US3233807A - Roller mechanism - Google Patents
Roller mechanism Download PDFInfo
- Publication number
- US3233807A US3233807A US372202A US37220264A US3233807A US 3233807 A US3233807 A US 3233807A US 372202 A US372202 A US 372202A US 37220264 A US37220264 A US 37220264A US 3233807 A US3233807 A US 3233807A
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- United States
- Prior art keywords
- shaft
- supporting
- pressure roller
- arm
- capstan
- Prior art date
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- Expired - Lifetime
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
- G11B15/26—Driving record carriers by members acting directly or indirectly thereon
- G11B15/28—Driving record carriers by members acting directly or indirectly thereon through rollers driving by frictional contact with the record carrier, e.g. capstan; Multiple arrangements of capstans or drums coupled to means for controlling the speed of the drive; Multiple capstan systems alternately engageable with record carrier to provide reversal
- G11B15/29—Driving record carriers by members acting directly or indirectly thereon through rollers driving by frictional contact with the record carrier, e.g. capstan; Multiple arrangements of capstans or drums coupled to means for controlling the speed of the drive; Multiple capstan systems alternately engageable with record carrier to provide reversal through pinch-rollers or tape rolls
Definitions
- lMagnetic tape which stores binary or video information may be required to be driven at relatively high speed.
- the means employed may include a continuously rotating capstan over which the magnetic tape passes, and a pressure or pinch roller which, when actuated, bears against the magnetic tape and capstan, thereby causing the capstan to drive the tape.
- a pressure or pinch roller which, when actuated, bears against the magnetic tape and capstan, thereby causing the capstan to drive the tape.
- the object of the present invention is to provide an improved means for aligning a pressure roller with respect to a capstan.
- the pressure roller which is engageable with a capstan, is supported by au arm, and this arm is mounted on a shaft which is essentially parallel to the roller.
- One end of the shaft remains in a relatively fixed position and serves as a fulcrum.
- the other end of the shaft is mounted on a supporting element which may be resiliently mounted along a portion of its peripheral surface.
- Means are provided for adjusting the position of the supporting member, thereby slightly deformng the resilient material. The adjustment of the position of the supporting member slightly tilts the shaft about its fulcrum. This tilting of the shaft is translated by the arm to a corresponding tilting of the pressure roller.
- FIGURE 1 is a plan view of 'the arrangement of the invention.
- FIGURE 2 is a cross-sectional View taken along the line 2-2 of FIGURE 1.
- the metal frame shown in the gures supports a shaft 12.
- the shaft is supported at opposite ends by bearings 14 and 16 which permit the shaft to rotate about its axis through a small angle.
- the upper bearing 14 is fixed to a supporting element 18.
- a crescent-shaped resilient element which, for example, may be formed of rubber, is located between the supporting element 18 and the portion 22 of the frame 10.
- the supporting element 18 is formed with ats 24 and 26 along the edge portions opposite the resilient element 22 of the supporting element. These tiats 24 and 26 are preferably substantially at right angles to one another.
- Adjustment screws 28 and 30 are mountted in the frame 10 and bear against the ilats 24 and 26 of the supporting element 18. The purpose of these screws is to change the position of the supporting element 18 and, in this way, to adjust the angle of tilt of the shaft 12. This is discussed in more detail later.
- the shaft 12 supports an arm 32.
- One end of the arm 32 is formed as a yoke 34a, 34b which supports the axle 36 of a pressure roller 38.
- the pressure roller includes an outer surface 40 formed of a resilient material such as rubber, an inner portion 42 which is preferably formed of a metal, and bushings 44 and 46.
- the plunger 48 of a solenoid 50 is fixed to the other end 52 of the arm 32.
- the shaft 12 serves as a fulcrum for the arm 32.
- a spring 54 which is supported in an 3,233,87 Patented Feb. S, 1966 ICC aperture in the frame 10, serves to bias the arm'- to' the position shown, when the solenoid 50 is in its unenergized condition. In the position of the arm shown, thepressure roller 38 is out of engagement with 'the capstan 56.
