Drive device for tape recorders

Claim 2

A magnetic tape recorder drive apparatus, comprising: first and second stationary support pins; first and second spool drive spigots for mounting two tape spools, respectively, for free rotational movement on said first and second support pins, respectively; transport means for transporting tape between said tape spools at a constant speed; magnetic head means for recording a signal on or reproducing a signal from said tape while said tape is moving between said two tape spools; first and second driving wheels mounted on said first and second support pins, respectively, for free rotational and axial movement thereon; first and second driven wheels journalled on said first and second support pins, respectively, between said driving wheels and said spool drive spigots for axial movement therealong, said driven wheels being connected to said spool drive spigots for rotation therewith; first and second braking discs stationarily mounted on said first and second support pins, respectively, between said driving wheels and said driven wheels; clutch means for axially moving said first driving wheel from a first position of disengagement from said first driven wheel, which in said first position, engages said first braking disc, into a second position wherein said first driving wheel engages said first driven wheel and said first driven wheel is disengaged from said first braking disc; drive means for driving said driving wheels in opposite directions; spring means disposed between each of said driving wheels and its associated spool drive spigots; and an abutment on the upper end of each of said support pins, said spring means pressing said driven wheels against said braking disc and said spool drive spigots against said abutments wherein, upon axial movement of said driving wheel into engagement with said driven wheel, the latter is disengaged from said braking disc against the action of the force of said spring means.

Claim 3

The structure as set forth in claim 1 further comprising, on the side of each driven wheel which is adjacent to the drive wheel and the braking disc, an annular frictional coating with an inner part for abutting against the braking disc and an outer part for abutting against a face on the drive wheel, and in which the spring means each comprise two singel helical springs, whose one end engages the drive wheel and whose other end engages the spool driving spigot and which applies a first defined pressing force with which the inner part of the frictional lining is pressed against the braking disc and which in a certain raised position of the driving wheel and the driven wheel delivers a second defined pressing force with which the outer part of the frictional lining is pressed against the face of the driving wheel and which further makes possible an axial displacement of the spool entraining spigot.

Claim 4

The structure as set forth in claim 2 in which the spool driving spigots have blind prismatic holes and the driven wheels are provided with boss-shaped projections matching the cross section of these holes, the associated spool driving spigots being mounted in a sliding manner on the respective projections, and in which there is a stationary abutment on the respective pin extending into the blind hole of the spool driving spigot and against this abutment there abuts the end face, associated with the spool drivinG shaft, of the boss-shaped extension in the rewinding position of the driving wheel and of the driving wheel when the latter is raised and in which the means which drive the driving wheels in opposite directions comprise a motor which during operation of the magnetic tape apparatus runs in the same direction and whose shaft carries a stepped drive pulley on which a belt runs which passes around the drive wheels for driving them in opposite directions, the apparatus further comprising an operating fork which urges the drive belt on to a step of greater diameter on the pulley for rewinding the tape.

Claim 5

The drive apparatus according to claim 1, wherein: said transport means comprises first and second flywheels, at least one capstan driven by one of said flywheels and at least one pressing roller for pressing said tape against said capstan; and said apparatus further comprises: a drive motor which rotates in only a single direction of rotation and at a constant speed; and further drive means connecting said drive motor with said first and second flywheels for driving said flywheels in opposite directions.

Claim 6

A magnetic tape recorder drive apparatus, comprising: first and second stationary support pins; first and second spool drive spigots for mounting two tape spools, respectively, for free rotational movement on said first and second support pins, respectively; transport means for transporting tape between said tape spools at a constant speed; magnetic head means for recording a signal on or reproducing a signal from said tape while said tape is moving between said two tape spools; first and second driving wheels mounted on said first and second support pins, respectively, for free rotational and axial movement thereon; first and second driven wheels journalled on said first and second support pins, respectively, between said driving wheels and said spool drive spigots for axial movement therealong, said driven wheels being connected to said spool drive spigots for rotation therewith; first and second braking discs stationarily mounted on said first and second support pins, respectively, between said driving wheels and said driven wheels; clutch means for axially moving said first driving wheel from a first position of disengagement from said first driven wheel, which in said first position, engages said first braking disc, into a second position wherein said first driving wheel engages said first driven wheel and said first driven wheel is disengaged from said first braking disc; drive means for driving said driving wheels in opposite directions; said spool drive spigots each having a blind hole with a prismatic cross section, said driven wheels each having a boss-shaped male projection matching said prismatic cross section, said spool drive spigots being slideable on the boss projection of its associated driven wheel; and a stationary abutment on each of said support pins located in said blind hole, wherein the end face of the associated boss projection is urged against said abutment when said driving wheel has been moved a predetermined distance.

