Browse Prior Art Database

Velocity and Deceleration Sensors

IP.com Disclosure Number: IPCOM000093089D
Original Publication Date: 1967-May-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 88K

Publishing Venue

IBM

Related People

Amos, LG: AUTHOR [+2]

Abstract

Switches, controlled by velocity or deceleration, supply electrical interlock or reset indications in connection with printer tab operations. Printer 1 has print head 2 that is rotated and tilted to select characters under control of selection block 3 and keys 4. After selection, head 3 is actuated against document 5 by rocker 6. Rocker 6 is supported by carrier 7. The latter is moved to the right during spacing and tab operations by cord 8. Carrier 7 is moved to the left during backspacing and carrier return operations by cord 9.

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Velocity and Deceleration Sensors

Switches, controlled by velocity or deceleration, supply electrical interlock or reset indications in connection with printer tab operations. Printer 1 has print head 2 that is rotated and tilted to select characters under control of selection block 3 and keys 4. After selection, head 3 is actuated against document 5 by rocker 6. Rocker 6 is supported by carrier 7. The latter is moved to the right during spacing and tab operations by cord 8. Carrier 7 is moved to the left during backspacing and carrier return operations by cord 9.

Depression of tab key 10 sets tab latch 11 and rotates torque bar 12 to release carrier 7 for movement to a set tab stop, such as stop 13, on rack 14. Mainspring 15 maintains rotary tension on shaft 16 and cord drum 17 to move carrier 7 to the right. When tab stop 13 is reached, carrier 7 stops, shaft 16 ceases to rotate and sensor 18 supplies, for example, an end of tab indication or other indications by reed switch 19 to resettab latch 11.

Sensor 18 can have several forms as in drawings B, C, and D, with alternate directions of shaft rotation as indicated. The sensor in B senses shaft 16a rotation velocity above a predetermined value. Centrifugal force at or above the selected value acts on weight 20 to move shunt arm 21 in the direction of arrow
22. Magnet 23 then operates switch 19a.

In C, weight 24 maintains shunt arm 25 against backstop 26 during rotation of shaft 16b. When shaft 27 suddenly cease...