- the solenoid 50 when the solenoid 50 is actuated, the plunger 48 moves into the solenoid, and the arm 52 and shaft 12 rotate through a small angle. This causes the pressure roller 38 to move into engagement with the magnetic tape 58 and capstan 56.
- the capstan in general, is continuously rotating so that, when the solenoid is actuated, the pressure roller causes the magnetic tape to bear against the rotating capstan 56 and the tape is driven. As mentioned in the introduction, it is important that the tape be driven accurately. Accuracy is achieved when the pressure roller 38 is exactly parallel to the capstan 56.
- the present arrangement provides means for insuring that the pressure roller is accurately aligned.
- the shaft 12 is slightly misaligned in the direction of arrow 60 of FIGURE 1.
- Adjustment of screw 28 causes the supporting element 18 to move.
- the supporting element 18 moves against the rubber element 20 slightly compressing the rubber.
- the shaft is mounted in bearings which have a loose internal clearance to permit a slight amount of tilting of the shaft, say through a solid angle of a few degrees, without binding or freezing in the bearing.
- the supporting member 18 moves the upper end 12a of the shaft through an angle in the direction of arrows 62, the bearing 16 serving as a fulcrum for the shaft.
- the arm 32 which is supported by shaft 12, causes the axle 36 of the drive roller to tilt in the same direction, as indicated by arrows 66 of FIGURE 1.
- Adjustment of screw 30 of FIGURE 1 causes the supporting element 18, and along with it t-he upper end of the shaft 12, to be moved in the direction of arrow 68 of FIGURE l in a manner similar to that just described. This causes a corresponding movement of axle 36 of the pressure roller and permits alignment of shaft 36 with shaft 64 of the capstan 56 in the direction 70.
- the adjustment of screw 30 is for purposes of reducing skew distortion to the tape.
- Skew is the tendency of the tape slightly to twist, and such motion is undesirabie because it causes slight misalignment of the tracks on the tape with the read-write heads.
- Adjustment of screw 28 controls the amount of crossdrive imparted to the tape.
- Crossdrive is the tendency of the one edge of the tape to flutter or ripple as the tape is being driven.
- KIt is due to the misalignment of the capstan axle 64 with the pressure roller axle 36 in the direction of the arrow 66. This misalignment is believed to cause one edge of the tape to travel at a slightly different speed than the other edge of the tape.
- the force vector due to the force of the pressure roller against the capstan and the drag of the magnetic tape is in the direction of the adjustment screws. This makes this supporting element act as if it were a solid member of the frame.
- the frame 10 is secured to the supporting structure 81 by means of a shoulder screw 83 which passes through the tail stock 8S.
- a nut 87 which is positioned beneath the head of the screw 83 is rotatable about the screw.
- the nut is, in reality, an eccentric adjustment which causes the frame to move in the direction of arrows 89 (FIGURE 1) about a pivot point 91 located beneath the 3 frame.
- the pivot point is indicated by the legended arrow in FIGURE 2 and as a cross in FIGURE l to keep the drawings simple.
- the pivot includes a shaft (actually a screw) which is fixed to the structure 8l and which passes through a hole in the underside of the fram-e.
- the pivot point is behind the shaft 12, as indicated in FIGURE l.
- Adjustment of the eccentric S7 affects the spacing between the pressure roller and the capstan.
- a final adjustment which is possible is that of the set screw 93.
- This screw bears against the arm 32 and affects the spacing between the solenoid Si) and its plunger when the relay is in its de-energized condition.
- the screw accordingly, also affects the spacing between the pressure roller and the capstan when the pressure roller is out of engagement with the capstan.
- rst supporting means for supporting one end portion of the shaft in a given position
- a pressure roller the axle of which is supported by said arm in a position substantially parallel to said shaft.
- first supporting means for rotatably supporting one end portion of the shaft in a given position
- a pressure roller the axle of which is supported by said arm in a position substantially parallel to said shaft.
