Device for moving a pinch roller

Claim 1

A device for pressing a pinch roller against a capstan in a magnetic recorder and reproducer while maintaining parallelism between the contacting peripheral surfaces of said roller and capstan, said device comprising: first means for elevating the supporting shaft of said pinch roller in a direction parallel to the capstan axis and from a position below said capstan to a laterally aligned position therewith, second independent means for laterally moving said aligned pinch roller into contact with said capstan, and common means acting on said first means and said second means to sequentially move said pinch roller first in the direction of its axis and secondly orthogonal thereto.

Claim 2

A device for pressing a pinch roller against a capstan in a magnetic recorder and reproducer while maintaining parallelism between the contacting peripheral surfaces of said roller and capstan, said device comprising: first means for elevating the supporting shaft of said pinch roller in a direction parallel to the capstan axis and from a position below said capstan to a laterally aligned position therewith, second independent means for laterally moving said aligned pinch roller into contact with said capstan, and common means acting on said first means and said second means to sequentially move said pinch roller first in the direction of its axis and secondly orthogonal thereto.

Claim 5

A device for pressing a pinch roller against and in parallel with a capstan in a magnetic tape recorder and reproducer comprising: a capstan, a pinch roller supported on a supporting shaft for said pinch roller, a first movable plate fixed to the lower end of said supporting shaft, a guide bar in engagement with said first movable plate, a first lever pivoted at one end and having the other end supporting said movable plate, a pivoted bell crank including one end for supporting the lower surface of the first lever and a second lever integrally formed therewith, a spring for biasing the second lever toward pinch roller depressed position, a plunger, a third lever pivoted intermediate its ends and having one end engaging said plunger, a bearing for said pinch roller supporting shaft fixed to a second movable plate, rails slidably supporting said second movable plate between stops with stops disposed at one end of said rail and biasing springs toward one end of said second movable plate, a spring connected at one end to the lower surface of said first movable plate and at the other end to the upper surface Of said second movable plate for preventing the first movable plate from floating, and a spring engaged with the end of said plunger for biasing said third lever into contact with said second lever.

Claim 6

A device for pressing a pinch roller against and in parallel with a capstan in a magnetic tape recorder and reproducer comprising: a capstan, a pinch roller supported on a supporting shaft for said pinch roller, a first movable plate fixed to the lower end of said supporting shaft, a guide bar in engagement with said first movable plate, a first lever pivoted at one end and having the other end supporting said movable plate, a pivoted bell crank including one end for supporting the lower surface of the first lever and a second lever integrally formed therewith, a spring for biasing the second lever toward pinch roller depressed position, a plunger, a third lever pivoted intermediate its ends and having one end engaging said plunger, a bearing for said pinch roller supporting shaft fixed to a second movable plate, rails slidably supporting said second movable plate between stops with stops disposed at one end of said rail and biasing springs toward one end of said second movable plate, a spring connected at one end to the lower surface of said first movable plate and at the other end to the upper surface Of said second movable plate for preventing the first movable plate from floating, and a spring engaged with the end of said plunger for biasing said third lever into contact with said second lever.