||Jumbo (3 ton)
||Cranes, Self Mobile, No. 2
|Date of picture
(TAYLOR JUMBO 3 TON SLEWING)
For general handling of heavy or bulky stores at depots or in the field. It may also be used for pole erection or recovery work.
The power unit is either a Ford or a BMC diesel engine mounted centrally on a special chassis. The superstructure is of the articulated jib type mounted on a slewing ring. The arc of slewing is limited to 220°. Normal road vehicle controls are provided for road travel and the maximum legal road speed is 12 m.p.h. A P.T.O. is provided to a hydraulic pump for providing the hydraulic power to operate all the crane motions. An auxiliary hydraulic system provides for power assisted steering. An enlarged tool box is provided at the rear of the vehicle to accommodate a lifting beam, a timber grab, a chain sling with claw hooks and a chain sling 4 ft. The cab accommodates the driver and one passenger. The crane controls are operated from the driving Seat. Three load hooks are provided, one 3 ton hook in fixed position, one 2 ton hook capable of being propelled along the front jib for a distance of 5 ft. approx., and one fixed hook on end of jib for lifting a load of 17 cwt.
(a) 3 tons at l0ft. 6 in. radius (with jib horizontal) - maximum height of hook (with jib raised) 14 ft. 6 in.
(b) 2 tons at 12 ft. 2 in. radius - maximum height of hook 15 ft. 10 in.
(c) 1 ton at 17 ft. 2 in. radius - maximum height of hook 19 ft. 9 in.
(d) 17 cwt. at 18 ft. 8 in. radius - maximum height of hook 22 ft. 6 in.
Overall length 25 ft. 7 in. with jib in travelling position
Overall width 7 ft. 5 in.
Overall height 8 ft. 8 in. with jibs in lowest position.
10 tons 2 cwt.
The jib can be lowered until the 17 cwt. hook touches the ground.
On later models the last 6 foot of the jib folds back on it's
self, thus reducing the length of jib when travelling.