- first supporting means for rotatably supporting one end portion of the shaft in a given position
- capstan which is -substantially parallel to the pressure roller and is engageable by the pressure roller
- rst supporting means mounted in said frame for supporting one end portion of the shaft in a given position
- second supporting means for supporting the opposite end portion of the shaft, said second supporting means including a member through which the shaft passes, and resilient means located between at least 4. one peripheral edge portion ⁇ of the member and said" ⁇ - ⁇ frame; adjusting means in said frame for exerting pressure against the peripheral edge portion of said member opposite from the portion thereof at which the resillient means is located, .for moving said second sup-v porting means, thereby slightly deforming said resilient means, in a direction substantially.perpendicular to the shaft axis, whereby the positionk ⁇ of said opposite end portion of said shaft is changed;
- a pressure roller the axle of which is suppbted by* said ⁇ arm .in a position substantially parallcitosa-id# shaft.
- first supportingmeans mounted insaid frame for supporting one end portion of the shaft in a given position
- said second supporting means includingI a member through which then shaft passes, said Imember being formed with mutually perpenf dicular edges along one peripheral portion thereof* :and with a circular edge along a peripheral portion thereof opposite to said perpendicular edges, and resilient means located between said circular edge portion of the member' and. said'frame;
- first supporting means mounted in said frame yfor supporting one end portion of the shaft in a given position
- said second supporting means including a lmember through which ⁇ the shaft passes, said member being formed with mutually perpendicular edges along one peripheral portion thereof and with a circular edge along ⁇ a peripheral portion thereof opposite to said perpendicular edges, and a rubber element shaped to conform to the circular edge portion of the member and located between said rne'mber and said frame;
- first supporting means in said frame for'rotatably sup porting one end portion of the shaft in a given position
- second supporting means in said frame for rotatably supporting the opposite end portion of the shaft, said second means ⁇ comprising a substantially planar element 4formed with an aperture;
- adjusting means for adjusting the position of the second supporting means in two substantially mutually perpendicular directions which are both substantially perpendicular to the shaft ⁇ axis and thereby adjusting the position of said opposite end portion of the shaft, said adjusting means comprising threaded elements mounted in the frame which bear against edge portions of the planar element opposite the edge portion thereof at which the resilient member is located;
- a capstan which is substantially parallel to the pressure roller and which is engageable by the pressure roller;
- a pressure roller having an axle which is mounted in the yoke substantially parallel to the shaft;
- first supporting means rotatably supporting one end of the shaft
Landscapes
- Rolls And Other Rotary Bodies (AREA)
Description
Feb. s, 1966 D. J. WRAY 3,233,807
ROLLER MECHANISM Filed June 5, 1964 INVENTOR. .D4/WFL W64/ United States Patent O 3,233,807 ROLLER MECHANISM Daniel J. Wray, Jupiter, Fla., assignor to Radio Corporation of America, a corporation of Delaware Filed June 3, 1964, Ser. No. 372,202 8 Claims. (Cl. 226-180) This invention relates to an improved arrangement for aligning a pressure or pinch roller.
lMagnetic tape which stores binary or video information may be required to be driven at relatively high speed. The means employed may include a continuously rotating capstan over which the magnetic tape passes, and a pressure or pinch roller which, when actuated, bears against the magnetic tape and capstan, thereby causing the capstan to drive the tape. To insure that the tape is guided accurately, it is important that the surface of the pressure roller be absolutely parallel t the surface of the capstan, along the areas of the respective surfaces where they make Contact.
The object of the present invention is to provide an improved means for aligning a pressure roller with respect to a capstan.
In the arrangement of the invention, the pressure roller, which is engageable with a capstan, is supported by au arm, and this arm is mounted on a shaft which is essentially parallel to the roller. One end of the shaft remains in a relatively fixed position and serves as a fulcrum. The other end of the shaft is mounted on a supporting element which may be resiliently mounted along a portion of its peripheral surface. Means are provided for adjusting the position of the supporting member, thereby slightly deformng the resilient material. The adjustment of the position of the supporting member slightly tilts the shaft about its fulcrum. This tilting of the shaft is translated by the arm to a corresponding tilting of the pressure roller.
The invention is discussed in greater detail below and is shown in the following drawings, of which:
FIGURE 1 is a plan view of 'the arrangement of the invention; and
FIGURE 2 is a cross-sectional View taken along the line 2-2 of FIGURE 1.
