Browse Prior Art Database

Selection Mechanism

IP.com Disclosure Number: IPCOM000076510D
Original Publication Date: 1972-Mar-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 3 page(s) / 74K

Publishing Venue

IBM

Related People

Crutcher, BT: AUTHOR [+2]

Abstract

Type element 10 (see Fig. 1) is rotated in variable incremental amounts, by power taken from oppositely directed yieldably biased belt drives 11 and 12, The rotational motion is measured by a planetary motion adding system 13 and is profiled by a controlled motion source, such as a Geneva mechanism 14, to provide a dwell 15 (see Fig. 2) at the time it is desired to cause a print operation.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 52% of the total text.

Page 1 of 3

Selection Mechanism

Type element 10 (see Fig. 1) is rotated in variable incremental amounts, by power taken from oppositely directed yieldably biased belt drives 11 and 12, The rotational motion is measured by a planetary motion adding system 13 and is profiled by a controlled motion source, such as a Geneva mechanism 14, to provide a dwell 15 (see Fig. 2) at the time it is desired to cause a print operation.

Drive belt 11 tends to rotate bevel gear 16 clockwise to thereby tend to cause spider gear 17, which is connected to output shaft 16, to planetate clockwise and thereby drive the output shaft 18 clockwise. Motion of gear 16 is resisted by a normally arrested planetary output gear 19 connected thereto through idler gear 20 and transfer gear 21. Planetary output gear 19 is connected through planet gears 22, ring gear 23, transfer disc 24, and pin 25 to control latch member 26. Planetary output gear 19 is further connected through the planet gears 22, sun gear 27 and transfer disc 28 to a latch member, not shown, that is similar to the latch member 26. Latch member 26 and the other latch member, not shown, are normally intercepted by individually pivoted control stops 29, whereby all motion of the planetary output gear 19 and bevel gear 16 is inhibited. Electromagnet 29a releases stop 29 in accordance with suitable input information. As later described, release of control stop 29 from latch member 26 allows a measured rotation of output gear 19.

Planetary output gears 30 and 31 are also connected to latch members similar to 26 that are intercepted by individual control stops like 29, to selectively permit input motion thereto. Planetary output gear 30 is connected to the sun gear input of planetary output gear 31 through transfer gearing 32. Planetary output gear 31 is connected to a transfer gear 33 to normally inhibit counterclockwise motion of bevel gear 34, by yielding bias of drive belt 12. Counterclockwise rotation of bevel gear 34 tends to cause spider gear 17 to planetate counterclockwise and drive the output shaft 18 counterclockwise.

Measured incremental motion of the type element 10 thus is generated by selective release of the stops like 29, to permit controll...