strike in the barn door could be similar to other strikes disclosed herein. 
     OBJECTS OF THE INVENTION 
     Accordingly, a primary object of the present invention is to provide a privacy lock for a barn door. 
     Another object of the present invention is to provide a barn door for a doorway passage which includes a privacy lock. 
     Another object of the present invention is to provide a method for locking a barn door. 
     Another object of the present invention is to provide a method for providing emergency access through a locked barn door. 
     Another object of the present invention is to provide a method for installing a lockset into a barn door. 
     Another object of the present invention is to provide a barn door lock which can be disabled from an outer side thereof in an emergency. 
     Another object of the present invention is to provide a barn door lock which can be used by a disabled individual. 
     Another object of the present invention is to provide a privacy lock for a barn door which has a recessed handle to prevent significant blocking of the doorway. 
     Another object of the present invention is to provide a privacy lock for a barn door which is easy to use and which has a desirable aesthetic appearance, such as an appearance with no fasteners showing. 
     Another object of the present invention is to provide a lock for a barn door which can be easily installed on an existing door jamb and into an existing barn door. 
     Another object of the present invention is to provide a lock for a barn door which can be mounted to a surface of a door jamb, rather than requiring embedding into the door jamb. 
     Another object of the present invention is to provide a privacy door lock for a barn door which has a handle of different sizes to accommodate disabled users. 
     Another object of the present invention is to provide a door lock for a barn door which tends to maintain a position with a bolt thereof either in a deployed position or in a retracted position. 
     Other further objects of the present invention will become apparent from a careful reading of the included drawing figures, the claims and detailed description of the invention. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view of a wall with a doorway therein the head with a barn doors mounted adjacent thereto (one sliding from the left and one sliding from the right to illustrate two barn door positioning options), and with a privacy door lock according to this invention shown therewith, for locking of a leading edge or a trailing edge of a barn door. 
         FIG. 2  is a perspective view of that which is shown in  FIG. 1  from an interior of the doorway, and showing a privacy door lock with a recessed handle according to one embodiment of this invention. 
         FIG. 3  is a perspective view of that which is shown in  FIG. 1  from an interior of the doorway, with the door shown exploded away, and showing a privacy door lock with a disabled accessible handle according to one embodiment of this invention. 
         FIG. 4  is a perspective view of the lockset of this invention according to a first embodiment and with a cover plate and handle exploded from a base plate thereof, and showing how the lockset and strike are positioned within a face of one of the jambs of the doorway passage and with a strike thereof mounted within the barn door. This figure also shows an alternative surface mounted barn door privacy lock according to an alternative embodiment shown in detail in  FIGS. 18-23 . 
         FIG. 5  is a front elevation view of the lockset and strike of  FIG. 4 . 
         FIG. 6  is a top plan view of the lockset and strike of  FIG. 4 , and shown mounted within the doorway jamb and barn door, and with the barn door exploded away from the jamb. 
         FIG. 7  is a rear perspective view of that which is shown in  FIG. 5 . 
         FIG. 8  is a front partially exploded perspective view of that which is shown in  FIG. 5 . 
         FIG. 9  is a front elevation sectional view of the lockset and strike of this invention according to a second embodiment, shown mounted within a doorway jamb and barn door, and with portions of the doorway jamb, barn door and lockset cutaway to reveal interior details when a bolt of the lockset has been translated into its deployed position, locking the barn door. 
         FIG. 10  is a front elevation sectional view similar to that which is shown in  FIG. 9 , but with the both of the lockset shown in its retracted position, unlocking the barn door. 
         FIG. 11  is an assembled perspective view of the lockset of  FIG. 9  along with the associated strike and emergency release key. 
         FIG. 12  is a perspective view of at alternative cover plate with a recessed handle for substitution with a disabled accessible handle shown in  FIG. 11 . 
         FIG. 13  is a perspective exploded parts view of that which is shown in  FIG. 11 . 
         FIG. 14  is a perspective exploded parts view of a lockcase portion of the lock as shown in  FIG. 13 . 
         FIG. 15  is a front elevation view of that which is shown in  FIG. 9 , with the bolt shown at least partially extended from its retracted position and into its deployed position. 
         FIG. 16  is a perspective view of the strike according to the embodiment of  FIG. 9 . 
         FIG. 17  is a perspective exploded parts view of that which is shown in  FIG. 16 . 
         FIG. 18  is an exploded perspective view of a lock set according to an alternative embodiment and which is particularly suited for mounting to a surface of a jamb of a doorway. 
         FIG. 19  is a front elevation view of the lock set of  FIG. 18  with a lockcase of the lock shown with a cover removed so that interior mechanism details are revealed. 