The metal frame shown in the gures supports a shaft 12. The shaft is supported at opposite ends by bearings 14 and 16 which permit the shaft to rotate about its axis through a small angle.
The upper bearing 14 is fixed to a supporting element 18. A crescent-shaped resilient element which, for example, may be formed of rubber, is located between the supporting element 18 and the portion 22 of the frame 10. The supporting element 18 is formed with ats 24 and 26 along the edge portions opposite the resilient element 22 of the supporting element. These tiats 24 and 26 are preferably substantially at right angles to one another.
The shaft 12 supports an arm 32. One end of the arm 32 is formed as a yoke 34a, 34b which supports the axle 36 of a pressure roller 38. The pressure roller includes an outer surface 40 formed of a resilient material such as rubber, an inner portion 42 which is preferably formed of a metal, and bushings 44 and 46.
The plunger 48 of a solenoid 50 is fixed to the other end 52 of the arm 32. The shaft 12 serves as a fulcrum for the arm 32. A spring 54, which is supported in an 3,233,87 Patented Feb. S, 1966 ICC aperture in the frame 10, serves to bias the arm'- to' the position shown, when the solenoid 50 is in its unenergized condition. In the position of the arm shown, thepressure roller 38 is out of engagement with 'the capstan 56.
In the operation of the pressure roller system shown, when the solenoid 50 is actuated, the plunger 48 moves into the solenoid, and the arm 52 and shaft 12 rotate through a small angle. This causes the pressure roller 38 to move into engagement with the magnetic tape 58 and capstan 56. The capstan, in general, is continuously rotating so that, when the solenoid is actuated, the pressure roller causes the magnetic tape to bear against the rotating capstan 56 and the tape is driven. As mentioned in the introduction, it is important that the tape be driven accurately. Accuracy is achieved when the pressure roller 38 is exactly parallel to the capstan 56.
The present arrangement provides means for insuring that the pressure roller is accurately aligned. During the initial assembly of the arrangement above, that is, with the adjustment screws 28 and 30 exerting very little pressure against the ats 26 and 24, respectively, the shaft 12 is slightly misaligned in the direction of arrow 60 of FIGURE 1. Adjustment of screw 28 causes the supporting element 18 to move. For example, when the screw 28 is turned clockwise, the supporting element 18 moves against the rubber element 20 slightly compressing the rubber. The shaft is mounted in bearings which have a loose internal clearance to permit a slight amount of tilting of the shaft, say through a solid angle of a few degrees, without binding or freezing in the bearing. Therefore, when the screw 28 is adjusted, the supporting member 18 moves the upper end 12a of the shaft through an angle in the direction of arrows 62, the bearing 16 serving as a fulcrum for the shaft. When shaft 12. tilts, the arm 32, which is supported by shaft 12, causes the axle 36 of the drive roller to tilt in the same direction, as indicated by arrows 66 of FIGURE 1.
Adjustment of screw 30 of FIGURE 1 causes the supporting element 18, and along with it t-he upper end of the shaft 12, to be moved in the direction of arrow 68 of FIGURE l in a manner similar to that just described. This causes a corresponding movement of axle 36 of the pressure roller and permits alignment of shaft 36 with shaft 64 of the capstan 56 in the direction 70.
The adjustment of screw 30 is for purposes of reducing skew distortion to the tape. Skew is the tendency of the tape slightly to twist, and such motion is undesirabie because it causes slight misalignment of the tracks on the tape with the read-write heads. Adjustment of screw 28 controls the amount of crossdrive imparted to the tape. Crossdrive is the tendency of the one edge of the tape to flutter or ripple as the tape is being driven. KIt is due to the misalignment of the capstan axle 64 with the pressure roller axle 36 in the direction of the arrow 66. This misalignment is believed to cause one edge of the tape to travel at a slightly different speed than the other edge of the tape.
The force vector due to the force of the pressure roller against the capstan and the drag of the magnetic tape is in the direction of the adjustment screws. This makes this supporting element act as if it were a solid member of the frame.
