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From Engine to Driving Wheels
Page 78
Page 79
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Each Stage in the Power-transmission System Briefly Dealt With. Principal Makers of the Main Components Listed
THE chassis maker's difficulties in obtaining suitable transmission units are now largely dispersed, due to the standardization of bell-housing arrangements, universal joints and other parts. Clutches for various degrees of flywheel torque, with and without clutch stops, are made by such concerns as the Borg and Beck Co., Ltd., and can be had to fit most modern oil or petrol engines. In addition, we have such modern developments as the Daimler Fluid Flywheel, which is now available as a standard unit. Several other such developments are afoot, but are not so far commercially developed as to warrant indexing in this record of regular equipment.
Reliable makes of friction facing for clutches include Don, Raybestos Ferodo, and several produced by other brake. facing makers, the names of which will he found indexed with our article on other chassis components.
The gearbox is an important transmission item, which must be made by a specialist, great care being necessary in obtaining accurate finish and mating of teeth, so as to give long and silent operation. First-rate concerns include Dorman, Meadows, Moss, Fuller, David Brown, Barlow and Chidlaw, Armstrong-Whitworth, Hadfields, Motor Gear and Engineering Co., Ltd., Double Diamond, etc., whilst special gearboxes, like the Wilson self-changing type and the Maybach dog-engagement box, are generally obtainable. Some of these makers produce auxiliary gearboxes to provide an extra ratio range, a useful example being the Warford.
Propeller shafts and universal couplings of the mechanical and fabric types are familiar under such names as Spicer, Mechanics, Hermetic, Angus, Hobdell, Cooper's, Renold and Simms-Jurid, whilst central steady bearings for propeller shafts, usually of the self-aligning kind, are made by bearing 028 manufacturers and are dealt with under chassis components.
Although not suitable for transmitting the main driving power, lighter couplings of the jubilee type may be mentioned under this heading, whilst the Renold chain coupling, for light drives, is a neat fitment. For steam vehicles, etc., transmission chains up to the heaviest sizes are made by the Renold and Coventry works, at Manchester, other chains being produced by the Morse and Brampton concerns.
Rear axles have become quite a speciality, ingenuity being employed to make them silent and long wearing, whilst keeping the weight within reasonable limits, and providing for easy access to the main driving gears. Overhead and underslung worms, straight and spiral-bevel, are principally em.ployed. Well-known makes of such gears include Kirkstall, Moss, Timken, David Brown and E.N.V. Differential gears of the bevel-pinion type also are produced by such specialists.
There is some indication of growing interest in front-wheel drive, and a particularly ingenious arrangement is produced by the Gilford Motor Co., Ltd., this incorporating the Rzeppa constant-velocity universal joint, which gives a wide angularity for steering purposes. In this regard, one may draw attention to the Latil desigu of front-wheel drive.
Many of the leading makers and suppliers of transmission units and accessories of all kinds, as dealt with in this brief survey, appear in the following alphabetical index of names and addresses :—
G, Angus and td.. St. John's Works, Newcastle-on-Tyne. Auto motive Products Co..do., Brock House, Langham Street, London, W.1.
Si? W. G. Armstrong Whitworth and Co (Engineers), Ltd., Thames House, London, 5.W.1.
Barlow and Chidlaw, Ltd., Pendleton, Manchester. Borg and Beck Co..
Ltd., Brock House, Langham Street, London, W.1. Brampton Brothers, Ltd., Birch Road Works, Witten, Birmingham, David Brcwn and Sons (Huddersfield), Ltd. Lockwood, Huddersfield.
William Clark (Spare Parts), Ltd. (Double Diamond), 5, Marshalsea Road London, SKI. Cooper's Mechanical Joints, 881,4,, Lower Kennington Lane, London,
Daimler Co., Ltd. 'Wilson), Coventry. W. H. Darman and Co., Ltd., Foregate Street, Stafford.
E.N.V. Engineering Co., Ltd., High Road, London, N.W.10. Fermin, Ltd., Chapel-en-le-Frith.
Gillord Motor Co.;• Ltd., 465, Holloway Road, London, N.7. Hadfields, Ltd., Tinsley, _Sheffield. Hardy, Spicer and Co., Ltd., Birch Head, Witton, Birmingham. Hermetic Rubber Co., Ltd., Ryland Street, •
Birmingham. Hohdel4 Way and Go., Ltd., 20, St. Clare Street, London, Kirketall Forge, Ltd., Leeds.
TAW Industhal Vehicles, Ltd., 11, Albert Embankment, London, S.E.11.
Henry Meadows, Ltd., Fallings Park, Wolverhampton." Morse chain Co., Ltd., The Chaineries, Letchworth. Moss Gear Co., Ltd., Crown Works, Tyburn, Birmingham, Motor Gear and Engineering Co„ Ltd., Chadwell Heath, Essex.
Raybestos-Beleco, Ltd., Southwark Street, London, S.E.1. Renold and Coventry Chain Co., Ltd., Didsbury, Manchester, L. Robinson and Co. (Jubilee Clip), London Chambers, Gillingham, Kent.
Ernst Schneider (Mayhach), IS, Viotoria Street, London, SAV.L Simms Motor Unita, 'Ltd. (Simms Juridl, Percy Buildings, Grasse Street, London, W.0.1. Small and Parkes, Ltd. (Don), Hendharn Vale Works, Manchester.
Truck and Tractor Appliance Co. (Manchester), Ltd. (Warferd), Trafford Park, Manchester..
Benjamin Whittaker, Ltd. (Mechanics), Victoria House, Southampton ROW, London, W.C.1.