Engineering Commons^™

A Study Of The Composition Of Zinc Complex Cyanide Solutions By The Conductometric Method, Robert James Woody

Bachelors Theses and Reports, 1928 - 1970

As the method or analysis used up to the present time has failed to give quantitative results in determining the composition of zinc cyanide baths, conductometric methods were adopted in this study. Supplementary tests were also carried out in this investigation.

The Leaching Of Electrodeposition Of Iron, Emmett G. Simmons

Bachelors Theses and Reports, 1928 - 1970

Electrolytic iron as deposited is brittle and therefore must be annealed. After annealing, the material is ductile and closely resembles copper in its behavior under work. It is claimed to be more resistant to corrosion than dead soft iron. It also has the advantage of corroding uniformly ( or­dinary soft iron develops pin holes which shorten its life considerably).

The extreme purity of electrolytic iron namely makes it very suitable as a base metal for alloys. Its ductility opens up a field for use in the manufacture of cold rolled strip, seamless tubes, and wire.

Fitting The Mechanical Refrigerator Into The Home, E. B. Lewis, M. P. Brunig

Nebraska Agricultural Experiment Station: Historical Circulars

Within the last five years the mechanical refrigerator has become a popular piece of household equipment. Its year-round use has caused architects and others interested in planning for the convenience of the housewife to recommend placing the new cabinet in kitchens and other convenient places, with little thought about the effect on the operation of the refrigerator. The purpose of this publication is to point out some of the conditions under which the refrigerator has been expected to operate successfully, and some of the effects of these conditions upon the operation of the machine.

Facing The Problem Of Traffic Congestion, William Forrestal

Bachelors’ Theses

Modes of transportation are constantly changing, and traffic, as well as its control, must be adapted to each new development.

Playgrounds And Recreation Areas In Real Estate Subdivisions, Joseph L. Doyle

Bachelors’ Theses

With the coming of the machine age, the need of adequate playground and recreation areas in large cities is steadily increasing. During the past ten years, or more, congested cities have found it necessary to supply at any cost, playground and. recreation areas, for their people, who from year to year find that they have more and more leisure time at their disposal. In an unlimited number of instances the only way this could be secured was by buying valuable land, wrecking the buildings thereon, and thus provide open spaces for recreation at an enormous cost to the city. Had …

History Of The Thermionic Tube, Mary Liguoria Urbin

Bachelors’ Theses

My interest in the field of physics being that of electricity, I have been permitted to pursue this thesis in the field of thermionics.

The thermionic tube is one of vital importance not only in the field of radiotelegraphy and radiotelephony, but is of great value in the field of engineering and a vast asset in university and college laboratories. In fact, its advent has opened up a new era in many fields. H. J. Van Bijl terms is a "versatile talking bottle." In a paper of this nature only the important features can be stressed, and even here much …

Some Problems In The Construction Of Artificial And Natural Gas Pipe Lines, Waring Mikell

Professional Degree Theses

"In 900 A.D. the Chinese piped natural gas through bamboo tubes and used it for lighting, and about 1830 artificial gas was carried by three inch wooden pipes in a town in New England. Today there are many thousands of miles of steel pipe bringing gas from Western fields to eastern cities, and many more miles of steel and cast iron pipe for the distribution of artificial and natural gas in the majority of the towns and cities in the United States. This paper will deal with the construction of acetylene welded steel pipe lines, and some of the problems …

The Location, Construction, And Maintenance Of The Rabbit Ears Pass Forest Highway, Julian Greenway Huckins

Professional Degree Theses

"The Bureau Public Roads, Department of Agriculture, has jurisdiction over the construction of, and Federal Aid Funds expended on, the Federal Aid Highways thruout the United States, Alaska, and Hawaii. It may not be generally known that the Bureau is also in direct charge of the location, construction, and maintenance of all National Forest Highways under the Department of Agriculture and all National Park Highways under the Department of the Interior. District No. 3 of the Bureau Public Roads, with headquarters in Denver, is composed of the States of Wyoming, Colorado, New Mexico, and the Black Hills Region of South …

