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Articles 158131 - 158160 of 158558

Full-Text Articles in Engineering

Structural Material Requirements In Municipal Building Codes, August Wilhelm Gleason Jan 1915

Structural Material Requirements In Municipal Building Codes, August Wilhelm Gleason

Bachelors Theses

"An examination of the various Building Codes and ordinances of American cities shows some little variation in requirements and specifications for structural Each writer or engineer, to whom has been assigned the task of preparing the several codes, has had individual theory or rule which he embodies in the work while holding in the main to the generally accepted provisions. It is for the purpose of comparing the variations in the different codes with the hope of deducing what might be considered as standard practice, that this investigation has been started"--page 4.


The Design Of A Reinforced Concrete Arch Highway Bridge, Clinton Dewitt Smith Jan 1915

The Design Of A Reinforced Concrete Arch Highway Bridge, Clinton Dewitt Smith

Bachelors Theses

"The Subject of this theses is the Design of a Reinforced Concrete Arch Highway Bridge. In making the Design the crossing of South River Street, Austin Minn., was taken as the hypothetical location of the bridge and the design made with reference to the requirements of this location. These requirements are no more than those for an ordinary rural highway bridge. While in the city of Austin it is not in the route of travel to and from the depots and is hence not subjected to the loads due to heavy freighting. There is however a heavy rural traffic, this ...


Rocket Apparatus, Robert Goddard Jul 1914

Rocket Apparatus, Robert Goddard

WPI Innovations

This invention relates to a rocket apparatus and particularly to a rocket apparatus adapted for carrying explosive signals, cameras, recording instruments or other devices to unusually high altitudes.


Rocket Apparatus, Robert Goddard Jul 1914

Rocket Apparatus, Robert Goddard

WPI Innovations

"This invention relates to a rocket apparatus and particularly to a form of such apparatus adapted to transport photographic or other recording instruments to extreme heights. Certain features of the invention are also applicable to the display of signals or to the project of explosives."


The Voice Of The Phi Sigma -- 1914 --, Phi Sigma Jan 1914

The Voice Of The Phi Sigma -- 1914 --, 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 archives@colum.edu for more information and to view the collection.


Ordenanzas De Construcción Para La Ciudad De La Habana Y Pueblos De Su Término Municipal, Aurelio Sandoval Y García Jan 1914

Ordenanzas De Construcción Para La Ciudad De La Habana Y Pueblos De Su Término Municipal, Aurelio Sandoval Y García

Cuban Law

(Vigentes para las Poblaciones de Cuba). Brevemente anotadas y comentadas.

4a edición.


Amalgamation And Refining Of High Grade Silver Ores Containing Arsenic And Antimony, Edwin Bryant Thornhill, Robert Emmett Dye Jan 1914

Amalgamation And Refining Of High Grade Silver Ores Containing Arsenic And Antimony, Edwin Bryant Thornhill, Robert Emmett Dye

Professional Degree Theses

"The advantage of shipping refined silver bullion over the shipment of concentrate to a smelter has been apparent to mine operators in this district for years but not ill recently was the project undertaken by the Buffalo Mine Limited, Cobalt, Ont., Canada. Early in 1912 experiments were conducted by H. G. S. Anderson with this end in view. The results of these experiments led to the erection of an amalgamation plant, the design and construction of which was carried out by Mr. Anderson...It is not the hope in this paper to set forth facts that are entirely new as ...


Methods Of Prospecting And Estimating Ore Bodies Of The Wisconsin Zinc And Lead District, Guy Henry Cox Jan 1914

Methods Of Prospecting And Estimating Ore Bodies Of The Wisconsin Zinc And Lead District, Guy Henry Cox

Professional Degree Theses

"The stratigraphy and structure of the Wisconsin Zinc and Lead District are remarkably simple; so simple in fact that one is liable to under estimate their importance in relation to the ore deposits. But four formations are of interest to one operating in this district, all of which are Ordovician in age and which in ascending order are, - the St. Peter sandstone, the Platteville limestone, the Galena dolomite, and the Maquoketa shale"--Geology - Stratigraphy - General, page 1.


Tests Of Rock Drill Bits For Water-Leyner Machine, Riley Marsh Simrall, Edmond Otis Stoliker Jan 1914

Tests Of Rock Drill Bits For Water-Leyner Machine, Riley Marsh Simrall, Edmond Otis Stoliker

Bachelors Theses

"The above investigation was made in the Mining Laboratory of the Missouri School of Mines, under the direction of Prof. C. R. Forbes, with the following object in view: To make comparative tests of various types of regular and special bits for the Water-Leyner machine as to drilling speed and total distance drilled by each bit without resharpening"--Introduction, page 2.


