Browse Prior Art Database

Zero Force Locking Attachment

IP.com Disclosure Number: IPCOM000051495D
Original Publication Date: 1981-Feb-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Dillion, TE: AUTHOR [+4]

Abstract

There is shown and described the mechanical interface which provides engagement between a high speed printer or the like and an automatic sheet feed attachment. The automatic sheet feed attachment gear train is drivingly engaged with the platen drive gear of the printer. When engaged, gravity is the only force maintaining the engagement of the gears. However, the forces produced by the gear locking mechanism are such that the gears cannot be pushed out of engagement with each other. To disengage the interface, one of the gears must be pivoted away from the other.

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Zero Force Locking Attachment

There is shown and described the mechanical interface which provides engagement between a high speed printer or the like and an automatic sheet feed attachment. The automatic sheet feed attachment gear train is drivingly engaged with the platen drive gear of the printer. When engaged, gravity is the only force maintaining the engagement of the gears. However, the forces produced by the gear locking mechanism are such that the gears cannot be pushed out of engagement with each other. To disengage the interface, one of the gears must be pivoted away from the other.

Referring now to the figure, the side frame of the sheet feed attachment 1 includes a pivot stud 2 and a locking stud 3. The gear 4 to be driven is also connected to sheet feed device side frame. Side frame 5 of the printer includes an access opening to platen driving gear 6 which will engage sheet feed gear 4 when it is in its lower position, indicated at 4'. Slots 7 and 8 are provided in frame 5 for receiving attachment studs 2 and 3. Their engaged positions are indicated at 2' and 3' in phantom.

To attach the sheet feed device, the operator tilts it forward and maneuvers it until pivot stud 2 is seated in slot 7. Then the rear of the sheet feed attachment is lowered until stud 3 is locked into slot 8. Removal follows the reverse procedure and the rear of the sheet feed device is pivoted leftwardly about stud 2, bringing stud 3 to its upper phantom position.

The studs and...