The frame 10 is secured to the supporting structure 81 by means of a shoulder screw 83 which passes through the tail stock 8S. A nut 87 which is positioned beneath the head of the screw 83 is rotatable about the screw. The nut is, in reality, an eccentric adjustment which causes the frame to move in the direction of arrows 89 (FIGURE 1) about a pivot point 91 located beneath the 3 frame. The pivot point is indicated by the legended arrow in FIGURE 2 and as a cross in FIGURE l to keep the drawings simple.
In practice, the pivot includes a shaft (actually a screw) which is fixed to the structure 8l and which passes through a hole in the underside of the fram-e. The pivot point is behind the shaft 12, as indicated in FIGURE l. Adjustment of the eccentric S7 affects the spacing between the pressure roller and the capstan.
A final adjustment which is possible is that of the set screw 93. This screw bears against the arm 32 and affects the spacing between the solenoid Si) and its plunger when the relay is in its de-energized condition. The screw, accordingly, also affects the spacing between the pressure roller and the capstan when the pressure roller is out of engagement with the capstan.
What is claimed is:
1. In combination,
a shaft;
rst supporting means for supporting one end portion of the shaft in a given position;
second supporting means for supporting the opposite end portion of the shaft;
means for adju-sting the position of the second supporting means in a direction substantially perpendicular to the shaft axis and thereby adjusting the position of said opposite end portion of the shaft;
an arm supported by the shaft; and
a pressure roller, the axle of which is supported by said arm in a position substantially parallel to said shaft.
2. In combination,
a shaft;
first supporting means for rotatably supporting one end portion of the shaft in a given position;
second supporting means for rotatably supporting the opposite end portion of the shaft;
means for adjusting the position of the second supporting means in two substantially mutually perpendicular directions which are both substantially perpendicular to the shaft axis and thereby adjusting the position of said opposite end portion of the shaft;
an arm supported by the shaft; and
a pressure roller, the axle of which is supported by said arm in a position substantially parallel to said shaft.
3. In combination,
a shaft;
first supporting means for rotatably supporting one end portion of the shaft in a given position;
second snporting means for rotatably supporting the opposite end portion of the shaft;
means for adjusting the position of the second support* ing means in two substantially mutually perpendicular directions which are both substantially perpendicular to the shaft axis and thereby adjusting the position of said opposite end portion of the shaft;
an arm supported by the shaft;
a pressure roller, the axle of which is supported by said arm in a position substantially parallel to said shaft;
a capstan which is -substantially parallel to the pressure roller and is engageable by the pressure roller; and
means for moving said arm and shaft through an angle such that the roller engages the capstan.
4. In combination,
a frame;
a shaft;
rst supporting means mounted in said frame for supporting one end portion of the shaft in a given position;
second supporting means for supporting the opposite end portion of the shaft, said second supporting means including a member through which the shaft passes, and resilient means located between at least 4. one peripheral edge portion `of the member and said"`-` frame; adjusting means in said frame for exerting pressure against the peripheral edge portion of said member opposite from the portion thereof at which the resillient means is located, .for moving said second sup-v porting means, thereby slightly deforming said resilient means, in a direction substantially.perpendicular to the shaft axis, whereby the positionk `of said opposite end portion of said shaft is changed;
an arm supported by the shaft; and
a pressure roller, the axle of which is suppbted by* said `arm .in a position substantially parallcitosa-id# shaft.
5. In combination',
a frame;
:a shaft; n
first supportingmeans mounted insaid frame for supporting one end portion of the shaft in a given position;
secon-d supporting means forisupporting the opposite end of the shaft, said second supporting means includingI a member through which then shaft passes, said Imember being formed with mutually perpenf dicular edges along one peripheral portion thereof* :and with a circular edge along a peripheral portion thereof opposite to said perpendicular edges, and resilient means located between said circular edge portion of the member' and. said'frame;
adjusting screws in said frame, the end-s of which respectively bear against said. mutually perpendicular edges for moving said second supporting means, thereby slightly deforming said resilient means, in mutually perpendicular directions which are both substantially perpendicular to the shaft axis, whereby the position lof said opposite end portion yof said shaft may be changed;
an arm -supported by the shaft;
-a pressure roller, the axle of which is` supported by said arm in a position substantially parallel to said, shaft; and
a capstan which is engageable by thepressure roller.
