Engineering Commons^™

Test 194: Mccormick Deering Industrial Model 20, 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 189: Allis-Chalmers "All Crop", 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 190: John Deere Gp, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT: John Deere GP

TEST A: The manufacturer's representative operates the tractor for a minimum of 12 hours using light to heavy drawbar loads in each gear.

This serves as a period for limber up, general observation and adjustments. Adjustments that are permissible include valve tappet clearance, breaker ,point gap, spark plug gaps, clutch and others of a similar nature. No new parts or accessories can be installed without having mention made of it in the report. No data' are recorded during this preliminary run except the time that the engine is operated.

BELT HORSEPOWER TESTS

TEST …

Test 191: Massey-Harris "General Purpose", 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 192: Bradley "General Purpose", 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 197: Minneapolis- Moline Universal Model Mt, 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 198: Mccormick-Deering Farmall "F-30", 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 199: Mccormick-Deering "Tractractor", 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 Qualitative Study Of Arsine And Stibine Reactivity Toward Inorganic Salts In Certain Solvents, John Edgar Antener

Masters Theses

"The effects of arsine and stibine on some substances have been investigated by various workers and recorded without any attempt at systematic classification. In this work a more comprehensive study of the precipitating effect of arsine and stibine on common inorganic salts in certain solvents, namely, water, ethyl alcohol, ethyl ether, acetone, carbon disulphide, carbon tetrachloride, chloroform, and benzene has been made, with an attempt at reactivity classification"--Introduction, page 1.

A Study Of Anode Corrosion And Its Influence On Cathode Purity In Electrolytic Zinc Production, Harold John Roesser

Masters Theses

"Anode corrosion is a problem with which electrolytic zinc producers have been concerned from the beginning of the practice. It has been attacked here from the view of modern practice, using alloyed anodes"--Introduction, page 1.

Flotation Of A Western Complex Ore, Guy Verdier Martin

Masters Theses

"The flotation of the complex sulphide ore, which is the subject of this investigation, has been in progress on a large scale for several years. As the operation has been successful it follows that the ore dressing methods have been developed in much detail. For further improvements an intense investigation is required. The complex nature of the ore opens many avenues of research along some of which clues may be found that will lead to ultimate savings. It is along a few of these avenues that this investigation has been directed. Hence an effort was made to add to the …

Comparison Of Results Obtained On Ores From The Tri-State Zinc-Lead District After Grinding To Different Sizes And Concentrating By Flotation, Hans Maucher

Masters Theses

"The purpose of this investigation is to compare the phenomena observed in concentrating a zinc ore by flotation, using a constant and new flowsheet as described a few pages later and varying only the sizes to which the headsamples are ground previous to each test"--Summary, page 1.

Wind And Earthquake Stresses In Tall Buildings, Henry A. Reynolds

University of the Pacific Theses and Dissertations

With the increasing cost of land in the modern city it has been necessary to expand upward rather than on the surface. The result has been to concentrate commercial and industrial enterprises in small areas whose influence is felt over the entire world. Notable examples are New York and Chicago. In these developments the engineer has played no small part. It is claimed by some that the maximum economic height has been reached at a thousand feet. However, both the Chrysler and Empire State Buildings have slightly passed this mark. It is not improbable that even taller buildings then these …

The Use Of A Small Electric Motor In Silo Filling, E. E. Brackett, E. B. Lewis

Nebraska Agricultural Experiment Station: Historical Circulars

Filling a silo 30 feet or more in height with a motor as small as five horsepower has been looked upon in general by Nebraska farmers as an impractical, if not impossible, procedure. The practice is not unheard of in other states, and certainly the possibility of avoiding the large tractor-driven cutters and the large crews will be welcomed by those who have available service from power lines.

Electrodeposition Of Rubber Upon An Electrode By Means Of A Direct Current Of Electricity, L. F. Novotny

Bachelors’ Theses

The rubber industry may be said to be one of the most speedily developed industries in the world. This is due to a great extent to the fact that the first real interest in rubber as a material of commerce came in the advent of the automobile. It was in 1888 that an Irish horse doctor, John Boyd Dunlop, conceived the idea of tying a rubber tube around the wheels of his little son's velocipede. Within seven years of this event, a $25,000,000 corporation was manufacturing Dunlop tires.