Sewage Disposal Improvements At Pontiac, Michigan, Robert William Abbett

Professional Degree Theses

"The existing East Boulevard Sewage Disposal Plant consists of a set of bar screens, a grit chamber, a battery of three Imhoff tanks, eight trickling filter units, of the rotary-distributor type, and three secondary settling tanks. The plant was designed for a population of 52,500 in 1919 by Clarence W. Hubbell, Consulting Engineer. At the present time the plant shows evidence of loading beyond its capacity, the distress of the Imhoff tanks being particularly acute"--Present Sewage Disposal Facilities, page 5.

Aventurine Glazes, Felix Fraulini

Bachelors Theses

"The object of this study was to notice the effect produced upon the crystalline growth in the glaze by the variation of B₂O₃, Fe₂O₃, and SiO₂, and to notice the effect of cooling upon the crystalline growth in the glaze"--Scope of Investigation, leaf 3.

The Effect Of Variations In The Rate Of Heating On The P.C.E. Value Of Clays, Kenneth Emerson Evans

Bachelors Theses

"Softening temperature of ceramic materials vary with the rate of heating. Recently much discussion has centered about the proper rate of heating of cones in the P.C.E. test. The most obvious reason for the discussion is that the cones are affected by the rate of heating when tested alone for softening temperature"--Introduction, page 1.

A Comparative Study Of The American Society For Testing Materials Spall Test And The Federal Specifications Spall Test, Justus Jordan Beinlich

Bachelors Theses

"Commercial brands of fireclay brick will be tested with both the American Society for Testing Materials and the Federal Specifications Spall Tests in order to determine whether the two tests are consistent in the indication of resistance to spalling. It is suggested that the properties of a refractory affecting thermal spalling are reversible thermal expansion, elasticity, heat transfer, plastic flow, and strength. It is hoped that it will be possible to explain the discrepancies that may arise in the results of this work in terms of the above physical properties or else find a reasonable agreement between the two tests"--Introduction, …

Study Of The Substitution Of Barite For Barium Carbonate In A Whiteware Body Suitable For Brick Manufacture, Charles Edward Achuff

Bachelors Theses

"Some years ago a method of manufacturing white brick from Georgia Kaolin and apatite rock was developed. This was successful for supplying an attractive white brick to the southern trade, until difficulties were encountered in securing apatite rock of sufficiently high grade to insure the continuance of manufacture of the brick...With the foregoing facts at hand, a study was made of the utilization of an auxiliary flux to replace the apatite rock. A commercial brick was developed, wherein eight (8) per cent of this flux, with forty-two (42) per cent potters flint and fifty (50) per cent Georgia Kaolin was …

The Replacement Of Calcium Carbonate With Calcium Chloride And Calcium Fluoride In A Whiteware Body, Charles Richard Rosenbaum

Bachelors Theses

"In the steel industry it is a common metallurgical practice to add fluospar sic (CaF₂), to a slag to render it more fluid. Ladoo states that the fluospar sic , thus added, forms eutechtics with the silica, alumina, calcium and barium sulfates, rendering them more fusible. The fluospar sic does not decompose, but forms solutions or eutechtics with other substances in the slag. He further states that calcium chloride (CaCl₂) has been used for this purpose but is apparently not as active, necessitating larger quantities per charge. It is also probably more expensive. Calcium carbonate (CaCO₃) is commonly used as …

The Effect Of Reheating Certain Fire Brick On Pyrometric Cone Equivalents, Francis J. Louney

Bachelors Theses

"In a recent survey of the refractories field, especially with respect to the softening point of fire brick, it was suggested to the author that the possibility of reheating certain fire brick, according to the specifications given by the American Society for Testing Materials, might produce a difference in pyrometric cone equivalent from that of the original or unreheated sample. At present, there is considerable lack of knowledge regarding the problem, as evidenced by the utter lack of literature on the softening point resulting from the reheating of fire brick"--Introduction, leaf 1.

