1862 London Exhibition: Catalogue: Class V.: Ordish and Le Feuvre
From Graces Guide
1284. ORDISH and LE FEUVUE, 18 Great George Street, Westminster.
Ordish's patent elastic chairs and sleepers.
This system of fastening rails in chairs or sleepers is by utilizing the elastic power of the cast iron in the disposition of the metal for this purpose. The cast iron keys and jaws are provided with obtuse angled ratchets, and when driven in, the jaws are sprung asunder, thus holding and securing the rail, as the keys cannot come out, or be driven out, without springing the jaws further asunder.