From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Page from 'The Electrical Review' discussing cable faults, composition vs porcelain insulators, and labour conditions for engineers.
| Identifier | ExFiles\Box 24\2\ Scan027 | |
| Date | 18th June 1920 | |
| DISNY & LUCAS, BANK CHAMBERS, 329, HIGH HOLBORN, LONDON, W.C. X 1109 (filed 22.6.20) 221, JUNE 18, 1920.] THE ELECTRICAL REVIEW. 779 eir own brains nor other men's, until now are counted of no value at all in the com- it is perfectly true that you cannot damn without doing damage to your own; nor can without becoming a slave also. Chief engi- hey set out with the object of making their us low. The engineer has been a fool, and der br helping the younger, he has now the worm has turned, and the tragedy nation of status and conditions of labour has west rung of the ladder, instead of coming p, as it ought to have done. Now, of course, ers are still fools they will press the claims thus their own status will improve, if they e that is claimed, and all without any effort not, then they will have a taste of their at is, receive little more than their assistants, r assistants receive little more and often less s. I should suggest that engineer members ver very seriously before any such expression s used with reference to the schedule of the ard; pre-war values were neither right nor schedule represents only a small per cent. eal pre-war value, the just value of a man's dge. To say that it was then a case of nand" justifies any extreme demand that ow make. Employers made a moral prin- not logical for them to alter and whine over ast them now. It is a law of nature that if you injure yourself, and all the talk in the ake right for one wrong for the other. If annot stand the charges and make a profit, must be raised until they do; I have yet to engineer who considered the profits of his urging his own claims. There is no justi- nmer undertaking to pay top price for d squee the technical man on such a plea. been cheap, and now is an opportune time ull together to make the non-technical man he electrical supply engineers consider them- ue which has to be paid for; but if we have e top men who have no use for any other "I," then harm must be done. At present ker is not prepared to throw in his lot com- manual worker, though there is a struggle at him to do so. I only hope that it will not ember of the I.M.E.A. has it in his mind to ans to bring this about at once, or he may itter fruit of his thoughts. We are all mem- profession; some day others will follow you. u now whether you will be honoured as a calling or despised as a hindrance to the proper dignity. A Technical Worker. were discharged through the galvanometer, and deflections of the needle were noted. The faulty line gave half the deflection given by each good line, both of which gave equal throws. The test was then repeated under identical conditions but from the other end of the cable, with the same result as before. Since the cable was uniform throughout its length and the lead sheath continuous and efficiently earthed, it was assumed that the galvanometer deflections would be propor-tional to the length of the cable. The nearest joint-box to the middle of the cable length was broken down, and it was found that one line had open-circuited at the sleeve joint in this box and the other two were almost separated but still making metallic contact with the other half of the cable. In this case the faulty line was well insulated at the break, the compound having sealed the ends. J.{Mr Johnson W.M.} W. H.{Arthur M. Hanbury - Head Complaints} June 7th, 1920. Composition v.{VIENNA} Porcelain Insulators. In your issue of June 4th, Mr. Geo. V.{VIENNA} Twiss, M.I.E.E., writes to find fault with a brochure we have recently issued dealing with "Telenduron" insulators. Perhaps we have failed to make sufficiently clear that "Telenduron" is manufactured to different specifications to suit the special requirements of different articles. For "Telenduron" as used for telegraph and telephone insulators supplied by us to the G.P.O., we claim:— 1. That it is less brittle than porcelain. 2. That while ordinary commercial porcelain to some extent depends upon its glaze for its insulation, in the case of "Telenduron" the surface finish is of no importance. 3. That its electrical properties as substantiated by N.P.L. reports are ample for all ordinary low-voltage requirements. For high-voltage transmission we manufacture "Telenduron" to other specifications to suit the special requirements of the consulting electrical engineer. "Telenduron" is more durable than porcelain. While, like porcelain, it does not incorporate vegetable and animal substances, but is made from "rocks of the earth itself"—to quote Mr. Twiss—it also stands knocking about—which porcelain does not. per pro Thomas De La{L. A. Archer} Rue & Co., Ltd., H.{Arthur M. Hanbury - Head Complaints} C. PARKER, A.M.I.E.E., Manager. Walthamstow, June 15th, 1920. COMPOSITION v.{VIENNA} PORCELAIN INSULATORS.—CORRECTION.—A serious printer's error occurred in the schedule given in the letter of Mr. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} V.{VIENNA} Twiss on this subject, in our issue of June 4th. The Schedule should read:— Flash-over voltage, dry... Telenduron. 40 K.V. Porcelain. 40 K.V. Puncture voltage. 95 K.V. At least 75 K.V. | ||