Browse Prior Art Database

Automatic Starting and Timing

IP.com Disclosure Number: IPCOM000095912D
Original Publication Date: 1964-Sep-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 73K

Publishing Venue

IBM

Related People

Schaefer, JO: AUTHOR

Abstract

The device responds to depression of any typewriter key, such as 1, to start drive motor 2, to maintain motor 2 in operation during active typing, and to turn motor 2 off at the end of a predetermined time of idleness.

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Automatic Starting and Timing

The device responds to depression of any typewriter key, such as 1, to start drive motor 2, to maintain motor 2 in operation during active typing, and to turn motor 2 off at the end of a predetermined time of idleness.

Depression of key 1 rotates bail 3 to disengage latch 4 from notch 5 of hub member 6. Latch lever portion 7 closes switch contacts 8 to apply electrical power to motor 2. Hub 6 is rotated in a clockwise direction due to force exerted by spring 9 and an initial impetus is given to motor 2 through spring clutch 10 under control of link 11 and spring 9. Motor 2 drives the mechanism through a cable 12, gears at 13 and 14, and gear 15 for timing purposes. As gear 15 and hub 6 near the end of a cycle of rotation. pin 16 pulls link 17 upwardly.

Just before pin 16 reaches top dead center, interposer 18 latches on the top surface of plate 19. Continued rotation of the mechanism results in movement of notch 5 adjacent the extension of latch 4. Soon after dead center, unlatching lever 20 is moved by lug 21 and unlatches plate 19 by lifting spring pawl 22. However, plate 19 is retained in the position shown due to the force exerted by spring 9 through interposer 18 on the top of plate 19 and does not effect restoration of the mechanism at this time. Pawl 22 elongates slightly upon release and does not reset in the path of plate 19.

Gear 15 and hub 6 are now rotated through another cycle and interposer 18 is pulled upwardly as befo...