Abstract: A drawbar for a vehicle coupler includes a drawbar tail, the drawbar tail configured at a distal end for connecting to a vehicle, and at a proximal end for engagement with a drawbar body; a drawbar body, the drawbar body configured for receiving a draft gear, the drawbar body further defining a path for movement of the proximal end of the drawbar tail. The drawbar body and drawbar tail are connected by a releasable connection. A block inserted via an opening in the drawbar body blocks the path to restrain movement of the drawbar tail during towing, after release of the releasable connection.

Abstract: An emergency release mechanism for a railway drawbar, which reduces stress in two piece machine bolts inserts in emergency release mechanisms, includes a two sided threaded stud which screws into a release rail using one of the threaded stud ends, passes through a drawbar body, and is secured to the drawbar body by a nut screwed onto the other threaded stud end.

Abstract: An emergency release mechanism for a railway drawbar, which reduces stress in two piece machine bolt inserts in emergency release mechanisms, includes a two sided threaded stud which screws into a release rail using one of the threaded stud ends, passes through a drawbar body, and is secured to the drawbar body by a nut screwed onto the other threaded stud end.

Abstract: A vehicular coupler comprises a head for coupling to an opposed, generally identical coupling head of a vehicle for mechanically connecting two vehicles together. Such coupler includes a beam member for connecting to the underside of one of such vehicles. A housing is slideably connected to the beam member and a cushioning device is connected to the coupling head. The coupling head has a rearward extension located in the housing. Primary shear bolts or pins extend through walls of the housing and into the rearward extension of the cushioning device. Secondary shear bolts or pins extend through the beam member and into the housing. Retaining bolts are secured to the housing and have upper portions located above an upper surface of the housing. A longitudinal relief area is provided in the beam member, with the upper portions of the retaining bolts being located in the relief area.

Abstract: An uncoupling cam is incorporated into a hook-type coupler. Couplers of this variety are typically found on railway transit vehicles, one hook-type coupler being fixed to each end of each transit vehicle. Moving two transit vehicles toward each other so that their ends come together will eventually cause their respective hook-type couplers to couple together automatically. It is in this manner that a passenger transit train is formed with each of its vehicles being mechanically linked to an adjacent vehicle. Each hook-type coupler has a pivotally mounted hook member that can be pivoted between a latch position and an unlatch position. A biasing means inside the hook-type coupler is used to keep the hook member normally biased to the latch position. The uncoupling cam features a solid body and a roller. The body of the cam has a uniform polygonal cross-section to an edge of which the roller is rotatably secured. The roller is adapted to rollably engage a surface of the hook member.

Abstract: A hook-type coupler for attachment to an end of a railway transit vehicle for joining adjacent ends of a pair of railway transit vehicles wherein the hook-type coupler has a hook member pivotally mounted therein being pivotal between a latch position and an unlatch position and adapted to engage a second pivotally mounted hook member in a second hook-type coupler of compatible design and includes an uncoupling cam for forcibly pivoting the hook member to the unlatch position and a roller rotatably secured to the uncoupling cam to rollably engage a surface of the hook member when the uncoupling cam is activated through a partial rotation thereby pivoting such hook member to the unlatch position without significant sliding frictional engagement between the uncoupling cam and the hook member.