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ONE-MAN OPERATION OF 5-CWT. PACKAGES.

15th April 1924, Page 24
15th April 1924
Page 24
Page 24, 15th April 1924 — ONE-MAN OPERATION OF 5-CWT. PACKAGES.
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Which of the following most accurately describes the problem?

An Effective Overhead Runway and Lifting Tackle, which Should Assist in Reducing Labour Charges and Loss of Time in Loading and Unloading.,

TT IS fairly safe to assert that the Igreat majority of packages handled in commerce, and particularly where road transport plays a part, do not exceed 5-owt. in weight. Barrels of tar, oil and other liquids, sides of bacon, sacks of coal, cases containing certain foodstuffs—they all come within the limit mentioned. But the loading and off loading of any package beyond the power of a man to handle obviously entails either the use of a craneor of additional labour, and, whilst the one is not always available, the alternative adds materially to the cost of transport, and it is rint unreasonable to say that the equipment of a vehicle regularly engaged in the transport of such packages with a simple loading device that only entails a light capital outlay should prove profitable, not only because of the labour saved in loading and unloading, but of the time that, can be gained. It often happens that, whilst it is possible to load up at a crane, there is no such facility at the point of delivery, and the engagement of additional labour for the purpose of unloading often entails an outlay that is actually extravagant.. • It is essential, however, that, in the first place, the cost of the installation shall be small and of its upkeep negligible, and, in the second place, that it shall not. encroach upon the loading space of the vehicle.

We had demonstrated to us recently the Manaid loading device, which consists of a framework of H-section steel in the form of two high hoops bolted to the platform of a lorry, braced together at the sides and triangularly to the forward end of the body. Carried in two saddles, the horns of which end in rollers, is a runway, consisting of two II-section girders, bolted together at their ends by plates arid separated by a distance of about 7 ins. This runway is nearly 3 ft.-longer than the distances between the saddles, and when pushed to the rear it therefore overlaps the rear of the vehicle by that much, and when pushed forward comes about level with the rear of the cab. This simple design gives all the advantages

• of a long runway with the compactness of one which falls within the compass of the length of the vehicle.

On the upper flanges of the runway runs, on four rollers, the carriage which contains the lifting tackle. The upper flanges of the ,runway are rounded, and the rollers are greeved, whilst there are stops at each end of the runway to limit the movements of the cartilage.

The lifting tackle consists of a chain drive , connecting the hauling wheel to the sprocket wheel, connected to which -is the winding drum, the ratio of speed and power averaging 8 to 1, the sustaining medium being a form of differential brake acting as a substitute for any form of ratchet and pawl or clutch friction disc. The brake is self-holding, by reason of the fixed ends being placed at unequal centres. The effect of raising. the weighted lever, when it is required to lower the package very slightly releases the tenacious hold of the band on the B24 wheel, and the package can then be let down quite gently. The runway being mounted on wheels fitted on the inner side of a special section allows it to travel freely in either direction, quite independent of the carriage and the operating gearing. Leather and cotton band is used for winding on the drum. For this, however, wire rope can be substituted.

To give fuller details of the carriage, this consists of a strong, inverted Ushaped casing with guard platesfor the chain-wheel. To one shaft is secured the chain-wheel (rotated by the hauling chain), the brake drum and a nine-tooth sprocket pinion, the winding drum being geared to this pinion by a 1-in.-pitch chain running over a 30-tooth sprocket wheel. The band on the drum is passed over a pulley carried on a spindle supported in the easing and then over a. sheave in the lifting hook. The latter is a standard fitting for a 5-cwt. safe load. After passing over this sheave the end of the band is secured to a large boss. There is an ample length of belting to permit the hook to reach ground level, so that the shallowest Of parcels may be handled. The total length of the carriage.is 2 ft. ti ins, and its depth 11 ins.

• Each of the rollers on which the carriage runs is equipped with ball bearings, so that rolling friction when handling the load on the vehicle is minimized.

By means of the chain gear a load of 5. owt. can be lifted from the ground -ait,h ease by one pair of hands. Raised to a height of the platform of the lorry, the package is sustained by the brake, and then can be pushed to the required position on the vehicle (to the very forefront, when desired), and there lowered, the operation occupying approximately one minute. There is ample headroom below the runway, and the loading space on the platform is not encroached upon. The device occupies 12 ins, of the headroom.

Our illustrations clearly show the device in its finally approved form. It-is made by the Barlaw Engineering Co., Ltd., Of 47, Victoria Street, London, S.W.1.

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Locations: London

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