Engine Heater Charges Battery
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ANEW combined engine heater and battery charger has been produced by Power Frequency Heating, Ltd., Alexandra Road, Hounslow, Middx. Known as the Peregrine, the unit employs the principle of electromagnetic induction for heating the engine, and the same components which generate heat, for the engine also constitute a device which provides the correct current for trickle-charging the battery through a small rectifier,
The Peregrine consists of a Ushaped tube, the long arm of which carries the electro-magnetic 1 heater. It is attached to th side of the engine sump in a lo gitudinally inclined position so that when connection is made to an A.C. supply and the tube is heated., the engine oil is caused to cir culate through it by convection. .
Warmth from the oil is then distributed round the engine by conduction and radiation. This method, it is claimed, is more efficient than heating an engine via the cooling system, which includes a radiator for the rapid dissipation of heat.
Also available for use with a D.C. supply, the Peregrine carries a 10-year guarantee and has a basie price of £9 17s. 6d.
Hinged-head Lamp I-1 A PORTABLE electric lamp having
a hinged head has been added to the Drydex range by Chloride Batteries. Ltd., Exide Works, Swinton, Manchester. It is known as the 1-1L1504. and is a smaller version of the HLI503 model.
With the head in the raised position. it serves as a portable inspection lamp. and where a static source of light is required, the lamp can be stood on end and the head .swivelled to any convenient position. The HLI504 measures 84 ih. by 5/ in. by4*., in. and weighs 2 lb. 9 oz. It takes a Drydex L15 battery costing 3s. 9d. Complete with battery,. the lamp costs £1 3s. 10d.
"Do-it-yourself" In Plastics A RANGE of polyester compounds, ft pecially formulated for each application and fabrication technique, has been developed by a new company. Artrite Resins, Ltd., 4446 Kingsway. Londoo W.C.2.
Theilcompotmds are marketed ready for use, requiring only the addition of a hardener to set the resin. If desired. they can be supplied pigmented in a variety of colours. •A complete range of polyester resins is also available for users who wish to do their own compounding.
At-trite Resins also hold stocks cf glass-fibre reinforcing materials, and there is an advisory service on mould and product design. The company's activities are under the direction of Dr. G. Adel., who is well known in the reinforced plastics industry.
Multi-grade for Oilers FIRST introduced to the British market in October, 1955,Mobiloil Special, a multi-grade lubricating oil, is now suitable for use in oil engines. In making this announcement, the Mobil
Oil Co., Ltd.. say they believe it to be the first multi-grade lubricant to be specifically mentioned as being suitable for this kind of service.
Warning of Brake Failure ASIMPLE device which warns the driver that the brake fluid 'in the container has fallen to a level that may indicate a leak or that the container needs replenishing, is being marketed by Sovy (U.K.), Ltd., 54 Park Lane. Croydon, Surrey. It consists of a float' operated switch, the unit forming an integral part of a replacement container cap.
To connect in a normal circuit, one wire from the cap is taken to the ignition circuit, and the other to the warning light which is mounted in any convenient position. As the level of the fluid drops, so the float sinks and a sliding rod attached to the float actuates the warning-light switch.
Where the container forms an integral part of the master cylinder a conversion kit is available.
For the Student nESIGNED for students entering for
the award of the National Craftsman's Certificate in automobile technology, "Motor Vehicle Mechanics'' Textbook " was written by F, K. Sully. A.M.1.M.1., and published on Monday by Temple Press Ltd., at 12s. 6d., net (13s. 2d. by post).
Divided into two parts, the book is at once easy to understand and interesting_ Part I is devoted to' calculations, science and drawing, whilst Part II covers motor-vehicle technology. The text is illustrated with over 200 graphs, diagrams and perspective drawings, and amplified by numerous worked examples having a practical application.
Not only will this volume be of value to the students for whom it is intended, but also to apprentices and trainees as an initiation into automobile engineering.
Background to Oil Engines
rOMPREHENSIVE coverage of the
technical background of oil enginzs and of current British designs is given by "The Oil Engine Manual" of which the sixth edition was published on Monday by Temple Press Ltd., at 18s. net (19s. 3d. by post). Edited fry D. S. D. Williams, .A.M.I.Mech.E., who is editor of The Oil Engine and Gas TurJ?ine, the book is excellently written and should prove of considerable interest and value to both the qualified engineer and student.