Browse Prior Art Database

Mechanical Logic Module

IP.com Disclosure Number: IPCOM000089536D
Original Publication Date: 1977-Nov-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 58K

Publishing Venue

IBM

Related People

Schaefer, JO: AUTHOR

Abstract

With the advent of more sophisticated mechanical devices, mechanical logic systems are becoming increasingly important. The drawing shows a "circuit", both in detail and in schematic form, in which an "actuation" pulse actuates the module and a control or "keep-alive" pulse maintains it in the active mode.

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 72% of the total text.

Page 1 of 2

Mechanical Logic Module

With the advent of more sophisticated mechanical devices, mechanical logic systems are becoming increasingly important. The drawing shows a "circuit", both in detail and in schematic form, in which an "actuation" pulse actuates the module and a control or "keep-alive" pulse maintains it in the active mode.

The mechanical embodiment of the concept is particularly simple, basically comprising two levers 10 and 12 and a two-lobe cam 11 having a first lobe 13 and a second lobe 14 thereon. The relative positioning of the two cam surfaces may be varied to effect different programming. In the illustrated version, the programming provides for a minimum of two active cycles following key lever actuation.

Referring to the drawing, a single key lever 15 stroke removes the interposer 16 from under lever 10 which, in turn, rides downwardly during the initial portion of the machine cycle as by rotation of the shaft 17. The downward motion of lever 10 creates movement in the output link 18 to effect the desired machine function.

During the downward travel of lever 10, lever 12 is carried downwardly also via the friction couple, placing extension 12a in the path of cam surface 13. Cam 11 acts to move the lever 10 to the right and out of the path of cam surface 14 so that the lever 10 does not reset at the end of the cycle. Thus the system is still active for a second cycle. It should be understood, however, that lever 12 is always reset upwardly by cam 14...