Engineering Commons^™

Some Tests On The Grinding Of Cement Clinker With A Hardinge Conical Ball Mill, Gilbert F. Metz

Professional Degree Theses

"The Hardinge Conical Mill is the invention of Mr. H.W. Hardinge and has been fully patented by him. It has been used successfully in the grinding of ores, limestone, phosphate rock, feldspar and talc. The purpose of the tests in this thesis was to determine the worth and adaptability of the Conical Mill for the preliminary grinding of cement clinker and to determine the relative merits of this type of grinder as compared to the roll type of grinder. The tests herein were performed under the direction of the writer assisted personally and through correspondence by Mr. H.W. Hardinge of …

Measuring Silage And Capacity Of Silos, L. W. Chase

Nebraska Agricultural Experiment Station: Historical Circulars

The condition of the corn at filling time, the rate of filling, and the length of time settling has taken place before measuring the depth of the silage, all tend to cause variations in the weight per cubic foot of the silage and in the tonnage that can be placed in a silo. The greatest variation comes when very green corn or very ripe corn is used, and because of this it is possible that a cubic foot of green silage, which may weigh fifty pounds, holds no more dry matter than a cubic foot of overripe silage which weighs …

The Design Of An Eight Story Reinforced Concrete Warehouse, Walter W. Genrich

Bachelors’ Theses

The sole purpose of submitting this thesis, was not so much in trying to design a ware-house of ideal construction, but to · acquaint myself more or -less with the use of the formulas, tables and graphs, used in such a design, and at the same time getting a general idea on how to go about it.

Efficiency Test Of An Ingeco Kerosene Engine, Andrew Keiding

Bachelors’ Theses

The object of this test was to increase if possible the efficiency of an Ingeco Kerosene Engine manufactured by the International Gas Engine Company of Milwaukee, the engine being rated as 12 Horse Power at 275 revolutions per minute. The increase in efficiency was to be produced by heating the fuel and by introducing the exhaust gases into the combustion chamber.

Lake Shore Developments, Albert Theodore Bleck

Bachelors’ Theses

Along the shore line of Lake Michigan are bluffs approximately fifty to sixty feet high above the level of the lake. With the exception of approximately two or three miles, where the ground elevation is not much above the lake level these bluffs are almost continuous along the shore. This low land extends from a short distance north of Wisconsin Street to a short distance south of the Illinois Steel Company's plant. The territory north of Wisconsin Street to the City Limits is almost entirely residential and, therefore, cannot be considered favorably as regards to the location of a mnufacturing …

Underground Haulage, T. Roderick Noon

Bachelors’ Theses

The object of this discussion is to determine which would be the most economical and efficient of two forms of haulage, namely, mule and storage battery locomotive, based upon an output of four hundred and fifty tons of cleancoal per day, of eight hours.

The Design And Construction Of A Power Transformer, James M. Johann, George P. Nugent

Bachelors’ Theses

Usually one coil of the transformer has many more turns of wire than the other, when the coil of few turns is the primary, the transformer takes a large current at a low potential and delivers a smaller current at high potential. This is called a step up transformer. When the coil of many turns is the primary the transformer takes small current at high potential and delivers greater current at lower potential. This type is called a step down transformer.

Pump Irrigation In Nebraska, E. E. Brackett, O. W. Sjogren

Nebraska Agricultural Experiment Station: Historical Circulars

Before one decides to install a pumping plant for irrigating purposes there are a good many factors that should be considered regarding the feasibility of the project and the construction of the plant. The material contained in this bulletin has been obtained from studying pumping plants in actual operation in this and other states and from experience gained while installing plants in this state.

Chemical Control Work In The N. K. Fairbanks Factories, John Whittlesey Bodman

Professional Degree Theses

"We propose to discuss in this thesis the organization of the N. K. Fairbank Company, particularly with reference to the duties of the Chemical Division, Operating Department in this organization. From a broad viewpoint, we believe that the particular organization by with the N. K. Fairbank Company secures application of its chemical ability to manufacturing operations as well as to special problems, is characteristic of a widespread movement taking place for recognition of the chemical engineer in industry. This is particularly true in those industries where manufacturing operations are based primarily upon practical applications of chemical principles"--Abstract, page 1.

Descriptive Study Of The Petroleum Refinery At MinatitláN, GermáN GarcíA Lozano

Professional Degree Theses

"In order to reduce as much as possible the cost of transportation of the crude oil to the refinery, the city of Minatitlán of Minatitlán County in the State of Veracruz was chosen as the most proper place for establishing the refinery it being in the center of the only oil fields which at that time possessed the "Eagle Mexican Petroleum Co."--page 1.

