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New Trend; Sweeping Suction
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DURING the past decade consistent advances in mechanization have been apparent at each of the successive vehicle demonstrations held in connection with the annual conferences of the Institute of Public Cleansing. Whilst it is unlikely that there will be many outstanding changes to be seen in Margate next week, the move towards the incorporation of labour-saving devices continues. Apart from making for greater efficiency, technical progress and the gradual evolution of the modern cleansing operator, in the place of the old-time dustman, is giving work in public cleansing a much more attractive "image ".
Recent alterations in the regulations regarding the employment of self-propelled cleansing equipment on footpaths, plus the increasing area of traffic-free precincts laid down in new building projects, have prepared the way for a closer approach to the smaller sweepers, several of which will be exhibited.
A new suction sweeper for full-scale road use is to make its appearance for the first time. This is a product of the Yorkshire Patent Steam Wagon Co. and the prototype is mounted on a Karrier 7-ton chassis with a wheelbase of 9 ft. 7 in. so that a high degree of manceuvrability is provided.
• A most valuable feature of this design is the independent power unit for fan operation. With this in use constant suction is achieved instead of the fan speed being related to the road speed. The suction refuse container is circular in section and a positive discharge system expedites• unloading. Scarifying
brushes are arranged to give a 4-ft. sweep, the floating nozzl maintaining suction whatever the surface variations.
A Karrier-Yorkshire 1,000-gal, gully and cesspool emptie will have this company's redesigned liquid-cooled air pum, which incorporates non-drip seals. The changeover valve als appears in a new form and is now treated with soli lubricant. A servo crane arm and suction valve, t save fatigue when in continuous operation, are no standard on this machine, Other gully emptiers wi take the form of the Yorkshire 480-gal., on a Karrie Bantam chassis and the 450-gal. trailer unit, th latter being appropriate for districts where use intermittent. It can be used in conjunction with an standard tractor equipped with hydraulic pump an reservoir. The Yorkshire Litterlifter, with a refus capacity up to 20 cwt., will also be shown.
A large capacity body is employed on the currer model of the Johnston suction sweeper, a machin that is in extensive use throughout the country. Th Mk. 11H, which will be available at Margate, mounted on an Austin FHK chassis which has a underfloor engine, the advent of which has facilitate the introduction of improvements to the operatin controls. Push-pull rods engage the fan drive and the reduction box. Johnston-Austins will be displayed in both single-sweep and dual-sweep designs. The single-sweep will also be demonstrated on a Dennis Pax HA chassis. A wide-sweep attachment, giving 6-ft. coverage, will complete the exhibit. An independent engine to drive the exhauster, instead of the power take-off system formerly used, is an important change on the well-established Lacre Model G which employs the Bedford KFSC5 oil-engined chassis. The suction nozzle is automatically restricted so long as light sweepings are being lifted, but the shutter opens up to deal with heavy deposits or objects such as half-bricks. The vertical scarifying brush has an automatic sideways movement, with a range of 12 in., in order to maintain contact with the kerb. A 20-ft. wandering hose is among the equipment. Extension brush gear will bring the width to 6 ft. if desired. The Lacre Model SA mechanical road sweeper will also be available for inspection at Margate.
• The Verro City suction sweeper, introduced at last year's conference, merits attention because of the way in which its design enables the forward hopper to be raised for the purpose of depositing sweepings in a container or other receptacle located on the sweeping beat, so obviating the necessity for recurring journeys to -a distant disposal point. Two forwardmounted vertical brushes feed the sweepings to a central nozzle. Air jets around the nozzle assist in concentrating the dust in the main air stream. The dirt hopper capacity is 1* Cuyd. and the sweeping wi.lat 5 ft. 6 in to 6 ft. according to the type of brushes employed. Power originates from a Perkins Four-99 oil engine, the Vauxhall Victor petrol engine being an alternative.
The Lewin Mechanical Orderly sprinkler-sweeper-collector has a lengthy history of successful operation, its narrow track making this unit very suitable for use in confined conditions. Tipping of the 3-cu.-yd. body is by press-button control. A sweeping width of 5 ft. is achieved by a transverse rotary brush and a vertical scarifying brush, these being raised or lowered independently by electro-hydraulic press button so as to meet
different road conditions. The larger Lewin Sweepmaster has a rotary elevator; a high-pressure water jet system can be brought into action fore and aft of the brushes.
