The Supply Department.
Page 17
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A Driver's Suggestion Anticipated.
In our issue for the 1st December, we published a driver's letter I:" R.S.T." (Newcastle), No. 801.--En.] in wItic:h our correspondent described a special form of false mit I% hid' he had used for tightening or looseniee nuts that were inaccessible to the ordinary spanner. It will be remembered that ti is con sisted of a small of mild steel pierced with a double hexagonal hole, nod with its outer periphery shaped something like a cam, the idea of its construction hieing that, when this Was s-lipped over the nut, the toe of the cam face could he readily struck with a hammer 1111(1 a suitable bar. We are now informed by Messrs. Price and Co., 23, Rosebery Avenue, 14:.(1., that they have for some time marketed a patented device ci this description, which we illustrate herewith. We are confident that our correspondent was unaware that his suggestion had already been placed on the market.
From Fletcher, Russell's, of Warrington.
In every repair shop, there frequently arises the nerd for practical and efficient ease-hardening and annealing furnaces, and, whether the work be small or large, Fletcher. Russell and Co., Ltd., of Warrington, is prepared to supply admirable plant. These may be heated either with coal gas from town mains or with producer gas; alternatively, they may he provided with burners for the consumption of heavy-oil fuel. The oil-fired equipments are particularly suitable for up-country use.
Speedometers and Dashboard Clocks.
It has often been argued that a speedometer forms the best check which an owner can have against a driver's tendeney to urge a maohine to an excessive speed. Civet] a lock-up instrument, with a pointer that will register the maximiun speed attained during any given journey, the owner of a motor vehicle has indisputable proof of fast driving, siumld there be any occasion to reprimand the driver for his careless handling of the vehicle. It is. however, necessarythat the instruments should he of first-class make; otherwise, their evidence is unreliable. S. Smith and Sons. Ltd., the well-known watch and clock
makers of the Strand. offers one of the mostreliable instruments on the market. Another good machine is that known as the Jones speedometer, seld by Moth and Co., Ltd. Smith and Sons. Ltd., has a VOI'Vlarge range of clocks for fitting on dashboards, and. wherever a driver is expected to maintain a timed serviee. he should have the assistance of some such reliable and VOIWOD)ently-placed clock.
A New Form of Plate Spring.
We have received front William E. Cary, Ltd., Red Bank, Manchester, particulars of a special type of plate spring which this maker has patented and is putting on the market for employment on both commercial-motor and pleasure-car models of chassis_ The leaves of this spring are arranged in groups of three or four plates, each group having a slightly-different camber to that of its fellows. The bottom group is the flattest of all, and the groups of leaves have a more-pronounced camber progressively towards the top. Clips hold the leaves in alignment.
Radiators and Circulating Pumps.
The name of Lampiough is closely associated with many ingenioas inventions concerning motor-vehicle construetiott; one of these is a useful form of positive rotary
pump, which is made in six sizes, and may be used for pumping either lubricating oil or water. The smallest size weighs but h lb., and is capable of delivering 30 gallons per hour at a pressure of 320 lb. on the sq. in.; a larger size, which weighs 2S 1h., can deliver CM gallons per hour at the same pressure. This company is one of the foremost makers of honeycomb and tubular radiators in this country, and its latest type of radiator is one in which large numbers of flattened tubes are arranged. vertically with strips of crimped metal between, a form of construction which is extremely light and efficient. A
radiator of sufficient area to keep cool a 20 h.p. engine weighs only 12!, lb. Large numbers of this type are being supplied for use with stationary engines in tropical climates, where water is scarce and, therefore, evaporation of the cooling water must at all costs be avoided. Messrs. The Spiral Tube and Components Co. is another firm specializing in the construction of radiators.