Something may also be said here of the man who took the …

A Study Of Kerosene Cook Stoves, Edna B. Snyder

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The purpose of this study was to learn the advantages and disadvantages of various types of kerosene cook stoves used in Nebraska. Kerosene cook stoves have burners of four types. Ten stoves representing the four types were studied as follows: four stoves having long-chimney wick burners; three stoves having short-chimney wick burners; two stoves having short chimneys with asbestos kindlers or lighting rings; one stove having wickless burners. To determine comparative performance of the four types of burners, they were tested for: (1) time required to heat a known quantity of water through a known range of temperature; (2) thermal …

The Electrical Resistance Of Metals And Alloys In Their Hard And Soft States, Noah David Gerchesvky, Charles Becker Hoskins

Bachelors Theses and Reports, 1928 - 1970

It is known that the electrical resistance of annealed metals is usually smaller than that of metals in their cold worked state. The curve showing the relation between electrical resistance and annealing temperature reaches a minimum; continued annealing at higher temperature produces an increase in the electrical resistance. In the case of alloys it has been noted that a second decrease occurs at higher annealing temperature.

The following work corroborates the observance of previous investigations. The electrical resistance of cold worked copper, gold, nickel, and iron decreased with annealing and then increased, the minimum being around 300° C. or 400° …

Comparison Of Moe's Scale Of Hardness With The Rockwell, Brinell, And Scaleroscope Scales., Herbert William Hard

Bachelors Theses and Reports, 1928 - 1970

Moe's scale of hardness as used in mineralogy is admittedly rather indefinite, and no exact hardnesses are measured. The Rockwell, Brinell, and Scaleroscope machines give quite definite results which may be easily reproduced at any time.

The purpose of this investigation is to determine whether any definite relation exists between Moe's hardness and the hardness as measured by those machines commonly used for the determination of hardness of metals. If such a relation were found it would provide a more definite and accurate measure of the hardness of minerals.

Constitution And Specific Gravity Of The Ternary Mattes Cu2S-Sb2S3-Pbs, Herbert William Hard

Bachelors Theses and Reports, 1928 - 1970

The constitution of the ternary mattes Cu₂S PbS Sb₂S₃ has never been completely investigated nor has there been any attempt to draw the complete ternary diagram. The following work is intended to [be] a contribution towards completion of this diagram by determining the specific gravity of different mattes and by pointing out some which show peculiarities of structure.

Pipes In Steel Ingots As Exemplified By Casting Wax, Herbert William Hard

Bachelors Theses and Reports, 1928 - 1970

This paper presents some experimental data on the size and position of pipes steel ingots as exemp1ified by casting wax under various conditions and noting the size and location of the pipes formed.

The results tend to show that the length of the pipe is decreased by:

1. Slow casting

2. By casting large end up instead of down

3. By retarding the cooling of the top

The Effect Of Cobalt Upon Current Efficiency In The Electrolysis Of Zinc Sulphate Solutions, Joseph Newton, Louis Sanders Nuckols

Bachelors Theses and Reports, 1928 - 1970

The detrimental effect of the presence of cobalt upon the current efficiency, in the commercial production of zinc by electrolysis, has been recognized for some time. Most authorities differ upon the maximum amount of cobalt allowable. This is due to the fact that the presence of other impurities either increases or diminishes the detrimental effects of the cobalt.

The following tests were made with the object in view of ascertaining the relation, if any, between the amount of cobalt present and the current efficiency during the electrolysis of an otherwise pure zinc sulfate solution.

The results obtained from these observations …

Address Of The Hon. Maurice H. Thatcher, Delivered Before The Alumni Association Of The University Of Alabama, Kentucky Library Research Collections

Research Collections

Item from the Congressional Record with remarks by Maurice H. Thatcher, a member of the U.S. House of Representatives from Kentucky's 5th district; he was also a member of the Isthmian Canal Commission and governor of the Canal Zone from 1909 to 1913 as well as general counsel for the Gorgas Memorial Institute of Tropical and Preventative Medicine, Inc. Thatcher discusses the history and significance of the canal, General Gorgas and General Sibert, the building of the canal, the French Attempt, and completion of the construction.

