Abstract: A railroad frog positioning and reconditioning table features a table in the form of a rotating I-beam structure having an integral tube set off-center and resting in two pillow block bearings attached to pedestal that are bolted to a concrete floor at opposite ends of the table. One pedestal holds a worm gear reducing case that allows the table to rotate by the turning of a 12 inch hand wheel. The bottom of the table is capable of containing counterweights that, along with the off-center spacing of the support shaft, enable the table to become counterbalanced when a frog is secured to the top of the table. This counterbalance allows the table to be rotated with a minimum of effort. The size of the weights is designed to allow ample counterbalance for a large variety of frog sizes. Multiple pairs of ears are attached to the sides of the table integrated with stiffener supports to provide tie-down points for creating the proper frog deflection.

Abstract: A railroad frog positioning and reconditioning table has an I-beam structure designed to support one or more frogs to enable welding repair of defective running surfaces. After defects are repaired with welding material, a portable frog milling machine table is attached to the frog table for positioning of a milling head over the frog which remains on the frog table. The milling head is connected to a support base that traverses the angular iron framework forming the milling machine table through guided sliding movement powered by a rack and pinion drive mechanism. Thus, the milling head cuts the running surface to original profile and an end mill cutting head cuts the frog flange ways to proper profile. The milling head cutting path is movable into straight and angularly offset positions to enable proper contouring.