New from Kent Engineering and Foundry Ltd. is the 736E electric• sweeper which draws energy from an Oldham 255-amp.-hr. traction battery. This unit operates silently at speeds up to 5.5 m.p.h.; the battery gives approximately six hours running. The Kent section is expected to include the more familiar KEF 526, KEE 536 and Munivac Models. They incorporate petrol engines but as an alternative there are Calor gas designs. Modern cleansing equipment will also figure in the displays by Columbus-Dixon Ltd. and R. S. Stockvis and Sons Ltd.
Developed to meet the call for a sweeper-collector of simple yet robust construction, which can be used in conjunction with a tractor, the Sturdiluxe Glutton will be demonstrated by H. Young (Motors) Ltd. .
Wayne power sweepers will again be the main items from Walker's Mechanical Cleansing Ltd. There will also be the Walker-Vac suction cleaner with kerb-mounting rollers_ Although out of the main stream of the public cleansing field, the Atumat sewer cleaning unit fast year attracted close attention. This year Metering Pumps Ltd. will have ready for examination a self-contained mobile outfit with 1,000-gal. tank on a 5-ton chassis. The Atumat pump, driven by its own oil engine, is capable of delivering 42 g.p.m. against a
normal working pressure of 900 a force adequate for cleansing mains up to 52i0. or 60 in. When fed into .a main the reverse water pressure causes the hose to creep along the system, the cleaning process taking place as the hose is rewound. Although unlikelyto be shown at Margate, a trailer unit working on the same principle is manufactured. Its use permits the cleaning of sewers that are serviced by manholes situated in positions unapproachable by road vehicles.
Returning to the field of primary cleansing, an outstanding item from Shelvoke and Drewry Ltd. will be a Pakamatic 35-cu.-yd. collection vehicle with Zoller dustless loading fittings on a 14-ft. 9-in.-wheelbase chassis with Perkins 6.354 oil engine. In addition to the refuse body there is a front salvage compartment and an enclosed boot" at the rear for carrying the loaders' trolleys. Standard Pakamatics of 20-, 35and 50-cu.-yd. capacity also figure in the S.D. demonstration programme, as will a Pakamatic 50-cu.-yd. container bulk loader and a 25-cu.-yd. fore-and-aft tipping refuse collector.
Two versions of the CrushIoad Mk II will be exhibited by the Eagle Engineering Co. Ltd., a 50-cu.-yd. design on a Bedford KGTZ chassis and a 35-cu.-yd. version similarly mounted. A hydraulically operated crane arm is among the new features being incorporated in the third exhibit, an 800-gal. gully and cesspit emptier, but no advance information is obtainable regarding this vehicle. Likewise, there will be a fourth exhibit on this stand but details have not been disclosed. The Mk. II already mentioned is a modification of the original Crushload produced about two years ago. The continuous loading mechanism is actuated by an electro-hydraulic system with controls in the cab and at the rear of the body. They can be set for continuous motion or in such a manner that the operator
can move the barriers at will by push-button control. Two opposed moving barriers linked to a common shaft make up the loading mechanism. The upper barrier moves forward in an arc, carrying the refuse forward and consolidating it against the sloping floor. When this barrier retracts the lower one comes into action, pushing the compacted refuse into the body. In addition to the contingent of six vehicles offered by Glover, Webb and Liversidge Ltd., five of this manufacturer's products will be presented separately by Karder Motors Ltd. Ramillies continuous loading compression collectors, shown in three sizes, are built in aluminium alloy and have a low loading line. The packing plate, which is the only moving part in contact with the load, compresses the refuse against the floor whilst propelling it forwards and upwards into the main body. On the 50-cu.-yd. design will be a bin lift that raises the standard 11-cu.-yd. container to a high level so as to ensure that the contents are quickly discharged into the large hopper space. The device will readily accommodate containers of different shapes and sizes. If it is desired to use the vehicle as a manual loader the lifting apparatus can be raised clear and locked at the top of the body. The recently introduced Ramillies 20-cu.