Economic And Engineering Study For The Rehabilitation Of An Obsolete Factory Area, William E. O'Brien

Bachelors’ Theses

The first example of City Planning in America was the laying out of the National Capital by the French Engineer L’Enfant. The next attempt at grouping of buildings extends .back at least to the World's Fair in Chicago. Following this, contributions to¬ ward better and broader planning were made by an organized group of architects, engineers, and landscape architects. This was followed by studies of better housing facilities, the forming of the Outdoor Art Association and the American League for Civic Improvements, both of which were later merged into the American Civic Association.

Road And Bridge Department And Jacksonville-St. Johns River (Toll) Bridge, Board Of County Commissioners Of Duval County, Florida

Books

A report by the Board of County Commissioners of Duval County Florida issued January 15, 1930, it includes statistics for roads: fund expenditures, maintenance costs, construction costs, maintenance cost of convicts, building costs, cost of shell and bonded indebtedness. It also includes statistics for the bridges and Toll bridge including expenditures, bonds, financial statements, bridge permits and toll permits. Arthur N. Sollee Collection - M84-1 Box 14 fold. 65a. PALMM

The Lead And Zinc Deposits In The Sedimentary Rocks Of East Tennessee And Southwest Virginia, Joseph Hugh Reid

Professional Degree Theses

"In its geographic and geologic relations this area forms a part of the Appalachian province, which extends from the Atlantic Coastal plain on the East to the Mississippi lowlands on the West and from Central Alabama to Southern New York. All parts of the region thus defined have a common history recorded in its rocks, its geologic structure and its topographic features"--Geography, page 1.

Producer Gas Practice In The Steel Industry, Horace Wilfred Hodges

Professional Degree Theses

"The sources of energy for the industries are: 1. Water power; 2. coal, lignite, peat and Wood; 3. Natural and Artificial Gas; 4. Oil; 5. The Sun;s Rays; 6. The tides. The latter two sources may be eliminated from immediate practical use, owing to their cost and limited application. Therefore, the burden for many years will rest upon Water power, coal, gas and oil. We may also eliminate water power from the source of energy of the steel industry, due to the Mill's geographical location. Hence, for the near future, the steel industry's soul rests upon the production of coal, …

An Engineer's Report Of A Lead And Zinc Mining Property, Ernest Moran

Professional Degree Theses

"Gentlemen: Pursuant to your request, I have analyzed and classified the data relative to the Van Buren Mine of the Lucky Syndicate Mining and Smelting Company and beg to submit the following report. The lease is a lead and zinc mining property consisting of eighty (80) acres more or less..."--Letter to the Wright Mining & Royalty Co Miami, Oklahoma, dated December 9, 1929.

Data For Standard Curve Chord Steel Roof Trusses., William Hewitt Bush

Professional Degree Theses

"In the past the Engineering Department of the structural steel company, by which the writer is employed, has been troubled with having to make a large number of preliminary steel truss designs for the purpose of estimating weights for competitive bids on structural steel building contracts. In order to eliminate this expenditure of time, a study was made of the possibility of making a standard design for curved chord steel roof trusses that would give the desired information by observation"--Truss Design, page 5.

Longface And Longwall Mining Methods Being Tried In Oklahoma Coal Fields, Earl Hollinger Mcalpine

Professional Degree Theses

"Of a number of long wall and long face mining methods in use in Oklahoma mines at this time, I shall outline four in this paper. Two of these methods are in use in mines which are comparatively level. The first of these is in the Kali-Inla mine near Hartshorne. The second is in the Milby-Dow Coal Company mine at Dow. The Mullen Coal Company mine near McAlester and the Hailey-Ola Company mine near Lutie are steep pitching mines"--page 1.

Geology Of Mohave County, Arizona, Earl Ross Householder

Professional Degree Theses

"Diamond Creek canyon is located in the eastern part of Mohave County and opens into the Colorado River. Limestones and sandstones of Carboniferous age are abundently [sic] exposed therein"--page 6.