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ELECTRICAL EQUIPMENT
WI-TEN the extent to which reliance is placed upon the electrical side of a vehicle's make-up is considered, it is surprising that breakdowns, in one form or another, are not more frequent. This immunity from irritating trouble is due, principally, to the foresight and the progressive policies pursued by our leading makers of electrical equipment, particularly, may it be said, in battery manufacture.
After all, the battery is the heart of the system, and onerous as has been its burden in the past, the demands made upon it to-day leave one in wonderment as to how it ever carries on at all.
Better Batteries Available.
Improved methods of construction and the use of steel alloys have resulted in the production of batteries which are well-nigh indestructible. Examples are to be found in the Alklum Steelbloc battery made by Alklum Storage Batteries, Ltd., those made by Britannia Batteries, Ltd., and known as the Pertrix; the C.A.V. Nife nickel-cadmium alkaline battery for which C.A.V.-Bosch, Ltd., is responsible; Exide-Ironclad and Exide flat-plate
type batteries, made by the ChlOride Electrical Storage Co., Ltd.; the Kathanode and Green Dualode range by the D.P. Battery Co., Ltd.; those produced by Joseph Lucas, Ltd., and which, known as of the Armouredplate type, have the
conventional antimonial lead grids; and a -useful range by Suffice it to say, therefore, that the modern battery, in its ability to do its job and to withstand real punishment, is an outstanding example of genuine progress.
Where distilled water and acid are stored in carboys it is much more convenient to pump over the contents than to use the tipping method. F. W. Berk and Co., Ltd., manufacturers of the well-known B.A.A. accumulator acid, provides for this with a simple form of pump which will deliver from 10 drops to 1 gallon per minute, through 5 ft. of hose.
Making Distilled Water.
So far as ample supplies of distilled water are concerned, the Runbaken Autosil distilling plant is of interest. It is electrically operated, automatic in action and with current at id. per unit, distilled water can be produced at less than 3d. per gallon. Runbaken Electrical Products is responsible for this equipment.
Turning now to ignition equipment, in its type J magneto, the British Thomson-Houston Co., Ltd. has an instrument, designed as a replacement unit for coil-ignition equipment. It is of the rotating-magnet type and incorporates an auto matic-timing mechanism operating in an oil bath.
An interesting development in battery-ignition equipment is found in the Delco high-voltage .coil, the chief advantages claimed for it being easier starting and the ability to fire a weak mixture.
A coil in which oil insulation is used is the S20, for which Runbaken Electrical Products is responsible. The merits claimed --for this apparatus are a perfect degree of insulation between the core, windings and the case, low current consumption and a higher stepup in high-tension current.
The tendency in dynamo and starter design lies in the production of instruments of reduced bulk, for the same or greater efficiency, which, naturally, helps the vehicle builder. The C:A.V.Bosch type G55F24 24-volt dynamo, for instance, has a diameter of only 51 ins., and has an output of 480 watts at 950 r.p.m.
An Axial.type Starter.
In its type BS6 starter this same concern has an instrument of the axial type, in which the armature, with its shaft, is capable of axial movement in its bearings. By this arrangement the initial engagement of the starter pinion with the flywheel rack is of a gentle nature, as it is only when a trip switch is operated that the full current passes through the windings to produce maximum torque. .
Another make of starter, in which initial engagement is made at low revolutions, is the type 6SGby Simms Motor Units, Ltd. In this case, two sets of field windings are employed, one providing for the engagement of the starter pinion and the other for maximum effort.
In the matter of battery-charging apparatus, operators, to-day, have a wide selection, ranging from the trickle-type, such as can be obtained from Gordon Equipments, Ltd., amongst others, to motor generator sets capable of dealing with large number of high-capacity cells., An interesting type of dry metal
rectifier is found in the Davenset Drimet, a product of Partridge, Wilson and Co., Ltd. It embodies a new type of unit in a solenium-oxide combination. In the matter of charging apparatus generally, the General Electric Co., Ltd., is, of course, in a position to meet every need.
'S. Smith and Sons (Motor Accessories), Ltd., is marketing an electric speed indicator of simple and robust design. The' scale length, on this instrument, is similar to that of mechanically driven equipment and there are no moving coils or windings. Another piece of electrical speedindicating equipment is found in the type L instrument, made by the
British Thomson-Houston Co., Ltd. This is actually a high-grade a.c. moving-iron voltmeter, scaled in m.p.h. It can be supplied for driving by belt, flexible cable or direct.
Efficient lighting is a vital necessity on goods and passenger vehicles, for, although road speeds are moderate, there are many machines which operate for long periods—during the hours of darkness. A combination driving and fog lamp, which gives a powerful, longrange beam in the upper half, and a wide-spread, dipped light in the lower half, forms one of the specialities of Simms Motor Units, Ltd.