         FIG. 20  is an exploded perspective view of that which is shown in  FIG. 18 , but from a reverse perspective, and also showing a base plate of the lock which is mountable to a jamb of a doorway for surface mounting of the lockcase on a surface of the jamb. 
         FIG. 21  is a perspective view of the lock of  FIG. 18 , with the lockcase and internal mechanisms shown assembled together and shown adjacent to a strike, and showing a key for unlocking the lock and exterior of the barn door. 
         FIG. 22  is a front elevation view of the lockcase of  FIG. 21 . 
         FIG. 23  is an end elevation view of that which is shown in  FIG. 22 . 
     
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring to the drawings, wherein like reference numerals represent like parts throughout the various drawing figures, reference numeral  10 ,  110  is directed to a lockset ( FIGS. 1-3 ) that can be mounted within a jamb J adjacent to a doorway passage P passing through a wall W, with a barn door D for closing of the doorway passage P having a strike  80 ,  180  therein for receiving a bolt  70 ,  170  for selectively locking the barn door D. The locks  10 ,  110  are configured to be mounted so that a handle  40 ,  140 ,  240  thereof is accessible through a face F of the jamb J. 
     In essence, and with particular reference to  FIGS. 7 and 8 , basic details of the lockset  10  are described, according to a first embodiment. The lockset  10  includes a lockcase  50  which supports a bolt  70  in a manner allowing the bolt  70  to translate relative to a body  60  of the lockcase  50  (along arrow B) between a retracted position and a deployed position. The lockcase  50  is mounted into a face F of a jamb J adjacent to a doorway passage P ( FIGS. 1-3, 4 and 6 ), that is selectively opened/closed by the barn door D. The lockcase  50  is oriented so that the bolt  70  translates through and away from an exterior E of the jamb J. 
     A handle  40  is coupled to the lockcase  50 , so that when the handle  40  is actuated, such as by rotation (along arrow A of  FIGS. 7 and 8 ), the lockcase  50  causes the bolt  70  to translate. In this embodiment, a base plate  20  and cover plate  30  are mounted into the face F of the jamb J, supporting the handle  40  and securing the lockcase  50  within an interior of the jamb J precisely where desired (and to preferably conceal screws used to mount the handle assembly and lockcase  50 ). 
     A strike  80  is also preferably provided as part of the system of this invention for use with the lockset  10 . The strike  80  provides, at a minimum, a hole passing into the barn door D at an appropriate location so that when the bolt  70  moves to its deployed orientation it extends into the strike  80 . The strike  80  most preferably passes entirely through the barn door D and includes an outer entry through which a key  200  or other structure can be placed to push back the bolt  70  away from its deployed orientation and out of the strike  80 , and so that emergency access can be gained through the barn door D in the doorway passage P. 
     More specifically, and with particular reference to  FIGS. 1-8 , particular details of the lockset  10  and related privacy lock system are described, according to this first embodiment. In this embodiment, a base plate  20  and cover plate  30  are provided separate from each other. However, it is conceivable that a single plate could be provided which merges some or all of the features of the base plate  20  and cover plate  30 . It is also conceivable that the lockcase  50  could be held in place within the jamb J without requiring any base plate  20  or cover plate  30 . In this preferred embodiment, the base plate  20  acts to secure the lockcase  50  and other portions of the lockset  10  in the desired position within a recess formed into the jamb J and inboard of the face E The cover plate  30  attaches to the base plate  20  and provides a clean outer appearance surrounding the handle  40 . 
     The base plate  20  is preferably a rigid monolithic structure, typically formed of a machinable metal, but conceivably formable from casting or injection molded (such as from plastic), or formed of wood, metal or other materials, either molded or machined or otherwise formed. The base plate  20  includes a flange  22  which preferably resides adjacent to the face F and in a plane parallel with a longest dimension of the lockcase of the jamb J. The flange  22  preferably includes holes which receive frame screws  23  which pass through the holes in the flange  22  and then embed into material of the face F of the jamb J adjacent to the recess into which the lockset  10  is placed. 
     The base plate  20  includes a collar  24  extending inwardly from the flange  22  to a floor  26 . The floor  26  is preferably planar in form and parallel with the flange end perpendicular to the collar. Mount screws  25  pass through holes in the floor  26  and thread into standoffs  27  or other portions of the lockcase  50  to secure the base plate  20  to the lockcase  50 . Thus, the base plate  20  is held in position relative to the jamb J by the frame screws  23  and the base plate  20  holds the lockcase  50  to the base plate  20  through the mount screws  25 . 
