Brake head and brake shoe assemblage for composition brake shoes

Claim 1

A BRAKE HEAD AND BRAKE SHOE ASSEMBLAGE FOR USE IN A RAILWAY CAR BRAKE SYSTEM, SAID ASSEMBLAGE COMPRISING A BRAKE HEAD AND A COMPOSITION BRAKE SHOE ADAPTED TO BE SECURED TO THE BRAKE HEAD, SAID BRAKE HEAD BEING CHARACTERIZED IN THAT IT HAS A TANG EXTENDING INTO THE SLOT FORMED BETWEEN A PAIR OF LATERALLY SPACED END TOES LOCATED AT EACH END OF THE BRAKE HEAD, AND SAID COMPOSITION BRAKE SHOE BEING CHARACTERIZED IN THAT IT HAS A BACKING PLATE HAVING AT EACH END THEREOF A PAIR OF LATERALLY SPACED LONGITUDINALLY EXTENDING GUIDE MEMBERS AND A PAIR OF TRANSVERSELY EXTENDING STOP MEMBERS, SAID LONGITUDINALLY EXTENDING GUIDE MEMBERS AND SAID TRANSVERSELY EXTENDING STOP MEMBERS BEING POSITIONED SUCH THAT UPON INSTALLATION OF SAID COMPOSITION BRAKE SHOE ON SAID BRAKE HEAD, SAID LONGITUDINALLY EXTENDING GUIDE MEMBERS STRADDLE SAID TANGS ON SAID BRAKE HEAD FOR PREVENTING LATERAL DISPLACEMENT OF SAID COMPOSITION BRAKE SHOE ON SAID BRAKE HEAD AND EACH OF SAID TRANSVERSELY EXTENDING STOP MEMBERS ABUTS THE OUTER END OF A RESPECTIVE END TOE OF SAID BRAKE HEAD, FOR PREVENTING LONGITUDINAL DISPLACEMENT OF SAID COMPOSITION BRAKE SHOE ON SAID BRAKE HEAD, SAID GUIDE MEMBERS BEING RELATIVELY POSITIONED UPON SAID BACKING PLATE TO BE RECEIVED WITHOUT OBSTRUCTION BETWEEN THE LATERALLY SPACED END TOES OF A STANDARD BRAKE HEAD INTENDED TO RECEIVE A STANDARD CAST IRON BRAKE SHOE, SAID COMPOSITION BRAKE SHOE BEING FURTHER CHARACTERIZED IN THAT SAID LONGITUDINALLY EXTENDING GUIDE MEMBERS ARE EACH IN THE FORM OF A RELATIVELY THIN RECTANGULAR STRIP SECURED IN SUBSTANTIALLY PERPENDICULAR RELATION TO THE BACKING PLATE, AND ARRANGED IN PARALLEL RELATION TO EACH OTHER SYMMETRICALLY ON OPPOSITE SIDES OF THE LONGITUDINAL CENTER LINE OF THE BACKING PLATE IN A MANNER TO FIT WITHIN THE END SLOT BETWEEN THE END TOES AT EACH END OF A STANDARD BRAKE HEAD.