The Lucas Passlight is alreadywell known, the type FT67, which gives a flat-topped, driving beam, being particularly suited to the more luxurious type of coach.
Noteworthy Lighting Development.
An interesting development in lighting is to be found in the matching-up of two lamps, the optical characteristics of which differ, in such a way, that they combine to form a single, nondazzle beam of considerable range and spread. These lamps are known as the Trippe Matched Pairs, for which Trippe Lights, Ltd., is responsible.
For those operators who wish for something distinctive in the way of warning devices, there is the Lucas Mellotone electric wind-tone instrument, the note from which, whilst being pleasant, commands instant attention. Clear Hooters, Ltd., is responsible for a useful range of instruments of both the medallion and horn types, a useful one in the born range being the Clarion, model HF100. It is
a high-frequency instrument, and gives a particularly penetrating note.
Additional items of equipment, taking their quota of current from the battery, are screen wipers, heaters and radio. Respecting the last-named, a set which is becoming popular amongst coach operators is the Philips MotoRadio, whilst K. M. Papelian, Ltd., markets the Motorola.
When thinking of sparking plugs such well-known makes as Lodge, K.L.G., A.C., Champion, Hobson and E.R. come to mind.
In reviewing the extent and quality of the various electrical accessories which are now available, one arrives at the conclusion that they are designed and built for trouble-free service over long periods.
The following list contains the names of makers of electrical equipment.
A.C. Sphinx Sparking Plug Co., Ltd., Danstable. Alklum Storage Batteries, Ltd., Waterside, Halifax,
Batteries, Ltd. Hunt End Works, Redditch. Benjamin Electric, Ltd., Brentwood Works, Tariff Road, London, N.17. Bosch, Ltd., Lenten Road, London, W.3. British ThomsonHouston Co., Ltd., Coventry. Britannia Bat teries, Ltd., Redditch, Worcester. F. W. Berk and Co., Ltd., 52, Leadenhall Street, London, E.C.3. C.A.V.-Bosch, Ltd., Acton, London W.3.. Champion Sparking Plug Co., Ltd., FieItham. Chloride Electrical Storage Co., Ltd 137, Victoria Street, London, S.W.1. Clear-Hooters. Ltd., 79-81, Lombard Street,_ Birmingham. Stewart Engineering Co., Ltd., 136, Long Acre, • London, W.C.2.
Deleo-Remy and Hyatt, Ltd., 111, Grosvenor Road, London, 8.W.1. Desmo, Ltd., Deems House, Stafford Street, Birmingham. D, P. Battery Co., Ltd., Bakewell, Derbyshire. Equipment and Engineering Co., Ltd., 2-3. Norfolk Street, Strand, London, W.C.2. E.R. Pings, Ltd., Pegamoid Works, Angel Road, Edmonton, London. N.18, Eeer-Ready Co.
peat Britain), Ltd., Hercules Place, London, Futter Accumulator Co. (1926), Ltd.' Woodland Works, Chadwell Heath. General Electric Co., Ltd., Magnet House, Kingsway, London, W.C.2. Gordon Equipments, Ltd., 25, Milton Street. London, E.C.2.
Hart, Accumulator Co., Ltd., Stratford, London, E.15. H. M. Hobson (Aircraft and Motorl Components, Ltd., 47-35, The Vale, Acton, London, W.3. Hunt Saletisigne, Ltd., Great West Road, Brentford. K.L.G. Sparking Plugs, Ltd„, Robinhood Engineering Works, Putney Vale, London, S.W.15.
Lodge Plugs, Ltd., Rugby. Joseph Lucas, Ltd., Great King Street, Birmingham. Partridge, Wilson and Co., Ltd., Davenset Works, Leicester. R. M. Papelian, Ltd., Edgware Road, London, N.W.2. Philips Lamps, Ltd., 145, Charing Cross Road, London, W.C.2. Runbaken Electrical Products. Deansgate, Manchester.
Simms Motor Unite, Ltd., Oak Lane, East Pinchley, London, N.2. S. Smith and Sons (Motor Accessories), Ltd., Cricklewood, London. N.W.2. Stadium, Ltd., 75-77 Paul Street, Great Eastern Street, London, E.C.2. The KU. Carburetter Co., Ltd., East Works, Bordesley Green Road, Birmingham.
Trico-Folberth, Ltd., Great West Road, Brentford. Trippe Safety Light Co., Ltd., Pellow Works, Halifax. Tudor Accumulator Co., Ltd., 50, Grosvenor Gardens, London, S.W.1. Tungstone Accumulator Co., Ltd., St. Bride's House, Salisbury Square, T,ondon, Vokes, Ltd., 95, Lower Richmond Road, London, S.W.'S. Westinghouse Brake and Signal Co., Ltd., 82, York Road, London, 10.1. Young Accumulator Co., Ltd., Maiden Way, New Malden, Surrey.