     Preferably standoffs are provided associated with these mount holes so that the mount screws can either thread into the standoffs rather than into the mount holes directly, or the standoffs can merely act as alignment structures with the mount screws sufficiently long that they pass through the standoffs and into the mount holes of the lockcase for threadable attachment. In one embodiment, the standoffs are two part standoffs with a central cylinder and an outer cylinder for each of the standoffs. The central cylinders have a smaller diameter and are pressfit into the body and extending perpendicularly away from the body and toward the base plate. The outer cylinder standoff portions fit over the central cylinder standoff portions for alignment of the base plate with the body. Then, the mount screws pass through or into the standoffs and threadably attach the base plate securely to the body of the lockcase. In embodiments shown, the standoffs are female threaded elongate cylindrical structures held to the body by fastening to the body or by action of the mount screws passing through the floor of the base plate and into the standoffs, so that the standoffs are configured as she bolts. 
     A hole  28  is formed in the center of the floor  26  which allows portions of the handle  40  to pass through the base plate  20  and engage with a lock mechanism within the lockcase  54 , for actuation of the lockset  10  and movement of the bolt  70  between its retracted orientation and its deployed orientation. The collar  24  is a cylindrical ring shaped structure defining a depth by which the floor  26  is spaced from the flange  22 , with the floor  26  preferably parallel with the flange  22 . The collar  24  in this embodiment also includes female threads thereon which allow for attachment of the cover plate  30  (described below) to the base plate  20  without requiring separate fasteners. However, the cover plate  30  could be attached to the base plate  20  by other means, or the cover plate  30  could be dispensed with entirely. 
     In this embodiment, the cover plate  30  includes an annular shoulder  32  which overlies the flange  22  of the base plate  20 . Inboard of the shoulder  32 , a ring  34  extends cylindrically and generally perpendicular to the shoulder  32 . A shroud  36  surface is located on an inboard end of the ring  34  opposite the shoulder  32 , with the shroud  36  preferably parallel with the shoulder  32 . An outer surface of the ring  34  preferably includes male threads thereon which match the female threads on the collar  24 . Thus, the ring  30  can thread into the collar  24  so the cover plate  30  attaches to the base plate  20 . A hole passes through a center of the shroud  36  of the cover plate  30 , which is aligned with the hole  28  in the base plate  20  and facilitates portions of the handle  40  passing through the cover plate  30  for engagement with the lock mechanism within the lockcase  50  and for actuation of the bolt  70 . 
     In this embodiment, the handle  40  is configured to be a recessed handle. In other embodiments this recessed handle  40  is replaced with a handle  140  ( FIGS. 1, 3, 11 and 13 ) which is disabled accessible but extends somewhat into the doorway passage P in the wall W which is selectively covered by the barn door D ( FIGS. 1-3 ). The handle  40  includes a lever  42  which acts as a preferred form of user engaging portion for the handle  40 . This lever  42  is fixed to a shaft  44 . The lever  42  is preferably linear and elongate and oriented perpendicular to the shaft  44 , with the shaft  44  joined to a midpoint of the lever  42 . The lever  42  is sufficiently low profile that it is recessed at least partially (and preferably entirely) within the ring  34  of the cover plate  30 , inboard of the shoulder  32 . In this way, nothing can easily catch up on the handle  40  when one is walking through the doorway passage P, past the face F jamb J. 
     The shaft  44  is preferably linear and extends along a rotational axis centerline. The shaft  44  preferably includes facets  46  thereon which can assist in having the shaft  44  of the handle  40  engage with a lock mechanism within the lockcase  50 . Alternatively, the shaft  44  can be otherwise affixed to structures within the lockcase  50 . In this preferred embodiment, the shaft has a square cross-section with four flat faceted sides making up the facets  46 . While the handle  40  of this preferred embodiment is shown as a rotating handle which causes the shaft  44  to rotate, it is conceivable that the handle  40  could be replaced with a slide handle which would merely be slid (such as toward or away from the barn door D), and with such a slide handle having a shaft which does not rotate, but rather a shaft that translates linearly (at least somewhat) and with a portion of such a translating shaft most distant from such a sliding handle engaging with the bolt  70  to move the bolt  70  between its retracted and deployed orientations. 
     With particular reference to  FIGS. 3-5 , details of the lockcase  50  are described, according to this first embodiment. The lockcase  50  acts as a lock mechanism between the handle  40  and the bolt  70  to cause the bolt  70  to move between its retracted orientation and its deployed orientation under action of the handle  40 . Because the shaft  44  of the handle  40  is not parallel with the elongate bolt  70 , the lockcase  50  needs to transfer action between the handle  40  and the bold  70  about an angle (typically 90°). 