-yd. model will be at the conference for the first 'time. The Mobile Tip H.Q., which first appeared last year, will be seen once again. Apart from being a means of transport to and from the tip, this design incorporates messing and toilet facilities. It includes messroom, a galley with Calor gas stove, a sink for washing up, washing facilities with hot and cold water, and a flush toilet. A Dual-Tip collector and a Haller system dustless loading collector are also on the list for demonstration. The Karrier selection will include a Bantam with Blenheim compressing collection body. The Yorkshire-Patent 1,000-gal. gully emptier will also figure in the Karrier section. The most recent addition to Dennis municipal productions is the 1,500-gal. cesspool emptier which will be among the company's Margate entry. The new Dennis cab with one-piece curved windscreen, and flush-fitting door handles, will be seen on the 800/1,000-gal, gully and cesspool emptier. In this design provision is made for high-pressure street watering and washing, four-spray feet fitted at the front giving a wide spread. The Dennis MODEL dustless loading mechanism, with plastic-bodied bins, will be featured on examples of the Paxit ITIA and the Paxit Major 111A. The former is of 35-cu.-yd. capacity. The Paxit series has a two-stage automatic continuous loading system, giving quick clearance of the hopper. At the side of the Major MA there is an aperture for disposal of bulky items; it is covered by a hinged, selfclosing flap. Another Major IIIA will be seen with a bulk container hoist for handling 11-cu.-yd. bins. As the compressing device cleats speedily with the contents of a large bin there is no waste of time in waiting in the elevated position for discharge to be completed, Last in the Dennis collection will be the Paxit Major 'IA, a straightforward design of compressing vehicle. In time for the conference the Shefflex organization is expected to produce an entirely new 25-cu.-yd. body in light metal. The Shefflex dustless loading and packing designs, using standard domestic bins, will be employed.
Powell Duffryn. is exhibiting a range of its licence-built Dempster bulk waste disposal units, among them a Dumpster 303-C on a Dennis 10-ton chassis supplied to Walthamstow with containers designed for refuse collection from multi-storey flats and an Albion-mounted Dinosaur 22,000C model delivered, together with a 15-cu.-yd. demountable container, to Anglo Scottish Recovery Ltd. Two Dempster Dumpmasters also feature in the display, one being the first 42-cu.-yd. open-top compaction bulk refuse hauler to go into operation (with Shoreditch), which is a 12-ton-capacity model on an A.E.C. eight-wheeled chassis, the other a CA60-24DB collection and compaction unit on a Guy six-wheeler.
The Pendulette, a short-wheelbase 8/12-cu.-yd. compressing collector, is to be offered by John Gibson and Son Ltd. as a special for the negotiation of narrow back streets and close right-angle turns. The chassis to be used here is a Dennis Pax of 7 ft. 6 in. between axles. This is one of the Gibson Pendulum family of collection units; two other specimens will be shown. A Gibson Pendulum collector on a petrol-engined Morris FE K100 5-ton chassis is to be proffered by B.M.C. who will also be showing a Yorkshire gully-cesspool emptier on the Austin FG K100 low-loader chassis and an Eagle emptier on a Morris FE K100 chassis which incorporates a low-ratio, single-speed rear axle for continuous stop-start working.
Crushload bodies on Bedford chassis will be featured by Vauxhall together with the Lacre suction sweeper, also gullyemptiers by Eagle and Yorkshire.
Operation of the M.P.L. system will be made clear on the stand of Fawcett Preston and Co. Ltd. by the use of a scale model, augmented by photographs of the Hammersmith installation and a film of a working unit. Further details of the M.P.L. process will be found in a feature elsewhere in this issue. Several companies will have paper refuse sacks for inspection. Whilst a valuable aspect of their employment is the fact that an ordinary lorry or tipper may be used for collection, some authorities are using automatic sack slitters on their specialized machines so as to facilitate final disposal.
Harbin electric trucks manufactured specially for sweeping duties, will, as usual, come from the Harborough Co. Ltd. Four examples of Perkins engines suitable for the municipal field will comprise the display of F. Perkins Ltd.
