100 Years of Innovation
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A History of RG Letourneau's Earliest Scrapers
A History of R.G. LeTourneau’s Earliest Scrapers: Culminating in the 1922 Mountain Mover 1 John H. Niemelä, Ph.D. Research Assistant: Dale Hardy Commemorating the November 29, 2004, Designation by the A.S.M.E. of R.G. LeTourneau’s Mountain Mover at LeTourneau University, Longview, TX as a Historic Mechanical Engineering Landmark November 29, 2004 Version 1.1B (October 31, 2007) © All Rights Reserved 1 This is the most recent revision of a paper submitted to the American Society of Mechanical Engineers: “Nomination of R.G. LeTourneau’s Mountain Mover for ASME Historic Mechanical Engineering Landmark.” Four minor revisions have preceded this one: 1.01, 1.02, 1.03, and 1.04. The first major revision was 1.1A. This is a minor revision. The next minor one would be 1.1C. The next major revision would be 1.2A. * signifies that reference materials cited within a footnote contain pertinent pictures. A PERSONAL INTRODUCTION The present author’s interest in R.G. LeTourneau is long-standing. My father, George Niemelä, Sr., was a mechanic, welder, heavy-equipment operator, and businessman in northern California. When the author was a boy, Dad worked for R.G.’s brothers-in-law (Howard and Buster Peterson) at Peterson Tractor, a Caterpillar dealership based in San Leandro, CA. He was a machinist/welder in the first crew of Peterson’s Roller Exchange Shop. 2 In 1961 Dad opened an equipment rental yard in Stockton, CA (Bee Wise Tool and Equipment Rental). His business was two blocks from a Montgomery-Ward warehouse that once was R.G.’s second Stockton factory (built in 1930, expanded in 1934). -
Fordson Model F Dearborn, MI 1917
Fordson Model F Dearborn, MI 1917 The story of Fordson tractors begins The Fordson name was selected for Ford stopped tractor production in with Henry Ford. Born in 1863 in two reasons. First, there was already a the U.S. in 1928, choosing instead to Dearborn, Michigan, Henry Ford’s company in Minneapolis using the name focus on the new Model A automobile parents had moved to the U.S. from “Ford Tractor Company,” trying to that would be replacing the Model T. near Cork in Ireland and now ran a large capitalize on the name of very successful However, Fordson production continued farm of several hundred acres. Young Ford Model T by tricking customers into in Cork, Ireland, and later in Dagenham, Henry soon found farm work hard and believing the tractor was made by Henry England. After Fordson production was preferred tinkering with machines to Ford. Second, the shareholders of the transferred to Cork, exports to the U.S. laboring on the farm. Fortunately, his Ford Motor Company did not approve of were limited to 1,500 a month, which father approved of Henry’s inclination to tractor production and wanted nothing restricted sales at Ford dealerships. take machines apart and put them back to do with it. So in 1920, Henry Ford and together. In 1903, Ford formed the Ford his son, Edsel, established an entirely The original Fordson Model F tractor Motor Company using his knowledge new firm, “Ford and Son, Inc.,” which was was eventually outsold by International of machinery to turn his hobby into a later shortened to just “Fordson”. -
A Comparative Evaluation of Electric- and Gasoline- Powered Garden Tractors Mohamed Abdelgadir Elamin Iowa State University
Iowa State University Capstones, Theses and Retrospective Theses and Dissertations Dissertations 1981 A comparative evaluation of electric- and gasoline- powered garden tractors Mohamed Abdelgadir Elamin Iowa State University Follow this and additional works at: https://lib.dr.iastate.edu/rtd Part of the Agriculture Commons, Bioresource and Agricultural Engineering Commons, and the Mechanical Engineering Commons Recommended Citation Elamin, Mohamed Abdelgadir, "A comparative evaluation of electric- and gasoline-powered garden tractors" (1981). Retrospective Theses and Dissertations. 