Claim 7

A magnetic tape recorder drive apparatus, comprising: first and second stationary support pins; first and second spool drive spigots for mounting two tape spools, respectively, for free rotational movement on said first and second support pins, respectively; transport means for transporting tape between said tape spools at a constant speed; magnetic head means for recording a signal on or reproducing a signal from said tape while said tape is moving between said two tape spools; first and second driving wheels mounted on said first and second support pins, respectively, for free rotational and axial movement thereon; first and second driven wheels journalled on said first and second support pins, respectively, between said driving wheels and said spool drive spigots for axial movement therealong, said driven wheels being connected to said spool drive spigots for rotation therewith; first and second braking discs stationarily mounted on said first and second support pins, respectively, between said driving wheels and said driven wheels; clutch means for axially moving said first driving wheel from a first position of disengagement from said first driven wheel, which in said first position, engages said first braking disc, into a second position wherein said first driving wheel engages said first driven wheel and said first driven wheel is disengaged from said first braking disc; drive means for driving said driving wheels in opposite directions; said spool drive spigots each having a blind hole with a prismatic cross section, said driven wheels each having a boss-shaped male projection matching said prismatic cross section, said spool drive spigots being slideable on the boss projection of its associated driven wheel; and a stationary abutment on each of said support pins located in said blind hole, wherein the end face of the associated boss projection is urged against said abutment when said driving wheel has been moved a predetermined distance.

Claim 8

The structure as set forth in claim 5 further comprising two spaced flywheels and means for driving the flywheels in opposite directions, capstans carried by the respective flywheels, pressing rollers associated with the respective capstans, two electromagnets with armatures arranged to be connected by the electromagnets, a fork connecting means between the armatures and the fork, the fork engaging one of the drive wheels and on the other hand being connected with one of the pressing rollers so that on excitation of one of the electromagnets one drive wheel is raised out of the first position into the second position and one of the pressing rollers is pressed against the first capstan so as to engage the tape, while on excitation of the other electromagnet the other drive wheel is raised and the other pressing roller is pressed against the second capstan.

Claim 9

A magnetic tape recording drive apparatus, comprising: first and second spaced flywheels; first and second capstans driven by said first and second flywheels, respectively; first and second pressing rollers disposed adjacent said first and second capstans, respectively, for pinching a tape therebetween to drive said tape in a given direction; first and second spaced rotatable driving wheels; first and second spaced spool drive spigots for mounting tape spools thereon; clutch means for engaging one of said drive wheels with its associated spool drive spigot in a first position thereof; brake means for braking said associated spool drive spigot in a second position of said clutch means; a drive motor rotating in the same direction for each of a plurality of operating states of said tape recording apparatus; first connecting means connecting said drive motor to said flywheels for rotating said flywheels, and thereby said capstans, in opposite directions; second connecting means connecting said drive motor to said driving wheels for driving said drive wheels in opposite directions; selection means for selectively engaging one of said capstans with its associated pressing roller for driving said tape in a given direction; means for defining an insertion slot for a commercially available tape cartridge; a resiliently loaded cartridge receiving part associated with the slot; driving openings in the spools of the cartridge being arranged to be aligned with the spool driving spigots when the cartridge is inserted; an actuating device by means of which the cartridge receiving part is pressed against a spring force in a direction perpendicular to the direction of insertion of the cartridge towards the drive wheel, the spool spigots being arranged to be capable of moving back resiliently; and ejection means which eject the cartridge out of the slot when the actuating means is moved in the opposite direction.

Claim 10

A magnetic tape recording drive apparatus, comprising: first and second spaced flywheels; first and second capstans driven by said first and second flywheels, respectively; first and second pressing rollers disposed adjacent said first and second capstans, respectively, for pinching a tape therebetween to drive said tape in a given direction; first and second spaced rotatable driving wheels; first and second spaced spool drive spigots for mounting tape spools thereon; clutch means for engaging one of said drive wheels with its associated spool drive spigot in a first position thereof; brake means for braking said associated spool drive spigot in a second position of said clutch means; a drive motor rotating in the same direction for each of a plurality of operating states of said tape recording apparatus; first connecting means connecting said drive motor to said flywheels for rotating said flywheels, and thereby said capstans, in opposite directions; second connecting means connecting said drive motor to said driving wheels for driving said drive wheels in opposite directions; selection means for selectively engaging one of said capstans with its associated pressing roller for driving said tape in a given direction; means for defining an insertion slot for a commercially available tape cartridge; a resiliently loaded cartridge receiving part associated with the slot; driving openings in the spools of the cartridge being arranged to be aligned with the spool driving spigots when the cartridge is inserted; an actuating device by means of which the cartridge receiving part is pressed against a spring force in a direction perpendicular to the direction of insertion of the cartridge towards the drive wheel, the spool spigots being arranged to be capable of moving back resiliently; and ejection means which eject the cartridge out of the slot when the actuating means is moved in the opposite direction.

Claim 11

A magnetic tape recording drive apparatus, comprising: first and second spaced flywheels; first and second capstans driven by said first and second flywheels, respectively; first and second pressing rollers disposed adjacent said first and second capstans, respectively, for pinching a tape therebetween to drive said tape in a given direction; first and second spaced rotatable driving wheels; first and second spaced spool drive spigots for mounting tape spools thereon; clutch means for engaging one of said drive wheels with its associated spool drive spigot in a first position thereof; brake means for braking said associated spool drive spigot in a second position of said clutch means; a drive motor rotating in the same direction for each of a plurality of operating states of said tape recording apparatus; first connecting means connecting said drive motor to said flywheels for rotating said flywheels, and thereby said capstans, in opposite directions; second connecting means connecting said drive motor to said driving wheels for driving said drive wheels in opposite directions; and selection means for selectively engaging one of said capstans with its associated pressing roller for driving said tape in a given direction.

