US 4,102,517 A · Tape driving apparatus for tape play-back and/or recording devices

Abstract

A tape drive system for tape play-back and/or recording devices is disclosed herein. The drive system comprises a first belt driven flywheel whose sole purpose is to control the rotary motion of a tape capstan. A second flywheel, which is also driven by the same belt that drives the first flywheel, is selectively coupled to a toothed pinion which is in constant meshing engagement with a toothed wheel rigidly connected to the collecting reel shaft of the play-back and/or recording device. For fast forward operation an idler pulley, which is directly driven by the same belt that drives the first and second flywheels, has a toothed surface coupled to the pinion while the pinion is decoupled from being driven by the second flywheel. For fast rewind operation, the toothed surface of the idler wheel is directly coupled to a mating toothed surface of a wheel rigidly connected to the supply reel shaft of the play-back and/or recording device while the second flywheel is again decoupled from the toothed pinion. The positioning of the idler wheel is controlled by movement of a T-shaped lever pivotally mounted at two points to the frame of the play-back and/or recording device.

Claims8

Dependent claims

A tape drive system for a tape playback and/or recording device, comprising:

a tape capstan;
a first driven flywheel coupled to said tape capstan, the rotary motion of said first flywheel being solely coupled to and controlling said tape capstan;
a toothed wheel and a tape collecting reel shaft attached to said toothed wheel;
a wheel on which a tape supplying reel shaft is attached;
a toothed drive wheel coupled in continuous meshing engagement with said toothed collecting reel shaft wheel;
a second driven flywheel;
means for selectively coupling said second flywheel to said toothed drive wheel, the rotary motion of said second flywheel means being selectively coupled to and controlling the rotation of said toothed drive wheel during a play mode of said tape drive system;
an idler wheel;
means coupled to said first and second flywheels and said idler wheel for rotationally driving them;
and
means for selectively shifting said idler wheel from a normal play position into a fast forward position in which said idler wheel is in meshing engagement with said toothed wheel that drives said collecting reel shaft wheel, and for shifting said idler wheel from said normal play position into a fast rewind position in which said idler wheel is directly in meshing engagement with the wheel to which said supplying reel shaft is attached to, wherein said shifting means implements fast forward and fast rewind modes of operation.

8 more elements

A tape drive system for a tape play-back and/or recording device, comprising:

a tape capstan;
a first driven flywheel coupled to said tape capstan, the rotary motion of said first flywheel being solely coupled to and controlling the tape capstan;
a wheel having a tape collecting reel shaft attached to said wheel;
a wheel having a tape supplying reel shaft attached to said wheel;
a drive wheel coupled in continuous engagement with said collecting reel shaft wheel;
a second driven flywheel;
means for selectively coupling said second flywheel to said drive wheel, the rotary motion of said second flywheel being selectively coupled to and controlling the rotation of said drive wheel during a play mode of said tape drive system;
an idler wheel;
means coupled to said first and second flywheels and said idler wheel for rotationally driving them;
and
means for selectively shifting said idler wheel from a normal play position into a fast forward position in which said idler wheel is in engagement with said drive wheel that drives said collecting reel shaft wheel, and for shifting said idler wheel from said normal play position into a fast rewind position in which said idler wheel is directly in engagement with said supplying reel shaft wheel, wherein said shifting means implements fast forward and fast rewind modes of operation.

8 more elements

Dependencies are inferred from the claim text.

Tape driving apparatus for tape play-back and/or recording devices

Life of this patent

Tape driving apparatus for tape play-back and/or recording devices

Life of this patent

Abstract

Claims8