14462. https://lib.dr.iastate.edu/rtd/14462 This Thesis is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State University Digital Repository. It has been accepted for inclusion in Retrospective Theses and Dissertations by an authorized administrator of Iowa State University Digital Repository. For more information, please contact [email protected]. A comparative evaluation of electric- and gasoline-powered garden tractors by Mohamed Abdelgadir Elamin A Thesis Submitted to the Graduate Faculty in Partial Fulfillment of the Requirements for the Degree of MASTER OF SCIENCE Major: Agricultural Engineering Signatures have been redacted for privacy Iowa State University Ames> Iowa 1981 11 TABLE OF CONTENTS Page INTRODUCTION 1 OBJECTIVES 4 LITERATURE REVIEW 5 DESCRIPTION OF THE TRACTORS 14 The EPT 14 The PPT 19 PROCEDURE 25 Drawbar Performance 25 Field Experiments (Plowing, Disking, and Mowing) -
The Farm Tractor in the Forest" Is a Manual for Woodlot Owners and Small Scale Woods Contractors
The Form Troctor in the Forest "The Farm Tractor in the Forest" is a manual for woodlot owners and small scale woods contractors. It outlines the type of modifica• tions and auxiliary equipment that may be needed if a farm tractor is to be useful in a forestry operation. Guidelines for planning of forestry operations and safe work techniques are also provided. The last sections of the book cover the economic aspects of farm- tractor-logging and provide examples of how to calculate costs to compare different logging systems. The original version of this book was printed in Sweden. Illustra• tions and most references reflect current Swedish conditions. However, in some places minor changes have been made in the English version to reflect conditions in North America. ® The National Board of Forestry, Sweden Written by: Milton Nilsson illustrations: Nils Forshed Cover photo: Milton Nilsson Reference group: Thorsten Andersson Karl-Gunnar Lindqvist Bertil Svensson Project leader: Karl-Goran Enander Bengt Pettersson Editor: Bengt Pettersson English translation: Forest Extension Service N.B. Department of Natural Resources R.R.#5 Fredericton, New Brunswick Canada E3B 4X6 LF ALLF 146 82 027 Printed by: AB Faiths Tryckeri, Varnamo, Sweden 1982 ISBN 91-85748-25-0 The National Board of Forestry, Sweden published The Farm Tractor in the Forest by Milton Nilsson in 1982. In August 2017 the Swedish Forest Agency, successor organization to the National Board of Forestry, granted Vincent Seiwert of Bombadil Tree Farm, Ashland, Maine, U.S.A. permission to reproduce and disseminate The Farm Tractor in the Forest for noncommercial purposes as he deems appropriate. -
Winter 2021 Plus
WINTER 2021 PLUS. PLUS Winter 2021 1 Front Cover: TasPort’s new D9T Dozer at WELCOME the Burnie chip export terminal Welcome to the Winter 2021 edition of PLUS magazine. investment in our Clayton head office (just as we’ve finished technology group within William Adams is helping VICTORIA TASMANIA one upgrade, we’re planning the next…). Plans are afoot to customers take advantage of everything that Cat machines After last year’s lockdowns, I’m relieved to be writing add new workshop facilities, including both a Component have got on board. Among the biggest technological this letter from our head office in Clayton, which is now Rebuild Centre (CRC) and a new Central Distribution Centre developments are the new machines’ 3D capabilities, which CLAYTON HORSHAM BENDIGO GEELONG LAUNCESTON 81-83 Dimboola Road 11A Trantara Court Cnr Fyans & Crown Street 308 George Town Road operating at 100 percent capacity – and it’s great to be (CDC), for our parts operation. allow operators to dig accurately to their designs, allowing (HEAD OFFICE) Horsham VIC 3400 East Bendigo VIC 3550 Geelong South VIC 3220 Rocherlea TAS 7248 back. Our William Adams team adapted quickly and for greater safety and productivity. 17-55 Nantilla Road (03) 5362 4100 (03) 5434 2140 (03) 5223 5200 (03) 6325 0900 successfully to remote working last year, but nothing beats The CRC will be a state-of-the-art facility where we can Clayton VIC 3168 the ability to meet face-to-face with colleagues and, of centralise the rebuilding of machine components like If you’re keen to know more about Cat’s industry-leading (03) 9566 0666 course, being able to welcome our valued customers back engines, transmissions, power trains and final drives, and tech, we’ll be holding our William Adams Cat Live festival HOBART on site. -