     The lockcase  50  can have any of a variety of interior configurations to cause rotating motion of the shaft  44  of the handle  40  (arrow A of  FIGS. 5, 7 and 8 ) to be converted into translating linear motion of the bolt  70  (arrow B of  FIGS. 5-8 ). One particular embodiment of such a lockcase  50  is disclosed in detail hereinbelow with respect to a second embodiment alternate lockset  110  ( FIGS. 9-17 ). The lock mechanism for transmitting rotating shaft  44  motion into translating bolt  70  motion, according to this first embodiment ( FIGS. 1-8 ) would be to include a spur gear on a distal end of the shaft  44  and to include a rack gear on a proximal end of the bolt  70 . The spur gear and rack gear would be enmeshed together, so that when the shaft  44  rotates (about arrow A), the spur gear also rotates and causes translation of the rack gear, which in turn causes the bolt  70  to translate (along arrow B). Other lock mechanisms could be similar to those of the second embodiment ( FIGS. 9-17 ) described in detail below. 
     The bolt  70  is a rigid structure of hard material, typically steel, which is caused to translate linearly from a deployed orientation to a retracted orientation, and vice versa, by action of the lock mechanism within the lockcase  50 , which is actuated by the handle  40 . The bolt  70  can include an optional extension  72  with a threaded post  74  which threads into a threaded hole at an end of the bolt  70  (or vice versa). Such an extension  72  can be added if needed to accommodate thicker jambs J with a greater distance to an exterior E of the jamb J. Similarly, the extension  72  on the bolt  70  can be provided if a larger than typical gap exists between the barn door D and the wall W. The extensions can be rotated to provide adjustable bolt length as well. The bolt  70  could have any of a variety of different cross-sectional shapes. In this embodiment, the bolt is shown with a circular cross-section and a cylindrical form having a constant cross-section along its length. Such a contour for the bolt  70  allows it to easily pass into a cylindrical central bore within the strike  80 . 
     The strike  80  could in a simplest form of the invention merely be a hole formed in the barn door D. Most typically, this hole would be cylindrical and having a circular cross-section, similar to a size of the bolt  70 , but typically slightly larger so that alignment of this hole with the bolt  70  can be accommodated. Most preferably, the strike  80  is provided as a hardened structure which supplies this hole for the bolt  70 . The strike  80  at a minimum is a bore extending into an inside of the barn door D. Most preferably this bore passes entirely through the barn door D and out to the outside of the barn door D, so that the bore is in the form of a through bore. In the most preferred embodiment for this strike  80 , an outer sleeve  82  and inner sleeve  84  are provided which threadably attach together and define this through bore passing through the barn door D when the sleeves  82 ,  83  are attached together. Lips  83 ,  85  on the sleeves  82 ,  84  act as stops which abut the outside O and inside I of the barn door D after the sleeves  82 ,  84  have been fully threaded together. In one embodiment, these sleeves  82 ,  84  have a substantially constant circular cross-section, but can be tapered slightly near the lips  83 ,  85 , and in particular adjacent to the lip  85  on the inner sleeve  84 . Such a taper can cause a diameter of the door to be slightly greater at the lip  85 , and help to align the bolt  70  with the strike  80 , especially if the strike  80  is slightly out of alignment with the bolt  70 . In one embodiment, the through bore is not circular cross-section but is taller than it is wide, so that the strike  80  can be more easily placed without requiring precise vertical positioning relative to the bolt  70 , but still providing a tight lock on the bolt  70  in its deployed orientation extending into the strike  80  (to resist door opening motion, such as along arrow C of  FIGS. 1-4 ). 
     With particular reference to  FIGS. 9-17 , details of an alternative lockset  110  according to a second embodiment of this invention are described. The alternative lockset  110  is similar to the lockset  10  described above, except where specifically distinctly described herein. Also, the lockset  110  acts as a privacy door lock mounted at a similar position within a face F of a jamb J of a doorway passage P at a wall W, which is selectively opened/closed by a barn door D (by motion/sliding, along arrow C ( FIGS. 1-3 )). 
     While the barn door D could be carried in a variety of different ways, most typically hangers H ( FIGS. 1-3 ) ride on a rail R above the doorway passage P, with the barn door D suspended from these hangers H. A series of tracks T (or a continuous track) are placed on the floor, in a preferred embodiment, which ride within a groove G in a lower surface of the barn door D, so the barn door D remains parallel with the wall W. The barn door D could be opened either to the left or to the right relative to an exterior of the doorway passage P (see both options together in  FIG. 1 , while typically only one or the other barn door D would be provided and the rail R correspondingly shortened). 
