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Remotely Controlled Two Speed Drive Mechanism Having a Clutch

IP.com Disclosure Number: IPCOM000040583D
Original Publication Date: 1987-Dec-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 3 page(s) / 64K

Publishing Venue

IBM

Related People

Richey, JP: AUTHOR [+2]

Abstract

A two-speed drive mechanism, which also has a neutral position when its clutch is inactivated, is moved into either of the two driving speeds through its clutch being activated from a remote control signal. The drive mechanism is mounted on a movable carrier to provide two different feed outputs depending on which of the two drive positions that the clutch is in. The mechanism also has automatic wear compensation. A mechanism 1 is mounted on a movable carrier of a printer, for example, and can be utilized, for example, to feed an increment ribbon mechanism on a printer at two different feed rates in response to a remote control signal. The mechanism 1 includes a drum 2 having a pair of cables 3 and 4 wrapped therearound.

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Remotely Controlled Two Speed Drive Mechanism Having a Clutch

A two-speed drive mechanism, which also has a neutral position when its clutch is inactivated, is moved into either of the two driving speeds through its clutch being activated from a remote control signal. The drive mechanism is mounted on a movable carrier to provide two different feed outputs depending on which of the two drive positions that the clutch is in. The mechanism also has automatic wear compensation. A mechanism 1 is mounted on a movable carrier of a printer, for example, and can be utilized, for example, to feed an increment ribbon mechanism on a printer at two different feed rates in response to a remote control signal. The mechanism 1 includes a drum 2 having a pair of cables 3 and 4 wrapped therearound. The cable 3 has its free end fixed to one side of the printer, and the cable 4 has its free end fixed to the opposite side of the printer from that at which the cable 3 is fixed. Thus, as the carrier moves, one of the cables 3 and 4 is wound upon the drum 2 and the other is removed therefrom. The drum 2 is rotatably supported on a shaft 5 having an output 6 connected thereto. The shaft 5 is connected to the output 6 through a gear 7 attached to the shaft 5 by a pin 8. The gear 7 has a clutch 9 cooperating with an upper end 10 of the drum 2 when the drum 2 is raised by clockwise rotation of an actuator 11, which has a finger 12 disposed within a slot 13 in the bottom of the drum 2, about a pivot pin 14. The drum 2 has its lower end 15 cooperating with a clutch 16, which is attached to a gear 17. The gear 17 is connected through a gear 18, a shaft 19, and a gear 20 with the gear 7. Thus, when the lower end 15 of the drum 2 engages the clutch 16 through the actuator 11 being pivoted counterclockwise about the pivot pin 14, rotation of the output 6 is produced through the gears 17 and 18, the shaft 19, the gears 20 and 7, and the shaft 5. When the actuator 11 is in the position of the drawing, the drum 2 rotates without driving the output 6. This is the neutral position of the mechanism 1 in which a solenoid 21 is energized so its plunger 22 is pulled downwardly against the force of a spring 23. The spring 23 has its ends attached to the actuator 11 and the plunger 22. When there is a power on reset (POR), the carrier, which supports the mechanism 1, is moved to its extreme left until it contacts a stop on the printer. As the carrier moves to this home position with POR, a selected link 24 engages the left side of the frame of the printer to move to the right to cause a toggle plate link actuator 25 to pivot counterclockwise about a pivot pin 26 to pull a connecting link 27 to the left. The connecting link 27 is connected to a shift link 28, which is pivotally mounted on the plunger 22 of the solenoid 21 by a pivot pin
29. This movement of the sele...