A Collapsible Ramp for Wheel Jacking rrnli raise by hand,
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even with the aid of an hydraulic jack, 1 the wheel of a heavy laden lorry is a laborious operation. When a big-section tyre is flat the distance the axle needs to be lifted is considerable, and the work is often done under difficult and possibly even dangerous conditions.
A device, well-named the Jackramp, is shown in an accompanying sketch, by which engine power can be employed for the weight-lifting necessary. Virtually, the device is a collapsible ramp. In the extended position it is placed in front of or behind the wheel it is desired to remove. Then the vehicle is driven, forwards or rearwards, until the wheel has climbed the ramp. Next, the ordinary jack, or suitable packing, is placed under the axle ready to take the weight, and to hold the wheel clear when the Jackramp is withdrawn.
It will be observed from the sketch that the device is retained in the extended position by a pair of links, each provided with a slot which engages a nut or peg on the hinged foot.
By lifting, with a lever of some description, the end of the link, the pegs are released and the device collapses, so that it can be pulled out of the way while the wheel is changed.
Although extremely simple and inexpensive to produce, it is an efficient labour saver, and we anticipate that, for " this reason, drivers of commercial vehicles will value it, despite its hulk, as an addition to their tool kits. It is made by Messrs. Nevstane Fitments, Aldwych House, Aldwych, London, W.C.2.