The Evolution of British Tactical and Operational Tank Doctrine and Training in the First World War
The evolution of British tactical and operational tank doctrine and training in the First World War PHILIP RICHARD VENTHAM TD BA (Hons.) MA. Thesis submitted for the award of the degree of Master of Philosophy by the University of Wolverhampton October 2016 ©Copyright P R Ventham 1 ABSTRACT Tanks were first used in action in September 1916. There had been no previous combat experience on which to base tactical and operational doctrine for the employment of this novel weapon of war. Training of crews and commanders was hampered by lack of vehicles and weapons. Time was short in which to train novice crews. Training facilities were limited. Despite mechanical limitations of the early machines and their vulnerability to adverse ground conditions, the tanks achieved moderate success in their initial actions. Advocates of the tanks, such as Fuller and Elles, worked hard to convince the sceptical of the value of the tank. Two years later, tanks had gained the support of most senior commanders. Doctrine, based on practical combat experience, had evolved both within the Tank Corps and at GHQ and higher command. Despite dramatic improvements in the design, functionality and reliability of the later marks of heavy and medium tanks, they still remained slow and vulnerable to ground conditions and enemy counter-measures. Competing demands for materiel meant there were never enough tanks to replace casualties and meet the demands of formation commanders. This thesis will argue that the somewhat patchy performance of the armoured vehicles in the final months of the war was less a product of poor doctrinal guidance and inadequate training than of an insufficiency of tanks and the difficulties of providing enough tanks in the right locations at the right time to meet the requirements of the manoeuvre battles of the ‘Hundred Days’. -
Modeling of Tractor Fuel Consumption
energies Article Modeling of Tractor Fuel Consumption Bronisław Andrzej Kolator Faculty of Technical Sciences, University of Warmia and Mazury in Olsztyn, Oczapowskiego 11 Street, 10-719 Olsztyn, Poland; [email protected] Abstract: In this paper, the energy diagnostic of tractor performance consists in evaluating the energy (fuel consumption per hectare—dm3 ha−1) for a given agricultural operation and in combining it with working capacity, also called productivity (area productivity—ha h−1). One of the methods of solving this problem is the identification of the functioning process of the machine unit. A model of the process of the machine unit performance was developed, considering the operation of the rear linkage system of the implement with the force control adjustment system. In order to analyze the system, a mathematical model of the system function was built: tractor-implement-soil, defining the physical connections and interdependencies between the individual subsystems of the system. Based on this model, a simulation model was developed and implemented in the Matlab/Simulink environment. The Simulink package was used to test the performance of the machine set. The efficiency indicators according to the adopted criteria were calculated in the evaluation block. To evaluate the process, the technical and operational parameters of the tractor, the type and parameters of the tool, and soil properties were taken into account. The results of simulation studies obtained on a validated model are consistent with experimental data from appropriate soil conditions. Keywords: tractor; fuel efficiency; total efficiency; simulation model; three-point hitch; draft control Citation: Kolator, B.A. Modeling of Tractor Fuel Consumption. -
Tanks and Tank Warfare | International Encyclopedia of The
