Time - saving Electrical Devices
Page 21
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(By Two Makers)
°TWO new items of time-saving elec trical equipment recently made available include an ingenious device, by Messrs. Runbaken Electrical Products, Manchester, whereby the ignition timing of an engine can be checked at various engine speeds.
To check the timing the timer is wired up to No. I sparking plug and to earth. It is then held, after the manner of an electric torch, so that the timing mark on the engine flywheel is illuminated as the engine revolves. No matter how fast the unit may be turning. Lite timing mark appears to be stationary when observed by aid of the timer.
Known as the Synchrolite, it indicates whether the automatic advance mechaniSm is functioning correctly or not.
Weighing only 7 lb., the RDA port
able electric hammer recently introduced by S. Wolf and Co., Ltd., Pioneer Works, Hanger Lane, Ealing, London, W.5, is powered by a universal motor
rated at It.p. The principal use of such a tool in the garage or service depot would be in boring brickwork or concrete preparatory to _plugging or for the insertion of conduit up to %-in. diameter.
It works quickly, as the following figures.show:—Irt concrete it will make a hole 7;32 In. in diameter to a depth of 11 ins., or in. in diameter to a depth of U ins. in 60 secs.; in red brick the 'respective depths of penetration in 60 secs. are 5. ins. and 3 ins.
The machine alone is priced at i15 I5s., or as a hammer kit, complete with an assortment of tools, £19 .I5s.