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Kennedy Mine – Tailing Wheels
The monstrous, fifty-eight foot diameter Kennedy Tailing Wheels are a one-of-a-kind creation. Although not built during the Gold Rush, these huge wooden wheels were a direct result of a Gold Rush event and are probably the most remembered artifacts of any visit to Jackson today. The wheels were built in 1914 in response to federal anti-debris laws and court cases reaching back to the 1880’s; no longer could the mines dump their wastes into the rivers and streams, polluting the water and causing serious flood dangers to the farmers in the valleys below. All mine tailings had to be impounded. As the Kennedy Mine’s impound dam was located behind two small hills and about a half a mile away from the mill, the wheels were built to lift the tailings up over the hills to the dam.
The ore from the Kennedy Mine was crushed in their one hundred-stamp mill on the south slope of Humbug Hill. The tailings, or “waste,” were then mixed with water in the slime plant and allowed to flow down a one thousand-foot-long flume to the base of Wheel #1. Anchored to a concrete foundation, the three-story-tall wheel lifted the tailings forty-four feet in redwood buckets, and then emptied them into a flume which flowed to the base of Wheel #2. From the top of Wheel #2, an eight hundred-foot long flume carried the tailings over Jackson Gate Road to Wheel #3. Up another forty-four feet and down another flume to Wheel #4 which lifted the tailings for a final time up and over the top of the hill and into the impounding basin in Indian Gulch.
The wheels worked twenty-four hours a day, from December of 1914 to 1942 with few stoppages, each day lifting 850 tons of waste up and over the hills. When the Kennedy Mine closed in 1942, the corrugated iron buildings which had enclosed the four wheels were torn down for scrap. Suddenly, four looming wooden wheels appeared on Jackson’s horizon, much to the delight of later day artists and photographers. The wheels are located in the Jackson Kennedy Wheels City Park, north of town about a mile along Jackson Gate Road. Two wheels have fallen since they were uncovered in 1942, Wheel #3 in 1963, and Wheel #2 in 1970. Recently steps have been taken by local citizens, county and city officials to help preserve the last two standing wheels.
Source: www.malakoff.com/goldcountry/mcjkktw.htm
How to Make a Boat Pulley System
How to Make a Boat Pulley System
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Home » Remodeling & Repairs » How to Make a Boat Pulley System
How to Make a Boat Pulley System
Pulleys allow people to move objects that would otherwise be far too heavy to move. Increasing the mechanical advantage of a pulley system decreases the amount of force that is needed to move an object. For example, a mechanical advantage of 10 will only require enough force to move 1/10th the total weight of an object. Pulling a boat by hand could be impossible, but a pulley system with a great enough mechanical advantage could allow a person to move it alone.
Instructions
1
Place the 10 pulley wheels in the slots of the pulley system axles. Five wheels should go on each axle. The axle of a pulley system is the support portion for the pulley wheels themselves.
2
Tie an axle to the support beam. This beam can be made of anything, but a metal pole suspended in some manner will work well. The pole can be held up by ropes hung from an object that is taller than the boat. It can also be supported by a structure below. As long as the beam is higher than the boat, it will work well. Use one of the shorter lengths of rope to tie the axle to the beam. It does not matter which axle you use. Tie the rope to one end of the axle, then around the beam and to the other end of the axle. A simple square knot around the axle will work well. If using a small axle, a figure-eight knot used as a stopper may also work.
3
Tie the remaining pulley to the tow hook on the front of the boat. Tie one end of a shorter length of rope to one end of the axle of the pulley, then through the hook on the boat and to the other side of the axle of the pulley.
4
Tie one end of the longer rope to the support beam.
5
Tie the remaining end of the longer length of rope to the axle that is already secured to the support beam. The rope should be aligned with one of the pulley wheels.
6
Run the long length of rope through the pulley wheels. Go around the support beam and through the hook on the boat on the way to and from each pulley wheel.
7
Pull the loose end of the rope. This will move the boat on the trailer with a mechanical advantage.
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Comments (1)
Everett Johnston, 9 months ago
Interesting. Thanks for the article.
“How to Make a Boat Pulley System” is managed by KimD
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