Claim 12

A magnetic tape recording drive apparatus, comprising: first and second spaced flywheels; first and second capstans driven by said first and second flywheels, respectively; first and second pressing rollers disposed adjacent said first and second capstans, respectively, for pinching a tape therebetween to drive said tape in a given direction; first and second spaced rotatable driving wheels; first and second spaced spool drive spigots for mounting tape spools thereon; clutch means for engaging one of said drive wheels with its associated spool drive spigot in a first position thereof; brake means for braking said associated spool drive spigot in a second position of said clutch means; a drive motor rotating in the same direction for each of a plurality of operating states of said tape recording apparatus; first connecting means connecting said drive motor to said flywheels for rotating said flywheels, and thereby said capstans, in opposite directions; second connecting means connecting said drive motor to said driving wheels for driving said drive wheels in opposite directions; and selection means for selectively engaging one of said capstans with its associated pressing roller for driving said tape in a given direction.

Claim 13

A magnetic tape recording drive apparatus according to claim 8, wherein said selection means comprises: first and second electromagnets; first and second forked members engaging said first and second drive wheels, respectively; first control means connecting said first electromagnet to said first forked member and to said first pressing roller, wherein when said first electromagnet is energized said control means engages said first forked member to move said first driving wheel into engagement with said first driven wheel and said first pressing roller into engagement with said first capstan; second control means connecting said second electromagnet to said second forked member aNd to said second pressing roller, wherein when said second electromagnet is energized said second control means engages said second forked member to move said second drive wheel into engagement with said second driven wheel and said second pressing roller into engagement with said second capstan; and means for selectively energizing said first and second electromagnets, respectively.

Claim 14

The structure as set forth in claim 8 in which the drive motor is so arranged that its shaft is substantially perpendicular in relation to the axes of the flywheels and the driving wheels and lies in the plane which is substantially parallel to the planes running through the tape spools, the flywheels and the drive wheels, the motor being provided with stub shafts at both ends which both lie outside of straight lines which are drawn perpendicular to the axes of the flywheels and the drive wheels, and belt pulleys fitted on the two stub shafts, one belt running over one of the respective pulleys and surrounding the drive wheels and flywheels externally.

Claim 15

A magnetic tape recorder drive apparatus, comprising: first and second stationary support pins; first and second spool drive spigots for mounting two tape spools, respectively, for free rotational movement on said first and second support pins, respectively; transport means for transporting tape between said tape spools in one of two opposite directions at a constant speed, said transport means including first and second flywheels; magnetic head means for recording a signal on or reproducing a signal from said tape while said tape is moving between said two tape spools; first and second driving wheels mounted on said first and second support pins, respectively, for free rotational and axial movement thereon; first and second driven wheels journalled on said first and second support pins, respectively, between said driving wheels and said spool drive spigots for axial movement therealong, said driven wheels being connected to said spool drive spigots for rotation therewith; first and second braking discs stationarily mounted on said first and second support pins, respectively, between said driving wheels and said driven wheels; clutch means for axially moving said first driving wheel from a first position of disengagement from said first driven wheel, which in said first position, engages said braking disc, into a second position wherein said first driving wheel engages said first driven wheel and said first driven wheel is disengaged from said first braking disc; drive means for driving said driving wheels in opposite directions; a drive motor; first connecting means connecting said drive motor with said first and second flywheels for rotating said flywheels in opposite directions; and second connecting means connecting said drive motor with said first and second driving wheels for driving said driving wheels in opposite directions.

Claim 16

A magnetic tape recorder drive apparatus, comprising: first and second stationary support pins; first and second spool drive spigots for mounting two tape spools, respectively, for free rotational movement on said first and second support pins, respectively; transport means for transporting tape between said tape spools in one of two opposite directions at a constant speed, said transport means including first and second flywheels; magnetic head means for recording a signal on or reproducing a signal from said tape while said tape is moving between said two tape spools; first and second driving wheels mounted on said first and second support pins, respectively, for free rotational and axial movement thereon; first and second driven wheels journalled on said first and second support pins, respectively, between said driving wheels and said spool drive spigots for axial movement therealong, said driven wheels being connected to said spool drive spigots for rotation therewith; first and second braking discs stationarily mounted on said first and second support pins, respectively, between said driving wheels and said driven wheels; clutch means for axially moving said first driving wheel from a first position of disengagement from said first driven wheel, which in said first position, engages said braking disc, into a second position wherein said first driving wheel engages said first driven wheel and said first driven wheel is disengaged from said first braking disc; drive means for driving said driving wheels in opposite directions; a drive motor; first connecting means connecting said drive motor with said first and second flywheels for rotating said flywheels in opposite directions; and second connecting means connecting said drive motor with said first and second driving wheels for driving said driving wheels in opposite directions.