Snowploughs Only minor modifications have taken place to the Snow-Boy snowplough range, three representatives of which will be demonstrated by Rolba Ltd. The most powerful is the Model 2005-EA which is equipped with a 29 h.p. Volkswagen aircooled engine. This is a pedestrian-operated machine which when not required for its primary purpose can be fitted with specially designed street sweeping and sprinkling apparatus. The R-60 Snow-Baby is the smallest, being a pedestriancontrolled snow-blower, specially suitable for clearance from footpaths.
Meyer snowploughs will be sponsored at Margate by Snowclear Ltd. Among notable features is the Electrolift which enables a Meyer plough to be raised in three seconds, or lowered in one second, by the driver in his cab. A spring action allows the whole blade to trip when an obstruction is encountered; an immediate return to normal operating position follows. Out of season the blades can be employed for light angledozing or, in conjunction with a squeegee, for cleaning up after markets have been held.
A Unimog-Schmidt snow-cutter is expected to have the place of honour among the products handled by W. Bunce and Sons Ltd. The heart of this machine is an extremely versatile tractor which on the rear platform carries . an independent engine, this driving a front drum mounted with cutters. Snow and ice after treatment are discharged through adjustable chutes.
The Esse rubber blade, to be shown on a plough by Smith and Wellstood Ltd., is rigid enough to stand up to levelling work on a tip, yet when used in snow it will take many obstructions in its stride. Extremely satisfactory performances are reported with the prototype. The well-known Glotrac trailer-gritter will again appear. Accurate distribution is achieved on this model by an adjustable hopper opening combined with variations in the spinner speed. One of the road wheels drives a spiral conveyor designed to give a steady flow of material; the other operates the spinner that performs the spreading. The chains run in oil-baths and the bearings are self-lubricating.
A new design promised by Atkinsons of Clitheroe Ltd. is the Pathfinder footpath gritter which gives spreading widths from 3 ft. to 7 ft. 6 in. The Pathfinder is actuated by a small oil engine. Always of interest is the Atkinson bulk gritting body which can stand on storage stilts when not required but if needed is quickly attached to a flat platform vehicle. Operation of the spreaders is by a 5 h.p. independent engine with controls connected to the cab.
Showing at the I.P.C. demonstration for the first time are W. Hargreaves and Co. Ltd. This company's Truspred trailer gritters will be seen in several forms, giving distribution widths from 36 in. to 90 in. In addition there will be a 36-in, spread, pedestrian-controlled model which incorporates a general utility truck of this class that can be transferred to other duties after the removal of the spreading device. Another newcomer is Skandia Engineering Ltd. with the Epoke trailer spreader. When attached to a tipper this spreader is filled simply by tipping a portion of the vehicle load straight into the hopper.
Industrial wheeled tractors in various forms will be shown at work by David Brown Tractors Ltd. Apart from refuse tip and agricultural duties, this range has a great variety of applications. The recently introduced 880 industrial tractor, for instance, will be seen with loader, bucket dump attachment and Danline rotary brush. Employed with loader and brush, the 880 is serving several local authorities as snow and general road sweeper, loader and haulage unit. Standard features of the range include six forward and two reverse gears, differential lock, multi-speed power take-off, rear flood lamp and provision for gear-driven power steering.
Of the various machines in the earth-moving class that are to be shown by F. E. Weatherill Ltd., the Type L61 is of special interest for refuse tip duties. This four-wheel-drive loader, which was introduced two years ago, will excavate and carry covering material, spread. backblade and compact, and can further undertake such duties as stockpiling and road cutting.
Apart from the usual ancillaries such as crane attachment, dozer blade and snowplough, the Brayloader BL430 (Bray Construction Equipment Ltd.) has been provided with many other special attachments for cleansing work. It can be fitted with an electro-magnet for ferrous metal separation, buckets for beach clearing and fork lifts or hydraclamp for the handling of baled paper, rag or scrap metal. The Bray 550 tractor shovel will also be on show.
The Track-Marshall refuse control tractor will be put through its paces by Thos. W. Ward Ltd. Muir-Hill earthmovers are to be exhibited by E. Boydell and Co. Ltd. A new loader will be coming from Saville (Tractors) Ltd.
The demonstration will start at 9.45 am. on Wednesday at the Westbrook Car Park, Margate.