Investigation With Rock Drills, Tirso CastillóN Jan 1914

Investigation With Rock Drills, Tirso CastillóN

Bachelors Theses

"The object of this thesis is to investigate the different shapes of bits in rock drilling. My intention at first was to run more extensive tests on bits, but due to the large amount of work necessary in rigging up the apparatus, and the maintainence sic of same, I found it necessary to reduce my work to two bits, which I name Flat and Regular, the Flat Bit being an invention of Professor C. R. Forbes, and the Regular Bit being the common one used by the Leyner Company"--page 2.


Mining Methods And Geology Of The Boston Consolidated Mine At Bingham, Utah, James Leonidas Boucher Jan 1914

Mining Methods And Geology Of The Boston Consolidated Mine At Bingham, Utah, James Leonidas Boucher

Bachelors Theses

"This thesis does not so much attempt a detailed report on the geology of the disseminates ores of Bingham Canyon as a more particular description of the underground methods of mining these ores as well as studies in drilling, sampling, etc. Steam shovel mining was studied to some extent but almost all the data for the following pages has been derived from the Boston Consolidated Underground Mine and the Old Utah Mine. The Boston consolidated, especially, has been studied for this mine is the largest and, at late date, was the only underground porphyry mine working, the Old Utah having ...


The Development Of Mine Number One Of The Chinook Coal Company, Limited, Lethbridge, Alberta, Canada, Theodore Saunders Dunn Jan 1914

The Development Of Mine Number One Of The Chinook Coal Company, Limited, Lethbridge, Alberta, Canada, Theodore Saunders Dunn

Bachelors Theses

"The Lethbridge Mining District lies about 50 miles north of the International Boundary and approximately 280 miles north of Great Falls, Montana. The country is rolling prairie with deeply cut river vallies sic and is practically treeless except for a few willows along the river bottoms. The rainfall is moderate but the climate is severe; the summers being short and hot while temperatures of -50 degrees F. are not uncommon during the long winters. On account of the severe winters and the scarcity of timber there is a good market for coal during the entire year as it is the ...


The Determination Of Oils In Limestone, Claude Calvin Cushwa Jan 1914

The Determination Of Oils In Limestone, Claude Calvin Cushwa

Bachelors Theses

"The purpose of this work has been to establish the occurrence or the non-occurrence of petroleum in certain limestones. The results of this work, if oil were proved to exist, would have a direct bearing on the theories of the origin of oils"--Introduction, page 1.


Report On Bellshazar Mining Property, Matthew Vincent Quinn Jan 1914

Report On Bellshazar Mining Property, Matthew Vincent Quinn

Professional Degree Theses

"The property of the Belshazzar Gold Mine is located in the Granite Creek Mining District of Boise County, State of Idaho. This district forms the northern boundary of the famous Boise Basin which has produced over two hundred million in placer gold. The Balshazzar property is about three and a half miles from the town of Quartzburg and about four miles from the town of Placerville. A good wagon road connects the property with both towns"--Description of the District, page 3.


Determination Of Critical Point Of Concentrating Tables On Flat River Ore, J. C. Finagin Jr., W. C. Hogoboom Jan 1914

Determination Of Critical Point Of Concentrating Tables On Flat River Ore, J. C. Finagin Jr., W. C. Hogoboom

Bachelors Theses

"In concentrating any ore on tables there is, theoretically, a critical point in sizing, beyond which it can not be expected to recover the valuable minerals; that is, valuable mineral finer than a certain size will go with the gangue and be lost. for instance, in the diagram of the Wilfley Table shown, the concentrates grade from coarse to fine as indicated, but instead of grading on down into very fine sizes farther up the table these finer sizes are found mixed with the middlings, tailings and slimes as indicated by the arrows. The problem is to determine the critical ...


Leaching Copper Tailings, Howard Gove Halsey, Frederick Gallaway Moses Jan 1914

Leaching Copper Tailings, Howard Gove Halsey, Frederick Gallaway Moses

Bachelors Theses

"There are, scattered throughout the country, enormous amounts of rock that, by the discovery of a quick, cheap, and practiable sic method of extracting their metallic content could be turned into valuable ores. This has already been accomplished for gold and silver by the adaption of the cyanide method to their treatment. The next in order, both because of the value of the metal and the amount of material available in mill dumps and in the ground, is copper. there are dumps containing millions of tons of this material lying idle because of the fact that with the present methods ...


