Central High School - Centralian Yearbook (Kansas City, MO)

 - Class of 1902

Page 84 of 126

 

Central High School - Centralian Yearbook (Kansas City, MO) online yearbook collection, 1902 Edition, Page 84 of 126
Page 84 of 126



Central High School - Centralian Yearbook (Kansas City, MO) online yearbook collection, 1902 Edition, Page 83
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Central High School - Centralian Yearbook (Kansas City, MO) online yearbook collection, 1902 Edition, Page 85
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Page 84 text:

other end into a large steel tank. From this tank this pasty substance, which is, in reality, nothing but very finely ground straw, runs through a gate, something like a sluiee box gate, onto an endless wire belt, called the papyrus web. A shaking motion from side to side is given to this web by machinery to spread the pulp even- ly over its surface. , This endless belt carries the pulp be- tween two rolls, made of hardened steel, where a great deal of the Water is pressed out, giving the pulp some body. It would not yet support its own weight, however, and is carried by an- other belt to which it is transferred between two more sets of rolls, where fu' most of the remaining water is pressed out, and the paper receives its final Compression. The paper must next be dried, and this must be done very quickly so as not to interrupt the sheet of paper as it eoines from the eompressing rolls. This is accomplished by passing the wet paper around a long line of large hollow steel cylinders, heated by steani. After the paper has passed over ten or twelve ot' these rolls, it is perfectly dry. Finally, after passing between eight sets of highly polished steel 1'olls, it is wound on steel bob- bins. It is then cut into desired lengths and stacked away in store rooms. P. J. N. J .U ,f XML .N-vt if ff M 84-

Page 83 text:

e to is it has iore. Izised ride, -veral the vrent arent , all it of rries ach arge, rbon reat n of rt in t did was tion. were ffeet icken e ef- these te the only n be that f the ment- same into Hrply It is ue of food depends in a great measure upon the ainount and the kind ot' elcetricitv it supplies. Siu-li is at least, Hip beiuif of Dr. Loch. lt this is found to be true, a revolution will indeed he et- fected, and electricity, with its owl. inqq-nasilig applications. flll'lllSlllll.Q' heal, power, light, and life itself, will prove to be superior to the rulers of this age, and in evolution the era fol- lowing the Age ot Man may he known as the Age ot' lflleetrieity. Eanm HAi.i.AR. The Manufacture of Wrapping Paper. HIC subject of paper mak- ing would till volumes if - anything like a complete, systematic explanation of the different processes was attempted. Wood. Q?1"lX".i grass, straw, cotton, rags and the pulp of the Egyp- f tian papyrus plant, are some of the fniulamental constituents from which this important article made. The finer grades are made al- together from rags, hemp and the papyrus plant, and the coarser grades, such as wrapping paper and that used for printing newspapers, from wood, fiber and straw. The purpose ot this article is to deserihe briefly the process of making eoninion wrapping paper. This style of paper is made from wheat straw, brought in by the tarm- ers after the wheat harvest is over. A good sized pile of this, making per- haps twenty or thirty tons, is dumped into a large wooden iat, and soaked in fresh lime water of m0fl0I'f1f0 strength. The ohject ot' the lime wa- ter is to produce a very rapid de- composition. .Xfter the soaking has continued until the straw is a wet, sog- gy mass, the lime water is drawn off, and the straw dumped into smaller vats. Here it is thoroughly soaked with lime water, and runs through a set ot rapidly revolving knives which cut it up into pieces almout an inch long. A stirrer is constantly kept go- ing in these vats to push the pulp against the knives. When the fiber has been passed through this set of knives three of four times, more water is added and the ground-up mass is drawn hy suc- tion into what is called the fine grinder. This machine consists of a funnel-shaped cylinder whose inside surface is covered with knives ot' flat steel. set about an inch apart and run- ning lengthwise. Inside of this cyl- inder fits a eore of solid wood, whose surface is likewise covered with knives. This core revolves at the rate of from 1100 to S00 revolutions a minute. The straw fiber, drawn in by suction, as described, flows into this grinder at the large end. and Corning into contact with the knives, is instantly ground into a thick paste, and flows out the mga--



Page 85 text:

sed ial and 3.5 EIS -lls. the rge by 'sed t is 'ing hed ob- ired tore Physics, lll'IN the lowly junior en, ters for the tirst time the lecture room and labora- tory of the physics depart- ment of our school, a cer- tain feeling of awe comes 1 over him. This feeling is not only caused by the gen- sp, .-uw . , U. , 3, 'es , ef' lla tm fm lsgfyggi eral bustling and business- like air of the room, but also by the objects whieh greet his eye. It seems strange to see all the dif- ferent kinds of apparatus in their glass eases, and one feels as if he were in an entirely new place other than the saine old Central 'High School, which he is so used to seeing. Physics, of eourse, is of most inter- est to boys, although the girls enjoy it too, and it is helpful in after life to both boys and girls. The daily reci- tations are conducted in the recitation or lecture room. lt is here that we learn all principles and laws pertain- ing to the study of the elements ot physics, having a few simple experi- ments performed before the class. Our laboratory work comprises experiments actually performed by ourselves, which prove the facts that we have learned in the lecture room. Our whole course is divided into three parts. Wlllfll PWC Molar Dynamics, Nloleeular llyI1Fl- mics and Ether Dynamics. The first im-lmleg the dynamies ol' tluitls and solids and also takes in the study of sound. The second includes the study of heat and the third that of light and electricity. All of this work is taken up in the lecture room and we then go to the laboratory and complete the experi- ments to our own satisfaction. Even with thc many dilytieultics which niust be encountered in a school like ours. the work in the laboratory has been done this year with almost eomplete satistaetien, both to our teacher and ourselves. Of course, we have not all of the necessary apparatus, and on ae- eount, of this some very interesting ex- periments have not been taken np. In eonneetion with this apparatus a word might be said concerning the physics shop. 'lt is surprising to find how few of the pupils know of the existence of this branch of the physics department, It is here that almost all of the appa- ratus used in the laboratory is made by boys from the various physics classes. The school board gave to the shop. this year, a new metal lathe of fifteen ineh swing, and also a large eirenlar saw. Of the work turned out in the shop this year, a lifting pump has been made by James Donovan, a fort-e pump by Will blaclaren. and several other pieces of apparatus hy Will Vooper, ltay Hoover, and myself. The largest piece of work attempted this year is the three-lnirse-power steam engine. which is being construct- 4.85,

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