Before Hydraulics: The First Bulldozer Blade Ever Built (1923) скачать в хорошем качестве

Before Hydraulics: The First Bulldozer Blade Ever Built (1923)

Before Hydraulics: The First Bulldozer Blade Ever Built (1923) In 1923, two Kansas farmers bolted oak planks, a windmill spring, and Model T Ford parts to a Fordson tractor and backfilled over a mile of pipeline trench in a single day. Ten times faster than horses. They filed patent number 1,522,378. But almost every history of the bulldozer cites the wrong patent number. One inventor got 68 patents and a Presidential award. The other sold his share for $500 and vanished for 62 years. This documentary traces the full story of the bulldozer blade: the Teapot Dome scandal pipeline that triggered the invention, the three-day junkyard build in Morrowville, Kansas, the three-way corporate war between LaPlant-Choate, LeTourneau, and Caterpillar, the disturbing 1876 racist origins of the word "bulldozer" itself, and the WWII combat kills that turned a ditch-filling attachment into a weapon of war. Caterpillar refused to build a single blade for 20 years. Every Cat bulldozer on every job site in America wore a blade made by two small companies. Then in 1944, Caterpillar cut both suppliers off, started making its own, and watched one get swallowed by Allis-Chalmers and the other sell everything to Westinghouse for $31 million. —————————————————— ⏱️ TIMESTAMPS 0:00 - The word "bulldozer" has nothing to do with bulls 1:17 - Before the blade: blood, horses, and dirt 2:00 - The Fresno scraper and steam shovels 3:37 - No machine on earth could push dirt forward 4:14 - The Panama Canal's 10% death rate 4:42 - Why crawler tractors were backwards-facing tools 6:28 - The Teapot Dome scandal pipeline (1923) 7:17 - The backfilling method: 500 feet per day with horses 7:57 - James Cummings and John Earl McLeod 8:43 - The three-day junkyard build 9:09 - Patent 1,522,378 and why every history gets it wrong 10:23 - They saw it as a ditch filler, not a weapon of war 11:06 - The $500 betrayal between co-inventors 12:12 - McLeod vanished for 62 years 12:55 - The Morrowville replica in Cummings Park 13:00 - LaPlant-Choate puts the blade on a crawler tractor 14:03 - Wheeled Fordson vs. track-laying crawler 14:35 - Operating the knuckle busters by hand 15:09 - The crude blade: no angle, no tilt 16:28 - LeTourneau invents the Power Control Unit (1928) 16:54 - Cable snap: the deadliest hazard of the era 17:35 - Hydraulic vs. cable controls: two parallel technologies 18:16 - Caterpillar refused to build a blade for 20 years 19:33 - 1944: Caterpillar pulls the plug on its suppliers 20:30 - LaPlant-Choate swallowed by Allis-Chalmers (1952) 20:58 - LeTourneau sells to Westinghouse for $31 million 21:44 - Carrimors vs. Carryalls: the naming rivalry 22:07 - The racist origin of the word "bulldozer" (1876) 23:30 - From vigilante to firearm to earthmover 24:13 - The bulldozer blade goes to war 25:06 - Aurelio Tassone and the D8 named "Helen" (1943) 26:03 - The blade as improvised armor 26:51 - Seabee ingenuity: beer cans, tinfoil, and fuel drums 27:28 - Nine days from beach landing to fighter airstrip 27:55 - B-29 runways and the atomic bomb missions 28:04 - Hobart's Funnies and the D-Day decision 28:40 - The Rome Plow in Vietnam: 750,000 acres cleared 29:38 - Operation Desert Storm: the Bulldozer Assault 30:44 - Legacy: from oak planks to a $60 billion industry —————————————————— 📚 Sources & Further Reading: US Patent 1,522,378A — "Attachment for Tractors" (McLeod & Cummings, 1925) — patents.google.com Texas State Historical Association — James Dell Cummings biography — tshaonline.org Farm Show Magazine — "Replica of World's First Bulldozer Was Built in Kansas" — farmshow.com Contractor Magazine NZ — LaPlant-Choate company history — contractormag.co.nz OEM Off-Highway / HCEA — "The Earliest Bulldozers" — oemoffhighway.com Noema Magazine — "The Shrouded, Sinister History of the Bulldozer" — noemamag.com The Saturday Evening Post — "The Racist Origins of 'Bulldozer'" — saturdayeveningpost.com We Are The Mighty — "This sailor used a bulldozer to earn the Silver Star" — wearethemighty.com Military.com — "The Bulldozer Assault of Desert Storm" — military.com Historical Construction Equipment Association (HCEA) archives 🔔 Subscribe for more construction history documentaries:    / @constructionlegends   —————————————————— © Fair Use Notice: This video may contain copyrighted material. Such material is made available for educational and documentary purposes. This constitutes fair use under Section 107 of the U.S. Copyright Act (17 U.S.C. § 107). All footage, images, and clips belong to their respective copyright holders. #BeforeHydraulics #Bulldozer #BulldozerHistory #Caterpillar #LaPlantChoate #LeTourneau #ConstructionHistory #HeavyEquipment #WWII #SeabeeBulldozer #ConstructionLegends