Before getting into looking at how our eyes can become damaged and on how to prevent eye damage from occurring we will be looking at the story of the one eyed carpenter and what we can learn from his misfortune. The One Eyed Carpenter A carpenter asked his employer to pay for the damage done to his glass eye which was broken when a nail he had been driving flew up and struck it. When he was asked how he lost the eye in the first place he...
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Wheel loaders started their development much later than other earthmoving machines such as excavators and graders. For decades, cable operated shovels filled the earthworks niche that is today largely the domain of wheel loaders. It wasn’t until the second decade of the twentieth century that the earliest examples of what would develop into...
Most machinery exists today as a result of mankind’s desire to minimize labor and boost productivity. An important group of machines that has freed mankind from drudgery and bone- wearying toil are the excavators. Excavators encompass a large group of earth moving machines ranging from the colossal draglines used in strip mining to the...
During the 1800’s as road networks etched their way across the landscape the need grew for more and better maintenance to accommodate the swelling volume of wheeled traffic. The horse drawn vehicles of the day pocked and rutted the soft road surfaces especially during periods of inclement weather. Maintenance equipment of the time was...
The age of steam power allowed the development of traction engines for pulling agricultural implements and wagons. Steam engine powered traction engines were equipped with wheels whose high ground pressure and limited traction were an impediment in soft ground applications. Attempts to overcome these challenges resulted in employing...