6. In combination,
a frame;
a shaft;
first supporting means mounted in said frame yfor supporting one end portion of the shaft in a given position;
secon-d supporting means for supporting the opposite end portion ofthe shaft, said second supporting means including a lmember through which` the shaft passes, said member being formed with mutually perpendicular edges along one peripheral portion thereof and with a circular edge along` a peripheral portion thereof opposite to said perpendicular edges, and a rubber element shaped to conform to the circular edge portion of the member and located between said rne'mber and said frame;
adjusting screws in said frame, the ends of which respectively bear against said mutually perpendicular edges for moving said second supporting means, thereby slightly` `deforming -said rubber element, in mutually perpendicular directions which are both substantially perpendicular to the shaft axis, whereby the position |of said `opposite end portion of said shaft may be changed;
an armv supported by the shaft;
a pressure roller,` the axle of which is supported by said arm in a position substantially parallel to said shaft; and
a capstan which is engageable by the pressure roller.
'7. In combination,
a shaft;
a supporting frame;
first supporting means in said frame for'rotatably sup porting one end portion of the shaft in a given position;
second supporting means in said frame for rotatably supporting the opposite end portion of the shaft, said second means `comprising a substantially planar element 4formed with an aperture;
a bushing in which said opposite end portion of the shaft is mounted, located in said aperture and fixed -to said planar element, and a crescent-shaped resilient member located between an edge portion of the planar element and the frame;
adjusting means for adjusting the position of the second supporting means in two substantially mutually perpendicular directions which are both substantially perpendicular to the shaft `axis and thereby adjusting the position of said opposite end portion of the shaft, said adjusting means comprising threaded elements mounted in the frame which bear against edge portions of the planar element opposite the edge portion thereof at which the resilient member is located;
an arm supported by the shaft;
a pressure roller, the axle of which is supported by said .arm in a position substantially parallel to said shaft;
a capstan which is substantially parallel to the pressure roller and which is engageable by the pressure roller; and
means for moving said arm and shaft through an angle such that the roller engages the capstan.
8. In combination,
a shaft;
a yoke fixed to the shaft;
a pressure roller having an axle which is mounted in the yoke substantially parallel to the shaft;
first supporting means rotatably supporting one end of the shaft;
second supporting means rotatably support-ing the other end of the shaft; and
means for adjusting the position of the second supporting means in a direction substantially perpendicular to the shaft axis `and thereby adjusting the position of said one end of the shaft.
References Cited by the Examiner UNITED STATES PATENTS 642,141 1/1900 Lyon 226--180 X 2,721,650 10/ 1955 Cummings 226-180 X 2,988,257 6/ 1961 Lasarev 226-194 X M. HENSON WOOD, IR., Primary Examiner.
Claims (1)
1. IN COMBINATION, A SHAFT; FIRST SUPPORTING MEANS FOR SUPPORTING ONE END PORTION OF THE SHAFT IN A GIVEN POSITION; SECOND SUPPORTING MEANS FOR SUPPORTING THE OPPOSITE END PORTION OF THE SHAFT; MEANS FOR ADJUSTING THE POSITION OF THE SECOND SUPPORTING MEANS IN A DIRECTION SUBSTANTIALLY PERPENDICULAR
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US372202A US3233807A (en) | 1964-06-03 | 1964-06-03 | Roller mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US372202A US3233807A (en) | 1964-06-03 | 1964-06-03 | Roller mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3233807A true US3233807A (en) | 1966-02-08 |
Family