Version 1.0 | Last updated 17 May 2016 Tanks and Tank Warfare By Michael David Kennedy World War I introduced new technologies and doctrine in a quest to overcome the tactical stalemate of the trenches. The first tanks had great potential that would be capitalized upon during the next world war, but early models suffered from design flaws and lack of doctrine for their use on the battlefield. Table of Contents 1 Definition and Background 2 Characteristics 3 Development in Great Britain 4 Battle of the Somme (1 July-18 November 1916) 5 Battle of Cambrai (20-30 November 1917) 6 French Tanks 7 German Tanks 8 Tanks in the American Expeditionary Forces 9 Impact of Tanks on World War I Selected Bibliography Citation Definition and Background Tanks are armored vehicles designed to combine the military factors of fire, maneuver and protection. Although the concept of armored vehicles preceded the Great War, the tank was specifically developed to overcome the stalemate of trench warfare on the Western Front that followed the First Battle of Ypres (19 October-22 November 1914). The marrying of recent technological advances, such as the internal combustion engine with armor plating, enabled the tank’s development during World War I. Characteristics The first tanks introduced in 1916 were generally slow and hard to maneuver, and they performed poorly in rugged terrain. The early models were heavily influenced by commercial tractors. While impervious to barbed wire, small arms, and shrapnel, their primitive armor was still susceptible to heavy machine gun fire and direct hits from high explosive artillery rounds. -
Agricultural Tractor Selection: a Hybrid and Multi-Attribute Approach
sustainability Article Agricultural Tractor Selection: A Hybrid and Multi-Attribute Approach Jorge L. García-Alcaraz 1,*, Aidé A. Maldonado-Macías 1, Juan L. Hernández-Arellano 1, Julio Blanco-Fernández 2, Emilio Jiménez-Macías 2 and Juan C. Sáenz-Díez Muro 2 1 Department of Industrial Engineering and Manufacturing, Autonomous University of Ciudad Juarez, Del Charro Ave. 450 N., Ciudad Juárez, Chihuahua 32310, Mexico; [email protected] (A.A.M.-M.); [email protected] (J.L.H.-A.) 2 Department of Mechanical and Electrical Engineering, University of La Rioja, San José de Calasanz 31, Logroño, La Rioja 26004, Spain; [email protected] (J.B.-F.); [email protected] (E.J.-M.); [email protected] (J.C.S.-D.M.) * Correspondence: [email protected]; Tel.: +52-656-688-4843 (ext. 5433) Academic Editor: Filippo Sgroi Received: 9 January 2016; Accepted: 3 February 2016; Published: 6 February 2016 Abstract: Usually, agricultural tractor investments are assessed using traditional economic techniques that only involve financial attributes, resulting in reductionist evaluations. However, tractors have qualitative and quantitative attributes that must be simultaneously integrated into the evaluation process. This article reports a hybrid and multi-attribute approach to assessing a set of agricultural tractors based on AHP-TOPSIS. To identify the attributes in the model, a survey including eighteen attributes was given to agricultural machinery salesmen and farmers for determining their importance. The list of attributes was presented to a decision group for a case of study, and their importance was estimated using AHP and integrated into the TOPSIS technique. -
Orme) Wilberforce (Albert) Raymond Blackburn (Alexander Bell
Copyrights sought (Albert) Basil (Orme) Wilberforce (Albert) Raymond Blackburn (Alexander Bell) Filson Young (Alexander) Forbes Hendry (Alexander) Frederick Whyte (Alfred Hubert) Roy Fedden (Alfred) Alistair Cooke (Alfred) Guy Garrod (Alfred) James Hawkey (Archibald) Berkeley Milne (Archibald) David Stirling (Archibald) Havergal Downes-Shaw (Arthur) Berriedale Keith (Arthur) Beverley Baxter (Arthur) Cecil Tyrrell Beck (Arthur) Clive Morrison-Bell (Arthur) Hugh (Elsdale) Molson (Arthur) Mervyn Stockwood (Arthur) Paul Boissier, Harrow Heraldry Committee & Harrow School (Arthur) Trevor Dawson (Arwyn) Lynn Ungoed-Thomas (Basil Arthur) John Peto (Basil) Kingsley Martin (Basil) Kingsley Martin (Basil) Kingsley Martin & New Statesman (Borlasse Elward) Wyndham Childs (Cecil Frederick) Nevil Macready (Cecil George) Graham Hayman (Charles Edward) Howard Vincent (Charles Henry) Collins Baker (Charles) Alexander Harris (Charles) Cyril Clarke (Charles) Edgar Wood (Charles) Edward Troup (Charles) Frederick (Howard) Gough (Charles) Michael Duff (Charles) Philip Fothergill (Charles) Philip Fothergill, Liberal National Organisation, N-E Warwickshire Liberal Association & Rt Hon Charles Albert McCurdy (Charles) Vernon (Oldfield) Bartlett (Charles) Vernon (Oldfield) Bartlett & World Review of Reviews (Claude) Nigel (Byam) Davies (Claude) Nigel (Byam) Davies (Colin) Mark Patrick (Crwfurd) Wilfrid Griffin Eady (Cyril) Berkeley Ormerod (Cyril) Desmond Keeling (Cyril) George Toogood (Cyril) Kenneth Bird (David) Euan Wallace (Davies) Evan Bedford (Denis Duncan) -
Notes on the Origins of Some American Tractors
Notes on the Origins of Some American Tractors The tractor used by the CCC crew in Southwest Harbor, as shown in SWHPL 10609, was a Best 30 crawler tractor with open radiator sides, made in 1924-1925 as one of the last models made by the C.L. Best Tractor Company before it merged with Holt Manufacturing to become the Caterpillar Tractor Company. 1890. Benjamin Holt and Daniel Best experimented with various forms of steam tractors for use in farming. They did so separately, with separate companies. 1904. Holt's first steam track-type tractor. 1906. Holt's first gas track-type tractor. 1915. Holt "Caterpillar®" track-type tractors are used by the Allies in World War I. 1925. The Holt Manufacturing Company and the C. L. Best Tractor Co. merge to form Caterpillar Tractor Co. In 1908, at the age of 70, Daniel retired. His son, Clarence Leo Best ("Leo"), continued in his father’s footsteps, and with his father still giving advice, continued to experiment and improve on their tractors. One improvement made was the track laying design. This type of tractor moved on rolling tracks instead of wheels. He made several different models, but two really stood out as notable. The two models — the 30 hp field tractor, and the 60 hp field tractor — were well received and highly praised by the farming community. These tractors would eventually launch a new line of tractors that are still used today. Caterpillar Tractor Company In 1925, the C.L. Best Tractor Company and the Holt Manufacturing Company, who also manufactured tractors and had trademarked the Caterpillar brand, merged to form the Caterpillar Tractor Company. -
Download Caterpillar Parts Catalog
NEW REPLACEMENT PARTS FOR HEAVY EQUIPMENT Integrated Toolcarrier / Compactor 31 Linear Actuators 50 INDEX Wheel Loader / Integrated Toolcarrier 31 Pressure Sensors 50 All part numbers available are not Vibratory Compactors 31 Magnetic Switches 50 Digital Hour Meters 31 Kickout and Bucket Positioners 50 included. This is not a full catalog. Gauges 32 Speed Sensors 50 INDEX Mechanical Temperature Gauges 32 Solenoids 51 AIR INLET & Electrical Temperature Gauges 32 Starting Motor Solenoids 51 EXHAUST SYSTEM 8 Pressure Transducer 32 Semi Solid Solenoids 51 Electrical Pressure Gauges 32 Fuel Shutoff Solenoids 51 Air Intake/ Exhaust Clamps 8 Mechanical Pressure Gauges 32 Starter Motors 51 Manifolds 8 Ammeters 33 Single Manifolds 8 Vane Air Starter Motors 52 Gas Springs 33 Switches 52 Group Manifolds 9 Steps 33 Mufflers 9 Steps Support 33 DIESEL ENGINE COMPONENTS 53 Muffler Pipes 10 Ignition Switches 33 Engine Blocks 55 Turbochargers 11 Mirrors 33 Custom Engines 55 Turbochargers for Komatsu® 14 Fuel Caps 34 Inframe Overhaul Kits 55 BEARINGS 15 Repair Kit 34 Inframe Overhaul Kits for Composite Bearings 15 Seats 34 Backhoe Applications 56 Premium Inframe Overhaul Kits 56 Sleeve Bearings 16 COOLING SYSTEM 36 Crankshafts 57 Spherical Bearings 16 Oil Coolers 36 Crankshafts for Komatsu® 57 QUALITY WITH VALUE... Tapered Roller Bearings 17 Radiators 37 Engine Bearings 57 TM Cone Bearings 17 Folded Core Radiators 37 Cup Bearings 17 Camshafts 58 Reversible & Standard Fans 38 Lifters 59 GUARANTEED Other Tapered Bearings also Available 18 Standard Fans 38