Point detection and indication with latch out means

A point detection and indication apparatus for an electric motor driven switch machine having an activation means, comprising:

• a point detector bar having an outer surface;
• a point detector cam positioned on said outer surface;
• a pair of cam followers, each of said cam followers having a first end adjacent to said outer surface and a second end, wherein said second end is positioned at a first position when said first end is positioned adjacent said point detector cam, and said second end is positioned at said second position when said first end is not positioned adjacent to said point detector cam;
• a link arm directly linking said second ends of said pair of cam followers;
• a pair of latch retainers positioned on said link arm;
• a pair of latch bars positioned about said link arm between said latch retainers, each of said latch bars having a contact end;
• each of said latch bars having a first latch position such that said contact end does not contact said latch retainer, and a second latch position such that said contact end contacts said latch retainer;
• a latch opener cam having an unlock position for positioning said latch opener cam between said latch bars and said latch bars at said first latch positions, and a lock position for positioning said latch opener cam to one side of said latch bars and said latch bars at said second latch positions;
• and
• a latch out switch, responsive to the activation means of the switch machine, for terminating the operation of the switch machine when said latch opener cam is at said lock position and both of said cam followers are at said second position.

A point detection and indication apparatus for an electric motor driven switch machine, comprising:

• a point detector bar having cam means;
• a pair of follower means, each having a roller end which is contiguous to said point detector bar and a non-roller end;
• switch means controlled by said pair of follower means;
• and
• means for latching out said switch means responsive to the position of said rollers to said cam means, including means for holding said non-roller ends at a predetermined distance away from each other, wherein said holding means comprises an arm that directly links said non-roller ends to each other.

A point detection and indication apparatus for an electric motor driven switch machine, comprising:

• a point detector bar having cam means;
• a pair of follower means, each having a roller end which is contiguous to said point detector bar and a non-roller end;
• switch means controlled by said pair of follower means;
• means for latching out said switch means responsive to the position of said rollers to said cam means, including means for holding said non-roller ends at a predetermined distance away from each other;
• and
• a lock bar positioned substantially parallel to, and that correspondingly moves with, said point detector bar, wherein said switch means indicates a problem condition when said lock bar is out of correspondence with said point detector bar.

A point detection and indication apparatus for an electric motor driven switch machine, comprising:

• a point detector bar having an outer surface and a point detector cam located on said outer surface;
• first and second cam followers each having a first follower end that is contiguous to said outer surface and a second follower end, each of said cam followers having a first follower position when said first end portion is positioned adjacent said point detector cam and a second position when said first end portion is not positioned adjacent said point detector cam;
• a first switch arm disposed on said first cam follower and a second switch arm disposed on said second cam follower, each of said switch arms having a distal end extending from said second end portion of a respective one of said cam followers;
• and
• a switch assembly, having a pair of switching cams for receiving said distal ends of said switch arms, for indicating a problem condition when said contacts are switched within a particular range of indicating positions,
• wherein each of said distal ends of said switch arms extend beyond a front vertical plane of said switch assembly.

A point detection and indication apparatus for an electric motor driven switch machine, comprising:

• a point detector bar having an outer surface and a point detector cam located on said outer surface;
• first and second cam followers each having a first end that is contiguous to said outer surface and a second end;
• a first switch arm disposed on said first cam follower and a second switch arm disposed on said second cam follower, each of said switch arms having a distal end extending from said second end of a respective one of said cam followers;
• and
• a switch assembly having a pair of rotatable shafts substantially perpendicular to said distal end of said switch arms and a switching cam disposed at an end of each rotatable shaft, wherein said distal ends of said switch arms are capable of rotating said switching cams and said switch assembly indicates a problem condition when said switching cams are rotated within a particular range of angular rotation.