Ifferential Lock On Iwo-speed Axle

3 enable a vehicle fitted with a twospeed axle to extricate itself from aery ground is the object of a differal-gear locking mechanism shown in .nt No. 916,748. (Eaton Axles......

Roved Bus Door Iign

4 improved design of bus door, said to give the driver better visibility to nearside and to impose minimum ing on the operating gear, is des;c1 in patent No. 918,201. (Walter......

Tractor-trailer Coupling Joint

PA A SIMPLE but effective method of allowing relative movement between a tractor and a trailer is shown in patent No. 910,660. (Robert Hudson Ltd., Raletrux House, Meadow Lane,......