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Articles 195421 - 195450 of 196009

Full-Text Articles in Engineering

Drill Steel Investigation, Richard J. Stroup, Kurt H. De Cousser Jan 1922

Drill Steel Investigation, Richard J. Stroup, Kurt H. De Cousser

Masters Theses

"

Purpose of Investigation

To determine the best composition of a straight carbon drill steel for drilling in granite.

Method of Investigation

  1. Obtain several brands of standard grade drill steel. Determine analysis and transformation points of each.
  2. Determine that heat treatment which gives the best drilling qualities in granite.
  3. Determine the micro-structure of such steel.
  4. Obtain steel of a certain specified composition considered best for the conditions and compare the results on this steel with the results obtained on the market products.
  5. Design of heating furnace for forging steels.

It will be observed from what follows that this outline was …


Drill Steel Investigation, Joseph Herman Rohloff Jan 1922

Drill Steel Investigation, Joseph Herman Rohloff

Masters Theses

"Several brands of standard grade drill steel were obtained [and tested]"--page 1.


High Speed Steel - Its History, Development, Manfacture, Metallography, And Constitution, Including An Extended Bibliography, James Presley Gill Jan 1922

High Speed Steel - Its History, Development, Manfacture, Metallography, And Constitution, Including An Extended Bibliography, James Presley Gill

Masters Theses

"There is no doubt but that the making of Steel was known and practiced by the early Greeks probably several centuries before the birth of Christ. There have been discoveries of pre-historic forges and smelters evidently used for the making of iron and steel and it is certain that implements made of these materials dates back to antiquity. As to the methods of making the steels of antiquity there is little known, but it is quite probable since iron has a strong affinity for carbon that in the forging of the iron it's contact with the carbonaceous fuel would absorb …


A Report On "Relieving Traffic Congestion On The Southern Pacific Between Oregon City, Oregon And Woodburn, Oregon.", Henri Chomeau Dec 1921

A Report On "Relieving Traffic Congestion On The Southern Pacific Between Oregon City, Oregon And Woodburn, Oregon.", Henri Chomeau

Missouri School of Mines and Metallurgy Reports

The Division Engineer of the Portland Division, Southern Pacific Company, ordered the Signal Supervisor of the same division, to devise some improvements in the signal system in order to make train movements between Oregon City, Oregon and Woodburn, Oregon more rapid and relieve congestion over this part of the single-track steam line. The following system has been worked out by the Signal Department.


Test 654: Ford 851-D, Nebraska Tractor Test Lab Nov 1921

Test 654: Ford 851-D, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT:

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 B: The throttle …


Sewage Disposal Of The City Of Milwaukee With Experimental And Construction Features, Walter W. Genrich Jun 1921

Sewage Disposal Of The City Of Milwaukee With Experimental And Construction Features, Walter W. Genrich

Bachelors’ Theses

The City of Milwaukee, for a good many years has been confronted with the big problem of sewage disposal, in asmuch as the sewage up to the present time has been allowed to flow into its rivers which in turn emptied into Lake Michigan from which the City obtained its water supply, and consequently contaminated its surrounding waters to such an extent that the City's public health was very much at stake.


Sewer System More Than A Million Years Old, Department Of Library Special Collections May 1921

Sewer System More Than A Million Years Old, Department Of Library Special Collections

Research Collections

Article about the sewer system in early Bowling Green that used fissures in the limestone as a natural sewer; it then flows out to the river. Henry Jameson is shown and an outcropping of oolitic limestone in Reservoir Hill park.


The Nebraska Tractor Law And Rules For Official Tractor Tests, O. W. Sjogren, E. E. Brackett, C. W. Smith, F. R. Nohavec Apr 1921

The Nebraska Tractor Law And Rules For Official Tractor Tests, O. W. Sjogren, E. E. Brackett, C. W. Smith, F. R. Nohavec

Nebraska Agricultural Experiment Station: Historical Circulars

The Nebraska Tractor Law, which became effective July 15, 1919, was enacted to encourage the manufacture and sale of improved types of tractors and to contribute to a more successful use of the tractor for farming. It was thought that the best method of accomplishing these objects would be to require a tractor of each model sold in the State to be tested at the State University and to have the results of these tests made public.


Automobiles Displace Trolley Line In Old Southern City, Department Of Library Special Collections Apr 1921

Automobiles Displace Trolley Line In Old Southern City, Department Of Library Special Collections

Research Collections

No abstract provided.


