Lenaerts Notebook 38 (30 Oct 1962 - 8 Mar 1963)
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Notebook kept by Ernest Lenaerts during his work on the LEO computer. Includes entries: NB38-001: Front cover
NB38-002: Inside front cover and October 30 1962, Agenda for Decca meeting
NB38-003: Analex printer, TSU test, tractor
NB38-004: List of outstanding subjects, high and low speed print tests
NB38-005: November 5 1962 list of outstanding tasks
NB38-006: List of items for library, hammer wanted for print tests
NB38-007: Printing on card with carbon copies, ghosting problems
NB38-008: Contact names
NB38-009: To do list for library
NB38-010: Edgar Steiner, USA to do tests on paper
NB38-011: November 8 1962, outstanding tasks list,
NB38-012: Stacking device, ribbon life
NB38-013: Organising social clubs
NB38-014: November 12 1962, possibility of using Analex 300 printer with LEO
NB38-015: List of letters and meetings high speed camera
NB38-016: High speed camera cont., sunbeam mixer motor
NB38-017: Representative name [from Loctite], measurements for shelves, cupboards [for library]
NB38-018: Board measurements for library
NB38-019: November 22 1962, LEO II/5 spools chipping hubs, cleaning and other tape deck issues
NB38-020: Tape spools cont., spool sent from Ilford
NB38-021: Journal articles, to do list, Analex hammer
NB38-022: Library meeting, stationary including carbons vs NCR (no carbon required) and US paper
NB38-023: November 29 1962,almost empty pages - camera sprocket drive
NB38-024: People responsible for statistics on returned components, grease problems in ball races
NB38-025: Ball races cont., library shelving diagram
NB38-026: Write to Ampex about actuator tests, more library specifications
NB38-027: FR300 tape decks and reactive pressure blowers, LEO III [engineering] meeting
NB38-028: LEO III/2 and III/3, other misc. items
NB38-029: Tape rewind, LEO III/1 list
NB38-030: Dirt, print quality, fault times
NB38-031: December 11 1962, Decca tape spool, pinch rollers, library book budget
NB38-032: Stuart Williams, new printer mechanism
NB38-033: December 13 1962, pinch rollers, grit and rubber quality
NB38-034: December 14 1962, LEO I out of service 1966, list of valves with comments
NB38-035: Christmas card list, list of [transistors]
NB38-036: To do - get requirements LEO II & III, electronic parts, maintenance
NB38-037: High cost of American components, book reference
NB38-038: Shut down durations
NB38-039: December 19 (?) 1962,Visit to P. W. Mann, description of their installation (Honeywell)
NB38-040: P.W. Mann cont., peripherals
NB38-041: December 19 1962,[tape] recorder problems at Hartree house
NB38-042: Factors to consider for peripherals, dirt on printer hammers of II/4
NB38-043: Hammers cont., micro[?] for small adjustments of position
NB38-044: December 27 1962, allocation of tasks, equipment problems
NB38-045: Purchase of camera, [circuit] diagram
NB38-046: To do list, 2 x diagrams
NB38-047: Return of components, cost of [?]
NB38-048: January 2 1963: Anakex printer hammer tests, actuator specifications
NB38-049: Note to send list of books, list of requirements for a car
NB38-050: January 7 1963, car requirements cont., visit by MD of Harot Buckley
NB38-051: January 7 1963 and January 8 1963, Decca spec. for tape, discussions with ABB
NB38-052: Reference on thyratrons, figures to log for [new] Analex printer
NB38-053: January 11 1963, treating hammers, report on faults
NB38-054: January 11 1963, figures for variation in line spacing, LEO II meeting
NB38-055: January 14 1963, to do list, joints and alternatives to soldering
NB38-056: Diode tester circuit, book reference
NB38-057: Circuit diagrams
NB38-058: Discussion with A K [Forms], continued operation of LEO I for 3 or 4 years
NB38-059: January 22 1963, pinch rollers rubber quality, heat transfer printing process
NB38-060: List of measurements, appointments
NB38-061: January 23 1963, SCR [silicon controlled resistor ?] testing, including diagram and results
NB38-062: SCR testing cont.
NB38-063: JMMP information on printer hammer dwell time
NB38-064: Printer hammers from LEO III/1, wear and dust
NB38-065: Hammers cont. discontinuous movement
NB38-066: January 28 1963, hammers cont., heat transfer addressograph
NB38-067: January 29 1963, references on selection of typeface, font selection
NB38-068: 'Pencilgram' printing on LEO III/1 printer, wobbly lines
NB38-069: Time of print cycle, measurements and costs of library shelving
NB38-070: [circuit] diagram, measurements [for shelves]
NB38-071: Quarterly expenses 1962/1963, type face from Virtue and Co. Ltd
NB38-072: February 4 1963, scope and purpose of tests and diagnosis,
NB38-073: February 5 1963, description of image retaining panel from Thorn Electrical
NB38-074: Testing thyratron, estimate for car damage
NB38-075: Magneitc tape spool gauge clearance
NB38-076: February 7 1963, Premier Coachworks address, :[Chas Ashby], process for return of components from LEO II and III
NB38-077: Contact information for electronic component suppliers
NB38-078: Measurements and diagram for shelving
NB38-079: [kinetic] rollers on Elliot card reader, possible eccentricity
NB38-080: Investigation of pinch roller surfaces
NB38-081: Ampex magentic tape deck, [roller surface compressibility]
NB38-082: February 15 1963, shelving for library ordered, LEO III/1 pinch rollers
NB38-083: Requirements for printer, compressibility and hardness
NB38-084: To do list, records of [performance of] LEO III components
NB38-085: March 4 1963, power supply, paper feed, to do list
NB38-086: Carbonless stationary, library shelving, train times Kidsgrove, Manchester , Wakefield
NB38-087: Hogarth Press, font for high speed printer
NB38-088: March 8 1963, height of character and linearity of printing
NB38-089: Measurements, followed by 6 blank pages
NB38-090: Upside-down section, telephone number
NB38-091: Upside-down section and inside back cover, expenses calibration of microscope
NB38-092: Back cover
Date : 30th October 1962 to 8th March 1963Physical Description : 1 bound volume (92 pages), paper; manuscript Provenance : Archive References : CMLEO/EL/NB/38 , CCH LI 57 This exhibit has a reference ID of CH76461. Please quote this reference ID in any communication with the Centre for Computing History. |
 
This document has been scanned and is available to view online.
Copyright Ernest Lenaerts File Size: 91.64 MB
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