The Goltra Process Of Concentrating Iron Ores As Developed At Waukon, Iowa, Ernest Wander

Professional Degree Theses

"The more or less impure iron bearing mineral occurs mixed with a very tenacious clay, in which are also found chert, cretaceous quartz pebbles, pockets of sand, masses of pebbles and sand cemented by hydrous iron oxide, (which in some cases partly replaces the silica) and several varieties of fossils, such as crinoids etc. The impurities mentioned are often an integral part of the ore particles, and are present in varying quantities thruout [sic] the deposit. But, besides the foreign matter which the eye can discern, the apparently pure mineral contains a varying percentage of silica and alumina, (as well …

Some Typical Bridges For Logging Railroad Construction, Frederick Hauenstein

Professional Degree Theses

"In some of the pine regions of the Ozark Mountains, a considerable portion of the country is rolling and rough, comprising a succession of hills and hollows. The most efficient method of logging such a tract is obtained by locating the logging road so as to secure a down grade haul for the logs, with consequent up grade return for the empty cars. This necessitates locating the main line of the railroad along the principal creek, and then laying spurs up the different tributary creeks as they are met. Such a procedure requires much crossing and re-crossing of creeks and …

Concentration Of A Joplin Slime By Flotation, Earl Joseph Weimer, Walter Harry Freudenberg

Bachelors Theses

"Concentration of the Joplin slimes by means of flotation is a subject receiving considerable attention at the present time, due to high price of zinc. These slimes are the accumulation of the finer particles of the ore during the milling process, and their zinc content is well worth considering. The practice in the past has been to sluice these slimes into the tailing pond, as no economical method of saving the zinc had been employed. The object of our experiment was to economically extract from these slimes by flotation, a product of sufficient zinc content to be of commercial value"--Introduction, …

Practical Details Of Mine Surveying In Certain Mines Of Northern Mexico, Arturo C. Fernandez

Bachelors Theses

"The name of this thesis is suggestive of its character. The writer has endeavored to resent in a general way some of the most important details of mine surveying as he has found them in actual practice. For the sake of uniformity the engineering staff in which he worked prepared a set of instructions to be used by the engineers at the various mines. The methods and illustrations described in this paper have been adapted from these instructions and they afford a thorough foundation ready to receive the minor details best adapted to each particular mining district"--Foreword, page ii.

Simple Methods And Tables For Determining True Meridian, Howard Jones Teas

Bachelors Theses

"The ordinary methods of determining the true meridian by observation on either Polaris or the sun are so tedious to calculate that most surveyors and students dread making them. Observation on Polaris at either elongation or clumination sic require less calculation and are much simpler, but this simplicity is offset by the fact that they must be taken at an exact instant. If a cloud crosses the sky at the time, the surveyor has to wait until the next night. then again the observer must know the date, exact longitude and latitude and correct time for making the observation, and …

Selective Concentration Of A Complex Ore By Flotation, Paul Frederick Pape, Ralph Dale

Bachelors Theses

"The problem of the Mining Engineer and Metallurgical Engineer who wishes to treat the slimes and fine sands of a complex ore is the recovery and separation of minerals so as to render a subsequent treatment of any mineral profitable. The minerals must be separated into groups which can be treated by different processes, because a combination of numerous minerals is extremely undesirable at the smelting plant. In a lead ore the presence of zinc often depletes its value to such an extent that it is unprofitable to treat it; likewise with other minerals and ores. Many systems of selective …

Concentration Of Ores By Flotation, John Gay Reilly, Frank Stillmann Elfred

Bachelors Theses

"Flotation is a new step in the separation of valuable minerals from gangue. This process has only been in commercial use for about six years. There has been several theories advances as to how the ore is concentrated, and the theory that is now usually accepted is that the oil covers or wets the sulphide mineral particle and does not the gangue; and this mineral particle, by means of induced aid is concentrated on the surface. The authors of this thesis have not attempted to explain the reason or reasons why minerals will float; but have accepted the theories advanced …

The Rise Of Temperature In Concrete While Setting, Chester L. Hoffman

Undergraduate Theses and Senior Projects

No abstract provided.

Operator's Instruction Manual: Case Va, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

A Thesis Submitted To The Faculty Of Marquette University, Lester James Myers

Bachelors’ Theses

Since the commerce of a country or city determines its position in the world of finance to such a great extent, it is natural to investigate the conditions which govern the country's or city's demand for its share of this commerce, and see if the natural location, and still does not receive its share of the commerce of the country, there is a decided chance for the investigation and removal of the obstacles which are the cause of this condition.