Investigations To Determine A Possible Source Of The Carboniferous Sandstone Of The Ozark Region, John Hyer Bowles, Lewis Ely Davidson, William Ferdinand Netzeband Jan 1921

Investigations To Determine A Possible Source Of The Carboniferous Sandstone Of The Ozark Region, John Hyer Bowles, Lewis Ely Davidson, William Ferdinand Netzeband

Bachelors Theses

"In preparing this thesis the object has been to determine, by comparisons, a possible source of the Carboniferous sandstones. It is perfectly obvious that the material came from some older formation. Considering all the possible sources from which the Carboniferous sandstone could have originated, we, have the Pre-Cambrian igneous rocks of the St. Francois Mountains, the basal Cambrian sandstone or the La Motte formation, the Roubidoux formation (chiefly sandstone), and the St. Peter formation (essentially sandstone)--Introduction, page 4.


A Report On Drill Steel Wear At Isle Royale Mine, Houghton, Michigan, James Joseph Dowd Jan 1921

A Report On Drill Steel Wear At Isle Royale Mine, Houghton, Michigan, James Joseph Dowd

Professional Degree Theses

"In 1917 the miners at the Isle Royale Copper Company's mines were constantly complaining about poor drills and an investigation was made to discover any reasons for the complaint"--page 1.


Flotation Tests On A Table Sludge From The Golden Rod Milling Company At Tar River, Oklahoma, William H. Kamp Jan 1921

Flotation Tests On A Table Sludge From The Golden Rod Milling Company At Tar River, Oklahoma, William H. Kamp

Professional Degree Theses

"The purpose of this experimental work is to give to the operators of the Joplin District some facts concerning the possibilities of flotation in their district. An attempt will be made to show that high-grade concentrates can be made economically; also that the usual gravity concentration. It is believed that the oil and reagent used will not put a prohibitive cost burden upon the operators. It is, of course, realized that flotation concentrates of any zinc tenor bear a penalty because of the fineness of the product"--Introduction, page 3.


A Complete Coal Mine Survey, Harry A. Kluge Jan 1921

A Complete Coal Mine Survey, Harry A. Kluge

Professional Degree Theses

"As an introduction to this thesis, it would probably be well to give the laws of the State of Illinois relative to mine maps. These laws come under "An Act to revise the laws in relation to the coal mines and subjects relating thereto, and providing for the health and safety of persons employed therein. Approved June 6, 1911, inforce July 1, 1911. leaf 1911, page 388." Section 7 reads as follows: (a) The operator of every coal mine in the State shall make, or cause to be made, an accurate map or plan of such mine, drawn to a …


A Discussion Of The Geological Department Of An Oil Company. Part Ii. Report On Structure North Of Ochelata, Washington Co., Okla., Lawrence Joseph Zoller Jan 1921

A Discussion Of The Geological Department Of An Oil Company. Part Ii. Report On Structure North Of Ochelata, Washington Co., Okla., Lawrence Joseph Zoller

Professional Degree Theses

No abstract provided.


The Heat Treatment Of Cast Steel, Fred Grotts Jan 1921

The Heat Treatment Of Cast Steel, Fred Grotts

Professional Degree Theses

"Owing to many difficulties reported from the battle fields of France also from many sections of the United States, Mexico, Africa and South America relative to the functioning of the "Caterpillar" track an intensive research was begun early in the spring of 1919 to develop or perfect a material that could be made into intricate forms and which would have such physical properties as would withstand to a maximum degree, the abrasive action of rock and sand while at the same time having a high tensile strength and resistance to shock. A further requisite was that this material must be …


The Manufacture Of Sulphuric Acid By The Chamber Process At Isabella, Tennessee, Albert Leo Trent Jan 1921

The Manufacture Of Sulphuric Acid By The Chamber Process At Isabella, Tennessee, Albert Leo Trent

Professional Degree Theses

"As the regions surrounding the smelteries are growing more densely populated, the companies operating in these districts find if necessary in many cases to take care of their waste gases which are injurious to the surrounding vegetation and thereby avoid many expensive lawsuits and claims from the land owners in the district...The smelters at once began to look around for some method of taking care of their fumes...The companies then began to install the more expensive process of handling their fumes by adding a sulphuric acid plant to their smeltery. This is very expensive to install but is not only …


Investigations To Determine A Possible Source Of The Carboniferous Sandstone Of The Ozark Region, John Hyer Bowles, Lewis Ely Davidson, William Ferdinand Netzeband Jan 1921

Investigations To Determine A Possible Source Of The Carboniferous Sandstone Of The Ozark Region, John Hyer Bowles, Lewis Ely Davidson, William Ferdinand Netzeband

Professional Degree Theses

"In preparing this thesis the object has been to determine, by comparisons, a possible source of the Carboniferous sandstones. It is perfectly obvious that the material came from some older formation. Considering all the possible sources from which the Carboniferous sandstone could have originated, we, have the Pre-Cambrian igneous rocks of the St. Francois Mountains, the basal Cambrian sandstone or the La Motte formation, the Roubidoux formation (chiefly sandstone), and the St. Peter formation (essentially sandstone)"--Introduction, page 4.