     Typically the barn door D is on an exterior of a room where privacy is desired and outside of where the handle  140  (for the privacy lock associated with the lockset  110 ) is located. Typically, a basic pull is attached to the barn door D (on the inside I, outside O or both), so that the barn door D can be most easily slid upon the rail R (along arrow C of  FIGS. 1-4 ). The lockset  110  can be provided on either a left or right jamb J (viewing the doorway passage P from the outside of the room in which security is desired), and the lockset  110  can engage a strike  80  in the barn door D which is either adjacent to a leading edge or a trailing edge of the barn door D, depending on whether the lockset  110  is mounted into the left jamb J or right jamb J. 
     A bracket  120  ( FIGS. 9-11, 13 and 14 ) is provided (in place of the base plate  20 ) which supports a lockcase  150  within a recess inboard of the face F of the jamb J. The bracket  120  preferably includes frame screws  121  which pass through frame holes  124  and secure the bracket  120  in position within this recess. The bracket  120  includes a front wall  122  and rear wall  123  which preferably have a perimeter shape matching that of the recess (e.g. circular/cylindrical), so that the bracket  120  is further held tightly in position. Most preferably, these walls  122 ,  23  are circular in form so that the recess can be formed by drilling a circular hole into the face F of the jamb J where the lockset  110  is to be accessed by a user. 
     Mount bores receive mount screws  125  which also pass through mount holes  132  in an annular cover plate  130  to allow the annular cover plate  130  to be securely attached to the bracket  120 . A slot  126  is provided between the front wall  122  and rear wall  123  of the bracket  120 . This slot  126  is sized to receive a lockcase  150  therein extending in a lateral direction generally perpendicular to surfaces of the front wall  122  and rear wall  123 , so that the lockcase  150  can be securely held relative to the bracket  120 . The bracket  120  would typically be placed into the recess in the jamb J by passing through the face F of the jamb J, while the lockcase  150  would extend through the exterior E ( FIGS. 1, 4 and 6 ) of the jamb J in a direction extending generally parallel with the face F and inserted into the slot  126  in the bracket  120 . A web  127  spans the slot  126  and joins the front wall  122  to the rear wall  123  so that the bracket  120  is a single rigid construction. A hole  128  passes through the front wall  122  and accommodates a shaft  144  of the handle  140  passing through the front wall  122  of the bracket  120  and to a location in the slot  126  where the shaft  144  can access a lock mechanism within the lockcase  150 . 
     The annular cover plate  130  is similar in many respects to the cover plate  30 , and with screw holes  132  passing therethrough which allows the mount screws  125  to pass through the screw holes  132  and then into the mount screws  125  for the bracket  120 . The mount screws  125  can be tightened to removably secure the cover plate  130  to the bracket  120 . The cover plate  130  is preferably substantially flat and facilitates a handle  140  which is disabled accessible (or, as an alternative, a recessed handle  240  ( FIG. 12 ) can be provided similar to the handle  40  ( FIGS. 4-8 ) including a lever  242 ). The handle  140  includes a lever  142  extending from an outer hub  143 . The shaft  144  extends perpendicularly away from the lever  142  at the hub  143  and sufficiently to pass into the lockcase  150  for engagement of a lock mechanism, in a manner causing the bolt  170  to translate (arrow B of  FIGS. 9 and 15 ) relative to the lockcase  150  when the handle  140  rotates (along arrow A of  FIGS. 9 and 15 ). 
     The lockcase  150  preferably includes a body  160  which contains at least portions of the lockcase  150  therein. The bolt  170  portion of the lockset  110  is preferably contained within a barrel core  152  and barrel cover  153  which also form portions of the lockcase  150 . The body  160  includes port  162  which can receive the shaft  145  of the handle  140  passing into an interior of the lockcase  150 . A pair of housing plates  164  on opposite sides of the body  160  encapsulate the lock mechanism within the lockcase  150  with the port  160  passing into (or through) the housing plates  164 . 
     In this particular embodiment of the lock mechanism of the lockcase  150 , a hub  165  is located within the body  160  and adjacent to the port  162  which has a bore  166  passing therethrough (or just thereinto) which can receive the shaft  144  of the handle  140  therein. This bore  166  has facets which accommodate facets on the shaft  144  so that when the handle  140  rotates, the hub  165  is caused to rotate along with the shaft  144  and handle  140  (along arrow A). 
     The hub  165  preferably has a cam surface  167  on outer portions thereof. This cam surface  167  interacts with a leaf spring  169  adjacent to the hub  165 , so that when prominences on the cam surface  167  pass the spring  169 , some resistance to hub  165  rotation is encountered, and when low portions of the cam surface  167  are adjacent to the spring  169 , little or no resistance to hub  165  rotation is encountered. 
