Milwaukee School of Engineering - EMF Yearbook (Milwaukee, WI)

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 . M » TEE 1920 EMF- -- Xow then, fellows, here comes the important part. Watch closely. Up comes the rubber belt conveyor bringing a projectile. “Looks very much like an ordinary shell, you say. Yes but it isn’t. This one is made of steel, having a magnetic permeability (U) of 9.000 and a magnetic charge of the intensity of 169,400] gausses to the cubic millimeter. (The reader may make these computations with his slipstick providing he works it at a mod- erate speed. The writer ran a hotbox on his by attempting to make these calculations and as a result disabled the ’steenth place on the log scale, there- fore allowances will have to be made for small errors.) To get back to our subject—the highly magnetized projectile is placed in the gun, the charge inserted and the breech closed. Presto! the push of a button and ROOM ! ! ! A-a-a-ah! but let’s look at the recording split-phase meter on our phosphor-platinum line. What! ! Jumping cross-eyed grass- hoppers! ! ! ! We have generated 9817 Milli-volt-amperes! And that is not figuring the wattless current nor the resultant components either! But what’s this little mark below the zero line on our chart? Oh yes, that is the non- inductive kick generated when the gun recoiled. We rush back to the gun again just in time to see the second shell brought up. It looks identically like the first but again, it isn’t. In the first the nose of the shell was the north pole, while in this it is the south pole. “But why the change,” you say. Simply this—we desire to generate alternating cur- rent and as it was sen in our simple experiment that by inserting the south pole we got a current in the opposite direction from that when we inserted the north, we are simply applying the principle. That’s all, just apply the principle. 'Phis current so generated may be used to propel the ship through its big “outa’synchronous” motors and thereby save our great government the worry of a coal shortage during the war season. Since gunpowder is so very cheap in comparison to the present as well as predicted future price of coal, it is thought that our invention will meet with a great deal of favor provided the next administration adopts economic measures so far overlooked by the pres- ent one. iCJ 'c»M£S S THKl 30LATotS —- ox. y r. ttMT-riOZK Merc . FIG. 1 i I Pnqe One Hundred Sixty-nine

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TEE 1920 EMF- 1 y -' £0 M T WONDERFUL NEW DISCOVERY OF THE AGE IS ACCREDITED TO MEN OF THE SCHOOL OF ENGINEERING OF MILWAUKEE BATTLESHIPS CAN NOW OPERATE WITH NO PRIME MOVER (except gunpowder.) Means by which electric ship propulsion can be developed without the aid of .steam “turbans.” “The heights by great man reached and kept, Were not attained by sudden flight; But they, while their companions slept, Were toiling upward in the night.”—LONGFELLOW. This quotation applies to the geniuses who have, by the burning of much midnight “juice,” finally devised this wonderful scheme of developing power for a battleship by means of its own inherent fighting qualities, namely— guns. The scheme as proposed is this—but first let us understand the principle upon which this marvelous invention is based. Engineers II-B, you will remember with more or less pleasure Exp. 115 in Mr. O. W.’s Book IV of Practical Electricity. Well that is the keyboard upon which we shall play this whole tune. You probably do not remember what it was about so we will refresh your memory by a review of the main points. We were told in the instructions to “thrust a permanent magnet North pole first, into a solenoid connected in cross-compound series—multiple with a ballistic galvanometer, record deflections and tabulate all results.” They neglected to say whether the galvanometer was to be of the foot-ballistic type or the basket-ballistic so we compromised by taking the steel-ballistic type which we understand has a better power factor. Well in short we found that when we introduced the north pole of the magnet to the solenoid (a very formal introduction) the deflection on the galvanometer was a certain number in one dirccion. but upon presenting the south pole it was a certain number in the opposite direction, the amount of deflection depending upon the speed of the introduction. From the title of the experiment “Current Induced in a Coil by Means of a Permanent Magnet” we gather (as we would otherwise have been unable to do) that current was actually created in the coil by the simple idea or method just explained. Now the application of this principle to our wonderful invention is as follows: In Fig. 1 a battleship gun “A” is shown. This gun will be constructed of some material which is not a magnetic shield and which has great tensile strength and elasticity such as LEAD (chcm. symbol PbO.j) and which is capable of withstanding the great concussion of a discharge of smokeless powder, preferably “Swans Down” or “Mary Garden” brand, “Mennens” or “Djer Kiss” are not recommended because they contain an excess of French chalk which gums up the rifling. Around the barrel of the gun and 120 cm. apart arc wound three coils each consisting of several hundred layers of No. O-f-% (S. O. E. gage oil insulated cast iron wire. These coils B. B2. and B-{ are connected in star- delta to three No. 000000000% phosphor-platinum mains, “C,” leading to the frequency transformer and stabilizer below decks. This particular piece of apparatus has automatic features which will be explained later. 4 P O St Page One Hundred Sixty-eight

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 M y saL. -the 1920 a s?r The automatic feature of our frequency transformer and stabilizer is such that regardless of the frequency of the current entering same it always comes out 60 cycle, 25 cycle or 500 cycle according to the way you turn the dial on the case. For the purpose of protecting our idea (which is not patented, for reasons best known to the patent office), we are not showing this very unique and valuable piece of apparatus, but will leave it to the readers in- genuity and imagination to picture it, but take it from us it works! Believing now. that we have enlightened the public, and particularly the advisory council of the School of Engineering, regarding our wonderful in- vention of the age and trusting that the taxes of said people will be materially lowered by the enormous saving of coal it will make possible for our govern- ment, we inventors bid you a fond “Adios.” Signed: I. M. LOCO. Mobile. Ala. and URA NUT from Squirrelvillc. WORLD'S GREATEST ELECTRICAL INVENTION To be used by T. M. E. R. L. Co. They say there is nothing new under the sun but we disagree. Here is a NEW invention which we accredit to the brightest genius in the whole II-B clas. Certainly it is not necessary to mention his name! This invention will, without a doubt, furnish T. M. E. R. L. Co. with juice for the peak loads during the ensuing three years at least. In honor of the person who inspired the now famous inventor, this new strike of progress will be called “The Hertzian Aero-Accumulator and Energizer.” The device was designed for use entirely upon individuals who. by their constant and untiring efforts, have heated the classrooms with “hot air” dur- ing the past several months. It is a shame, we’ll admit, to deprive the classrooms of this cheap and efficient source of heat, but it is thought that since so little of said “hot air” was really absorbed by the students and faculty, this new means of utilizing the before-mentioned energy will be much more efficient than the old. The theory of it is, that when this apparatus is applied to the individuals worthy of being supplied with it, the general effect will be to reduce the amount of hot air issuing from the chasm between the jaws of the individuals. Also, since the same motion of said jaws will be made in relieving their minds as was made previously in “spilling the hot air,” this mechanical mo- tion will be used in producing air at ordinary temperatures and in a con- fined space whence it can be made to do work in a more beneficial form than was heretofore possible. This sketch of the apparatus is printed herewith with the distinct under- standing that all “copyrights” as well as copylets are withheld. (Pat. Reg. U. S. P.‘ O. (Post Office.) Explanation will be seen on the sketch. In the event you cannot read it, send it back and we will read it to you. Page One Hundred Severity