Remote drift rate compensator for frequency standards

Claim 1

In a drift rate compensator for a transmitting and receiving system having an oscillator and a crystal for controlling the frequency of the oscillator, a variable capacitor connected in parallel with the crystal and the oscillator, said variable capacitor including a stator, a shaft and a rotor mounted on the shaft, means operable for tuning the capacitor for increasing the capacity in parallel with the crystal, means operable for tuning the capacitor for decreasing the capacity in parallel with the crystal, constant speed motor means connected with said capacity increasing means and with said capacity decreasing means and operable for adjusting the capacitor to compensate for long term frequency drift of said oscillator, a first reduction gear connected to said constant speed motor means, a variable speed motor, a second reduction gear connected to said variable speed motor, means coupling the reduction gears to the variable capacitor, wherein said coupling means includes a traveling spur gear mounted on the shaft, means connecting the traveling spur gear to the first reduction gear, a pinion meshing with the traveling spur gear, and means connecting the pinion to the second reduction gear.