ID=23467131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US372202A Expired - Lifetime US3233807A (en) | 1964-06-03 | 1964-06-03 | Roller mechanism |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3233807A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3353733A (en) * | 1964-12-28 | 1967-11-21 | Potter Instrument Co Inc | Pinch roller mechanism |
| US3385496A (en) * | 1966-06-22 | 1968-05-28 | Control Data Corp | Dynamic tape skew correction |
| US3438558A (en) * | 1967-01-20 | 1969-04-15 | Vm Corp | Tape drive arrangement with selfaligning pressure roller |
| US3490669A (en) * | 1967-12-19 | 1970-01-20 | Rca Corp | Tape handling apparatus |
| US3506271A (en) * | 1964-10-31 | 1970-04-14 | Loewe Opta Gmbh | Device for guiding and driving linear recording carriers in apparatuses for magnetic signal recording and reproducing |
| US3750924A (en) * | 1972-01-17 | 1973-08-07 | O Pepper | Web tensioner and guide system |
| US3977589A (en) * | 1975-04-14 | 1976-08-31 | Vamco Machine And Tool, Inc. | Idler roller assembly for punch press feed |
| US4228972A (en) * | 1979-05-04 | 1980-10-21 | Bell & Howell Company | Web supply and take-up system |
| FR2541256A1 (en) * | 1983-02-18 | 1984-08-24 | Buralkin Vadim | Tape driver |
| US4497426A (en) * | 1980-09-25 | 1985-02-05 | Olympus Optical Co., Ltd. | Mechanism of controlling parallelism between the pinch roller and capstan shaft |
| US4768890A (en) * | 1984-09-12 | 1988-09-06 | Kabushiki Kaisha Sato | Carbon ribbon transport guide device |
| USRE32775E (en) * | 1984-07-23 | 1988-11-01 | Sanders Associates, Inc. | Pinch roller assembly |
| US4884085A (en) * | 1984-05-19 | 1989-11-28 | Canon Kabushiki Kaisha | Recorder having record medium feed and press rollers and lockable means for urging the press rollers to and from the feed roller |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US642141A (en) * | 1899-04-05 | 1900-01-30 | Fred Lyon | Web shifter and regulator. |
| US2721650A (en) * | 1952-01-24 | 1955-10-25 | American Cyanamid Co | Pinch-roll assembly |
| US2988257A (en) * | 1958-09-15 | 1961-06-13 | Ampex | Capstan drive assembly |
-
1964
- 1964-06-03 US US372202A patent/US3233807A/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US642141A (en) * | 1899-04-05 | 1900-01-30 | Fred Lyon | Web shifter and regulator. |
| US2721650A (en) * | 1952-01-24 | 1955-10-25 | American Cyanamid Co | Pinch-roll assembly |
| US2988257A (en) * | 1958-09-15 | 1961-06-13 | Ampex | Capstan drive assembly |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3506271A (en) * | 1964-10-31 | 1970-04-14 | Loewe Opta Gmbh | Device for guiding and driving linear recording carriers in apparatuses for magnetic signal recording and reproducing |
| US3353733A (en) * | 1964-12-28 | 1967-11-21 | Potter Instrument Co Inc | Pinch roller mechanism |
| US3385496A (en) * | 1966-06-22 | 1968-05-28 | Control Data Corp | Dynamic tape skew correction |
| US3438558A (en) * | 1967-01-20 | 1969-04-15 | Vm Corp | Tape drive arrangement with selfaligning pressure roller |
| US3490669A (en) * | 1967-12-19 | 1970-01-20 | Rca Corp | Tape handling apparatus |
| US3750924A (en) * | 1972-01-17 | 1973-08-07 | O Pepper | Web tensioner and guide system |
| US3977589A (en) * | 1975-04-14 | 1976-08-31 | Vamco Machine And Tool, Inc. | Idler roller assembly for punch press feed |
| US4228972A (en) * | 1979-05-04 | 1980-10-21 | Bell & Howell Company | Web supply and take-up system |
| US4497426A (en) * | 1980-09-25 | 1985-02-05 | Olympus Optical Co., Ltd. | Mechanism of controlling parallelism between the pinch roller and capstan shaft |
| FR2541256A1 (en) * | 1983-02-18 | 1984-08-24 | Buralkin Vadim | Tape driver |
| US4884085A (en) * | 1984-05-19 | 1989-11-28 | Canon Kabushiki Kaisha | Recorder having record medium feed and press rollers and lockable means for urging the press rollers to and from the feed roller |
| USRE32775E (en) * | 1984-07-23 | 1988-11-01 | Sanders Associates, Inc. | Pinch roller assembly |
| US4768890A (en) * | 1984-09-12 | 1988-09-06 | Kabushiki Kaisha Sato | Carbon ribbon transport guide device |
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