USA FILL POWER CYLINDER
Technical Description
The cylinder is made of a 1/8 inch thick clear plastic tube. The tube has an inside diameter of 9.75 inches and is 24 inches long. The inner wall has a smooth finish. The cylinder is attached to a base to support it in a vertical position.
Graduation marks are placed on three different points around the cylinder. Each inch of graduation represents 75 cubic inches of Fill Power. Graduation lines can be 1/10 inch apart (representing 7.5 cubic inches) or 2/15 inches apart (representing 10 cubic inches). The graduation marks extend from the bottom of the cylinder for 12-16 inches (which represent 900-1200 cubic inches Fill Power).
The piston plate and rod are made of rigid material and weigh exactly 68.5 grams. The piston plate shall have a diameter of 9.5 inches with a rod secured perpendicular in the center of the piston plate. A removable plastic cap 12 inches in diameter is centered over the top of the cylinder with a 1/4 inch hole in the middle. The piston can be raised and lowered by the rod extending through the hole.
Method for Measuring Fill Power
Approximately 2 ounces (50 grams) of feather and down material is relaxed and conditioned in a screened conditioning box for not less than 3 days and not more than 5 days.
- A sample of exactly 1 ounce (28.4 grams) is placed in the cylinder.
- Slowly mix the sample with the cylinder mixing rod, lifting the material on the bottom of the cylinder to the top.
- Place the cap and piston on the cylinder.
- Slowly lower the piston. When the sample supports the weight of the piston, let the piston fall freely for one minute.
- The position of the piston plate is measured on each of the three graduation marks around the cylinder.
- Remove the piston and cap.
- Repeat steps 2-6 two additional times.
- The nine measurements are totaled and divided by 9 to obtain an average cubic inch Fill Power value.
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