The Design Of A Twelve Story Reinforced Concrete Warehouse, A. M. Fromherz

Bachelors’ Theses

In submitting this design I do so with the one point in view, namely, to endeavor to determine when reinforced concrete becomes impractical for design purposes.

To produce a maximum condition of loading on the lower floors I have taken up the design of a warehouse which is to carry a live and impact load of 400# per sq. ft., plus the dead load on each of the twelve floors. This condition of loading is not practical for design, but it will produce our desired conditions.

From the design it can be readily seen that the columns become excessive in …

Proposed Bridge At Harbor Entrance In The City Of Milwaukee, Edwin J. Reichert

Bachelors’ Theses

The present city administration has placed itself on record as being in favor of an outer harbor. The outer harbor project shall consist of a series of docks and wharves, which eventually will extend all along the lake front South of Wisconsin St. and as far south as the Illinois Steel Company's plant.

With the realization of the outer harbor complete, arises a problem of conveying and transferring the immense quantities of freight which shall be unloaded at this outer harbor, which problem shall eventually be answered by building a network of railway tracks on a section of the six-hundred …

A Thesis Presented To The President And The Faculty Of Marquette University For The Degree Of Bachelor Of Science In Civil Engineering And Bachelor Of Science In Electrical Engineering, Anthony B. Czachurski, Benjamin D. Ratke, Joseph G. Casey, William H. Stephan

Bachelors’ Theses

In the work covered by this thesis it is desired to examine an undeveloped water power for the purpose of producing electrical energy as a commercial comodity. Experience has taught that it is best to ascertain first where the product will find its market, and to follow up a satisfactory showing at that end by determining the power capacity of the source, the feasibility of harnessing the same, and the cost of accomplishing this. This program would be adopted in any commercial enterprise to insure a reliable conclusion, and will be followed as closely as possible in the work covered …

The Decreasing Of City Garbage And Sewage Sludge, O. Henry Babcock

Bachelors’ Theses

At the present time there seems to be no general solution of the problem of garbage and sewage sludge disposal, and the chances are that there never will be. The problem in each city is different so that no set rule can be given that will apply to every city. Therefore it is an original problem with each city, governed by cer­tain conditions existing there.

Design Of A 12-Story, Structural Steel Building, Frank Lankauf

Bachelors’ Theses

The aim in writing this thesis has been to give as completely as possible, methods, data, and details for the design, of a twelve story, structural, steel building. The plan is one hundred and fifty-seven and a half by one hundred feet, with a fronting on two streets. As mentioned before, the building is twelve stories plus a basement or approximately one hundred and slxty feet above the sidewalk.

Transportation And Street Design And Its Application To The City Of Milwaukee, Eugene A. Howard

Bachelors’ Theses

No abstract provided.

Valuation Of Proposed Railroad From Grand Forks, N.D. To Bismarck, N.D. By Way Of Aneta And Carrington, Anthony Swendseid

Undergraduate Theses and Senior Projects

No abstract provided.

The Voice Of The Phi Sigma -- 1916 --, Phi Sigma

The Voice of the Phi Sigma

This item is part of the Phi Sigma collection at the College Archives & Special Collections department of Columbia College Chicago. Contact [email protected] for more information and to view the collection.

Preliminary Report On The Property Of The Ruby Copper Company, Colwell Arba Pierce

Professional Degree Theses

"The property of the Ruby Copper Company is located in Township 21 S., Range 15 E., near the southern end of the Santa Rita Mountains, Wrightson Mining District, Santa Cruz County, Arizona. It is reached by a good wagon road from the town of Pantagonia, which, because of its location on the Benson to Nogales Branch of the Southern Pacific Railroad, is the supply point for a large mining section--page 1.

Notes On Mine Operations Of The American Zinc Company Of Tennessee, Homer Kent Sherry

Professional Degree Theses

"The zinc ores mined at and near Mascot, Tennessee, are found in the upper part of the Knox dolomite which according to Keith was laid down in the middle Cambrian or Silurian age. This formation has a thickness of several thousand feet and is composed of layers of dolomite, limestone, sandstone, shale and some chert. The ore bearing portion at least is much folded with minor faulting and high brecciation. The axis of the folds lie Northeast by Southwest with the faulting in the same direction. The ore being mined is found on the Southeast dip in a fairly definite …