Sybian machine

A Sybian (/ˈsɪbiən/), or Sybian saddle, is a masturbation device primarily designed for use by women. It consists of a saddle-like seat containing an electric motor, gearbox speed reducer, and mechanism connected to a rod that protrudes from a hole in the top center. Various attachments can be added to the rod, which vibrates, rotates and may also stimulate the clitoris externally. The intensity of the movements produced can be increased or decreased through a control box attached to the Sybian's base.

According to its inventor Dave Lampert, the Sybian was first conceived in the 1970s but it was not until 1983 that he began to develop the idea further. A prototype was built in 1985 from sheet metal mounted on a wooden frame with a vibrator projecting through an opening inside the housing; a second prototype became the basis for current production models.

Lampert and his team initially called the device Master Better, shortened to "MB" for about four years before selecting a new name for it. The prefix syb was derived from Sybaris, an Ancient Greek city in southern Italy which was associated with luxurious living. It is currently manufactured by Abco Research Associates in Monticello, IL.

The success of the Sybian in helping many women achieve orgasm more easily than through traditional intercourse with a man is believed to be due to the absence of the vigorous thrusting motion usually associated with coitus, which provides the proper stimulation for a man to achieve orgasm, but is generally not the stimulation required for most women to achieve orgasm.

From his research and experience, Lampert came to realize that the woman-superior position during intercourse works best for female orgasm and that stimulation is enhanced when the penis remains fully inserted and the woman rocks her pelvis forward and backward, making contact with the sensitive G-spot, located on the front wall of the vagina, anterior to the location of the exterior clitoris.

...
Wikipedia