A TRACTOR-TRAILER STREET-SWEEPING MACHIN
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A Résumé of Recently Published Patents.
THERE HAVE always been two disadvantagestn connection with that type of street-sweeping machine in which the refuse is collected in a receptacle carried by the vehicle itself. The receptacle is necessarily small, and the whole vehicle has to cease sweeping operations eriodically, in order to run to the refuse depot, deposit that which it has col
lected, and return to resume sweeping. It will be realized that the existence of the first disadvantage aggravates the incidence of the second, which is already of no mean importance, since, in most large towns, the refuse dump is a considerable distance out of the centre'of the town, involving a correspondingly Jong absence of the machine from its proper Work—that of sweeping the streets..
The design which is patented in specification No. 194,807, by Harrier Motors, Ltd., has as its main object the practical elimination of the lossof time and waste of feel which is involved by the above-mentioned disabilities, The arrangement involves the use of a trailer, which carries the receptacle for refuse, and which may easily be detached and taken away to be. emptied, its place being taken by a second trailer.
The arrangement may clearly be seen by reference to the accompanying drawing, which is reproduced from the patent
kpecification. The brush, which is in contact with the road, delivers the sweepings into the casing immecliately'in front of it, containing the revolving transfer brush, by means of which they are, carried in an upward direction, to emerge at the top forward side of the cylinder in which the said transfer brush revolves. A second brush is mounted in a casing immediately above the first transfer brush, and revolves in the same direction. It delivers the sweepings, over the top of the first brush, towards the rear of the vehicle. The sweepings so delivered are thrown into a suitably shaped rearwardly extending spout, by means of which they are directed into the receptacle carried by the trailer.
The trailers are designed with towing hooks at front and rear, so that the machine, on leaving its depot, may
1332 transport a chain of trailers to the collecting area, where they can be left, cne by one, at convenient points, to be attached in their turns to the machine, until all are filled, when each ina.y be removed to the refuse dump by means of a horse, by motor, or, alternatively, the machine itself may, on the completion of the day's work, travel back, collecting the trailers and transporting them all to the dump at once.
An incidental advantage of the use of trailers in this way is that the wheelbase of the sweeping machine may be made muck shorter than was possible when a rem'. tele for refuse had to be provided between the front and rear wheels, and the present arrangement permits of a water tank of relatively large capacity being accommodated between the driver's cab and the brush easing.
Other Patents of Interest. •
Sir Herbert Austin describes, in specification No. 194,456, a design of town carriage or taxicab chassis, in which the engine is located over the rear axle, and the drive is transmitted to the front axle. The arrangement permits of the dr occupying a seat in the front centri the vehicle, and of the passengers b commodiously accommodated betv the two axles, George Spencer, Moulton and Ltd., suggest, in specification 194,647, the Interposition, between
Spring ends and the chassis, of cylin ,cal rubber springs, mounted in suit casings. The spring eye is coupled bolt, the lower end of which carri, bearing plate; this supports the ru! springs, which butt against a suit plate mounted on the chassis frame.
Specification N. 194,414 clieeloS( new development of the applicatior the electriCal energy now available most motorcars, from the lighting starting set. In this specification, which A. E. Rooks is responsibh simple type of magnetic brake, cap of being operated by the current di able from that source, is described.
Another patent in connection brakes is that of Rolls-Royce, Ltd.., scribed in specification No. 194,334. has reference to a method of pneum operation, and is particularly designe ensure that the driver, in applying 'brake through that mediuni, is actu sensitive, in due proportion, of brakinoh effort which is being exerted. that end the brake pedal is actually posed, at its inner end, to the s air pressure which is also being tr milted to the bake-operating cylinde Specification No. 194,560, by F. Dobson, describes an oil-level Indic. for Ford cars, of the dipper type. differs from previous contrivances of same order in that the tube which coupled. fo the opening in the crank for the lower of the two.fainiliar oil • is bent, and not straight, as is. us This enables the whole of the intik: to be kept under the bonnet— top of the tube, as a matter. 0F f reaches to a point close beside the haust and inlet manifolds.