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3y Ashley Taylor, A.M.I.R.T.E. ASSOC. Inst. T.

12th June 1964, Page 79
12th June 1964
Page 79
Page 79, 12th June 1964 — 3y Ashley Taylor, A.M.I.R.T.E. ASSOC. Inst. T.
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Which of the following most accurately describes the problem?

nce, others were straightforward suction iachines.

Mention had been made of the fact at some suction-assisted power sweepers Id not comply with the Ministry of 'ransport Construction and Use Legulations in respect of the road springs ✓ brakes, said Mr. Patrick. Amended egulations had now removed the :quirements for springs on sweeping tachines not exceeding 4 tons unladen 'eight and not driven at more than 20

Other important directions which had ppeared recently were the Vehicles 3onditions of Use on Footpaths) Reguitions, 1963. They conferred on local uthorities rights to use appliances or chides on footways for cleansing puroses and specified certain maximum 'eights and the speed of such machines. 'he weight must not exceed one ton and le speed, when used on a footway, must ot exceed S m.p.h. Certain restrictions

n wheel loading and distributed weight 'ere also laid down. These regulations ,moved the former statutory restrictions n the use of machines for footway leansing and should encourage the evelopment of machines for this urpose.

/no Drawback One drawback of the older type of iechanical sweeper-collector was its lability to deal with heavy falls of :aves. At such times when mechanical ids were most required, the mechanical weeper-collector was of least use.

Another factor which might eventually lake present designs of this type of aachine obsolete was the inability to weep both sides of one-way streets. Vlaile slow-moving machines painted in right colours, could no doubt safely be ised in daylight " against " the traffic ow in wide one-way streets, this would equire special statutory authority. One f the disadvantages of building a weeper-collector on a standard cornlercial chassis, to meet the requirements 1. rightand left-hand sweeping, was that he additional cost of dual controls was lmost unavoidable if the driver was to Lave an adequate sight of the kerb, This omplication had been avoided in a .wedish design, the Verro, where the river was centrally seated.

One criticism that must be directed at lany sweeping machines manufactured • this country was the poor visibility forded to the driver, went on Mr, 'atrick. Very often he had little or no iew backwards and was entirely depenLent on an offside mirror when turning lut from the kerb. By reason of the losition of the brushes in relation to he cab the driver also had to glance lownwards and backwards to check the tosition of the channel brush relative to he kerb. It was to be hoped that future lesigns would be improved in this espect.,

A system operating successfully in lalford in connection with pedestrian

controlled suction cleaners made use of salvage vehicles to transport the street cleansing machines to and from the depot. The salvage vehicles, 25-cu.-yd. articulated trailers, distributed the machines and operators to their districts in the morning before starting salvage collection. One of the trailers, which worked in relays on salvage collection, had time at the end of the day after unloading its salvage to nick up the street cleansing units and return them to the depot at their normal finishing times. One difficulty in assessing the work done by mechanical sweepers was that the actual sweeping mileage had to be estimated. It would be useful to have a mileage recording device operated from the broom gear on a sweeping machine. Mr. Patrick said he had experimented with a Servis recorder fitted to the broom gear on a Lewin Mechanical Orderly. This recorded quite clearly the periods when the brush was in operation but did not of course indicate the mileage swept. In Stockholm mechanical sweepers were fitted with tachographs to record vehicle speed and mileage swept. A bonus based on information recorded by these instruments was paid to the drivers.

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Organisations: A.M.I.R.T.E. ASSOC.
Locations: Stockholm

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