electric cable reels, lead lamps and loading ramps.
One version of the trailer is mount- ed on four-wheel independent suspen- sion using bonded rubber suspension units. Steering has been incorporated
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Tecalemit maintenance trailer.
into the design of the front end. Rear wheel braking is by means of 10 in. diameter over-run brakes. The unit is covered by a pvc coated nylon canopy.
TRENCHER
Once staked and set, the F series Scoop trencher operates automatically to cut trenches in standard sizes of 4 or 6 in. wide by 21 to 39 in. deep.
Forward motion is provided by a built-in winch. Traction is said to be positive even in bog conditions, and five variations in winch speeds, up to 100 yd. per hour, are possible to suit varying soil conditions. A remote throttle control is also fitted to allow a greater choice of winch/chain speeds to be selected.
Trenching is carried out by the cut- ting action of a chain, with a breaking load of 46,000 lb., which is lowered to the required depth by means of the digging boom. Soil removed from the
F series Scoop trencher
trench is broken down to a fine tilth and deposited on one side by a worm augur, simplifying back filling and leaving one side free for access.
The machine is powered by a
Far East BUILDER, December 1970
Briggs and Stratton petrol engine of 8 or 10 h.p. Both front wheels have separate height adjustment for work- ing uneven sites, and double rear wheels are fitted to prevent trench col- lapse in soft conditions.
The makers are Atkins Fulford Ltd., Sudbury, Suffolk, UK.
VIBRATING SCREED
Stow Manufacturing Co., 627 Shear Street, Binghampton, New York, have developed a
developed a one-man vibrating screed with optional belt and pulley guard. It is suitable for striking off all types of concrete slabs such as floors, bridge decks and street sec- tions.
The new model Porto-Screed has an adjustable amplitude feature and vibrates at a rate of 4300 vibrations a minute. The vibration is transmitted to the beam and in turn to the concrete causing the fines to rise so that one
Porto-Screed
man can guide it and strike off the slab. The amplitude of vibration can be dialed to any position from high to low by turning the eccentric on its axis and locking it in place.
The frame of the Porto-Screed is designed to clamp quickly to 2 x 4 or 2 x 6 beams. With two beams, the first strikes off the concrete and the second gives the final finish. The unit is powered by a Briggs & Stratton engine or 1 h.p. electric motor.
BACKHOE
A hydraulic backhoe attachment for its Japanese-built Michigan Model 75 tractor shovel is now available from distributors of Clark construction machinery.
The BH30-831 backhoe has a standard bucket size of 5.3 cu.ft. Lift. ing capacity is 1850 lb. and digging force 5512 lb. The new attachment, minus bucket, weighs 3780 lb., has a digging depth of 120 in. and a reach of 187 in. The bucket can be rotated 180 degrees.
Stabilisers on the backhoe have a 7 ft. span, a 21⁄2 ft. lateral range and a reach below grade of 171⁄2 in. When folded for travel the attachment mea- sures 128 3/4 in. from ground to top
Michigan BH30-831 backhoe
of the backhoe and 884 in. wide. With the attachment the tractor shovel has a minimum turning radius of 22 ft. 5 in. and a minimum clearance of 14 in.
COMPACTOR
The Rampactor impact compactor can be supplied with a 4 h.p. Holman air motor or a Sach L75 two-stroke petrol/oil engine.
For air operation, it requires a sup- ply in the range of 60-65 c.f.m. at 80 p.s.i. This gives a performance of up to 600 ft. lb. per sec., with a maximum lift of 22in., for a compaction rate of 120-185 sq.yd. per hour.
Suitable for trench reinstatement, as well as for compaction of hard core, tarmac and all types of soil, the mach- ine stands 3ft. Sin. high, incorporates
Allam Rampactor
an 11 x 153⁄4in. cast-steel shoe and weighs 175lb. An absence of engine fumes enables it to be used safely for work on small areas in confined
spaces.
The makers are EP. Allam & Co. Ltd., Leigh-on-Sea, Essex, UK.
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