     Furthermore, the hub  165  includes a finger  168  extending radially therefrom. The finger  168  passes through a pocket  178  in an arm  174  which is coupled to the bolt  170 . When the hub  165  rotates, the finger  168  also rotates (arrow A) and, residing within this pocket  178 , causes the arm  174  to translate (arrow B), and to translate the bolt  170  linearly along a central axis of the bolt  170 . A proximal tip  172  of the bolt  170  preferably is recessed in size and resides within a seat  175  in a distal end of the arm  174 . A setscrew  176  joins the proximal tip  172  of the bolt  170  to the arm  174 . Bolts  170  having different lengths can be selected so that the bolt  170  travel distance is in an amount desired. Alternatively, or in addition, the barrel core  152  and barrel cover  153  can be threadably attached together at various different positions amounts to alter a length of the combined barrel core  152  and barrel cover  153  and to further allow for adjusting of the position of the bolt  170 . An annular flange on the barrel cover  153  typically resides against the exterior E of the jamb J and helps to securely hold the lockcase  150  and associated bolt  170  precisely and solidly where desired. 
     Most preferably in this embodiment, strike assembly  180  is provided within the barn door D for receipt of the bolt  170  when it is in its deployed orientation. The strike assembly  180  includes a hollow cylinder  182  with an annular flare  183  on an inner portion thereof adjacent to an inside I of a barn door D (or spaced away by a spacer  197 ). An outer cap  184  preferably attaches to the cylinder  182  (through intermediate structures) and is adjacent to the outside O of the barn door D. A shaft  185  preferably threadably attaches to the outer cap  184  through threads on a head  187  or nut  196  of the shaft  185  which cooperate with threads on an interior of the outer cap  184  to hold the head  187  to the cap. A spring  190  is interposed between a dust cap  192  and a base  194  (to which the shaft  185  can threadably attach in a central collared hole therein), with the base  194  adjacent to the shaft  185  and the dust cap  192  adjacent to the barrel core  152  and barrel cover  153  of the lockcase  150 . Spring  190  causes the dust cap  192  to close off the cylinder  182  within the strike assembly  180 . However, when the bolt  170  strikes the dust cap  192 , the spring  190  is compressed and the bolt  170  is allowed to pass into the cylinder  182 . A key  200  or other elongate structure can pass into the shaft through the outer cap  184  and pass through a central hole in the bolt  185  and abut against the dust cap  192  to push the bolt  170  from its deployed orientation back toward its retracted orientation, such as for emergency access through the doorway passage P after the door D has been opened by sliding (along arrow C). 
     With particular reference to  FIGS. 18-23 , details of an alternative embodiment surface mounted lock set  210  are described. This alternative lock set  210  is also shown in  FIG. 4  as an alternative to the lock set  10  described above. In essence, and with particular reference to  FIG. 20 , basic details of the alternative lock set  210  are described. The lock set  210  includes a lockcase  250  which is mountable to a jamb J of a doorway F in a wall E, which is selectively closed by a barn door Q. The lockcase  250  includes a base plate  220  on one side thereof which is fastened to the jamb J, such as through jamb screws  222  or other wood screws, or other fasteners. A cover  230  attaches to the base plate  220  and contains a mechanism which converts manual actuation of the lock set  210  into a locking and unlocking action of the lock set  210 . This mechanism includes a lever  240  which is actuated by handle to  242 . 
     A shuttle  260  interacts with the lever  240  so that when the lever  240  is moved, the shuttle  260  is also moved. A bolt  270  is connected to the shuttle  260 , with the bolt  270  moving between a retracted position more fully contained within the lockcase  250 , and a deployed position extending out of the lockcase  250  and at least partially into a strike  280  in the barn door Q. This strike  280  can be similar to the strike  80  described in detail above, except that a size and shape of a hollow core thereof can be modified to receive a uniquely shaped bolt  270  disclosed in this embodiment. 
     More specifically, and with particular reference to  FIG. 20 , details of the base plate  220  are described, according to one embodiment of this surface mounted lock set  210 . The base plate  220  is a rigid planar structure with a series of holes therein which can receive wood screws or other jamb screws  222  passing therethrough. Heads of these jamb screws  222  remain on one side of the base plate  220  while threads on a shaft of the jamb screws embed into the jamb J. Preferably four such jamb screws  222  are provided through four holes located close to corners of the base plate  220 . While screws  222  provide a preferred form of fastener for holding the base plate  220  to the jamb J, other fasteners could alternatively be utilized, including adhesive, or mechanical fasteners. The base plate  220  is preferably rectangular in form with a similar perimeter size to that of the overall lockcase  250 . 