The Efficiency Of The Kerruish Smoke Consumer And Coal Economizer, Arthur F. Truex, Gilbert F. Metz Jan 1914

The Efficiency Of The Kerruish Smoke Consumer And Coal Economizer, Arthur F. Truex, Gilbert F. Metz

Bachelors Theses

"The Kerruish Smoke consumer is the invention of Mr. H. B. Kerruish and is patented in the United States under the Patent Number 1,046,196. The tests herein shown were made for the purpose of determining the practical value of the device as a smoke consumer, and as a fuel economizer. Many forms of these devices have been put on the market, some using a steam spray, and others using air in a manner similar to the Kerruish apparatus"--Scope of the Thesis, page 2.


An Investigation Of The Leaching Of Copper Tailings By Means Of Potassium Cyanide, Precipitation Of The Dissolved Copper By Means Of Aluminum, With Consequent Regeneration Of The Cyanide Consumed, Thaddeus Reamy Goldsborough Jan 1914

An Investigation Of The Leaching Of Copper Tailings By Means Of Potassium Cyanide, Precipitation Of The Dissolved Copper By Means Of Aluminum, With Consequent Regeneration Of The Cyanide Consumed, Thaddeus Reamy Goldsborough

Bachelors Theses

"One of the principal disadvantages attending the use of most of the usual solvents for Copper, such as Sulphuric Acid, Ferrous Chloride, etc., in the treatment of tailings products, is that the solvent is not regenerated upon precipitation by iron, and in fact is destroyed by the precipitant. This of course involves a dead loss of a definite portion of acid or other reagent, proportional to the amount of Copper dissolved. A solvent which would be regenerated upon precipitation is eminently desirable. At the same time, a carbonate gangue, or one of such a nature which will react with the ...


A Comparison Of Crushing Machines, Clyde Willis Hall, Walter Henry Wager Jan 1914

A Comparison Of Crushing Machines, Clyde Willis Hall, Walter Henry Wager

Bachelors Theses

"Much has been written on the comparative efficiency of the various sorts of crushing machines used in the art of Ore Dressing, but it must be confessed that the subject has by no means been reduced to one of the exact sciences as yet. This is rather a sad condition of affairs, for as is of course apparent to the most casual observer, the whole fabric of ore dressing rests and depends to a large degree on the efficiency and economy of the crushing machinery. Inefficient crushing means high costs, irrespective of the thoroughness and cheapness with which the ensuing ...


Design Of A 250 Ton Mill, For Cyanidation Of A Cobalt Silver Ore, Carlos Enrique Elmore Y Guerra Jan 1914

Design Of A 250 Ton Mill, For Cyanidation Of A Cobalt Silver Ore, Carlos Enrique Elmore Y Guerra

Professional Degree Theses

"My aim in the designing of this 250-Ton Mill for cyanidation of a Cobalt Silver Ore, has been to select the simplest process of extraction in connection with the Labratory [sic] Experiments which showed the highest per cent of extraction. Care has been taken in the selection of the machinery, and the location of it in the Mill is such, that if a greater capacity is required, that could be done without interfering with the machines in the Mill in question"--Introduction, page 1.


Comparative Tests Of Rock Drill Bits For Piston Machines, Thomas C. Robson, Miguel Leon Cepeda Jan 1914

Comparative Tests Of Rock Drill Bits For Piston Machines, Thomas C. Robson, Miguel Leon Cepeda

Bachelors Theses

"The object of this thesis is to find out the relative cutting qualities of different kinds of rock drill bits. The bits tested were: the regular cross bit, the Z bit of the Southeast Missouri type and the bull bit of the Joplin type. All these bits were made on a No. 5 Leyner sharpener and were tempered as nearly alike as possible. All conditions were kept as nearly uniform as possible during the various tests; air pressure, length of stroke, size of bit, etc., the only variables entering being the difference in bits and personal equation of operators"--Introduction ...


Investigation Of Rock Drill Bits, George Elmer Abernathy Jan 1914

Investigation Of Rock Drill Bits, George Elmer Abernathy

Bachelors Theses

"The object of this thesis is an attempt to determine the relative efficiency of rock drill bits.

The bits compared were the ordinary double chisel bit, sharpened with a Leyner drill sharpener, and the same bit after it had been filed so that the point was not sharp, but a flat surface 3/32 of an inch wide at the outside, diameter of the bit and tapering to a point at the center of the bit"--page 1.