Quantitative Microscope Study Of The Flotation Products Of The Anaconda Copper Concentrator, A. M. Gaudin, H. B. Henderson

Bachelors Theses and Reports, 1928 - 1970

This paper presents the results of a quantitative microscope investigation of the flotation products of the Anaconda Copper Concentrator at Anaconda, Montana, undertaken in September 1930 under the terms of the Cornelius F. Kelley Fellowship. This fellowship was established at the Montana School of Mines by the Anaconda Copper Company.

The Effects Of Temperature And Pressure Variation On The Process Of Cooking Foods, Benjamin M. Aldrich

Electronic Theses and Dissertations

It is generally known that water has a definite boiling temperature for each pressure to which its surface is subjected and that wet steam generated in a closed vessel maintains a definite temperature-pressure relation. Under each condition of temperature and pressure the steam contains a fixed amount of available energy stored as heat and called, "Heat Content" the value of which is usually based upon an arbitrary zero fixed a 32 degrees F., the freezing temperature of water under one atmosphere of pressure.

Test 212: Mccormick-Deering Farmall "F-12", Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 213: Caterpiller Model 70, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 215: Allis-Chalmers Special K, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 214: Caterpiller "Diesel 50", Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 217: Caterpiller "Diesel 35", Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 220: Mccormick-Deering Farmall "F-12" (Kerosene), Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 219: Massey-Harris "3-4 Plow", Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 216: Allis-Chalmers Model M, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

A Plant Efficiency Survey And Experimental Plant Results Obtained At The Sioux Falls Sewage Treatment Plant, Sioux Falls, S.D., Lowell A. Yost, Hans Jepson

Electronic Theses and Dissertations

"Sioux Falls, the largest city in South Dakota is situated on a bend in the Sioux River. The flow of this river ranges from a recorded minimum flow or 9 to a maximum flood flow of 500 cu. ft. per second. As originally designed and built the sewage system emptied into the river at three main outlets. In 1910 the City had a population of approximately 14000 people, and during the next decade its population practically doubled. During this period of growth there was added to the industries of the City a large meat packing plant which has been steadily …

Test 218: Caterpiller "Diesel 75", Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

A Study Of The Evaporation Of Organic Liquids And Mixtures Of Organic Liquids, George Walter Eckert

Masters Theses

"The purpose of this thesis is to make a study of the evaporation of organic solvents. The relative rates of evaporation of the single substances and binary and ternary mixtures are to be considered. A study of the changes in composition of binary and ternary mixtures that occur on evaporation are to be made. Information on the evaporation of organic liquids is important in relation to lacquers, and for that reason the solvents used in this work are liquids commonly used in making lacquers"--Introduction, page 2.

A Method For Increasing The Iodine Value Of The Saturated Fatty Acids, Richard Groves Holmes

Masters Theses

"The work covered by this thesis was undertaken with the idea of finding a method whereby unsaturated oils, of the drying type (those having iodine values of one hundred fifty or above), could be made from the saturated fatty acids. After an exhaustive search of the literature no evidence was found that this means of producing the unsaturated acids had ever been developed. Work has been done on the chlorination products of the fatty acids, the processes being covered by patents. No evidence however was given as to the possible structure of these compounds"--Introduction, page 1.

The Relation Between The Mean Molecular Weight And The Absolute Viscosity Of Lubricating Oils, John Isler Moore

Masters Theses

"Of all the properties required of a good lubricant the most important is that of the viscosity at the temperature of its use. Most lubricants consist of oils blended or compounded together in such a way as to produce an oil of a desired viscosity, falling in the special group of viscosities expressed by the Society of Automotive Engineers in their tabulations.

There have been several methods developed to enable the refiner to blend quickly and efficiently although Bell stated that the methods were largely that of trial and error. Herschel formed a chart for blending by the logarithmic rule …