Judge — July 19, 1924 — page 30: what you’re looking at

Machine-transcribed from the original scan — historical spelling and the odd misread are preserved.

Do You Owe Yourself a New Car? Tf You Do, Don't Buy Hastily There is a make and model best suited to your requirements and your pocket-book — and there is the Motor Department JUDGE find that to help you car Ihe services of the Motor Department are absolutely all the coupon below to obtain the unbiased advice of tive experts {ree to readers of Jupct Use its aulomo- Please fill out the coupon completely so that we may know your requirements in detail COUPON \foter Department Jupct West 43d St., New York City ! am considering the purchase of acar to cost about $ and am especially interested in one of the (make) . (type) \fy requirements for @ car are as follows Capacity I'ype of body Driven and cared for by of roads would be used chauffeur Kind over which car -a used car of wt: which I would like to turn inas partial payment The following cars of approxi- mately the type in which | am interested are handled by dealers in my territory “Please advise me as to the car best suited to my requirements. Name \ddress | requires this high voltage | trici | automobile |/MOTOR DEPARTMENT| | Subseribere desiring practical help or tech et nical information about motor cars, trucke. acer or fouring routes, can obtain it by seriting fo the Motor Department, Suir, W, jod Street, New York, No charge v4 made jor thie service. Please remember that a two-cent atamp should be inelosed for rel Harnessing the Lightning have noticed a motoring trip, may the cross-country marveled at the liny you large steel poles electric wires, thought that transmitting thousands of horse power al the fearsome pressure of from 5,000 to 1,000 volts. Under the however, conveying and have these cobwebs are engine hood of your car, is an electrical system whieh, while of high, power of cle: nol transmitting the same amount nevertheless carries higher, The rie current is based on the amount flowing and the pressure al which it is carried. The power lin mount of cur while horse power, as ore a vollage. = in question sitat a high the an infinitesimal carry a large pressure or voltage, Wires of your engine earr amount of current at a pressure of from 10,000 to 20,000 volts. The power line lo overcome | the transmission losses and the resistance which would otherwise be set up inthe Wires; your engine « this higher voltage in order to fot the current (he gap in your plugs and thus form th spark which ignites the mixture in cach cylinder. The popular analogy between clec- y and water is even more striking when applied to the ignition current of an engine. If the amount of is likened to the flow of water through a large pipe, and the of that current is compared with the pres- of that flow, current voltage sure or we have the understandable com- “head” means for an The system is similar to a pipe line connected with a reservoir thousands of feet up in the mountains amount of wate tem would be parison. tric power transmission carrying a tremendous while the an infinitesimally ignition sys- smaller pipe connected with the same reservoir or one at a greater height. throwing a necdle-like pin-point of water with tre- mendous The latter prick and sting the skin without c! any permanent damage, which is exactly the effect of unintentional contact with the high-tension wires of your i system when the pressure. would tition engine is running. If you should be caught in the maclstroar of the larger pipe line, death and destruction would follow as quickly as contact with the high power electric transmission system, Electricity travel willingly through air; it much prefers metal. On sixteenth inch air gap offers as much re- sistance as thousands of yards of wire, and in conseque however, not does high pressure be built up to push it across this gap. must The pr resistance to the jump across this gap in creases with the In’ pressure of spark. should) be » stroke when the increase and as the the top of Ul exinder al its highest, an ineh or the air, formed al m each engine compression energy sufficient to jump sooof normal air must be available. Briefly, mobile engine consists of but thre tial the of the current Which may be either battery or magneto and which includes the apparatus for in asing Voltage Lo from 10.000 to 20,000 the ignition system of any auto essen parts; source the wires which conduct this high voltage current to one end of the spark plugs the path by which the current. re turns from the ot and r side of the d the spark plug to the The cur generatit return of the uree usual means for the nt is through the iron of the engine of the hack to the other riminal of the battery or im: and: frame cary post or | nelo. Consequently. our principal prot lem becomes that of couducti from to the nember the eur gap im the that the for hh rent ils sonred plug. for we must electricity is always attempt the shortest and This means that the home by test way ding to the plug must either be covered with a wires le heavy insulation or must be kept a from any metal aeross whieh) the spark may jump in pref ee to the high com pression gap in the spark plug Electricity only gen encounters resistance, already shown that the air offers amount of resistance, larec ‘an understand why: the spark represents suel of When lowed to follow an easy we 1 intense point heat electricity is al nd undisputed path, it does so without fuss and er heat. Therefore, if accumulates on the tes no oil or carbon the spark ap. the current without points ss the mate plug and thus brids will this much as a show of ange pass by so heat of the This is short route by which the current ean return to ils soures without jumping the Nine-tenths of all motoring difficulties emanate from the ignition system. Spark the points may and the which we desire for the explosion mixture will not be known as a snerated. cirenit, or spark gap. plugs may become sooty. the ed or effected by oil or other difficulties influen cing one or all cylinders. multi-cylinder is exe difficult: at the the trouble or even the exact position of the become burned, the insulation In these days of engines, it times to | le tingly source of eylinder which is failing to deliver of the Several methods Hoy the plest is to invest a dollar or so in one of the power. may: be d, but probably sim pencil-like spark plug testers: which are available from almost any accessory dealer, The point of this pencil, when ed on any one of the plugs, will indi the exact firing al the time of Harotp W. Stauson. conditions whieh: occur ignition comicbooks.com