It is the first lip care product in sliding tube packaging.
2.
American Maurice Levy designed the first lipstick in a sliding tube in 1915.
3.
The second concept study retained the sliding tube for the lens, but used a selenium light meter.
4.
The original way to make the slide tubes was to roll a flat piece of metal around a solid cylinder mandrel, and the joining edges soldered together.
5.
The original movable sliding tube was one of the most expensive parts, because it had to be precisely manufactured on a lathe for a light tight fitting.
6.
At some point in the 15th century, musicians discovered that a trumpet could be modified with sliding tubing to produce deeper musical tones, and the trombone was born.
7.
Nowadays, the stockings are incorporated into the manufacturing process of the inner slide tubes and represent a fractional widening of the tube to accommodate the necessary method of alleviating friction.
8.
Unlike the earlier slide trumpet from which it evolved, the sackbut possesses a " double " slide, with two parallel sliding tubes, which allows for playing scales in a lower range.
9.
To prevent friction from slowing the action of the slide, additional sleeves were developed during the Renaissance, and these " stockings " were soldered onto the ends of the inner slide tubes.
10.
In first position, the length of the bore is at its shortest; seventh position puts the slide at its furthest extension, at the edge of the inner slide's stockings . ( These are sections of slightly greater diameter at the ends of the inner slide tubes . ) Positions 3 and 4 may be located by referring the player's right hand to the bell of the instrument.
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