A device for lifting one corner of a car to change a tire. Older cars used a long bar which fitted into a base. A device on the long bar had a hook which was placed in a strategic place on the vehicle. A lug wrench was inserted into the other end of the device and used to move the device up the long bar thus lifting the car.
BUMPER JACK
Meaning of BUMPER JACK in English
English dictionary of automotive terms. Английский словарь автомобильных терминов. 2012