Browse Prior Art Database

Incremental Drive Mechanism

IP.com Disclosure Number: IPCOM000097309D
Original Publication Date: 1962-Sep-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 56K

Publishing Venue

IBM

Related People

Lisinski, JE: AUTHOR

Abstract

This incremental drive mechanism is capable of either forward or idle or reverse drive. Ratchet assembly 12 is connected by a shaft to tape feed sprocket 10. A pair of cam followers 22 and 23 is mounted in line with ratchet 12. Cam followers 22 and 23 are oscillated in opposite directions by a pair of escapement cams 28 and 29. These are actuated by motion generating devices 13, driven by constantly rotating drive shaft 15.

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 100% of the total text.

Page 1 of 2

Incremental Drive Mechanism

This incremental drive mechanism is capable of either forward or idle or reverse drive. Ratchet assembly 12 is connected by a shaft to tape feed sprocket 10. A pair of cam followers 22 and 23 is mounted in line with ratchet
12. Cam followers 22 and 23 are oscillated in opposite directions by a pair of escapement cams 28 and 29. These are actuated by motion generating devices 13, driven by constantly rotating drive shaft 15.

Interposer drive rods 41 and 42 are carried by cam followers 22 and 23 for arcuate movement. Rods 41 and 42 are selectively positioned in notches 19 of the ratchet assembly by spring loaded bell cranks 31 and 32. Such drives ratchet wheel 16 and thus sprocket 10. Movements of the bell cranks 31 and 32 are controlled by interposer cams 45 and 46 acting through sliding interposers 47 and 48. These are located between the bell cranks and the interposer cams. Interposer 48 acts on bell crank 31 and interposer 47 on bell crank 32 in order to release the drive rods from the notches. Solenoid 49effects reversal of the position of interposers 47 and 48.

Thus, each bell crank then operates from the opposite interposer cam, reversing the direction of rotation of wheel 16.

Dual latch magnets 51 and 52 control spring loaded armatures 53 and 54. These cooperate with arms 35 and 37 of the bell cranks to latch these arms in an idle condition.

1

Page 2 of 2

2

[This page contains 2 pictures or other non-text objects]