Resources Contact Us Home
Method of manufacturing concrete sleeper blocks

Image Number 3 for United States Patent #4495127.

A method of manufacturing railway switchpoint concrete sleeper blocks of varying lengths and having different number of attachment means located in mutually different positions for the attachment of rails. A plurality of steel matrix plates 102 whose respective lengths correspond to the desired lengths of the various sleeper blocks and which exhibit detachably mounted dowels 109 are placed end to end in an elongate mould bed with the dowels facing upwardly, whereafter reinforcing rods 5 are tensioned and concrete is poured into the mould bed and permitted to harden. The thus formed coherent concrete body is then removed from the mould and the matrix plates removed, with the dowels remaining cast in the concrete block. The concrete body is then cut into sleeper blocks of desired length. The dowels are accurately mounted in predetermined positions in frame members 111 affixed to the matrix plates. Upon casting and hardening of the sleeper blocks the frame members are disengaged from the plates and the in-cast dowels for renewed use in a subsequent casting operation.

  Recently Added Patents
Configuration and incentive in event management environment providing an automated segmentation of consideration
Method and system for detecting data modification within computing device
Distortion compensation device, distortion compensation method, and radio transmitter
Antenna for an automobile
Method of using nutritional compounds dihydroquercetin (taxifolin) and arabinogalactan in combination with dihydroquercetin (taxifolin) to reduce and control cardiometabolic risk factors assoc
Identifying media content in queries
Method for producing coated steel sheet
  Randomly Featured Patents
Pressure buffer, ink-jet head, and ink-jet recording apparatus
Fluid connector and biopsy system including same
Device and method for controlling tape travelling speed and medium for recording its control program
Backside lithography and backside immersion lithography
Catalyst and method for producing carbonic diesters
Fluorinated aromatic polyenes
Blood pressure cuff with integral acoustic pickup cup
Automatic or semiautomatic rifle with folding stock
4-(2-amino-1-hydroxyethyl)oxazoline derivative and method for producing same
Production method and apparatus for compound oxide powder