Test 073: Wetmore 12-25, Nebraska Tractor Test Lab Jan 1921

Test 073: Wetmore 12-25, 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 074: Huber Super 4 15-30, Nebraska Tractor Test Lab Jan 1921

Test 074: Huber Super 4 15-30, 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 …


The Mexican Oil Fields, Raul Chavez Jan 1921

The Mexican Oil Fields, Raul Chavez

Professional Degree Theses

"Owing to the large area involved in this paper it is proposed to give only briefly the history, geology and development of the oil industry in Mexico, as well as to discuss in a general way the present oil legislation which has brought so much comment in the papers and has raised to much diplomatic trouble between the Mexican and United States Governments. This discussion is therefore of a brief nature and only the most culminant features and details of the subject in mind are here treated. The information and data here given were accumulated during personal examination of the …


Geologic Conditions Affecting The Accumulation Of Oil And Gas In The Beggs District, Oklahoma, John Charles Miller Jan 1921

Geologic Conditions Affecting The Accumulation Of Oil And Gas In The Beggs District, Oklahoma, John Charles Miller

Professional Degree Theses

"It is generally accepted that there is lack of parallelism between surface and subsurface beds and between the productive sands in the Beggs District, a condition similar to that which obtains in the Cushing Field. The explanation of this condition as given on page 31, Bulletin 658, U.S. Geological Survey, is: 1) The difference in resistance to compression of the hard and soft beds of which the formations of the Cushing Field are composed; 2) The lenticular form of the Bartlesville sand (the equivalent of the Glen; Gas of Morris pool); 3) One or more unconformities between surface beds and …


Mine Surveying In The Missouri Coal Fields, Edgar C. M. Burkhart Jan 1921

Mine Surveying In The Missouri Coal Fields, Edgar C. M. Burkhart

Professional Degree Theses

"The mines surveyed and included in this thesis are certain mines in the foremost and second largest producing counties in the state, namely Macon and Adair county. This thesis also includes surveying at one mine in Randolph County ... The mines included in this thesis operate mainly in the Bevier bed. This seam contains an average of 41 inches of coal in Adair County and is somewhat thicker in Macon and Randolph County. All mines in the Bevier bed are operated on the room and pillar system of mining with about 50 to 60 percent extraction in Adair County and …


Investigations On Oklahoma Chats, Homer Chalmers Kerr, August Francis Delaloye Jan 1921

Investigations On Oklahoma Chats, Homer Chalmers Kerr, August Francis Delaloye

Bachelors Theses

"That the tailings piles of the Joplin and the Oklahoma zinc mining fields contain zinc in commercial quantities is a known fact. Realizing this fact, a number of experiments were performed to determine whether or not this zinc could be extracted. The chats for this work were obtained from the Fort Worth Mill at Pitcher, Oklahoma"--Introduction, page 1.


Nebraska Test Special A: Shaw-Enochs Tractor Co. Shawnee Power Patrol, Nebraska Tractor Test Lab Jan 1921

Nebraska Test Special A: Shaw-Enochs Tractor Co. Shawnee Power Patrol, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …


An Experimental Study Of The Cathode Fall In Helium And Argon With Wire Cathodes, L. G. Raub Jan 1921

An Experimental Study Of The Cathode Fall In Helium And Argon With Wire Cathodes, L. G. Raub

University Studies (University of Nebraska) (1888–1984)

It was recognized rather early in the study of the phenomena of discharge of electricity through gases that the ordinary laws of conduction as found in solid and liquid conductors are not applicable to gases. It was shown by Zeleny and independently by Child that Ohm's law by no means represents the distribution of potential between electrodes in an ionized gas, but that the potential gradient is large in the vicinity of the electrodes, and not uniform throughout the space between them. When the pressure of the gas surrounding the electrodes is reduced to one or two millimeters and a …


Test 070: Minneapolis 17-30, Nebraska Tractor Test Lab Jan 1921

Test 070: Minneapolis 17-30, 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 071: Avery 12-25, Nebraska Tractor Test Lab Jan 1921

Test 071: Avery 12-25, 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 …


Test075: Lauson 12-25, Nebraska Tractor Test Lab Jan 1921

Test075: Lauson 12-25, 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 076: Best 60 35-55 H.P., Nebraska Tractor Test Lab Jan 1921

Test 076: Best 60 35-55 H.P., 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 077: Best 30 18-30 H.P., Nebraska Tractor Test Lab Jan 1921

Test 077: Best 30 18-30 H.P., 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 …