     The base plate  220  includes tabs  224  extending perpendicularly away from the base plate  220 . These tabs  224  which include holes therein, can receive screws  233  which hold the cover  230  to the base plate  220  through the tabs  224 . These tabs  224  are preferably located near corners of the base plate  220 , with two of the tabs  224  oriented within a vertical plane and two of the tabs  224  oriented in parallel and spaced horizontal planes. Holes in a perimeter skirt  234  of the cover  230  are strategically located to match locations of the tabs  224  so that screws  233  can pass through these holes in the perimeter skirt  234  of the cover  230  for holding of the cover  230  onto the base plate  220 . 
     The base plate  220  also preferably includes a hub hole  225  which supports a hub  226  which assists in rotationally supporting the lever  240  within an interior of the lockcase  250 . This hub  226  is shown in both  FIG. 18  and  FIG. 20 , as well as somewhat within  FIG. 19 . The hub  226  is a rigid structure preferably provided separate from the base plate  220 , but which could be formed with the base plate  220 . The hub  226  can be configured to rotate relative to the base plate  220  or to be fixed relative to the base plate  220 . 
     The hub  226  includes a boss  227  extending axially along a central axis of the hub  226  and having a circular cross-section and generally cylindrical form. A flange  228  is also provided on the hub  226  which is annular in form and sized to reside within the hub hole  225 . A fastener  229  passes through a hole along a central axis of the hub  226  and allows for the hub  226  to be fastened to a standoff  235  extending from an interior side of a face  232  of the cover  230 . This fastener  229  is a screw in this embodiment, with the standoff having a hole centrally located therein with female threads. 
     With continuing reference to  FIGS. 18 and 20 , as well as  FIGS. 21-23 , details of the cover  230  are described. The cover  230  along with the base plate  220  provides an enclosure of the lockcase  250  to contain a mechanism which converts movement of a handle  242  of the lever  240  into movement of the bolt  270 . The cover  230  is preferably a rigid monolithic structure fastenable to the base plate  220 , such as through the screws  233  passing through holes in the perimeter skirt  234  of the cover  230  and then threading into the tabs  224  of the base plate  220 . As an alternative, other forms of fasteners could hold the cover  230  to the base plate  220 . The base plate  220  and associated portions of the lock set  210  could be on either the left or right side of the doorway, and on a jamb closer to a leading edge of the barn door or closer to a trailing edge of the barn door. Wherever the base plate  220  and associated portions of the lock set  210  are located, the strike  280  would be correspondingly placed so that when the strike  280  is aligned with the lock set  210 , the barn door Q is in a closed position blocking the doorway F (see  FIGS. 1-3 ). 
     The cover  230  preferably has a rectangular form for a face  232  thereof which is similar to an outline of the base plate  220 . The perimeter skirt  234  extends perpendicularly away from a plane in which the face  232  is oriented, and extending toward the base plate  220 . The cover  230  includes troughs  236  within an inner surface of the face  232  which interact with a detent structure on part of a mechanism associated with the bolt  270 , so that the bolt  270  has a tendency to be biased toward remaining in either a retracted position or a deployed position for the bolt  270 . The cover  230  also includes a port hole  238  in a portion of the perimeter skirt  234 , which allows the bolt  270  to extend out of an interior of the lockcase  250  and toward the barn door Q, for selective locking thereof. 
     With particular reference to  FIGS. 18-20 , details of the lever  240 , shuttle  260  and bolt  270 , together comprising a mechanism within the lockcase  250 , are described, according to this alternative embodiment. While the lever  240  could as an option be a translating structure, the lever  240  most preferably is a pivoting structure supported by the lockcase  250 . In particular, the lever  40  includes a handle  242  at a distal end of an arm  244  extending from a wheel  246  adjacent to a rotational axis of the lever  240 . The wheel  246  has a central hole  248  aligned with the hub  226  and with a central axis of the hub  226 . The wheel  246  include slots  247  extending radially within the wheel  246 , with at least one of the slots  246  interacting with a post  261  on the shuttle  260  to cause the post  261  and associated shuttle  260  to translate when the lever  240  rotates. 
