Who invented the trailer ball?
In the late 1920s, Frank Zagelmeyer of Bay City, Michigan, patented a ball and receiver hitch that was more secure than the tang and bolt connection and allowed much more flexible operation.
What does Michael Pollan argue In the Omnivore’s Dilemma?
Its thesis is that plants are smarter than we are and that by domesticating them we’ve fallen in with their master plan to increase their habitat. His present book, about the American appetite, lacks the charm of that conceit but is more important.
What are the sizes of trailer hitch balls?
Trailer hitch balls come in four different sizes: 1-7/8, 2, 2-5/16 and 3 inches. They also come with different shank or stem sizes, ranging from 3/4 inches to 2 inches in diameter. Depending on the ball size, weight capacities for trailer hitch balls range from 2,000 up to 30,000 pounds.
When was the trailer ball invented?
Their invention, which they proudly displayed in Space 6 at the 1916 Minnesota State Fair, provides “an extremely simple and highly efficient coupler especially adapted for use to connect the pole of a trailer cart to the rear portion of an automobile.” The patent was approved on July 27, 1915, and the towing world has …
Who invented the 5th wheel?
inventor Charles H. Martin
The invention of the fifth wheel for motorized trucks is often credited to US inventor Charles H. Martin of the Martin Rocking Fifth Wheel Co. who invented the device in 1915. It was submitted for patent in 1915 and finalized in 1916, with Herman Farr as inventor and Martin as assignee.
What can you infer about Pollan’s purpose in writing this book?
What can you infer about Pollan’s purpose in writing this book? What makes you think so? Pollan wrote the book to “solve the omnivore’s dilemma” by telling people where food comes from so they can make good decisions about what to eat.
What is a trailer ball made of?
Made from chrome, stainless steel, and zinc, balls come in four standard diameters (1 7/8, 2, 2 5/16, and 3 inches) and a variety of shank lengths (depending on manufacturer) and diameters (5/8, 3/4, 1, 1 1/4, and 2 inches).
Who invented the gooseneck hitch?
The long-nose tractor appears to be a Hendrickson, built by another company that, like Talbert, was based in Lyons, Illinois, west of Chicago. Fifteen years later, Austin Talbert designed and patented the industry’s first hydraulic removable gooseneck, the release says.
Why is it called a fifth wheel?
History of the Fifth Wheel Design But why is it called a fifth wheel? The name actually comes from the company that first utilized the hitch in the early 1900s. The Martin’s Fifth Wheel Company named their device after the round shape of the hitch. Hence, the hitch itself is the “fifth wheel.”
How did the 5th wheel get its name?
The term ‘fifth wheel’ comes from a similar coupling used on four-wheel horse-drawn carriages and wagons. The device allowed the front axle assembly to pivot in the horizontal plane, to facilitate turning.
How did farmers like George Naylor’s grandfather get their seed Why don’t they do that anymore?
Why don’t they do that anymore? Farmers like George Naylor’s grandfather grew their own seed. They kept some of their crop to be planted for the next season.