Bituminous Coal Mining In Northern Missouri, True Walter Blake Jan 1914

Bituminous Coal Mining In Northern Missouri, True Walter Blake

Professional Degree Theses

"Missouri was the first state west of the Mississippi to produce a commercial output of coal and, although in later years some of the western states have produced a larger yield, still the Missouri mines bid air to hold their present standing as there are hundreds of acres of virgin coal land in this state that will be able to be worked profitably after the eastern coal operators have worked out their thicker veins of coal. The coal is won from the grasp of Mother Earth by either room-and-pillar or longwall systems in the larger mines, each method being employed ...


Gaging Of The Gasconade River, Lawrence Collins, Sidney R. Hatch Jan 1914

Gaging Of The Gasconade River, Lawrence Collins, Sidney R. Hatch

Bachelors Theses

“The work of establishing a gaging station was begun January 31st, 1914. Due to cold weather and lack of knowledge of the river it was very difficult to locate a suitable gaging station. The advantages offered by the bridge for putting in a gaging station on the lower side of the bridge was considered and tried”—Selection of a Gaging Station, page 3.


A Study Of The Economic Design Of Short Span Girder Type Concrete-Steel Highway Bridges, Enoch Ray Needles Jan 1914

A Study Of The Economic Design Of Short Span Girder Type Concrete-Steel Highway Bridges, Enoch Ray Needles

Bachelors Theses

"The general principles underlying the design of concrete-steel structures are quite well known. Concrete itself is a structural material which is sightly, permanent, very strong in compression, thoroughly reliable when made honestly, almost fool-proof when once allowed to "set" properly, adaptable to an almost unlimited number of uses, practically fire-proof as well as water-proof, and in addition its cost is always very reasonable. The great objection to concrete is its lack of tensile strength, and likewise its lack of elasticity and toughness. Thus it is a fortunate circumstance that which is one of the least expensive of metals, and which ...


An Investigation Into Methods Of Dressing Land Pebble Phosphate Rock With A View To Effecting A Greater Saving, Russell De Costa Greene May 1913

An Investigation Into Methods Of Dressing Land Pebble Phosphate Rock With A View To Effecting A Greater Saving, Russell De Costa Greene

Masters Theses

INTRODUCTION:

The object of the following investigation was to inquire into the present methods of separating land pebble phosphate rock from the sand and clay matrix in which it occurs with a view to effecting a greater recovery of values or, in the event of this proving impossible or impracticable, to devise an economical chemical treatment for the tailings containing these unrecovered values such that the product would be a salable one.


Old Hickory Trucks, Kentucky Library Research Collections Jan 1913

Old Hickory Trucks, Kentucky Library Research Collections

Kentucky Library Research Collections

Advertisement for Old Hickory trucks produced in Louisville, KY by Kentucky Wagon Manufacturing Company


Agricultural Engineering, J. Brownlee Davidson Jan 1913

Agricultural Engineering, J. Brownlee Davidson

Agricultural and Biosystems Engineering Books

Believing that the study of Agricultural Engineering should fill an important place in the training of the young man who would make farming the object of his life's work, the author has attempted to furnish in this volume an aid in supplying this part of his training. The application of agricultural engineering methods to agriculture should not only raise the efficiency of the farm worker but should also provide for hlm a more comfortable and healthful home. This volume has been written primarily as a text for secondary schools of agriculture, and for colleges where only a generaf course ...


A Series Of Tests On The Condensation Of Zinc Vapor To Metallic Zinc, Frank W. Cody, John W. Greene Jan 1913

A Series Of Tests On The Condensation Of Zinc Vapor To Metallic Zinc, Frank W. Cody, John W. Greene

Bachelors Theses

"The purpose of this Thesis is to try to show the effect which certain variables, which are always present in practice, have upon the condensation of Zinc Vapors to Metallic Zinc. That these variables can and do play an important part in the Zinc Smelting Industry can be shown from the fact that all of the zinc obtained at the present time is won from ores by reducing the oxide of zinc to metallic zinc by means of carbon. This operation necessarily takes place at a temperature above the boiling point of zinc. This means that the zinc immediately on ...


Flotation Applied To Joplin Sludge, Thaddeus C. Wilson, Gustaf Axel Hellstrand Jan 1913

Flotation Applied To Joplin Sludge, Thaddeus C. Wilson, Gustaf Axel Hellstrand

Bachelors Theses

"The sludge (fine material) which daily is being sent to the tailing dump by the Joplin mills contains values in lead and zinc often in excess, as to percentage, of that of the crude ore. At present no attempt is being made to treat this It is at this point that it is proposed to introduce some flotation process to supplement the ordinary scheme of wet concentration. With this end in view we have conducted a series of experiments in the flotation of a Joplin sludge"--page 2-3.