Car retarder shoe structure
OwnerWestley C. Mullerinventor
Life of this patent
Estimating the term…
Abstract
A car retarder shoe structure in which a removable shoe member is attached to the brake beam of a railway car retarder by means of bolts. Each bolt is tapered and the corresponding hole in the shoe is likewise tapered. The tapered portion of the bolt is at least as long as and conforms substantially to the taper of the hole. It is the tapered surface of the bolt shank seated against the tapered hole which serves to hold the shoe in place. The bolt head is shaped or contoured to contact a portion of the shoe and prevent rotation while the nut is being installed. Such structure permits the shoe to remain firmly attached to the brake beam under prolonged or excessive wear conditions caused by the retardation of passing car wheels, even though all or a substantial portion of the shoe and the bolt head are worn away.
Claims10
In a car retarder wherein a wheel-engaging shoe member is detachably mounted on a support member by fastening means and includes a protruding rib having a wheel-engaging surface, the improvement comprising the shoe member having a tapered hole therethrough, said hole being proximate to said protruding rib, and fastening means comprising a bolt disposed in said hole, said bolt having an exposed head at one end thereof and a tapered shank portion adjacent said head, the taper of said shank portion conforming substantially to the taper of said hole, said bolt head protruding from and being outwardly spaced from said hole said exposed and protruding head being shaped to contact said protruding rib in said shoe member to prevent rotation of said bolt when disposed in said hole.
In a car retarder with a brake beam having an elongated shoe detachably mounted thereon by fastening means engagable with said brake beam, said shoe having a wheel-engaging rib, a tapered hole through said shoe proximate to said rib in which said fastening means is disposed, said fastening means comprising a bolt having an exposed head at one end thereof and a tapered shank portion adjacent said head, the taper of said shank portion conforming substantially to the taper of said hole, said bolt head protruding from and being outwardly spaced from said hole said exposed head being shaped to contact said rib of said shoe to prevent rotation of said bolt, and nut means securing said bolt to said shoe and brake beam, whereby said bolt engages said brake beam, said bolt retaining said shoe on said brake beam by means of said tapered shank portion of said bolt seating against the taper of said corresponding hole through said shoe.
Dependencies are inferred from the claim text.