     A distal tip of the arm  244  of the lever  240  can either include the handle  242  or a large handle  243 . The large handle  243  can allow for disabled access, in that one with limited dexterity can still manually manipulate the large handle  243  to cause the lever  240  to rotate (along arrow α of  FIGS. 18, 19, 21 and 22 ). The arm  244  extends radially away from the wheel  246  with the arm  244  and wheel  246  preferably either affixed to each other or formed from a monolithic rigid piece of material. The lever  240  is largely planar and thin, with the arm  244  extending out of a slit between the cover  230  and the base plate  220 , so that the handles  242 ,  243  can be located outside of the lockcase  250  for manual access, while other portions of the lever  240  including most of the arm  244 , remain inside the lockcase  250 . 
     While the shuttle  260  could conceivably rotate, most preferably the shuttle  260  translates within the lockcase  250 . The shuttle  260  is a rigid structure which preferably is formed having two horizontal extending fingers  262  adjacent to upper and lower portions of the lockcase  250 , and with a gap  263  between the fingers  262 . The gap  263  allows portions of the hub  226  to reside therein, and to help to keep the shuttle  260  translating horizontally linearly within the lockcase  250 . 
     A post  261  extends laterally and horizontally from one of the fingers  262  and resides within one of the slots  247  in the wheel  246  of the lever  240 . In the embodiment depicted, the post  261  extends from the upper finger  262 , and the post  261  is engaged by an upper one of the slots  247  in the wheel  246 . However, the post  261  and slots  247  could be adjusted so that the post  261  is in the lower one of the fingers  262  and engages with the lower one of the slots  247  within the wheel  246 . 
     A prow  264  of the shuttle  260  joins the two fingers  262  together. This prow  264  includes a bore  265  extending horizontally thereinto, and which receives a neck  272  of the bolt  270  therein. A set pin  266  passes laterally through the shuttle  260  and intersects into the bore  265 , with such a set pin  266  also residing within a side hole  274  in the neck  272  of the bolt  270 , so that the set pin  266  can hold the neck  272  of the bolt  270  within the bore  265  in the prow  264  of the shuttle  260 . As an alternative, the bolt  270  could be formed with the shuttle  260 , or otherwise coupled to the shuttle  260 . 
     The shuttle  260  has a lateral surface facing an inside of the face  232  of the cover  230  which includes a pit  267  extending thereinto. This pit  267  supports a compression spring  268  with a detent ball  269  on an end of the spring  268  opposite the pit  267 . The spring  268  pushes the detent ball  267  against the inside of the face  232  of the cover  230 . Two troughs  236  in the inside of the face  232  of the cover  230  are strategically positioned so that the detent ball  269  resides within one of the troughs either when the bolt  270  is in a retracted position or when the bolt  270  is in a deployed position. The detent ball  269  and spring  268  thus cause the bolt  270  to be biased toward remaining in either the retracted position or the deployed position, rather than any intermediate position. The lock set  210  would thus tend to maintain a selected position unless affirmative force is applied, such as through the handle  242 ,  243  of the lever  240 , to cause the lever  240  to rotate (along arrow α), and then in turn causing the shuttle  260  to translate (along arrow β of  FIGS. 18, 19, 21, 22 ). 
     The bolt  270  is a rigid structure which is preferably formed separate from the shuttle  260  but affixed to the shuttle  260 , such as through the set pin  266  and side hole  274  in the neck  272  of the bolt  270 . The bolt  270  could be circular in cross-section, with a generally cylindrical form, but is depicted herein with planar lateral surfaces  276  and with curving upper and lower surfaces between these lateral surfaces  276 . The bolt  270  extends to a tip  278  which is preferably flat and extends most deeply into the strike  280  when the bolt  270  is in a deployed position. 
     The bolt  270  can be returned from a deployed position to a retracted position by placing of a key  200  through the strike  280  from an exterior side of the barn door Q, applying sufficient force to overcome resistance of the detent ball  269  and to cause the shuttle  260  to translate (along arrow β) and to in turn cause the lever  240  to pivot along arrow α. Thus, the lock set  210  acts as a privacy lock, in that the lock set  210  can be unlocked by simply placing the key  200  or any thin elongate structure through the exterior hole passing into the strike  280 , to unlock the privacy door lock. The strike  280  can be modified to have a shape which can accommodate an alternate shape of the bolt  270 . 
     This disclosure is provided to reveal a preferred embodiment of the invention and a best mode for practicing the invention. Having thus described the invention in this way, it should be apparent that various different modifications can be made to the preferred embodiment without departing from the scope and spirit of this invention disclosure. When structures are identified as a means to perform a function, the identification is intended to include all structures which can perform the function specified. When structures of this invention are identified as being coupled together, such language should be interpreted broadly to include the structures being coupled directly together or coupled together through intervening structures. Such coupling could be permanent or temporary and either in a rigid fashion or in a fashion which allows pivoting, sliding or other relative motion while still providing some form of attachment, unless specifically restricted.